hi guys.. any tips on how to remove the little cog from the motor shaft..? i'm guessing heat but didn't want to pull on the cog in case it pulls the drive shaft from motor..![:@]
also, when its off how is it secured on new motor drive shaft..? red loc-tite..? tried the search feature but couldn't find anything...[>:]
cheers, rgds stuart

Hi Sfstu
never use heat in an electric motor, you'll damage the magnets.
Best tool for pinion removal is ......a pinion puller:

http://www.hobby-lobby.com/tools.htm

Cheers
Jose

thanks jose..! was about to break out the gas torch..!!!![:@]..how about re-fitting..? is it tight enough on its own or would loc tite do the trick to fix it in place..?

rgds stuart

the easy way to refit is put motor in freezer for about ten minutes heat up pinion with heat gun should go on quite esay

GWS makes a cheap pinon puller that sells for ard USD$10 make sure you get the set that is NOT micro sized and that should work.

Some of the replacement gears have a allen bolt and put them in place and tighten. BIGMIG

@ Sfstu
971wright has given a good mounting guide. I lock my e-planes geared motor pinions with Loctite 638, but any retainer compound should work. With the small torques our tank motor develop, if the pinion fits tight then the retainer is not mandatory but it is advisable to put a small drop.
Hope it helps
Jose

many thanks everyone for advice...new graupner speed 400's so didn't wanna knacker em before i got to try em out..!
uhu, will follow yours and 971wrights advice and freeze/heat with a little loctite..prob be a week or so til i get to do it as i need to finish my bike and get it mot'd...[>:][:@]
let you know how it goes..!!!
cheers, stuart

a little warnig super glue does not like heat anything above 150 degrees c and it is useless so if you do put some on do not put it on the gear if you put it on the frozen shaft it may be alright

I use a [link=http://cgi.ebay.com/Miniature-Wheel-Gear-Puller-Tool_W0QQitemZ250206227613QQihZ015QQcategoryZ10029 QQssPageNameZWDVWQQrdZ1QQcmdZViewItem]gear puller[/link] like this. Pretty cheap and easy!