mchapman

iTrader: (1)

Amy posted in the FI forum that from 500crankHP to 1000crankHP
is perhaps a force more than two times? And that it might be exponential.

Good point.

mchapman

iTrader: (1)

I got an email back from a company in AU who does cryo and shot peening, here is his reply:

____

Murray,

Block . . . I cannot do because of size . . . benefit would probbaly be small anyway!
Rods . . . $20 each. Gain depends on material and manufacturing technique . . . 2 - 5% gain would be possible. Greater gains with dressing and shot peening . . . 20 to 30% increase in fatigue strength is possible. Note that cryo on rods would null any prior shot peening, so they would have to be repeened after cryo.

Regards, Stephen Hooker

____


FYI Ive emailed him again asking for Shot peening costs.

Well a combination of both techniques sounds like you could get some decent gains.

These were the guys and they are in NSW.
http://members.ozemail.com.au/~mtce/capabilities.htm

mchapman

iTrader: (1)

I got another email back...

Aluminium rods . . . cryo will not increase strength, but will stress relieve to a certain extent which is beneficial. We do shot peen, and that will improve the fatigue resistance of the aluminium rods as well . . . cost is $15 per rod.

There you go. Aluminum isnt good for a number of reasons.

I like the prices though