Rivercat 32

[devo]

I have had quite a few rtr boats but this is my first attempt at a custom build, The specs are tacon 4074 2150kv and seaking 180 and im gonna run it on 4s. As you can see in the pics this boat also has an oiler instead of greasing the shaft constantly.

[carlcisneros]

nice build. :thumbup1:

just remember, even with an oiler, always remove the flex shaft and the end of the days running and
clean it down and dry it.

[LOVE6S]

How does the oiler work, well???

[devo]

How does the oiler work, well???

I have only ran the boat 4 times for 6 laps each and have had no problems or visible wear on the flex shaft, plus I'm getting absolutely no water in the boat from it traveling up the stuffing tube. It's by far the smothest running setup up I have when you compare them by bench testing.

[mtbenjamin77]

This is a boat I built for Devo. I always use oilers on all my builds if I can. The first time I used an oiler was on a pursuit mono and man that thing was smooth and silent until about 75% throttle. Ever since I use oilers on everything.

Devo,

listen to carl he won't steer ya wrong. it is a good idea to remove the shaft after every run and wipe it clean/dry to prevent rusting and eventually breaking. I like to remove it, clean it, wipe some grease on the propshaft only, then reinstall and fill the oil reservoir.

[LOVE6S]

This is a boat I built for Devo. I always use oilers on all my builds if I can. The first time I used an oiler was on a pursuit mono and man that thing was smooth and silent until about 75% throttle. Ever since I use oilers on everything.

Devo,

listen to carl he won't steer ya wrong. it is a good idea to remove the shaft after every run and wipe it clean/dry to prevent rusting and eventually breaking. I like to remove it, clean it, wipe some grease on the propshaft only, then reinstall and fill the oil reservoir. Is it just a gravity feed system, looks like it just kinda lays in the hull, got a build I am getting ready to start, do you think I could get a couple detailed pics and a basic how to, Shawn.

[devo]

Is it just a gravity feed system, looks like it just kinda lays in the hull, got a build I am getting ready to start, do you think I could get a couple detailed pics and a basic how to, Shawn.

You need to solider an additional brass tube onto your stuffing tube and then drill a hole into the stuffing tube attach a feeder hose and mine is capped off with a nitro fuel cap. When you start out for the first run fill the tube with oil and run it on the bench with the cap off for a bit, that will bench bleed it. After this add more oil if needed (I use a clear tube so that it's easy to see the oil level) put the cap on the tube and the your ready to run. At the end of the day I usually flush the whole system out with some wd40.

[mtbenjamin77]

Shawn,

It's just a gravity feed system. what I do Is fill it with oil while I run the motor at idle until oil comes out at the drive dog. that allows the oil to flow down into the entire driveline. Then I just replace the cap and let vibration and gravity do the work. I have considered installing a check valve to allow air in and let the oil run through faster but I've found that too much oil is just a waste and creates a mess inside.

What I do is drill a 1/8" hole about 1 inch from the end of a new stuffing tube. then cut a 5/32" piece of brass tube about 1" long and fish mouth one end with a grinder or round file. Then take the 1/8" drill bit and slide it through the 5/32 tubing and then insert the drill bit with the 5/32 tubing into the 1/8" hole drilled in the stufing tube. Then just solder the 5/32 tube in place. Once it cools take some pliers and pull the drill bit out. Then just install the stuffing tube as usual and run a piece of fuel tubing to a fuel dot mounted on the deck of the boat. here's a pic of one I just did recently and a link to the build thread. there may be more info or pics there

http://forums.offshoreelectrics.com/showthread.php?38158-ProBoat-BlackJack-Twin-Build&highlight=

90586905879058890589

[devo]

Went out today for some saw runs on the boat and I set a Lake record and personal best top speed of 65.2mph. I have no idea why the pic is upside down

[Sheldon03]

That'll be my next build hull. Was it hard drilling the drive-line hole?

[Heaving Earth]

65 on 4s? what is the prop an x450? geez

[mtbenjamin77]

65 on 4s? what is the prop an x450? geez

Tacon 4074 2150 t180 2x 3S 5000's 4416 CNC

[mtbenjamin77]

That'll be my next build hull. Was it hard drilling the drive-line hole?

