Help I Need More Cheap Speed

[AMG4ME]

Hey All,

First I would like to say that this site has been absolutly awsome for information. Members are great and everyone seems to love to share good info. I try to buy anything I can off OSE because of it.

Now comes the question: I need more cheap speed (More Speed without Replacing ESC/Motor)

What I have: Revolt 30
Grimm 4s 5000Mah Batteries All the way to the back
OSE Sharpened and Balanced/Thinned Octura x642
I have not put in but have the OSE bearing and shaft but I have it here.
Turn Fins up and angled forward
I have not touched anything else... ie trim tabs, strut
Ran 37.40 with Iphone GPS in the boat... lol (Compared to numbers I see around the site this seems really slow)

This is my first boat and I am a newbie for boats... I have a few Helicopters (Genius CP, MSR, Nine Eagles) but not a lot of that stuff transfers well.

Any recomendations? Pictures are help if they are handy to post.

[Fluid]

Two things will get you more "cheap" speed. Set the hull up to run loose, on the back part of the hull. This reduces drag and gives free speed - but will make the boat more liable to blow over. Second is another prop. While yours may work okay, club members have gotten into the mid 40s with an m445.

All the power in an FE boat is in the packs, and better packs mean more speed. Yours may be fine, or not. You can scuff the hull bottom in contact with the water to reduce drag a big more. Next it's $$$.


.

[Mike Caruso]

Hey All,

First I would like to say that this site has been absolutly awsome for information. Members are great and everyone seems to love to share good info. I try to buy anything I can off OSE because of it.

Now comes the question: I need more cheap speed (More Speed without Replacing ESC/Motor)

What I have: Revolt 30
Grimm 4s 5000Mah Batteries All the way to the back
OSE Sharpened and Balanced/Thinned Octura x642
I have not put in but have the OSE bearing and shaft but I have it here.
Turn Fins up and angled forward
I have not touched anything else... ie trim tabs, strut
Ran 37.40 with Iphone GPS in the boat... lol (Compared to numbers I see around the site this seems really slow)

This is my first boat and I am a newbie for boats... I have a few Helicopters (Genius CP, MSR, Nine Eagles) but not a lot of that stuff transfers well.

Any recomendations? Pictures are help if they are handy to post.

More Cheap Speed could it be as easy as an adjustment?

If using Tactic Radio you have to set it up like the instructions say or all you will see is 37.5 to 38.5 mph. Happened to me I had just run 48.7 mph the day before and the fastest it would go the next day was 38.5 mph same water, wind everything. I was going nuts.....went home read instructions again. The next day tossed it in the water 45 mph right away.
I just got back from running my Revolt today and tried a M-645 prop. Runs the fastest yet but everything was real-hot BUT!!!! I figured it out WHY .........I was adding LEFT rudder trim and it limits the water to the rudder pickup hole. I'll fix that. One other thing I tried was a 120 ESC with 11.5 timing close to the stock AQ 60 ESC for mph might have been the extra heat in the motor and esc.
Good luck.
Mike

[AMG4ME]

Hey Fluid thanks... can you recomend a good pack and I am not sure about how to set up the boat to run loose but maybe I will take another good look at the rest of the topics to get some hints.

Mike.... I have read a couple of your other posts that mentioned that and I am wondering if that is my biggest culprit right now. I am going to go through the manual again and try to see if that helps. Its funny too cause when I read that post a couple of weeks ago it really set something off in my mind but I went ahead and ignored it and now that you re emphasized it I think I am going to try that first.

I might get it out in the harbour tomorrow night and see if I can rebind and set up my txt again and try to play with the trim tabs to maybe get the bow up a bit more to have less boat in the water. I hope this is the correct idea. Again thanks for all the help I really want to beat my friends Impulse 31 but right now he has me good.

[Mike Caruso]

If its a Tactic Radio you buddy's 31 is in trouble tomorrow. It made me really nuts after boating for many years to just loose 10 mph??????? Only prop my boat does not like is M-545 I thinned the blades sharp as can be. Ran its bigger brother M-645 and its a the fastest on my boat yet. I have install my Eagle Tree again and get the numbers. (wants to swap ends) The transom moves left to right bad at top speed I am sure a different prop depth would help. Running for fun and speed but I am finding out which props work good at the same depth setting. Next I have to shim the strut mount (change thrust angle) so the boat runs true and the rudder will be centered. Sick of right hand turns when it should be running straight. Good luck tomorrow.
Mike

[AMG4ME]

Ok it seems like i am binding my txt correctly but I may have the settings wrong... I have two questions:

1. Once you have binded the txt to the reciver do you turn the throttle trim up after or leave it at the same point?

2. Can anyone take a picture of thier txt of the trim and throttle and (N-R) settings as they are when they bind it so that I can set it up the same way. I know this is a pain but after your post Mike I really believe that my lack of speed is comming from the way I am setting up the txt. Although if I am wrong I am going to be frustrated ... lol.

