Brushless motor mount holes

[Peter_B]

I've just come to install a brushless motor, in my RC10 Team Car, only to find that the mounting holes on the motor are slightly too far apart for the holes on the RC10 motor plate.

The motor is a Reedy Sonic 540 M3 #269. I bought it nearly new from eBay.

An old brushed motor fits without issue.

Do I need a different motor plate - from the World's re-re for example?

[NomadRacer]

There's no different motor plate that I know of. I use the Reedy M3 series (17.5T) in a couple of black re-release motor plates and had to work on the top slot with a small file. I don't touch the bottom hole. I'm guessing the gold motor plate will be the same.

[jwscab]

yeah, i think i had to hit the top slot with a file just a little. maybe half a mm at most. probably a standard to metric conversion or something that makes it slightly off.

[Peter_B]

There's no different motor plate that I know of. I use the Reedy M3 series (17.5T) in a couple of black re-release motor plates and had to work on the top slot with a small file. I don't touch the bottom hole. I'm guessing the gold motor plate will be the same.

Any idea what sort of file I need? I don't currently have any at all.

yeah, i think i had to hit the top slot with a file just a little. maybe half a mm at most. probably a standard to metric conversion or something that makes it slightly off.

Yeah it doesn't seem to be far out. But it's enough to stop the screws going in.

[Coelacanth]

There's no different motor plate that I know of. I use the Reedy M3 series (17.5T) in a couple of black re-release motor plates and had to work on the top slot with a small file. I don't touch the bottom hole. I'm guessing the gold motor plate will be the same.

Any idea what sort of file I need? I don't currently have any at all.

You need a round rat tail file. It's basically a thin, round file that you use to either widen or extend a hole. They come in many thicknesses with (usually) a tapered tip. The're pretty cheap and you can buy them in sets with different diameters, or with some flat, round, triangular, etc. shapes.

[jwscab]

https://www.amazon.com/SE-7382NF-Premium-Quality-Needle/dp/B0045L7Z1W/ref=pd_lpo_vtph_469_tr_t_1?_encoding=UTF8&psc=1&refRID=WHXS3PVN71MQ9D1FHP3V

lots of sets of these type around. very handle for many things, not just hobby.

[Peter_B]

Do these look like they'll do the job?

http://www.diy.com/departments/mac-allister-needle-file-l-8-66-set-of-6/701440_BQ.prd

[Timmahhh]

Double check to make sure that the motor doesn't have different spacing for different pairs of holes. Sometimes they vary in spacing around the face plate of the motor.

[Peter_B]

Double check to make sure that the motor doesn't have different spacing for different pairs of holes. Sometimes they vary in spacing around the face plate of the motor.

Checked that. All have the same problem.

[GoMachV]

I had someone with the same issue on a Lethal Weapon motor plate. Apparently some motors are out of spec these days.

[Peter_B]

I picked up a set of needle files and solved the motor fitment issue.

Thanks for the pointers

[Lonestar]

I had someone with the same issue on a Lethal Weapon motor plate. Apparently some motors are out of spec these days.

This is weird

Never encountered the issue so far, but good to know!

[RC10th]

I think the issue is with the old motor plates as brushed motors had a pair of holes side by side which were each slightly off center. The RC10/T motor plate had a fixed lower mounting hole so the motor has to rotate instead of slide to adjust mesh. Modern brushless motors have single holes dead center so the adjusting arc is different.

[Lonestar]

I think the issue is with the old motor plates as brushed motors had a pair of holes side by side which were each slightly off center. The RC10/T motor plate had a fixed lower mounting hole so the motor has to rotate instead of slide to adjust mesh. Modern brushless motors have single holes dead center so the adjusting arc is different.

I believe we were supposed to use opposite holes when running brushed mills back then already