The most difficult part is getting to the nuts and washers on the inside of the transom. This hull is very tight. We barely had room for the GPS

[Heaving Earth]

Oh 6s I can see. He said 4s I was like "wtf am I doing wrong?" lol

[mtbenjamin77]

I know of 4S setups that'll do 65mph.

[Chilli]

That'll be my next build hull. Was it hard drilling the drive-line hole?

Drilling the stuffing tube hole thru the tunnel bottom isnt that hard on a single set up. First intall the strut and the motor mount. Then install the motor and collet. Insert about a two inch of 3/16 brass tube in the collet and trim/position it so it touches the tunnel floor (you may have to pull the motor or collet off serveral times till you get the right length of tubing). You now have your spot for the stuffing tube hole. Get a Dremel with a carbide cutter (9903) and slowly grind untill you can fit a 1/4 inch suffing tube in the hole and up the 3/16 brass tube. The Dremel makes a much cleaner cut than a drill. Once your stuffing tube is bent and ready to be glued/glassed in, leave the 3/16 tubing in the collet while you install it to ensure good alignment with the motor.

If your motor is more parallel to the tunnel floor like the one pictured below, you will need a S-bend in the stuffing tube. In this case I put the stuffing tube hole on the 32 as far back as possible to keep the S bend in the center of the tube (as much as possible). This leaves me straight runs on both ends for cable alignment and adjustment. I still use the 3/16 tube in the collet for alignment when glassing it in.

[Heaving Earth]

I know of 4S setups that'll do 65mph.
Yeah but on a 2150 kv motor?

[martin]

Chilli what hyperion rx pack do you have in the pic. Thanks.

[mtbenjamin77]

Yeah but on a 2150 kv motor?

not a tacon, but the Aqua 2030 can do it.

[Rumdog]

Lol.. Come on, now. One guy did it. One time. For a saw pass with a big finely tuned prop. With a hydro. Not the same..

[mtbenjamin77]

It's been done in a cat, sport hydro, tunnel and outrigger hydro all P class and that's just the namba records. Top speed for the outrigger hydro was 80+

[mtbenjamin77]

in fact, every record held in the IMPBA P class saw is over 65mph

[Heaving Earth]

Seriously. I would hardly call it a 65mph 4s setup for gereral use

[mtbenjamin77]

Seriously. I would hardly call it a 65mph 4s setup for gereral use

Devo's post stated it was a "saw run" so I am comparing it to a saw record.

[Chilli]

Chilli what hyperion rx pack do you have in the pic. Thanks.

Hyperion 850 mah 2s LiFe

[martin]

What is the run time you can expect before needing to be charged on an 850mah Life.

[Heaving Earth]

You got a point there.

[mtbenjamin77]

Just some more P class record information. All of the info posted above was for P Limited. The record for P Offshore is 93mph and was achieved in the exact same hull Devo runs, the FC 32. So Devo's got a ways to go to set any national records, oh and he's running Q voltage which the record is at 102.041. All this SAW talk makes me want to build a true SAW boat. maybe P Hydro?

[Chilli]

What is the run time you can expect before needing to be charged on an 850mah Life.

I have done a half dozen 5 minute runs without recharging. I havent pushed it any more than that. For my gas boat running two servo's I use a 1700 mah pack.

[devo]

It was a little smoother out today and it went a little faster on 6s, im so impressed with these Tacon 2150kv motors that I think im gonna put a pair in my new fantasm. 67.4 mph on 6s

[mtbenjamin77]

River cat ran good today. I think we can get a little more out of it. Just need to test some air dams so it'll hold the water a little better. Fun little boat!

[martin]

It was a little smoother out today and it went a little faster on 6s, im so impressed with these Tacon 2150kv motors that I think im gonna put a pair in my new fantasm. 67.4 mph on 6s
Did you use the bec on 6s or a separate rx pack. Thanks.

[devo]

Did you use the bec on 6s or a separate rx pack. Thanks.
No external bec I ran everything off the T180