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New petcock pipe length?
Posted: Tue Feb 25, 2025 9:18 pm
by dwerbil
Have received new replacement petcock pipes for my '84 RS. The main pipe is too tall for the tube screen. Is there a recommended length to cut it?
Re: New petcock pipe length?
Posted: Wed Feb 26, 2025 3:19 am
by SteveD
I think I have one in a box to measure...later.
On the twin fuel tap R100 81-84 24 litre tanks, there's a 1.5litre reserve per side. That of course could be customised.
Re: New petcock pipe length?
Posted: Wed Feb 26, 2025 7:30 am
by Kurt in S.A.
According to Bing's site, the type 557 petcock has 77mm and 28mm lengths.
https://bingcarburetor.com/petcocks.html#/
Kurt
Re: New petcock pipe length?
Posted: Wed Feb 26, 2025 11:17 am
by dwerbil
Thanks for the link, Kurt.
Re: New petcock pipe length?
Posted: Thu Feb 27, 2025 5:59 pm
by SteveD
Looks like the spares I have are uniformly modified with new brass pipes.
My short reserve pipe is set to 13mm. Probably doesn't help, except to say the plastic pipes they had were prone to crack...and they're all old these days.
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