Lumenier RB2205C-12 2400KV SKITZO Ceramic Bearing Motor
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Old Jun 18, 2004, 07:17 PM
Mr.RC-CAM is offline
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Question

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?

RC-CAM
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Old Jun 18, 2004, 07:25 PM
vintage1 is offline
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you ned more downthrust and/or less decalage with more power.

Question probably belongs in modelling science forum too...
Old Jun 18, 2004, 07:45 PM
Mr.RC-CAM is offline
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Thanks. I'll toss in some downthrust. I just have to figure out a decent way to do that.

RC-CAM


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