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keithbradley
02-18-2011, 09:15 PM
Figured I'd post a little on this mono I am building. It's a 50" gasser hull that I bought new w/o motor. I removed the gas tank, motor mounts, ect. Power plans are for a 5692 Leopard (1090kv), Swordfish 240HV ESC, and (4) NeuEnergy 4s/5000mah-46/92C lipos (8s2p).

I will of course have to come up with a motor mount for the 5692, I plan on just doing a simple billet aluminum plate to bolt between the 5" rails. I have debated on what to do with the flex, it's currently a 5mm, and the only prop I have that will fit it is the HUGE 79mm that came with the boat. I have considered installing a new stuffing tube/flex shaft, but for now the plan is to turn down the end of the shaft to 3/16", install a 3/16" drive dog, and re-thread the end for standard prop nuts. I cant find couplers for 6mm motor shaft to 5mm cable so I will have to make my own.

Other mods will have to include
* Sealing off the "ventholes" in front of the windsheild area and rear of the hatch
* Removal of 2nd water pick up
* Installing trim tabs
* Installing turn fins
* Sealing the exhaust hole in the side of the hull
* Sealing the antenna and Kill switch holes
* Either a sub hatch or another way to keep things dry. The hatch on it now is
not really designed to be taped.
* Possibly carbon fiber inlay...not sure if I want to yet.

This hull has a rather deep v, and is quite Higher than DF type boats, so I have no idea how it will run. Hopefully fast and sure-footed!:thumbup:

http://i624.photobucket.com/albums/tt328/keithbradley/100_2220.jpg http://i624.photobucket.com/albums/tt328/keithbradley/100_2221.jpg http://i624.photobucket.com/albums/tt328/keithbradley/100_2225.jpg http://i624.photobucket.com/albums/tt328/keithbradley/100_2223.jpg http://i624.photobucket.com/albums/tt328/keithbradley/100_2212.jpg

Make-a-Wake
02-18-2011, 09:45 PM
Yee-haa.............lets get another big 50 inch gasser going! I'm pretty good with a belt sander and file.........my 78mm prop is now 63mm, balanced and sharpened. Thats as large as i'm willing to try for my first run. This way i can use the 5mm setup.

I'll be following this one for sure!!

H2OCamel
02-19-2011, 04:35 AM
What is the Quality of the hull and hardware like? I'm intrested in some of their boats and am currious. Can't wait to see it run!

forescott
02-19-2011, 08:49 AM
Wow, that motor actually looks kinda small in that hull! You can order a nice sturdy Peter Z. mount for that motor if you have 100-bucks to part with. I'm really interested to see how this turns out. I have similar plans for a gas cat conversion with one of the new castle 2028's. :popcorn2:

keithbradley
02-19-2011, 11:48 AM
What is the Quality of the hull and hardware like? I'm intrested in some of their boats and am currious. Can't wait to see it run!

The hull is nice. Make a Wake is doing a 50" hydro from the same company and he says his is nice as well. The only complaint I have with the hardware is that the notch in the strut doesnt really allow adjustment. The notch goes straight up and down and it just wont work that way. Thats not a very big deal though, struts are pretty cheap anyway and it should be easy to mod this one.
Its going to take a fair amount of work to get it watertight for FE but that can be expexted of any gasser really.

Rumdog
02-19-2011, 11:54 AM
Keith, is there a teflon liner in the stuffing tube?

keithbradley
02-19-2011, 01:08 PM
Keith, is there a teflon liner in the stuffing tube?

Yeah, its actually a HUGE stuffing tube, with a liner inside another liner.

Rumdog
02-19-2011, 01:11 PM
If you pulled the liner, you may be able to get away with running one of these http://www.offshoreelectrics.com/proddetail.php?prod=hug-b8666sp IF, they were in stock..

keithbradley
02-19-2011, 01:20 PM
If you pulled the liner, you may be able to get away with running one of these http://www.offshoreelectrics.com/proddetail.php?prod=hug-b8666sp IF, they were in stock..

Yeah, that was originally my thought. Southriver has them in stock for like $40, but I think I'll just bring this one into work and turn it down. In the end it will be very similar to that though. I think there will be enough there to cut new threads and just use regular prop nuts.

keithbradley
02-22-2011, 08:11 PM
Going slow, of course. Splitting time between this and another build, work, and family...in order from last priority to first!

