Thread Tools
Jun 18, 2004, 06:17 PM
Registered User
Mr.RC-CAM's Avatar

Upgraded SlowStick motor -- Goes slightly nose up under power.

I needed to increase the payload that I carry on my SlowStick (more gadgets). So I just upgraded it with a BL motor coupled with a EPS400C gear box. I mounted the 400C "inverted" -- that is, the motor is on the lower side rather than the traditional top side.

Now, under power the model goes slightly nose up. Relax the throttle and it flies true. It is irritating.

CG is correct. I have looked at the gearbox mounting and I cannot see a thrustline issue.

The model flew normally with the old power plant. Besides the motor change I now haul a small payload of stuff (about 20 oz AUW). Also, there is a camera mounted on a 6" pylon at the leading edge of the wing.

What might be going on?

Sign up now
to remove ads between posts
Jun 18, 2004, 06:25 PM
Registered User
vintage1's Avatar
you ned more downthrust and/or less decalage with more power.

Question probably belongs in modelling science forum too...
Jun 18, 2004, 06:45 PM
Registered User
Mr.RC-CAM's Avatar
Thanks. I'll toss in some downthrust. I just have to figure out a decent way to do that.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Multiplex Cargo-B17 nosing up under full power redtail Electric Warbirds 7 Sep 24, 2006 08:10 PM
Discussion Lifelike Glider: step up in power from 2x edf-50 motor with 3/2 prop? mike93 Pusher Prop Jet Models 2 Apr 24, 2006 08:48 AM
Downthrust causing "swimming" under power on Rascal Mr Mootsie Electric Plane Talk 9 Jul 05, 2001 08:23 PM
$300 plane, $8 motor, WHat is the next step up? ezekiel Electric Plane Talk 11 Jun 02, 2001 01:37 PM
Will lead nose weight under motor affect the motor? Balin Power Systems 2 May 12, 2001 04:34 AM