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Old Feb 06, 2012, 05:58 PM
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kushal_22's Avatar
Kamloops
Joined Dec 2001
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HK 2826 3400 KV wanting to replace the shaft so it won`t spin in endbell

This motor shaft is turned down to 2MM and i have bent all three shafts of my motors I see it has a grub screw to hold the shaft. I have taken that out and twisted and pulled but to no Avial. The Next step is to put a punch on the end and tap it out ....But since i have had a hard time getting it out i ask myself are they also Press fitting these in? some sort of special glue maybe?
Can Anyone give me some advice on how to replace it and make sure it dosn`t spin in the endbell?

Thanks
Mal
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Old Feb 06, 2012, 06:49 PM
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Dr Kiwi's Avatar
Chattanooga, Tennessee, United States
Joined May 2003
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Your best bet is to press the shaft out in a vice or an arbor/drill press.... never use a punch and hammer! It is probably a tight press fit, but in case there is some glue in there, you could try heating the bell where the shaft fits to soften such glue.. heating might expand the bell a little.... and loosen it too.

When you press the new shaft in, a very tight set-screw and a bit of Loctite 638 on both screw thread and shaft/bell might hold it.
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Old Feb 07, 2012, 01:32 AM
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kushal_22's Avatar
Kamloops
Joined Dec 2001
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Thanks...Just did that and i don`t think i needed the locktite but used it anyways...I would like to find the right Length 3MM Shaft though...I ended up using the one shaft that was not bent..the motor ended up getting dirt in between the magnets and seizing. If Anyone knows how to find the replacment shafts over at HK...I have loked but am missing them or not looking in the right place..

Thanks
Mal
What I am hoping for is to find a used 16/15/3 and slap that on the back end
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Old Feb 07, 2012, 02:51 PM
Jack
USA, ME, Ellsworth
Joined May 2008
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Is that an inrunner? If so, throw it away and buy a replacement it is best option.

For outrunners, Head's Up RC is a good source for shafts if you can fit them yourself:

http://www.headsuprc.com/servlet/the...FTS/Categories

Strong Motors has some 3mm shafts including some with 2mm ends ground on them:

http://www.strongrcmotors.com/Shafts.htm

Here is a how to on making shafts:

http://www.rcgroups.com/forums/showthread.php?t=1240725

Jack
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Old Feb 08, 2012, 07:39 PM
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Kamloops
Joined Dec 2001
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Quote:
Originally Posted by jackerbes View Post
Is that an inrunner? If so, throw it away and buy a replacement it is best option.

For outrunners, Head's Up RC is a good source for shafts if you can fit them yourself:

http://www.headsuprc.com/servlet/the...FTS/Categories

Strong Motors has some 3mm shafts including some with 2mm ends ground on them:

[url]http://www.strongrcmotors.com/Shafts.htm[/url

http://www.rcgroups.com/forums/showthread.php?t=1240725

Jack
I think you have INrunners and Outrunners swapped. As inrunners you have no end that needs to be secured as both ends spiin and all you need is a C clip at the rear end. OUTRUNNERS on the other hand need one end to be Secured and is a pain in the ass. i think your right on the trow away part though....just a outrunner
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Old Feb 08, 2012, 09:02 PM
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Canada
Joined Nov 2000
6,953 Posts
One can use the 3mm shafts that are universally fitted to cdrom drives/ cdplayers Or failing that use a piece of 3mm drill Or even 3mm piano wire.
The circlip groove is fairly easily cut in using a dremel cutoff wheel.
Search .. it's an Old technique.. well documented.
Yes a bit of work but still a heckuvalot easier than awaiting delivery of some overpriced (with shipping) bit of rod 'replacement'.
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Old Feb 08, 2012, 10:16 PM
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kushal_22's Avatar
Kamloops
Joined Dec 2001
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MMMM Cut off wheel yeahhhhh (Homer simpson kind thing)

Thanks for the "Class" i have a 3MM shaft just didn`t have the "Clip ring" which i now know how to make
Thanks
Mal
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Old Feb 09, 2012, 07:25 AM
Jack
USA, ME, Ellsworth
Joined May 2008
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Quote:
Originally Posted by kushal_22 View Post
MMMM Cut off wheel yeahhhhh (Homer simpson kind thing)

Thanks for the "Class" i have a 3MM shaft just didn`t have the "Clip ring" which i now know how to make
Thanks
Mal
If you need to make a "clip ring" for a 3mm shaft you can take a 2mm or 2.5mm flat washer and cut a narrow slit on one side. That can be forced down over the shaft until it drops into the groove. And it can be tightened with pliers if it is too loose.

Drilling out a wheel collar and backing up the clip with it will add some insurance against the clip coming out.

Jack
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