[Fot] Racing rod design

[John Hasty]

Gee Whiz….you guys know a h- - - of a lot more about this than me, but I reason that if Manley etc. make a rod that withstands the rigors of a 800+ hp American V8 turning upwards of 9000 rpm and it costs ½ of what P and C are charging it makes sense to use them…..

John H. Hasty | MULLEN HOLLAND & COOPER P.A.
Attorney at Law
301 South York Street  (zip: 28052)
P.O. Box 488
Gastonia, NC 28053-0488
Telephone: 704.864.6751 | Facsimile: 704.861.8394
JHasty at mhc-law.com<http://@mhc-law.com> | www.mhc-law.com<http://www.mhc-law.com/>

From: Fot [mailto:fot-bounces at autox.team.net] On Behalf Of John Styduhar
Sent: Thursday, July 23, 2015 9:59 AM
To: Christian Marx; Triumph 'Friends of Triumph
Subject: Re: [Fot] Racing rod design

Pauter has been making this design for almost 30 years with zero cold failures.  If it were a poor design they would have changed it out of necessity.  According to a Pauter rep., the main reason they started manufacturing their own rods in the first place was due to the fact that the H beam and I beam rods they were using couldn’t put up with what they were throwing at them with their turbo charged 4cylinder engines.
If you spin a rod bearing, eventually you will break anything.


On Thu, Jul 23, 2015 at 9:49 AM, Christian Marx <tr4racing at googlemail.com<mailto:tr4racing at googlemail.com>> wrote:

I saw the pictures of Pauter.
This type has no material were it needs and too much were it doesn't make sense.  Maybe for very short rods usable.
Am 23.07.2015 14:46 schrieb "John Styduhar" <johnstydo at gmail.com<mailto:johnstydo at gmail.com>>:
The Pauter design is a cross-beam (an inside-out H beam) not an x-beam and shares H-beam design properties because of this.

On Thu, Jul 23, 2015 at 3:34 AM, MadMarx <tr4racing at googlemail.com<mailto:tr4racing at googlemail.com>> wrote:
Today I had a look to a book called race car design.
It also contains engines, and as detail rods and their designs. I, H, blade – no x-beam (seems they never got the idea that someone could get the idea of an x-beam rod)

They said that F1 uses I-beam rods because they have the best stiffness to weight ratio.
Also German DTM-cars use I-beam rods.
https://en.wikipedia.org/wiki/Deutsche_Tourenwagen_Masters


Cheers
Chris

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