FlyingGiants - View Single Post - Planning e-conversion for 33% extra

jbm · 10-08-2009, 06:40 AM

Resurrecting this old thread - I finally kicked my friend's ass to get a motor mount made, so now the 33% extra is alive

Cheap hobbycity components used, but the motor has been stripped and reassembled with a couple of mods.

(Side note: On another motor of the same type it arrived with loose screws holding the can to the shaft, and the circlip holding the shaft in not seated. Neither problem was very noticeable to the naked eye, and would have resulted in failure in no time at all. Combine that with a design that won't let you wrench on the standard prop nut very hard, and I think 90% of the reports of failure can be covered- poor factory assembly and one design flaw. Fix the flaw and check it over with a careful eye and you're home free.)

I'll be re-maidening the old girl at the weekend, and ground running at the club field tonight to check rpm and current draw. Everything runs smooth and clean in the workshop, but full throttle was in danger of rearranging my tools LOL

The spec is:

EMP 80-100 130kv motor (basically a slightly evolved version of the good old turnigy magnet dropper / bearing wrecker)
Custom DA50 style prop hub, doubled up grub screws for shaft to can. Custom mount to match DA-85 pattern for convenience.
120A K force controller
26 x 12 wood prop
12s 6500 or 12s 5000 packs

I'll keep you all posted.

10-08-2009, 06:40 AM	#25
jbm Gettin' Lower! Join Date: May 2009 Location: Woking, Surrey, England Age: 34 Posts: 65	Re: Planning e-conversion for 33% extra Resurrecting this old thread - I finally kicked my friend's ass to get a motor mount made, so now the 33% extra is alive Cheap hobbycity components used, but the motor has been stripped and reassembled with a couple of mods. (Side note: On another motor of the same type it arrived with loose screws holding the can to the shaft, and the circlip holding the shaft in not seated. Neither problem was very noticeable to the naked eye, and would have resulted in failure in no time at all. Combine that with a design that won't let you wrench on the standard prop nut very hard, and I think 90% of the reports of failure can be covered- poor factory assembly and one design flaw. Fix the flaw and check it over with a careful eye and you're home free.) I'll be re-maidening the old girl at the weekend, and ground running at the club field tonight to check rpm and current draw. Everything runs smooth and clean in the workshop, but full throttle was in danger of rearranging my tools LOL The spec is: EMP 80-100 130kv motor (basically a slightly evolved version of the good old turnigy magnet dropper / bearing wrecker) Custom DA50 style prop hub, doubled up grub screws for shaft to can. Custom mount to match DA-85 pattern for convenience. 120A K force controller 26 x 12 wood prop 12s 6500 or 12s 5000 packs I'll keep you all posted. Last edited by jbm; 10-08-2009 at 06:09 PM.