The BSA A7-A10 Forum
Technical (Descriptive Topic Titles - Stay on Topic) => Frame => Topic started by: paintingsteve123 on 31.12. 2024 11:43
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Hi guys,
This is my last stupid question for this year.
I've just loosely laced up the rear wheel on my 53 flash.
And I'm not sure if I'm on the right side for the offset or does it need to be reversed.
Or does it look roughly right..
I can't find the pictures I took prior to dismantling it.
I will be taking to someone else for the finishing tweak but he's not old school.
Thanks
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Can't tell from picture but the rim should be offset towards the sprocket side.
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It's is off set but would it be more if I flipped it around.
As I believe the spoke holes are at more sharper angle on the other side, if that makes sense.
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Hi,
A forum search should find a table of correct wheel offsets
John
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Why not just mount the wheel in the frame and see how it looks?
It's a better way of checking for correct off-sets than using arbitrary figures from long ago, as the rim width will almost certainly be slightly different anyway.
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Good call,
Will do that. 👍
Thanks for help.
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The more dished spoke side (more angled spoke holes) is the plain side, flatter is the sprocket side. I believe the frame is symmetrical at the swing arm pivot so you can mark a centre line off that. It should match the off sets in the manual so you get a double check.
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Or mount in the frame and use two straight edges (one each side of the rim but contacting it in two positions) going forward either side of the frame top tube.
It always amazes when out on a run so see just how many classic bikes are crabbing down the road.
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Few things for me to try,
Thanks.
Happy New year to you all.
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I've just done this very job myself on my plunger A10. I set it up with about 16mm blocks supporting the rim as the hub sat on the bench, with driving teeth on the underside. With the lacing done finger tight I supported the frame free of the ground in a plywood jig and fitted the wheel. From there it was easy to see what adjustment were needed get the rim central in the frame and also central to the wheel spindle. Also did the front with a simple plywood jig.
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Looking at your photos we are nearly at the same stage except I've put the lower part of the engine in yesterday.
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You're miles ahead! My motor is still several bags of bits.
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I had the engine cases vapour blasted and that has made a big difference to its look.
I ended up sending the bottom half to SRM because of alignment issues.
That cost loads, didn't tell the misses about that one. 😉
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Sorely tempted to do the same myself. But I still have to get the tank repaired and plated plus loads of other plating which would strain even Elon Musk's wallet.
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That's a very smart workshop you have there Mik!
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Yes, indeed, Ian. I do like my little comforts. Unfortunately it does create some unfortunate confrontations with the Dear Feeder who's constantly 'encouraging' me to get rid of some of the 'junk' (as she puts it) in the workshop and take my grubby toys out there to play with. When (if) the weather perks up I'll clear some space on the bench and at least put the motor together out there.
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*lol*