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12-04-2005 06:55 AM  12 years agoPost 1
DeanH

rrNovice

Magnolia, Texas

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I have two Quick 60s and both of them have worn out the pinion gear where the bearing fits into the bearing block. Both of them identical in less than one gallon of fuel. Other than that, they are a pleasure to fly.

Does anyone else have that problem?

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12-04-2005 11:02 AM  12 years agoPost 2
Quick Worldwide

rrKey Veteran

Coopersburg, PA

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replacement pinions

Hi,

I am in China now & have read your post....

Our pinions are hardened to very high standard (45 HRC)...

The problem could be a few things.

1- the bearing could be bad
2-unless the hardening factory did not heat the material to our standard) In China very possible...
3- simple solution is to locktite the pinion into the bearing...please check bearing & let me know

We will replace both pinion for you free of charge....Please call Jon or Chuck as i will email him right away....

Thanks..Irwin

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12-04-2005 01:43 PM  12 years agoPost 3
Dr.J

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Ontario, Canada

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That is a common problem with these machines. To solve it, I made a couple of changes. First, I bought an SKF bearing (with rubber seal) for the pinion and then, when assembling, locktited the pinion into the inner race of the bearing. Second, I eliminated the torrington bearing by having a start shaft machined and pressed into the clutch. By this method, you need a KSJ type start wand, that includes the torrington bearing.

The other thing is that when you're assembling, you need to dial indicate the main gear to find the high spot and then make sure there's enough clearance between the pinion and main gears. If the clearance is too small and the main gear out of round (another common problem), each time the high spot, on the main, comes around, it will beat the heck out of the pinion bearing. If you haven't a dial indicator, either, get one or make sure you have plenty of clearance between the main and pinion (better too much than too little).

Follow these steps and you should have no more problems.

John

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12-07-2005 12:05 AM  12 years agoPost 4
DeanH

rrNovice

Magnolia, Texas

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I just wanted to say thanks to the guys at Hobbies and Helis.

They read this thread and took it upon themselves to contact me to replace the worn pinions and bearings.

I can't wait to fly my Quick 60 pros again.

Thanks Again Guys,

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