Got my rio ep, and want to go faster

[traxxas4fun]

Well i want to go faster.

I have a sidewinder esc and a vxl motor. Also have a xl-5 esc and a 12t titan. I tried the titan but it got hot even with water cooling and stock prop.

Ive noticed with the motor mount, it looks like you have to use a 550 size motor to run water cooling. Also I tried a 540 sized motor, it was to short ( so no water cooling) and the can wasnt big enough so it still spun inside the mount.

My uses for this boat are mostly speed but wake jumping also

So my question(s) are.
1. Id kinda like to stick to brushed what motor do you reccomend?
2. If i were to use my sidewinder esc, how do i add water cooling to it? I use the esc in cars too so dont wanna solder copper tubes to it.
3. Would a crappy integy fan on the esc keep it cooler than watercooling?
4. PROPS. What are benefits of 3 bladed props etc..

[traxxas4fun]

maybe the motor didnt get as hot as i thought it did (12t titan) It was probably 85 degrees or warmer out and i ran it for probably 10 minutes and it was 150? on 7.2v

[hyrulejedi86]

1 & 2) I don't know anything about brushed motors but to cool the ESC you could get a cooling plate from here on OSE under the water cooling section. There are a couple sizes that would probably fit underneith the ESC.

3) Probably not, especially considering that these components are isolated inside the hull, meaning no new cool air to blow with the fan.
4) on the Rio EP my experiance with 3 blade props has been better stability at higher speeds. I got alot less prop walk when I Put one on mine.

[traxxas4fun]

prop walk? what is that. What is a good prop you reccomend to use? For my purposes. Mainly speed and some wake jumping

[hyrulejedi86]

From my understanding prop walk is when the motor torques on the boat and twists it risking flipping the boat or sending it off a straight course.

I actually found that a 38mm or 40mm (stock) is the best for this boat. I have a 3 blade 37 that worked quite well with it. This was the one I tried that gave it alot of stability compared to the bigger two blade.

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXRDF5&P=0

I'm sure if you looked around though you could probably find a different 3 blade around that size that would suit you. The key is to experiment. I bought 3 or 4 different props and tried them all out then when I decided on a 38mm x 55 pitch prop I got a metal one.

[traxxas4fun]

if you dont mind me asking, what set up are you running? motor/esc/prop? any vids

[hyrulejedi86]

Sure, here is my thread and post 16 has the information and a link to the latest video
http://forums.offshoreelectrics.com/...ad.php?t=15477

[Jesse J]

From my understanding prop walk is when the motor torques on the boat and twists it risking flipping the boat or sending it off a straight course.

I think you might be mistaking "torque roll" for "prop walk"

You described torque roll, usually associated with the prop size/pitch. To combat it, reduce.

Prop walk is the tendency of the stern of the boat to scoot laterally due to the nature of a surface penetrating prop; this is a most common problem in hydroplanes, but is the reason monos turn better to the right.

My recommendation would be to either add gear reduction to a brushed motor, or go brushless. Either case would benefit from removing all the abs from the inside and reinforcing with fiberglass, then adding one of these motor mounts.

[traxxas4fun]

ok i slapped my brushless in this. I smashed the throttle and the hull rolled (spun) a full 360 degrees in the water. (it spun right or clockwise)

so your saying i need that mount to fix this? And the boat has more weight on the left side too.

[Jesse J]

well, to fix this you wanna think smaller prop, or adding full left when you gun it. What size motor/prop and voltage are you using when it does the barrel roll?

[traxxas4fun]

running a sidewinder esc a vxl motor on 2s lipo and stock prop

[Jesse J]

I have an 8L (3200KV) on 2S and an m440 prop, here is vid. Your VXL is 3500, right? You might check the timing you have set in the ESC, not too much, go for a mild setting. Mine definitely hops out of the hole, and if I'm not careful will end up on its back as well. Try a 40 mm prop with a little less pitch. Mine was detounged and it seems to help.

post some pics of your interior and the transom when you get a chance.

[Diesel6401]

From my understanding prop walk is when the motor torques on the boat and twists it risking flipping the boat or sending it off a straight course.

I actually found that a 38mm or 40mm (stock) is the best for this boat. I have a 3 blade 37 that worked quite well with it. This was the one I tried that gave it alot of stability compared to the bigger two blade.

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXRDF5&P=0

I'm sure if you looked around though you could probably find a different 3 blade around that size that would suit you. The key is to experiment. I bought 3 or 4 different props and tried them all out then when I decided on a 38mm x 55 pitch prop I got a metal one.

Is this the prop you bought? http://www.offshoreelectrics.com/pro...d=dh-aqub9755? If so it may not work very well. This is a lifting prop designed for hydros/riggers to lift the transom out of the water. Normally doesn't work well on monos.

[hyrulejedi86]

No the metal one I got was from a guy in my local boat club that owns a prop company. He said it wasnt a lifter but ought to work well and it does. I started off with a coue carbon filled and glass filled plastic props from here on OSE.

[Diesel6401]

No the metal one I got was from a guy in my local boat club that owns a prop company. He said it wasnt a lifter but ought to work well and it does. I started off with a coue carbon filled and glass filled plastic props from here on OSE.

O SWEEEEET...