Shot Peened Rims - Poor Man's "Forged"?
#1
Shot Peened Rims - Poor Man's "Forged"?
To start this off, I found some rims by a company KINESIS that claims their wheels are both FORGED and SHOT PEENED.
http://wheelsperformancecom.stores.y...t/kinesis.html
I have seen some discussion in the Forced Induction section about shot peening internals, gears for the tranny, etc, to improve strength. If I remember correctly, shot peening does not actually cost that much.
So my question is, have any track junkies heard of taking a lightweight track rim, that is NOT forged, and getting it shot-peened (then probably powdercoated) ?
It would be a pretty good deal IMO to get cheap, light track rims, and get them shot peened / powdercoated for extra strength on the street/track.
What do you guys all think?
http://wheelsperformancecom.stores.y...t/kinesis.html
I have seen some discussion in the Forced Induction section about shot peening internals, gears for the tranny, etc, to improve strength. If I remember correctly, shot peening does not actually cost that much.
So my question is, have any track junkies heard of taking a lightweight track rim, that is NOT forged, and getting it shot-peened (then probably powdercoated) ?
It would be a pretty good deal IMO to get cheap, light track rims, and get them shot peened / powdercoated for extra strength on the street/track.
What do you guys all think?
#3
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I had a sponsorship offer from them. Lexani just bought them out and they seemed ok, but had some bending issues on the track. I don't know about shot-peening a non-forged wheel or anything though.
#5
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Typically shot peening will induce compressive stresses to a depth of 1/4 to 1/2 the diameter of the shot (shot particles are .1 to 1.0 mm in diameter).
This is good for giving the wheels the ability to take on more stress before crack propagation occurs.
With a proper heat-treat, hardening process, and temper cycle, you probably won't ever need the addition of peening.
Is it overkill? IMO for the application of a wheel....yes
This is good for giving the wheels the ability to take on more stress before crack propagation occurs.
With a proper heat-treat, hardening process, and temper cycle, you probably won't ever need the addition of peening.
Is it overkill? IMO for the application of a wheel....yes
#6
Originally Posted by jtabraham
Typically shot peening will induce compressive stresses to a depth of 1/4 to 1/2 the diameter of the shot (shot particles are .1 to 1.0 mm in diameter).
This is good for giving the wheels the ability to take on more stress before crack propagation occurs.
With a proper heat-treat, hardening process, and temper cycle, you probably won't ever need the addition of peening.
Is it overkill? IMO for the application of a wheel....yes
This is good for giving the wheels the ability to take on more stress before crack propagation occurs.
With a proper heat-treat, hardening process, and temper cycle, you probably won't ever need the addition of peening.
Is it overkill? IMO for the application of a wheel....yes
Are most cast rims heat treated, etc, as you mentioned?
Thanks for your input.
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#10
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I would love to have a set of Kinesis. They are big on serious track cars and Porsches, mostly because you can have them custom made to your specific width and offset. one reason why they cost so much.
#12
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Shot-peening not recommended!
Originally Posted by jtabraham
Typically shot peening will induce compressive stresses to a depth of 1/4 to 1/2 the diameter of the shot (shot particles are .1 to 1.0 mm in diameter).
This is good for giving the wheels the ability to take on more stress before crack propagation occurs.
With a proper heat-treat, hardening process, and temper cycle, you probably won't ever need the addition of peening.
Is it overkill? IMO for the application of a wheel....yes
This is good for giving the wheels the ability to take on more stress before crack propagation occurs.
With a proper heat-treat, hardening process, and temper cycle, you probably won't ever need the addition of peening.
Is it overkill? IMO for the application of a wheel....yes
BTW, I would not recommend having your wheels shot-peened unless by a certified professional, and even then I concur that it is wasting money. (The statement about "it is a cheap process" worries me! ) Shot-peening is such an operator-dependant process, that if a guy did not know what he was doing with the shot blaster, he could actually warp the wheel in question if the blast gun was allowed to "dwell" on one area too long - it is kind of an art to do it right. Aerospace companies certify their folks who perform shot-peening.
cheers,
ChinaClipper
Z Club of Texas
'03 Z VIN #00159
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