[Cinnabun]

Whats this TX/RX setup stuff I'm reading about?

I'm not running the tactic, I'm running a Spektrum setup. Is this something I need to worry about? My revolt did 38mph with a single 4s pack and a 440/3, fins all the way up and haven't touched the trim tabs or strut. I saw 37.5-38.5 comment and was wondering if I may be falling into this issue because no matter what prop I use it does 38ish mph.

[Mike Caruso]

Ok it seems like i am binding my txt correctly but I may have the settings wrong... I have two questions:

1. Once you have binded the txt to the reciver do you turn the throttle trim up after or leave it at the same point?

2. Can anyone take a picture of thier txt of the trim and throttle and (N-R) settings as they are when they bind it so that I can set it up the same way. I know this is a pain but after your post Mike I really believe that my lack of speed is comming from the way I am setting up the txt. Although if I am wrong I am going to be frustrated ... lol.

Its easy Just as the directions say point the (throttle) trim at 2 o'clock and leave it alone....... I made that goof too.

[Mike Caruso]

Whats this TX/RX setup stuff I'm reading about?

I'm not running the tactic, I'm running a Spektrum setup. Is this something I need to worry about? My revolt did 38mph with a single 4s pack and a 440/3, fins all the way up and haven't touched the trim tabs or strut. I saw 37.5-38.5 comment and was wondering if I may be falling into this issue because no matter what prop I use it does 38ish mph.

No Tatic Radio's only. Just make sure you are at 100% throttle.

[AMG4ME]

Its easy Just as the directions say point the (throttle) trim at 2 o'clock and leave it alone....... I made that goof too.

My radio won't bind until its down to about 4-5 o'clock... I think that is why I am so confused. It won't beep at 2 o'clock then I turn it down to about 4-5 and it will beep. What does the (N-R) switch... does that effect anything? Does it need to be in one or the other? Doesn't say much about that in boat manual and it doesn't really go to much detail in the radio manual.

I feel like i must be doing something wrong because if you can hit 52 MPH with a similar set up and I can't seem to hit 40MPH that seems like a big difference. Thats close to a 38% difference in speed.

[fox88gt]

You will see nice gains in speed by adjusting the strut upwards. The Revolt is a V hull so its hard to go "too far" trimming up unless you are running into a strong headwind (yep, i blew mine over running too much trim into the wind). Just like a real boat, the drive needs to be trimmed up to carry the bow up and out of the water, reducing the wetted surface on the hull. Air offers much less resistance than water, so the less area of the hull dragging through the water, the faster the boat will go. Have fun! You're in the right place!

Jeff

[AMG4ME]

Thanks Fox I might try putting up the strut a hair and maybe adjusting the trim tabs up some more.

Mike I just did the speed calculator and apparently I am not that far off at 38... it calculated me at 40 mph with my prop. I am not sure what you did to achieve your speeds but I sure would like a small chunck more so I can run with my buddy's impulse 31. Stock he GPS's his at 47MPH.

[Phoebe]

Suggest you guys give the stock Impulse Prop on your Revolts. I get 7 or 8 minutes run time, flat out, at 46 mph.

[Mike Caruso]

TURN ON YOUR TRANSMITTER.
Set the Throttle Trim to negative (clockwise if you have a dial)
25%.
If your radio has end point adjustments, check to see that your
(EPA) is set to 100% both forward and reverse throttle trigger.
Then plug the batteries into the motor controller. At this time you
will hear one beep letting you know battery power is working to
the controller. To arm the system, squeeze the throttle trigger
fully and hold until you hear one more beep. Release the throttle
trigger and you will hear three more beeps. Your boat is now
ready to operate.
Note: You will have to go through this simple arming procedure
each time to run your boat.
If your boat does not beep after plugging in the batteries, adjust
your throttle trim lower “a lesser percentage” until you hear the
boat beep. Then continue the arming process.
������������
Plug in the packs
Squeeze the throttle trigger and hold
Release the trigger
«Beep»
«Beep»
«Beep-Beep-Beep»
Your boat is now ready to operate!
NOTE: Before or after the above, IF your boat’s power system emits
consecutive beeps, your throttle trim will likely need to be reversed.

Right off AQ web page.
Mike

[AMG4ME]

Tryed the boat in the harbour last night... its not the txt... the boat is slow.... bummer. Could have sworn I would have been able to get a bit more than what I did. Gonna try raising the strut a hair and the tabs and see what happens.

[Mike Caruso]

Sorry to hear that.

[chrispycontrol]

I raised my strut maybe 1-2mm and I noticed a nice jump in speed.
And I have everything sharpened to kitchen knife status
gps last night 43.6 with stock prop.
gens ace 2s 5000mah 40c x2

[Mike Caruso]

I raised my strut maybe 1-2mm and I noticed a nice jump in speed.
And I have everything sharpened to kitchen knife status
gps last night 43.6 with stock prop.
gens ace 2s 5000mah 40c x2

Good for you!