Got a little closer today, not much done on teh boat yet, but I got some much needed parts in: 3" Trim tabs, Extra Large turn fins, 5692 jacket, and 3/16" drive dog.
http://i624.photobucket.com/albums/tt328/keithbradley/100_2247.jpg

keithbradley
02-22-2011, 08:15 PM
I also got the work done on the flex shaft. It turned out to be easier than I thought. Starting size was .194", and it needed to be .187" to fit a standard drive dog and prop, so only .0035" had to be taken off. I had intened on rethreading the end but due to taking so little material off, the threads still look great! I will just use teh prop nut that came on it...thats about as easy as it gets. I would reccomend this to anyone who has a boat with this odd size flex.
If you look closely, you can see where its machined from the back of teh drive dog notch up. The rest needed to be left factory size, because it rides on bearings in the strut.

http://i624.photobucket.com/albums/tt328/keithbradley/100_2251.jpg http://i624.photobucket.com/albums/tt328/keithbradley/100_2245.jpg

Make-a-Wake
02-22-2011, 10:05 PM
Nice job on the prop shaft...............i can see where its been turned down a bit in the blown up pic.............The only thing i dont like about that setup is the drivedog looks so small now.........but thats nit-picking i know. Do you have a starting prop picked out.............x455 or so?????

Looking forward to watching this build!

madgadget
02-22-2011, 10:34 PM
I will of course have to come up with a motor mount for the 5692,

Will something like this work

keithbradley
02-22-2011, 10:54 PM
The power...(4) 46/92C 4s/5000mah. I have a pair of matching 5s as well, so I can run 8s2p, 9s2p, and if for some reason I needed to, 10s2p.
Hopefully 460A continuous/960A burst will be enough:biggrin:
http://i624.photobucket.com/albums/tt328/keithbradley/100_2243.jpg

keithbradley
02-22-2011, 10:56 PM
Transom's looking better!:popcorn2:

http://i624.photobucket.com/albums/tt328/keithbradley/100_2254.jpg http://i624.photobucket.com/albums/tt328/keithbradley/100_2256.jpg

Make-a-Wake
02-22-2011, 10:57 PM
Nice!!....................prop???

keithbradley
02-22-2011, 11:00 PM
Nice!!....................prop???

That's a s240 on it. I'm not sure what I am going to start with. I have an x457 here too, one of those should be pretty close. I'll probably do a shakedown run with it on low cell count first (like 5s), that should give me an idea of how its going to act.

keithbradley
02-22-2011, 11:02 PM
Will something like this work

That looks like a nice mount! Is it yours? I would be a little concerned if the mounts on the side have rubber bushings though...

Make-a-Wake
02-22-2011, 11:03 PM
That's a s240 on it. I'm not sure what I am going to start with. I have an x457 here too, one of those should be pretty close. I'll probably do a shakedown run with it on low cell count first (like 5s), that should give me an idea of how its going to act.

A prather never really crossed my mind, but the s240 may be a real good choice for you!:thumbup:

keithbradley
02-22-2011, 11:19 PM
A prather never really crossed my mind, but the s240 may be a real good choice for you!:thumbup:

Thanks. I got 73 out of it in my 40" mono with that s240:w00t: This one wont be quite that fast though:unsure: It may like the x457 or even a x460better...I dont really know how this hull is going to run yet. I haven't had a boat this big and heavy till now.

I just weighed it with (4) 4s lipos, the 5692 w/jacket, and sf240HV esc. Came in between 15-16lbs. Still have to add servo, small rx pack, motor mount, plug some holes, and maybe a sub hatch (havent made my mind up there but if I make a s/h it wont weight much). I'm thinking she's going to be around 18lbs. when its all said and done.

