Author Topic: Conrod life - do they fail eventually?  (Read 777 times)

Offline Rocket Racer

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Re: Conrod life - do they fail eventually?
« Reply #15 on: 07.10. 2019 01:39 »
The very late A65 and the A70 rods that went onto be used on T140's were alloy with steel caps. Apparently one of the issues with the alloy rods was loss of oil pressure with expansion on the caps.
Back in the late eighties I snapped a steel rod in a racing beesa single ... the cause not over revving but the worse sin, engine braking! the beesa's brakes were rubbish and I was ignorantly assisting them with down changes. That made a big mess. Learnt that one fast but late.

If you really want to take the chance, new rod bolts and crack test it...
A good rider periodically checks all nuts and bolts with a spanner to see that they are tight - Instruction Manual for BSA B series, p46, para 2.
New Zealand

Online Triton Thrasher

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Re: Conrod life - do they fail eventually?
« Reply #16 on: 07.10. 2019 06:57 »

Back in the late eighties I snapped a steel rod in a racing beesa single ... the cause not over revving but the worse sin, engine braking! the beesa's brakes were rubbish and I was ignorantly assisting them with down changes. That made a big mess. Learnt that one fast but late.

Don’t worry- we never use engine braking.

Hahaha.