I've gotten the GWS micro gear puller...works great! A bit spendy, but hey what the heck, my 4Site has a new lease on life!

around 100 flights on the SP motor now...sounds even a little more "growly" then when new...and runnin' strong...likes it!


Three more SP motors on the way for me...that should keep both my 4S and mSr running all winter.


Bud, growly Bud

anyone figure out the thrust of this motor vs the UMP51 - suk xp motor?

subscribed... (bought the micro puller, and a few of the SP motors for my UM's)

Great thread!

I also bought a puller and am awaiting the pin vise mini drill to bore out the pinion to get back onto the motor shafts lol

heat doesnt work well

Originally Posted by Razors edge 29

I also bought a puller and am awaiting the pin vise mini drill to bore out the pinion to get back onto the motor shafts lol

heat doesnt work well

a standard manual fingertip type drill works fine...brass is soft.

i dont have any bit that small yet - but can prob borrow one from someone.

also - another issue i am having

some of the SP motor pinions are so close to the motor can that the puller plate wont fit between can and pinion. Even a par if thin needle nose pillers wont either

damn, damn, double damn

I built an UM Sumo and can't fly it - no motor

Originally Posted by maukabud

a standard manual fingertip type drill works fine...brass is soft.

Originally Posted by Razors edge 29

i dont have any bit that small yet - but can prob borrow one from someone.

also - another issue i am having

some of the SP motor pinions are so close to the motor can that the puller plate wont fit between can and pinion. Even a par if thin needle nose pillers wont either

damn, damn, double damn

Huh that's strange...both of mine have plenty of clearance clarence...

ummm..not to insult yer intelligence...not putting them in backward are you?

EDIT: you could always start with the hacksawed penny trick...to get enough clearance (clarence) for the puller.

lol putting what in backwards?

the puller plate only goes on one way?

Originally Posted by maukabud

Huh that's strange...both of mine have plenty of clearance clarence...

ummm..not to insult yer intelligence...not putting them in backward are you?

Yeah...guess it could only fit one way...lol...

see my edit above...if there's enough room between the can and pinion for a slotted penny to fit in you could start it that way...

But maybe you should use an American penny...it's not worth as much as a Canadien penny anymore...lol...and mostly zinc or something to boot.

LOL

I am not sure if even a penny would work - but i could try that trick

thanks for tip!

All i am trying to so is bring the pinion out further to fit a UM PZ gear box as i dont have any pz pinions to spare.

i know the SP pinion isnt 9 tooth, but i figured i'd try it in on the gear box anyways lol

Originally Posted by maukabud

Yeah...guess it could only fit one way...lol...

see my edit above...if there's enough room between the can and pinion for a slotted penny to fit in you could start it that way...

But maybe you should use an American penny...it's not worth as much as a Canadien penny anymore...lol...and mostly zinc or something to boot.

probably been asked, but is there a source for the pinions (that will work with the PZ UM setups)? I'm going to reuse the pinion of my dead UM T-28 motor. Was hoping there was another source.

TIA,
-jav

the pz um motors have a longer shaft than the SP motors do

seeing that this is the case - which motor really has more muscle? lol

The way the pinion is fixed on all these motors, SP or original, can give us a good idea of how cheap they are... With both types of motors, I got pinions all over the place. Sometime the shaft is protruding, sometime it's the pinion that is out a bit (that so great because the puller is much easier to align) and sometime they are flush.

I had one SP motor like Razor Edge where the puller barely fitted under the pinion as well... It's basically a lottery!

fun eh mon amis?

I managed to get this one off, but it no work in pz gear box

I know this has been tried by others before but i thought I might get lucky for once lol.

Not soo much.

Will have to wait I suppose.

Originally Posted by RealGambler

The way the pinion is fixed on all these motors, SP or original, can give us a good idea of how cheap they are... With both types of motors, I got pinions all over the place. Sometime the shaft is protruding, sometime it's the pinion that is out a bit (that so great because the puller is much easier to align) and sometime they are flush.

I had one SP motor like Razor Edge where the puller barely fitted under the pinion as well... It's basically a lottery!

well i managed to get the pinion of the SP motor and found an older 9th PZ pinion, honed it out and stuck on motor shaft of sp motor with some JB.

Now the waiting game.