The BSA A7-A10 Forum
Technical (Descriptive Topic Titles - Stay on Topic) => Gearbox, Clutch, Primary => Topic started by: Sunbeam on 02.07. 2019 16:37
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Hi, does anyone know how or why BSA made some gearboxes with a slotted screwed hole on the casting top ear for the clutch cable and some boxes with a plain through hole and cable attachment by a nut either side of the gearbox top ear. I can reason why they did the slot and thread... for easy attachment of the cable and adjustment...can't see why they made gearboxes with both.....thanks.
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the boxes with plain holes were for a ferrule to insert into the plain hole with cable adjustment at the handle bar lever, the threaded gearboxes didn't have a cable adjuster at the handle bar lever when new --- me thinks
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G'day Sunbeam.
As berger said.
Cost cutting! One less process of threading the hole.
Cheers
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The cover with the plain hole was introduced for the 1960 season twins when the cable adjuster was moved to the handlebar end.
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As berger said.
Cost cutting! One less process of threading the hole......
And cost of cutting the slot *work*, otherwise all the above, which been discussed a few times before but I can't see any reason to not have adjusters at each end- apart from counting rivets *conf2*.... I have the early version box and is good for primary adjustment , but the lever end is good for fine tuning on the go- which is not often necessary but handy when needed