madgadget
02-22-2011, 11:38 PM
That mount came with a large gas conversion bundle I bought this winter, cabin fever, late night made me do it. I've considered putting alum inserts inplace of the rubbers although harder rubbers might work too. I'm actually more concerned about the opposite end not having any support. I may have to contact Peter Z or call in a favor from one of my heli buds with a cnc. This has been a learning experience for me and I just wanted to say thanks for sharing. Mike

keithbradley
02-22-2011, 11:55 PM
That mount came with a large gas conversion bundle I bought this winter, cabin fever, late night made me do it. I've considered putting alum inserts inplace of the rubbers although harder rubbers might work too. I'm actually more concerned about the opposite end not having any support. I may have to contact Peter Z or call in a favor from one of my heli buds with a cnc. This has been a learning experience for me and I just wanted to say thanks for sharing. Mike

Thanks for your input!:thumbup1:

I like the mount. I think it looks nice and the bolt in aspect of it is cool. Even if you put aluminum bushing where the rubbers are its still a pivot point with the single bolts. It seems like you need the same style mount on the back of the motor as well.
Do you weld? You could possibly add on to that bracket so it bolts in the rear too...just a thought:tongue_smilie:

keithbradley
02-27-2011, 11:04 PM
Got a few not-so-fun things done. There were a lot of holes to seal in this boat. In fron tof the windsheild they cut out some triangles as if they were carving eyes on a pumpkin and put screen behind them. There were holes in the hatch with screen as well.
I didnt know how I wanted to seal the front triangle holes, but my first worry was blowing out whatever I put in there if it gets stuffed into a wave at high speed. I ended up taping over the outside and putting a layer of carbon fiber over the holes and a good inch + around the edges. Then I made carbon fiber panels for the outside and epoxied them in. Finally I applied a layer of clear epoxy over the outside to seal them to the hull. I still have some tape lines there to sand, but it doesnt look to bad.
For the holes in the hatch, I left the screen in, taped behind them, and just filled them with thick epoxy. I also filled a kill switch hole, antenna tube, exhaust outlet, and three holes on the transom from the water pickup I removed.

Not much to look at, but here are a couple pics:


http://i624.photobucket.com/albums/tt328/keithbradley/100_2305.jpg http://i624.photobucket.com/albums/tt328/keithbradley/100_2307.jpg

Make-a-Wake
02-27-2011, 11:57 PM
Lookin' good Keith!!

keithbradley
03-12-2011, 07:00 PM
Got the motor mounted, and servo/steering sorted out. I got a billet aluminum cased servo from HK that seems to have lots of torque and should move the big rudder quite well.
I put a small strip of CF at the base of the motor mount to help hold it in place and keep it from wearing the bottom of the hull. Im not going to get too carried away with Carbon in this build, its pretty strong and doing the whole boat would add a lot of weight and cost a lot of $$. The rx battery and rx are just thrown in there for function, they will be mounted later.

After mocking everything up for a COG point of 30%, I now know what I want to do with the esc. It looks like I will be making a simple aluminum piece to bolt to the rails then go over top of the motor and hold the esc in place about where it is in the pictures. This will work well in consideration of motor to esc wiring, battery to esc wiring, and (least importantly) esc to rx wiring.

I am planning on making pads that hold the pairs of batteries for each side.


http://i624.photobucket.com/albums/tt328/keithbradley/100_4599.jpg http://i624.photobucket.com/albums/tt328/keithbradley/100_4597.jpg http://i624.photobucket.com/albums/tt328/keithbradley/100_4601.jpg http://i624.photobucket.com/albums/tt328/keithbradley/100_4603.jpg

madgadget
03-12-2011, 07:12 PM
This is coming along nicely:cool2:

keithbradley
03-12-2011, 07:39 PM
Anyone have any thoughts on this?....
I was considering a subhatch, but now that I have everything sealed up I am thinking about just taping this hatch. Its not super easy to tape down, but I think it will work. I used red tape so you could see it in the pics.

http://i624.photobucket.com/albums/tt328/keithbradley/100_4608.jpg http://i624.photobucket.com/albums/tt328/keithbradley/100_4607.jpg http://i624.photobucket.com/albums/tt328/keithbradley/100_4609.jpg

Make-a-Wake
03-13-2011, 12:01 AM
Lookin' great!! Getting close to a maiden????

keithbradley
03-13-2011, 02:01 PM
Lookin' great!! Getting close to a maiden????

