Author Topic: 1946 B31 - Steering head bearing (and some other parts)  (Read 495 times)

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Gadorey

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1946 B31 - Steering head bearing (and some other parts)
« on: 18 January, 2022, 13:23:14 »
Hi everyone,

I am looking for a steering head bearing top cone part No. 65-5319.  The bearings on the 1946 B31 are different than the later ones (1" inner diameter), and were also used on Bantams.  Unfortunatetly I haven't been able to find one anywhere, and am hopping someone might have one lying around.  At the moment this small part is keeping me from coming further with the restoration. Alternatively, does anyone know of a suitable taper bearing that would fit? 

I am also looking for some further parts which are missing:
Front brake plate part No. 65-5895
Rear brake anchor strap part No. 65-6275
Front Engine Plate cover part No. 65-4431

...and a complete gearbox....  Mine is too far gone to try saving it (bike was found in very poor condition with water and mud inside...).  I would actually rather use the later gearbox introduced in 1948 as the parts for the early one are impossible to find.  I know the differences and would mmodify the later box to fit my 1946 bike.

So if anyone can help, I would be very grateful.  I am located in Germany.

Cheers,
Gui

idie

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Re: 1946 B31 - Steering head bearing (and some other parts)
« Reply #1 on: 18 January, 2022, 14:39:31 »
Isn't there a problem with using a later gearbox on the early B31s. I think the later ones have a wider mounting lug which needs to be cut down.

Gadorey

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Re: 1946 B31 - Steering head bearing (and some other parts)
« Reply #2 on: 18 January, 2022, 15:28:40 »
Yes, you are right, but it can be done.  There’s a threat here in the forum about it.
I believe it’s my better option considering the state of my original gearbox and the difficulty in getting parts for it.

idie

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Re: 1946 B31 - Steering head bearing (and some other parts)
« Reply #3 on: 18 January, 2022, 17:16:11 »
That's the option I would go for.

Pete C

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Re: 1946 B31 - Steering head bearing (and some other parts)
« Reply #4 on: 18 January, 2022, 20:12:25 »
Sorry, I can't help with parts but I have fitted a later box to my 1946 B33.
I'm also in Germany (Würzburg) and if I can help let me know.
Cheers
Pete

Gadorey

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Re: 1946 B31 - Steering head bearing (and some other parts)
« Reply #5 on: 18 January, 2022, 21:01:29 »
Thanks Pete, I’m in Helmstedt. What I need I’ve listed above, so if you hear anything let me know. I will come back to you for details on the mod, once I find a gearbox 😀

lcarter69

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Re: 1946 B31 - Steering head bearing (and some other parts)
« Reply #6 on: 15 April, 2022, 18:28:11 »
hi
i just bought 65-5320 and 65-5319 top and bottom ballrace cones from Mikes BSA in australia , shipping is terrible but he has lots of bits including gearbox bits ,i am going to try and make shims and thrust washers for the box on a friends laser cutter
good luck!
lee

lcarter69

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Re: 1946 B31 - Steering head bearing (and some other parts)
« Reply #7 on: 15 April, 2022, 18:30:26 »
Sorry, I can't help with parts but I have fitted a later box to my 1946 B33.
I'm also in Germany (Würzburg) and if I can help let me know.
Cheers
Pete
[/
 Pete do you perhaps have drawings or measurements of what you did ? did you use the later plunger gearbox ?
thanks
lee

Pete C

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Re: 1946 B31 - Steering head bearing (and some other parts)
« Reply #8 on: 17 April, 2022, 21:15:12 »
Sorry, I can't help with parts but I have fitted a later box to my 1946 B33.
I'm also in Germany (Würzburg) and if I can help let me know.
Cheers
Pete
[/
 Pete do you perhaps have drawings or measurements of what you did ? did you use the later plunger gearbox ?
thanks
lee

just seen this, I'll look up the info and get back to you.

Pete C

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Re: 1946 B31 - Steering head bearing (and some other parts)
« Reply #9 on: 19 April, 2022, 08:19:37 »
Hi Lee

I have sent you a PM

cheers
Pete

Pete C

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Re: 1946 B31 - Steering head bearing (and some other parts)
« Reply #10 on: 19 April, 2022, 14:04:25 »
Hi Lee
I don't think my attempt to send a PM worked  ???
if you send me your email 'll send you a pdf with the gearbox info           petercomley@web.de

cheers
Pete

Bess

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Re: 1946 B31 - Steering head bearing (and some other parts)
« Reply #11 on: 21 April, 2022, 09:51:14 »
Hi,

Quote
I am also looking for some further parts which are missing:
Front brake plate part No. 65-5895
Rear brake anchor strap part No. 65-6275
Front Engine Plate cover part No. 65-4431

I have a front brake plate (images below) and an anchor strap.

Best wishes...

Gadorey

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Re: 1946 B31 - Steering head bearing (and some other parts)
« Reply #12 on: 21 April, 2022, 12:44:35 »
Hi,

Quote
I am also looking for some further parts which are missing:
Front brake plate part No. 65-5895
Rear brake anchor strap part No. 65-6275
Front Engine Plate cover part No. 65-4431

I have a front brake plate (images below) and an anchor strap.

Best wishes...

Thanks Bess,
I already found a brake plate and the strap I fabricated one myself. The next big work will be the gearbox and clutch (I’m fitting a later one). I’m sure I will need some parts but I shall see when I open the box up.
Cheers
Gui

Bess

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Re: 1946 B31 - Steering head bearing (and some other parts)
« Reply #13 on: 21 April, 2022, 15:20:49 »
Hi Gui....