rc catamaran cheeta prop walk problem

[tjsb]

turns right alot,will shimming the strut bracket fix it?

Thanks Tom

[ray schrauwen]

You can try and then you will find out.

[fweasel]

Single, twin, prop size, is it sharpened and balanced... pictures would help too.

[Peter A]

Yep pics of your setup. Too big a prop, strut too low, small rudder can all be a cause of the problem.

[ray schrauwen]

A skeg strut could help.

[ray schrauwen]

Single, twin, prop size, is it sharpened and balanced... pictures would help too.

Sounds like a single when he mentioned shimming "the" strut bracket. Most twins don't have prop walk issues unless you really went wrong on too big of props.

[fweasel]

Sounds like a single when he mentioned shimming "the" strut bracket. Most twins don't have prop walk issues unless you really went wrong on too big of props.

I missed the "Strut" comment, but driveline friction, motor kv mistmatch, prop damage, plenty of things to make a twin pull to one side. And since we have absolutely nothing to go on, why not think Zebra instead of horse...

[tjsb]

1714 prop,single motor,6s,

Thanks tom

[Speed2]

Does the rudder have any play, is the steering trim set to keep the boat running straight. A low torque servo can contribute to that problem too.
Is the prop properly balanced.
Hopefully reading all the responses will help you solve the problem.

[koen]

If you can hear 2 motors run they are not in sync that can be a problem

[photohoward1]

need pictures. I run on 4s with a 452/2 prop. No prop walk issues. it's a screamer. Run the bottom of the strut up from the sponsons about 1/8 to a 1/4"
Sounds like the struts to deep. BTW it hated the new ABC series props. Old school Octura, balanced, sharpened and de-toungued.

[tjsb]

How fast on 4s,after the strut change I hit 55 and thats with nose in the air.With strut change I dont have turn the rudder so much to go straight.

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[tjsb]

Any other ideas would be great
Thanks guys
Tom

[Peter A]

A skeg strut, as Ray suggested.

[Rlimits]

Cheetha-1.jpgCheetha-2.jpg