We have a month before we get "marginal" boating days, and 2 months before we start getting nice weather where you have days that you can go run boats and actually enjoy it.
There isnt really a whole lot left to do though. I will be taking the hardware off of the transom today and siliconing the bolt holes...I would bath test it but I dont think my tub is big enough:ohmy:

Otherwise I can make the esc mount in about 5 minutes, and I'll probably just throw some velcro down for batteries until I run it. I dont want to take the time to do battery mounts that may end up being in the wrong place.

I'm getting the itch to run soon. I have this boat to maiden, a 8s powered 32" Fightercat that I just finished, and a 26" 4s powered fighter cat mono waiting to get wet. Maybe out of the three one of them will run well:tongue_smilie:
I have been told in other threads that the 5692 wont have the power to push these larger monos very fast...Well, we will find out soon enough :tape:

*FYI- The setup pictured is actually 9s2p, and it weighed in at 16.6LBS. With everything (esc mount, cooling, ect.) I should be right around 17lbs. Its considerably heavier than my 40" mono, but more notably, there is A LOT more surface area that I am going to be pushing. Im hoping for the best:Praying: but really don't know what to expect out of this hull until I run it.

Brushless55
03-13-2011, 07:27 PM
Oh man!
:popcorn2:

keithbradley
03-19-2011, 06:06 PM
Just got back from her maiden. I started wiht a s240 prop on 8s2p, which gave a fairly decent top speed but there was a lot of cavitation on take offs and turns. It wasnt as noticable when on the throttle hard but at lower speeds and turning it was obvious the prop is too small.
I brought it in and checked temps, turned the trim tab screws in a bit (it was rocking a bit at higher speeds), and switched to the x457 I had with me. Take offs were much better but there was still a bit of cavitation, turns were much better. I think the x4 series is the prop for this boat, but I think it would benifit from a little bit larger one at this RPM (maybe x460).
I brought it in after a few laps and turned the trim tab screws in a bit more, checked temps, and turned the turn fins up a bit. I noticed the turn fins were well into the water with the boat planed out so I angled them up a bit more. After a couple more laps, I hit the LVC..OOPS! :huh:

It turns at speed like its on rails. I think this hull could handle more speed than my DF40 could, and it could DEFINITELY handle some big water. This boat would be fun on 6s2p in a large lake with real boats jumping waves.
As far as speed, without any adjustments I am guessing I was in the 50's... 60's should be no problem at all. The Leopard doesnt seem to be any less powerfull than the Neu 2215 :tape:
Temps were 130's at the esc caps, around 110-115 on the esc boards. Motor was in the 80's and 90's every time I temped it, and the batteries were too.

Here's the bad:
Last night, I ran the 32" cat that I just finished. It was much smaller and lighter, and easy to take to the pond. All I could think today after my (4) 4s lipos were ran down thte the LVC is that if I were running the cat, I would still have 2 fresh batteries left. I would really like to have a couple sets of batteries to run in this but I just dont have the money to spend.

This may be crazy talk, but if anyone is interested in this let me know, I will consider selling it and using the $$ to put into a bit smaller builds. I would have no problem making a video to show how fast it is and how well it handles. Sharp turns at 60mph are not a problem. Its an awesome specticle to run and watch, but after loading it up, Lugging it out to the water, and running down FOUR lipos, I remembered why I sold my last big mono!

I would have to sit down and think about what I have into it, but it would probably be somewhere around $750.

Make-a-Wake
03-19-2011, 09:38 PM
Isnt a maiden with no vid sacreligious? :biggrin:

That Leopard sound like a Beast if it was pushin that big hull that fast! You may consider an x457/3 blade............... vid please for your next run:thumbup1:

keithbradley
03-19-2011, 10:01 PM
Isnt a maiden with no vid sacreligious? :biggrin:

That Leopard sound like a Beast if it was pushin that big hull that fast! You may consider an x457/3 blade............... vid please for your next run:thumbup1:

Yeah I was impressed with the Leopard. I really thought it would be a less powerful motor than the Neu 2215 but Im not sure it is now...

