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Cox Gurney chassis rear axle bearings


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#1 geardriven

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Posted 26 November 2016 - 08:57 PM

I find the a part #3389 listed for the rear axle bearings in the Gurney chassis kit instruction sheet.
A bulk if not all (except the iso-fulcrum) other chassis list a part #3388 as the rear axle bearings.
However, the Cox parts catalog lists only the #3388 as their rear wheel bearing (no reference to a #3389).
Is their a 3389 bearing or maybe a misprint?
I can find the #3388s....
Can anyone clarify...???
Thanks
Chuck Tresp




#2 Pablo

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Posted 27 November 2016 - 10:15 AM

Not me. But if you can show photos of the parts you are looking for some of us may have what you need.


Paul Wolcott

#3 Lone Wolf

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Posted 27 November 2016 - 06:09 PM

I think the regular part number is 3838. Just sold these.

 

http://www.ebay.com/...g4AAOSw4shX7rpX

 

Don't have any Gurneys here at present but I find it highly unlikely that Cox made an error. They did everything in house including printing their own literature.

 

Don't now what it is but there is probably a difference. 


Joe Lupo


#4 geardriven

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Posted 27 November 2016 - 10:50 PM

Hey Lone.....I am familiar with the Iso Torrington (roller) bearing.
The bearing on the Gurney is a typical looking friction-style bearing.
It is colored graphite and is flanged on the outside edge like the other a-typical rear bearings you see on the magnesium-framed car.
Since the ID is the same, I can only suspect that the OD is slightly different or the length of the bearing is different.
My problem is that the Gurney is the only Cox car I have...if I had another Cox, I could remove & compare bearings.
Chuck Tresp

#5 TSR

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Posted 28 November 2016 - 08:22 PM

It is not graphite, but Nylon with 30% fiberglass. That bushing was made for the late-production IFC cars (Super Cuc), the Lola T70 and the Galaxie. But it did not last long and the last cars had bronze bushings.
A regular flanged 1/8" I.D.  bronze bushing from most 1960s period slot cars fit fine in all these chassis.
The early Torrington roller bearings sold separately but NEVER used on a Cox RTR car or kit are not very good and are too sloppy both on the chassis and the axle.
The first La Cucaracha had a more sophisticated, silver plated flanged needle bearings, but even these were a bit sloppy on the axle.







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