Author Topic: gearbox  (Read 417 times)

Online RDfella

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gearbox
« on: 12.08. 2018 12:15 »
Compared with modern bikes, our gearboxes are a bit slow and notchy. Well, all my BSA and Norton boxes have been. Which is why when I recently rebuild my GF I installed a roller camplate plunger instead of the original cone shaped item. The difference is amazing - positively silky changes. I don't know if they are commercially available, because I made my own after seeing a picture of one online some while ago. Well worth changing, in my view. Photo of device attached.
'49 B31, '49 M21, '53 DOT, '58 Flash, '00 Firestorm, Weslake sprint bike.

Online bsa-bill

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Re: gearbox
« Reply #1 on: 12.08. 2018 14:33 »
yep I have one in my box, can't recall who I got it off
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Online muskrat

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Re: gearbox
« Reply #2 on: 12.08. 2018 20:26 »
G'day RD.
Yes I've seen thosde before and reports are very good. I don't suppose you have the dimensions? I'd like to make a few.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, .
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Muskys Plunger A7

Online chaterlea25

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Re: gearbox
« Reply #3 on: 12.08. 2018 20:34 »
Hi Muskie,
The drawings were on Beeza Bills (RIP) web pages
I had them on my old PC so it would take some searching to find them

John
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Re: gearbox
« Reply #4 on: 12.08. 2018 20:43 »
Thanks John.
Now I remember that's where I saw it. http://bsa-a10.hailwood.com/bsaimprovements.html
Bloody smart bloke Beeza Bill. Taken from us way too early. My timing side roller conversion is his design.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, .
Australia
Muskys Plunger A7

Offline duTch

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Re: gearbox
« Reply #5 on: 14.08. 2018 15:55 »

 Hej RD, maybe you could edit the title to be a bit more specific ?

  My Plungers' shifter is actually quite smooth and precise, but I remember reading about this roller pin a while ago- seemed like a good idea
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
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