[AMG4ME]

Wow really... i am getting really frustrated now... I think I must have the slowest boat out there...

[Bduncan]

Try ose 47 mm carbon prop trimmed all the way up. Run dual watercooling and try ahort runs

[skeeler]

Stupid newbie question: When adjusting the strut, it seems like you have to bend the stuffing tube. Is that correct? Is there a risk of fatiguing the tube and having it fail on you?

Thanks.

[skeeler]

Stupid newbie question: When adjusting the strut, it seems like you have to bend the stuffing tube. Is that correct? Is there a risk of fatiguing the tube and having it fail on you?

Thanks.

[Bduncan]

I have never had a problem with stuffing tube when adjusting
The strut. Water test in bath tub. Use loctite on coupler on this boat. Famous
For coming loose shaft falling out and ruining your day

[Bduncan]

For speed run adjust turn fins up alot ( away from the water ). Boat still turns well

[Mike Caruso]

Stupid newbie question: When adjusting the strut, it seems like you have to bend the stuffing tube. Is that correct? Is there a risk of fatiguing the tube and having it fail on you?

Thanks.

Just make it parallel with the hull bottom and run it there. I will measure mine tonight. (8.21.2013 hull on flat surface measured up to the center of strut hole .400") Look at Revolt Redone it has a great shot of strut height.

[Mike Caruso]

(8.21.2013 Place hull on flat surface remove prop and shaft. Now measured from the flat surface up to the center of strut hole mine is @ .400")

[AustinWolv]

No Tatic Radio's only. Just make sure you are at 100% throttle.

Can you please elaborate here?

I'm running the same starting setup as many in this thread it appears.

Stock Revolt motor, ESC
(2) 2S 5000mAh Turnigy NanoTechs - set for 30% COG
X642 S&B
Turn fins all the way up and angled forward (still turns on a dime, doesn't slip)
Left outboard trim tab angled down just a touch in attempt to offset the right pull the boat has (had to still trim rudder quite a bit left to keep it straight)
No adjustment to strut.
Rudder sharpened.
Using Spektrum MR200 and DX3C.
Garmin Forerunner 101

My GPS said 45mph one day using the stock prop. Never seen that again.
Another day it said 30mph.
Today it read 35mph on one run, a little less than that on another run.
On yet another day, it was low 30s on one run and then re-armed the ESC on the next pack as expected and it hit 40mph.

No major differences in water surface/chop. Pretty darn smooth to very light wind ripple.

When I plug in my packs with radio throttle trim set middle, it beeps about every 1 second. I unplug, adjust throttle trim down one click at a time, then plug back in. Keep doing that until the stock ESC does the single beep thing, then I pull full throttle until it beeps again, then let it out to neutral, where the ESC completes the arming sequence beeping.

To me, either those Turnigy batteries kind of suck (individual cell voltages don't support this, but I'm no expert) or the ESC isn't setting up right. I have 4 packs of the 2S Turnigy Nanos and 1 pair of Hyperion 2S 5000mAh. I have yet to try the Hyperion due to time but will be hopefully later this week.

(8.21.2013 Place hull on flat surface remove prop and shaft. Now measured from the flat surface up to the center of strut hole mine is @ .400")

Checked this a week ago or so and pretty sure mine is the same. I'll double-check again.

What am I missing?

[rickwess]

The variations in top speed are most likely due to the throttle calibration you need to do every time you power on.

I'm using the DX3S with an MR200 in my Revolt (it's for sale in the swap shop!!) and never had to mess with the throttle trim to get the stock ESC to calibrate. I changed out to a SK 120A early on, for a few reasons, so I don't have a whole lot of experience with the stock ESC though.

[AustinWolv]

Hi Rick, saw your Revolt on the swap, nice-looking package!

Just don't trust the stock ESC with that re-arm thing.

So you had your throttle trim set to middle and it would arm?
If so, I'm going to start over and rebind the MR200 to the radio and try setting it all up again.
As it stands now, the throttle trim has to be set about -5 to get it to arm.

I have a Seaking 180A that I got randomly for a good price that I'm thinking about swapping into the boat just for the hell of it, as the re-arming thing on every pack change for the stock ESC kind of sucks, not to mention that I can set the LVC on the Seaking to what I want. I time my runs anyway to drop to about 3.6-3.7v on each cell, but having the backup feel-good LVC on the Seaking doesn't hurt.

I'll mess with it tonight and see.

[Bduncan]

Try callibtating throttle. hook up the motor, receiver and esc.
turn on the radio and the receiver (if you are using a seperate receiver battery. (you should be)) (if not, just continue to the next line with the transmitter turned on.)
pull the trigger to full throttle and while holding it there connect your lipo battery up to the ESC.
you should hear APROX. 3 beeps, then IMEDIATELY release the trigger and you should hear a confirmation beep.
unplug the lipos from your ESC and you are done calibrating the throttle.