I have been sneaking down to the water whenever I can...weather isnt quite there yet, but I get small windows of opportunity. I went alone so I didnt have my camera man there, otherwise I would have taken a vid.
I put it in the swap shop...not 100% on selling it but I dont know I will really get it out all that much. Its just so big/heavy/inconveinient and burns through batteries so fast...its a lot easier to grab a smaller boat. This one definitely is a different animal, but I have a few new build of smaller boats I plan on running, so this one will do its fair share of sitting. I will make a video though, and probably GPS it if I get time/weather maybe next weekend.

Make-a-Wake
03-19-2011, 11:08 PM
Sorry to hear you may pass it on so soon..................but i know first hand about lugging my 23lb boat 100yds at times to the landing area and feelin' the burn in my arm:unsure:

I am really getting a kick out of my larger builds........but i will admit this, i threw my 30" brushless 6s Villain in the drink the other day and goosed it for a good 5 minutes and it was a blast.........................:Peace_Sign:

keithbradley
03-19-2011, 11:21 PM
Sorry to hear you may pass it on so soon..................but i know first hand about lugging my 23lb boat 100yds at times to the landing area and feelin' the burn in my arm:unsure:

I am really getting a kick out of my larger builds........but i will admit this, i threw my 30" brushless 6s Villain in the drink the other day and goosed it for a good 5 minutes and it was a blast.........................:Peace_Sign:

We will see. This isnt one of those deals where I keep lowering the price on it untill I give it away. If it doesnt sell at $750, Ill keep it. It is a very cool boat, and its ability to motor though the water is quite impressive.

If it sells I have some ideas for some "out of the ordinary" type projects I would like to build next, but if it doesnt sell I still like it. I wouldnt even consider getting rid of it if it werent for the other boats I have that will take most of my time. The way the economy is, and they way valuable items have been selling in the swap shop, it probably isnt going anywhere.

Brushless55
03-20-2011, 01:33 AM
I would love to see a vid of this one going full tilt in the corners
these hulls are pretty cheap and I've thought about getting one

keithbradley
03-20-2011, 12:29 PM
I would love to see a vid of this one going full tilt in the corners
these hulls are pretty cheap and I've thought about getting one

I'll take one when I can:thumbup1:
Its cold here today so I wont be going out.

The hull is about $300 shipped, but they require a fair amount of work/parts. The rudder is about the only part of the hardware that will work in its factory state. If you look at it that way, its really not that cheap, considering a 45" DF is right in that price range.
Besides blocking off all the water entry points of the hull, You need trim tabs, turn fins, strut and flex (or machine the stock flex to work with regular props like I did), motor mount, servo, ect. Mostly all the same stuff you would need if you bought a bare hull other than the rudder (which is quite nice).

It really boils down it whether you like the looks/design of the hull, which is why I chose this one. I like the fact that it looks like a real boat, when the DF....well, not so much.

If youre thinking of getting one, let me know. I could sell this one without motor/esc if you wanted it that way...although I wouldnt reccomend a motor smaller than the 5692.

Brushless55
03-20-2011, 03:29 PM
yeah, that's what I like a bout this hull is the looks
like a Speed Racer theme could look sweet! :banana:

keithbradley
03-21-2011, 09:38 PM
I only had my 5 year old daughter with me today to film, so heres the vid, take it or leave it.:laugh:

I made a few speed runs (best I could in a small area) with fresh lipos when I first stuck it in, then went to check the video and realized my daughter never hit the button on the camera:doh:

So this one is with batteries that are half discharged. There is still some more left in it just getting the setup right, but you can tell in this vid it moves alright.:thumbup: There isnt a whole lot of full throttle in this vid, or high speed turns, but it will turn at any speed. My steering rod started to bend today and it was affecting handling noticably. I'll put a larger diameter steering rod on it and really go after it next time.

