Re notching wire rings

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davidblythe
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Sun Mar 22, 2009 9:05 pm

as it seems very difficult to find someone to repeg a piston, want to re notch the rings instead

what is the best way to do this as dont want to overdo the notch, file, air grinder ?

jimmers
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Sun Mar 22, 2009 9:09 pm

needle file would have thought as first go

how come you cant repeg yourself?

davidblythe
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Sun Mar 22, 2009 9:13 pm

give me another 2 years and i may attempt it

seems one of those jobs people dont like to do

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Knowledge
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Mon Mar 23, 2009 5:58 pm

Don't leave any sharp edges in your cut-out, otherwise you may have stress fractures. Otherwise, I think it is a sound alternative to re-pegging. Opinions differ.
Martin

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tony
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Mon Mar 23, 2009 9:01 pm

Imo i'd find another piston. What port is the peg running through btw?
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davidblythe
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Mon Mar 23, 2009 9:06 pm

boost port,

all the jap pistons seem to run the 2 ring pegs fairly close together

wire 1mm rings

the rings are 3mm wide, and the peg are a 1mm deep the flexibilty in the rings hopefully will take the notching

or alternatively will get the barrels rewelded and need boost ports cut in

or will just run the top ring only (RB has been like this for the last 1000 miles)

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mawso
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Mon Mar 23, 2009 10:32 pm

Sorry I don't mean to jump this thread...but regarding running on one ring. I have 65.5mm Wiseco Suzuki piston, which I just spent the last 15 mins trying to find (no joy). One of the pegs, can't remember which now, has sunk or worn away. Presuming it's the bottom ring; will I be able to run on just the top alone?

I'm well pissed off with it really as the motor had only done 700 miles with after a rebore with this new piston and then this with ring peg!

Back on topic...who would be willing to repeg it if it's not possible to run on a single ring? I aren't gonna hold anyone responsible for a warranty on it or anything!

Not even the shop who sold me the piston in the first place would help "Mr Wiseco didn't make them to be adapted for Lambrettas you know"

YAMLAM
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Tue Mar 24, 2009 9:49 pm

i dont know if they do it themselves but i have had two DT175 yam pistons repegged by Taffspeed.
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Adspeed
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Tue Mar 24, 2009 9:59 pm

My Wiseco TS setup.......Its been fine for years now.

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