Author Topic: C11 front end option..  (Read 158 times)

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Online newc10guy

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C11 front end option..
« on: October 18, 2019, 01:19:54 pm »
I'm still sorting and picking up small bits as they turn up online, but things are progressing.

The frame and forks I started with, had been sitting somewhere damp. The parts that were in contact with the dirt floor, have lost paint, and in the case of the fork sliders, begun to rust heavily around the spindle clamps and fender mounts.
(1946 C11 tele, rigid)

In my parts bins, i have a set of forks and triples from ('53, i was told) BB34. I grabbed them because they were cheap and complete, and have never had a bike to put them on.
is it possible that the lowers, or even the seal holders, will swap between the two?
I would put the whole front end on, damper and all, but i suspect the c11 front wheel/spindle will put up a fight.

keep in mind, that c11 parts are not to be found in Pennsylvania, so i always have to look hard at bodgey solutions...

Offline chaterlea25

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Re: C11 front end option..
« Reply #1 on: October 18, 2019, 07:39:27 pm »
Hi,
The later fork legs will fit the C yokes (trees) as far as I know     But,
You would need a late 54-8 C front wheel
Or modify an early 7in B31 or A7 front wheel hub to C type spindle arrangements and use the stepped spindle
Also the B mudguard centre  mounts are located about 1inch different to the C
Not having a 46 I could be talking sh1t?
though

John

Offline George B Walke

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Re: C11 front end option..
« Reply #2 on: October 18, 2019, 08:57:58 pm »
why are yokes called triple trees over there? .

always puzzled me.
there are only two after all, and not made of wood at all

Online newc10guy

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Re: C11 front end option..
« Reply #3 on: October 19, 2019, 01:08:53 am »
Hi,
The later fork legs will fit the C yokes (trees) as far as I know     But,
You would need a late 54-8 C front wheel
Or modify an early 7in B31 or A7 front wheel hub to C type spindle arrangements and use the stepped spindle
Also the B mudguard centre  mounts are located about 1inch different to the C
Not having a 46 I could be talking sh1t?
though

John
I think you're right about the placement of the m/g mounting point. I'll have to compare them tomorrow am..

Offline timsdad

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Re: C11 front end option..
« Reply #4 on: October 19, 2019, 08:43:25 am »
It always seemed quite clear to me that triple trees are called that because you have to include the steering stem in the equation. You must be very easily puzzled, George!


Ray
Just a motorcyclist.

Online BSAc11g

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Re: C11 front end option..
« Reply #5 on: October 19, 2019, 11:22:28 am »
The entire front end of a unit single BSA (C 15 - C 25 _B 25 _ B 40 _ B44 ) will fit in the frame with no modifications.
I have at times popped the C front end in my B40 and the B40 front end in the C 11 back in the day when the bikes were in fact my daily transport.
Don't know about over there but entire B44 front ends turn up quite regularly down here because the owners replaced them with longer softer ones for scrambles, although new bearings are always needed.
Bike Beesa
Trevor