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A7 & A10 Engine
A7 1946-1950
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The BSA A7-A10 Forum
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Technical (Descriptive Topic Titles - Stay on Topic)
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A7 & A10 Engine
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Replacing Flywheel Bolts
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Topic: Replacing Flywheel Bolts (Read 623 times)
rowan.bradley
A's Good Friend
Join Date: Aug 2016
Posts: 101
Karma: 0
Replacing Flywheel Bolts
«
on:
25.11. 2017 12:53 »
After cleaning the sludge trap, do I need to fit a new flywheel bolt (the one that retains the trap)? Presumably I don't need to change the other two bolts, which I have not removed? Or do I really need to change all three?
Thanks - Rowan
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Current bike: 1958 A10 Super Rocket (in bits), purchased in 1967.
Previous bikes: M21
JulianS
1962 A10
Wise & Enlightened
Join Date: Mar 2017
Posts: 1455
Karma: 29
Re: Replacing Flywheel Bolts
«
Reply #1 on:
25.11. 2017 13:15 »
My A10 sheared a flywheel bolt which wrecked the crankcase.
Very expensive.
Dont risk it replace the old set with a new high tensile set.
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rowan.bradley
A's Good Friend
Join Date: Aug 2016
Posts: 101
Karma: 0
Re: Replacing Flywheel Bolts
«
Reply #2 on:
25.11. 2017 13:32 »
That sounds a convincing enough argument! I will add the bolts to my SRM order!
Thanks - Rowan
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Current bike: 1958 A10 Super Rocket (in bits), purchased in 1967.
Previous bikes: M21
muskrat
Global Moderator
Wise & Enlightened
Join Date: Jul 2009
Posts: 11046
Karma: 132
Lithgow NSW Oz
Re: Replacing Flywheel Bolts
«
Reply #3 on:
25.11. 2017 23:08 »
I agree with JulianS but in saying that I have never had one let go. Had all 3 out numerous times and torque back down to 30 Lb and red Loctite. It might bite me in the idiot one day.
Cheers
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'51 A7 plunger, '57 A7SS racer now a A10CR, '78 XT500, '83 CB1100F, 88 HD FXST, 2000 CBR929RR ex Honda Australia Superbike .
Australia
Muskys Plunger A7
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The BSA A7-A10 Forum
»
Technical (Descriptive Topic Titles - Stay on Topic)
»
A7 & A10 Engine
»
Replacing Flywheel Bolts