GPS was in the boat, it read 57 after the first run (when the camera was off), and 54 after the run you see in the vid. My intent was to show the GPS at the end of the vid, but either my daughter accidentally hit the stop button, or the batteries went dead and the camera shut off. This is with a prop that I just happen to have, and definitely not the best prop on this boat. Even so, Im sure if I could stay in the throttle for 2-3 seconds I would hit 60.

http://www.youtube.com/watch?v=YqPcnv_c__M

Make-a-Wake
03-21-2011, 09:47 PM
My Lord man! Im sittin here laughing my A$$ off.......that thing is so fast and powerful its retarded!!! Wow..............that 5692 is no joke................whew, just caught my breath.......................awesome, but the run with the camera on counts like mine, and yours was 54.........i gave you 4 mph, remember................so i win, 58.9 to 58!:bounce:

Jacked1
03-21-2011, 09:50 PM
Dang! that runs sweet! Wish i had $750!

keithbradley
03-21-2011, 09:59 PM
My Lord man! Im sittin here laughing my A$$ off.......that thing is so fast and powerful its retarded!!! Wow..............that 5692 is no joke................whew, just caught my breath.......................awesome, but the run with the camera on counts like mine, and yours was 54.........i gave you 4 mph, remember................so i win, 58.9 to 58!:bounce:

LOL. I thought of that too when I read the GPS the second time :lol: Really the camera wasnt on that time either so I guess neither one counts...you can tell from the vid it hauls the mail though. 50" boats normally look slow on video. I think with some room 60 is doable.

Brushless55
03-21-2011, 10:00 PM
that is awesome!!
and on 8s power.. looks like you could give the gas racers some issues :rockon2:

Brushless01
06-05-2011, 06:04 AM
Wow thats insane thinking of putting this setup in my Aquacraft Rio 51 what prop did you use to get the 57 mph Keith ? And do you think this setup would take a 65mm prop ?

Thanks

Make-a-Wake
06-05-2011, 09:11 AM
On 8s it should handle an x465 fine imo...................start a bit smaller though at first.

keithbradley
06-05-2011, 01:07 PM
Wow thats insane thinking of putting this setup in my Aquacraft Rio 51 what prop did you use to get the 57 mph Keith ? And do you think this setup would take a 65mm prop ?

Thanks

I'm not sure how the rio 51 hull rides, but with this hull it definitely liked the larger props. The largest I went was an x457 and that still seemed a bit small. If I had kept this boat I probably would have experimented with larger props. I think I would go down in voltage though (or better yet a lower kv motor). 8s with a x457 was a pretty hot setup. Trying to turn a big prop over 30,000RPM takes a lot of power, and pushing a big 51" hull through the water doesnt help.

If I were converting your rio I would buy the 730 kv Leopard or the Castle 2028. That would keep the current draw down and allow you a lot more freedom with your prop choice.

Brushless01
06-05-2011, 02:16 PM
Thanks i looked at the 2028 but honestly 45-50mph is fast enough so how about the 1000kv or the 730kv ? Ideally i would like to stick with 8s lipo so i can use the same lipos in other boats and cars.

keithbradley
06-05-2011, 02:20 PM
You could probably make either one of them work. The 730 kv would end up closer to a gasser setup, with a larger prop and lower RPM. The 1000kv would be close to 30,000 so you would realistically end up with something around the x457/x460 range.

Punisher 67
06-05-2011, 02:43 PM
Very impressive run , For the money the 5692 is a hell of a deal

Brushless01
06-05-2011, 03:42 PM
Thanks got I run the 730 kv on 8s using a 65mm to get speeds in the 50mph plus zone or not ?

Make-a-Wake
06-05-2011, 06:37 PM
Thats a pretty low rpm range to try and hit 50+. You will need to swing a big prop, possibly in the x467 prather 255 range.

keithbradley
06-05-2011, 06:56 PM
Thanks got I run the 730 kv on 8s using a 65mm to get speeds in the 50mph plus zone or not ?

Like I said you would be closer to a gasser's RPM range with the 730kv on 8s. To be completely honest, I have no experience with those type setups, but there are a few guys on the boards who run big gassers and could help with prop selection.

Understand that 50+mph with a 5692 on 8s is an ambitious goal for a boat that size. Im not positive but I think the rio is a bit longer than my boat (my hull only measured ~47") and I had mine trimmed out pretty well. Im not saying it's not possible, but it definitely isn't automatic.

