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Tail Drive gear/pulley - 12/12/2007 6:39 AM   
Bjorn



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From: Grafton, ND, USA
Status: offline 		I stripped the gear/pulley on my 450S. The new one is made of metal. As there is no set screw, how do I fasten it to the shaft? The old one was plastic, with a press fit on to the splined shaft. Thanks in advance!
Bjorn

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RE: Tail Drive gear/pulley - 12/12/2007 7:07 AM   
321


 

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From: Fruitland Park, FL, USA
Status: offline 		Use a drop of Loctite #609 to glue the pulley to the shaft. It also works great for pinions.

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RE: Tail Drive gear/pulley - 12/12/2007 8:48 PM   
techrtr


 

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From: Kelowna, BC, CANADA
Status: offline 		Are you talking about the pulley under the big pulley on the main shaft? I didn't know you could get a separate metal gear. I've had a couple fail and it's a pain to take out the whole assembly. Would be nice to be able to loctite a new gear onto the slined end of the old shaft.

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RE: Tail Drive gear/pulley - 12/12/2007 9:05 PM   
321


 

Posts: 111
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From: Fruitland Park, FL, USA
Status: offline
quote:

Are you talking about the pulley under the big pulley on the main shaft? I didn't know you could get a separate metal gear. I've had a couple fail and it's a pain to take out the whole assembly. Would be nice to be able to loctite a new gear onto the slined end of the old shaft.

No, the upgrade assembly has a plastic gear and a metal pulley. There are no splines for the pulley, so that's where the Loctite comes in.

One note: you have to be careful about where you position the pulley on the shaft so that it lines up with the tailboom.

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RE: Tail Drive gear/pulley - 12/14/2007 6:16 AM   
HeliTB



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Status: offline 		It's the green loctite that comes in the Rex kit. Eventhough the main pinion has a set screw, I always add a little green loctite between the pinion and shaft to be safe.


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RE: Tail Drive gear/pulley - 12/15/2007 8:17 PM   
Bjorn



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From: Grafton, ND, USA
Status: offline 		Thanks guys, all fixed. A real pain to get at!
Bjorn

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RE: Tail Drive gear/pulley - 12/17/2007 6:19 AM   
[]TEX[]



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From: Glenview, IL, USA
Status: offline 		I have done the thread lock trick and it always fails.

This is what I did:

I got an SA belt gear/pulley, the white one. I removed the plastic pulley, then took the aluminum pulley and pressed it onto the splines with a vise. Never had an issue with the belt or pulley again.

Happy flying!

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RE: Tail Drive gear/pulley - 12/17/2007 6:30 PM   
techrtr


 

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From: Kelowna, BC, CANADA
Status: offline 		Good idea. I'm going to try that.

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