Author Topic: EW axles and wheel bearings  (Read 284 times)

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Offline EW-Ron

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EW axles and wheel bearings
« on: 02 May 2020 at 03:57 »
One axle seems to be missing a wheel bearing. (or rather has shed all the rollers and cage). 1926-7 EW350
Can anyone supply them, or is it snookered.
How about axle wheel nuts.
I'm thinking that left hand thread version is not going to be a common find anyplace ?



Are the wheels interchangeable front to rear ? (apart from the sprocket).
Does anyone do a modern/revised axle and bearings ??

Offline eddie

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Re: EW axles and wheel bearings
« Reply #1 on: 02 May 2020 at 06:41 »
The axle nuts should be easy to re-make - 7/16" x 20 UNF LH is a good substitute for the original thread.

   Regards,
                  Eddie.

Offline Daren W Australia

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Re: EW axles and wheel bearings
« Reply #2 on: 02 May 2020 at 07:11 »
Hi Ron I have one full set NOS they are not cheap Regards Daren
too many dougli not enough time!

Offline EW-Ron

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Re: EW axles and wheel bearings
« Reply #3 on: 02 May 2020 at 07:49 »
That looks like 2 sets to me - although one bikes worth.
I really only need one bearing

I see some previous discussion on this subject.
https://www.douglasmotorcycles.net/index.php?topic=3479.0
Mention of 375.00 per bearing  ?!!!!?
The LDMCC didn't stockpile a few thousand sets ??

Wouldn't the original threads be 20 tpi cycle thread.
UNF is sorta close ?

Offline eddie

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Re: EW axles and wheel bearings
« Reply #4 on: 02 May 2020 at 08:51 »
Yes, they were originally 7/16 x 20 cycle thread. 7/16 UNF is almost identical - the main difference being the thread angle - 60 degree against 55 degree - probably about 1 thou over the depth of the thread. The bonus is 7/16 UNF LH taps are reasonably common - whereas, these days, 7/16cycle thread LH taps would have to be made to special order, and as the LDMCC is finding out with the odd Douglas threads - special order means very expensive!!

    Regards,
                  Eddie.

Offline Doug

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Re: EW axles and wheel bearings
« Reply #5 on: 02 May 2020 at 14:43 »
British Standard Cycle (BSC) thread is 60 degrees thread angle. Originally know as Cycle Engineers Institute (CEI) threads, and renamed BSC. Douglas' proprietary threads are also 60 degree thread angle. 

-Doug

Offline EW-Ron

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Re: EW axles and wheel bearings
« Reply #6 on: 02 May 2020 at 22:05 »
Thanks.
Are EW wheels interchangeable front-to-back ?

I could probably cobble up a pair of serviceable rear wheels,
so if one could do duty on the front it could work for me.
I'm just wondering if there is any offset anywhere that would make this unworkable ?

 

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