Brushless01
06-06-2011, 11:44 AM
ok thankyou might just go with a 2028

WRXinMALVERN
04-20-2012, 01:51 PM
Hi Keith
A quick question or two can you remember what modification you did to the motor end of the flex shaft to get the motor to fit.
It looks like you cut the flex shaft shorter. Did you change the angle of the flex shaft to meet the motor.
You said you could not find a couplers so you would make your own and if so how did you do it

All help would be very appreciated

Thanks in advance Gareth redfern

Drax21
04-20-2012, 05:19 PM
I have the 5692 coming for my DF40. Hopefully it goes something like this!
How long are your run time Keith?

keithbradley
04-22-2012, 12:52 AM
I have the 5692 coming for my DF40. Hopefully it goes something like this!
How long are your run time Keith?
Run times were terrible in the big mono. 3-4minutes out of 4 4s 5000mah lipos. The DF40 is A LOT smaller hull though. You should get better runtime out of that one and it's relatively easy to get them in the 70s.

Drax21
04-22-2012, 03:57 AM
Run times were terrible in the big mono. 3-4minutes out of 4 4s 5000mah lipos. The DF40 is A LOT smaller hull though. You should get better runtime out of that one and it's relatively easy to get them in the 70s.

5 mins would be nice since my journey to the lake takes me 25 mins:doh:

Espresso
04-23-2012, 12:47 PM
This is an old thread but wow, that boat was fast for its size. It turned really well too. Looked like a mid 30" boat racing around the pond. Hard to believe it's pushing 50" going 50+mph.

Do you recall the weight with and without lipos? I have a Rio 51 that I'm planning to install the same motor/ESC combo in (Leopard 5692 1090KV). I'm planning to use 8S2P. The hull has a rear overhang and funky pointed fountain boat tip otherwise it's a 45-46" hull @ ~8.5lb with just hardware. Just waiting on some upgraded hardware items and finding the time to piece it together. Also need to figure out how to prop it to avoid having a meltdown.

martno1fan
04-24-2012, 04:06 AM
50 mph in a 50" boat is not hard to achieve but in my opinion best bet is twins,for instance a friend over in Finland built one of my 58" Apache (Navaho version) hulls using twin t 600 880 kv motors on 6 s and he was getting 50-52 mph,hes since switched to two himodel outrunners 910 kv motors on 6s and speeds arround the same maybe a tad more,she runs awesome.
Whats more impressive is hes only using cheap hobbyking 200 amp esc,s so this build wasnt expensive and it runs flawlessly.

http://www.youtube.com/watch?v=6g5ZfT-bQ70&context=C49fe413ADvjVQa1PpcFOn2e1CKrecI9W6wVcyT7tu c8J-LkwdYgs=

Drax21
04-24-2012, 04:24 AM
50 mph in a 50" boat is not hard to achieve but in my opinion best bet is twins,for instance a friend over in Finland built one of my 58" Apache (Navaho version) hulls using twin t 600 880 kv motors on 6 s and he was getting 50-52 mph,hes since switched to two himodel outrunners 910 kv motors on 6s and speeds arround the same maybe a tad more,she runs awesome.
Whats more impressive is hes only using cheap hobbyking 200 amp esc,s so this build wasnt expensive and it runs flawlessly.

http://www.youtube.com/watch?v=6g5ZfT-bQ70&context=C49fe413ADvjVQa1PpcFOn2e1CKrecI9W6wVcyT7tu c8J-LkwdYgs=

That is a sweet running boat! Cuts through the chop so easy:thumbup1:

martno1fan
04-24-2012, 07:02 AM
Thanks,yea they run awesome and will take almost anything thrown at them.Most guys run them with gas motors from single zens to inlines and they really do love the chop.Ive been building and selling these hulls for 3-4 years now and theyre rock solid.
Pate was the first to build one for fast electric and im sure he wont be the last,i built his light at just a tad over 8 1/2lb which is light for such a big hull and shes built using glass and carbon.His plan was to build a scale speed running hull but she runs way better than that as you can see.
Mart
heres his build thread.
http://forums.offshoreelectrics.com/showthread.php?21086-Waverider-Navaho-build-(large-Apache-style-build)&highlight=navaho

Drax21
04-26-2012, 11:50 AM
Run times were terrible in the big mono. 3-4minutes out of 4 4s 5000mah lipos. The DF40 is A LOT smaller hull though. You should get better runtime out of that one and it's relatively easy to get them in the 70s.

What batts are you using with your DF? I remember seeing a vid of it running good but don't remember the motor or batteries you were using. Let me know
Thanks