02-06-2018, 02:18 PM
great thread lotta good info.
steve w,
if i may,without annoying you, ask for a little a little more info.
it would be awesome.
what torque did you use on the rod bolts that broke?
and was it an open motor, or over bored, or run up way into high revs?
the more info we have the better we can understand what happens and why.
i know for most of my motors in the mc91 class running them under 12500 is a good idea i don't always follow.
i myself have only run those bolts in the smaller mc49 motor that i built from parts.
it's a loaner on a loaner kart and has held up good.
but i doubt it gets spun up very high unless the owner himself is driving it.
there was some discussion about producing new rod bolts ourselves but that fizzled out.
if possible maybe buying a few pounds of the good bolts directly from us motors might be an option??
i'd be happy to create a buying pool here on the forum if they'd sell at a decent price point.
i doubt anyone needs a few thousand but i'd be happy with fifty or so if i could get them at around ten bucks a pair.
to get it that low we'd have to buy a BIG pile and that would get pricey i think.
i'm thinking we could do like car clubs and get a better bulk price by pooling our money.
typically those in the pool get a deeply discounted price and the extras are sold off at market value.
there would be no need to actually collect any money till we get enough people to commit to purchase and an agreement from us motors for a bulk purchase.
or who knows what rod bolts are being used in the new repop mc91 rods and what is the spec on them?
steve w,
if i may,without annoying you, ask for a little a little more info.
it would be awesome.
what torque did you use on the rod bolts that broke?
and was it an open motor, or over bored, or run up way into high revs?
the more info we have the better we can understand what happens and why.
i know for most of my motors in the mc91 class running them under 12500 is a good idea i don't always follow.
i myself have only run those bolts in the smaller mc49 motor that i built from parts.
it's a loaner on a loaner kart and has held up good.
but i doubt it gets spun up very high unless the owner himself is driving it.
there was some discussion about producing new rod bolts ourselves but that fizzled out.
if possible maybe buying a few pounds of the good bolts directly from us motors might be an option??
i'd be happy to create a buying pool here on the forum if they'd sell at a decent price point.
i doubt anyone needs a few thousand but i'd be happy with fifty or so if i could get them at around ten bucks a pair.
to get it that low we'd have to buy a BIG pile and that would get pricey i think.
i'm thinking we could do like car clubs and get a better bulk price by pooling our money.
typically those in the pool get a deeply discounted price and the extras are sold off at market value.
there would be no need to actually collect any money till we get enough people to commit to purchase and an agreement from us motors for a bulk purchase.
or who knows what rod bolts are being used in the new repop mc91 rods and what is the spec on them?
Dave L.