extreme torque steer

[koen]

i see the hull on the 1e picture it looks like a AM sprint cat 42 ,i had the same problem with a single motor MHZ mystic 114 i ran it with 12s with a tp5670 p4 but it was to heavy after a lot of tests now i run a tp5660 1356kv on 8s and 9s the torksteer was still there but a lot less ,freiday i set the strut level to the sponsons and use abc 1814 or 1816-17 now it runs perfect (80 mph )and turns almost flat out, a long story maybe it helps

[Bande1]

i see the hull on the 1e picture it looks like a AM sprint cat 42 ,i had the same problem with a single motor MHZ mystic 114 i ran it with 12s with a tp5670 p4 but it was to heavy after a lot of tests now i run a tp5660 1356kv on 8s and 9s the torksteer was still there but a lot less ,freiday i set the strut level to the sponsons and use abc 1814 or 1816-17 now it runs perfect (80 mph )and turns almost flat out, a long story maybe it helps

Thanks for the input Koen. 80mph is impressive! it is in fact a AM sprintcat 42. Im pulling 165A peak, 145A continuous on 12s just to do 63mph with an ABC 1715. thats a lapping speed though. I never tried a top speed push. I got that torque steer totally flattened out but now Im also having the servo issue with this huge rudder. I shoulda never cut the speedmaster skeg and kept the 4" rudder.

you got a thread on your boat? I'd love to see it!

[Peter A]

Get another skeg strut and go back to the 4"rudder.

[Bande1]

Get another skeg strut and go back to the 4"rudder.

uggg they're a $40 mistake. Im gonna run this 40kg tomorrow. Its got a fancy horn and everything is much tighter and stronger now.

Im building a sport 40 next and will use this smooth strut and get me a SM skeg for the cat.