B44 - 2nd Gear Mystery

Here you can talk about all kind of TECH for the B50 B44 B25 And Other BSA unit Singles

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Terryb
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B44 - 2nd Gear Mystery

Post by Terryb » Sun Dec 15, 2019 5:49 pm

Bit of History first, US import 1968 B44SS, purchased from a UK Bike Jumble in 2018. Used as purchased for about a month or 50 miles, no issues. A £2k Nut Bolt resto during 2018/19.

First 5 mile test run, no issues other than chain guard rubbing.
Second 10 mile test run, 2nd gear would only partially engage (grating noise), but engagement not enough to drive the wheel. All other gears no problem including neutral.
Checked bike without engine running and all gears engage.

:werd

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kommando
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Re: B44 - 2nd Gear Mystery

Post by kommando » Mon Dec 16, 2019 9:44 am

Normal issue is 3rd, on this one it's open the box and follow the gearbox blueprint procedure outlined in this site. Pay particular attention to clues like bluing on shift forks shims etc, also check the camplate spring including flat plate.
Last edited by minetymenace on Mon Dec 16, 2019 9:50 am, edited 1 time in total.
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Terryb
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Re: B44 - 2nd Gear Mystery

Post by Terryb » Mon Dec 16, 2019 10:02 am

Yes I think your right. Pity, I have achieved an Oil tight BSA, never managed to do that :ban

Thanks :ok

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SteveS
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Re: B44 - 2nd Gear Mystery

Post by SteveS » Mon Dec 16, 2019 6:26 pm

Hi Terry
Pity, I have achieved an Oil tight BSA, never managed to do that
Last time I had a completely oil tight BSA was when it ran out of oil. :lol:

+1 what Kommando said
Steve Sewell

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Re: B44 - 2nd Gear Mystery

Post by gunnag » Mon Dec 16, 2019 7:52 pm

Could be a number of things affecting the gear change, in addition to Kommando's advice I would have a look at the Post Here which describes and fixes a similar problem to yours.
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Jeff K
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Re: B44 - 2nd Gear Mystery

Post by Jeff K » Mon Dec 16, 2019 11:36 pm

I think that BSA also changed the shifting cam to help out in 1969. I fitted one to a 1961 B40 and it did help.
Jeff

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Re: B44 - 2nd Gear Mystery

Post by hhh » Fri Dec 20, 2019 4:23 pm

Jeff K wrote:
Mon Dec 16, 2019 11:36 pm
I think that BSA also changed the shifting cam to help out in 1969. I fitted one to a 1961 B40 and it did help.
Jeff
This was a huge improvement. I wouldn't consider using the old one as the engagement is less.

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