Chris,
No worries. Others have been running the Pauters very hard with good results. I
suspect that both the H-Beam and I-Beam designs, as well as the Pauter
"cross-beam (an inside-out H beam)" are by design more than strong enough for
our engines but like any product we buy there are going to be some random
quality control problems, and rod bolt breakage. That said, I would be scared
of putting those rods that are made in China in my engines.
This has been a healthy discussion and I have learned something. I got my first
set of Carillo's with the engine that came in the car Marcel's now has. When I
bought that hulk for restoration it had a mixed set of Carillos inside with one
rod replaced with a slightly different, newer Carillo. I concluded that the set
would be unreliable and I replaced them with new ones. They might be fine with
new, rod bolts.
Bob Kramer
rkramer3@austin.rr.com
---- MadMarx <tr4racing@googlemail.com> wrote:
> Hi Bob,
>
> I'm sorry to worry you, that wasn't my intention.
> But maths doesn't lie. Must be a reason why high volume car producer make all
> rods of the same pattern. It would be a lot cheaper to make them a square
> type or Carrillo H-beam typ then the I-beam version you find in all cars.
> I-beam is the best pattern to handle the forces in an piston engine.
>
> Cheers
> Chris
>
>
> -----Ursprüngliche Nachricht-----
> Von: Fot [mailto:fot-bounces@autox.team.net] Im Auftrag von
> rkramer3@austin.rr.com
> Gesendet: Donnerstag, 23. Juli 2015 00:32
> An: Marcel Van Mulders
> Cc: fot@autox.team.net
> Betreff: Re: [Fot] FW: Racing rod design
>
> Marcel.
>
> I had a spectacular blow up at Mosport one year, in front of Kas and the
> whole FOT gang. Those were the last stock rods I ever used. LAter I went to
> the Moldex and other than a crack in a journal on a crank on a Moldex after
> running it too hard and hitting 8 grand a few times, I have avoided
> breakage. I prefer it that way and now I am concerned about those Pauters I
> bought. Thanks Chris!
>
> Bob Kramer
> rkramer3@austin.rr.com
>
> ---- Marcel Van Mulders <van.mulders.marcel@telenet.be> wrote:
> > Bob,
> > That makes things clear.
> > I still use the Carrillo's that I bought when I startet racing my TR3A
> > in 2002. About everything broke once or more, except those Carrillo's.
> > The original Triumph conrods can fail, but probably Carrillo and also
> > Pauter rods have an easy time in our racecars?
> > Marcel
> >
> > -----Oorspronkelijk bericht-----
> > Van: rkramer3@austin.rr.com [mailto:rkramer3@austin.rr.com]
> > Verzonden: woensdag 22 juli 2015 22:32
> > Aan: Marcel Van Mulders; 'MadMarx'
> > CC: fot@autox.team.net
> > Onderwerp: Re: FW: [Fot] Racing rod design
> >
> > Marcel,
> >
> > Those are Carillo's on a TR spec Moldex crank spinning Wieseco pistons.
> >
> > I did buy some Pauters but they are in another engine and haven't been
> > tested as hard as the Carillos. I still have a TR4 race car that my
> > son drives and the Pauters are in that engine. It has a camshaft of
> > unknown origin that builds power between 2500- 5500.
> >
> > Bob Kramer
> > rkramer3@austin.rr.com
> >
> > ---- Marcel Van Mulders <van.mulders.marcel@telenet.be> wrote:
> > >
> > >
> > > -----Oorspronkelijk bericht-----
> > > Van: Marcel Van Mulders [mailto:van.mulders.marcel@telenet.be]
> > > Verzonden: woensdag 22 juli 2015 19:29
> > > Aan: 'MadMarx'
> > > Onderwerp: RE: [Fot] Racing rod design
> > >
> > > Hi Chris and Bob,
> > > As you know, I bought Bob's TR4A and I did have a look at the rods :
> > > Pauter may call these rods X-beam but they actually are H-beam rods,
> > > much the same design as the H-beam rods of Carrillo. (b.t.w.
> > > Carrillo's I beam rods are less expensive than their H-beam one's).
> > > Marcel
> > >
> > > -----Oorspronkelijk bericht-----
> > > Van: Fot [mailto:fot-bounces@autox.team.net] Namens MadMarx
> > > Verzonden: dinsdag 21 juli 2015 21:39
> > > Aan: 'FOT'
> > > Onderwerp: Re: [Fot] Racing rod design
> > >
> > > Hi Bob,
> > >
> > > from engineer basis x-beam are the worst you can get. I'll never get
> > > a clue how someone could imagine this design.
> > >
> > > Cheers
> > > Chris
> > >
> > > -----Ursprüngliche Nachricht-----
> > > Von: rkramer3@austin.rr.com [mailto:rkramer3@austin.rr.com]
> > > Gesendet: Dienstag, 21. Juli 2015 21:31
> > > An: 'FOT'; MadMarx
> > > Betreff: Re: [Fot] Racing rod design
> > >
> > >
> > > Chris,http://webmail.roadrunner.com/do/mail/message/reply?msgId=INBO
> > > XD
> > > ELIM68
> > > 586&replyAll=on&referrer=msg#
> > >
> > > Look at Pauter Rods. they advertise their design as an x-beam. I
> > > can't say that they are any better based on long term use but a lot
> > > of us switched over due to the increase cost of Carillo's over time.
> > >
> > > http://pauter.com/parts/rods/
> > >
> > > It just occured to me that you are probably running a custom crank,
> > > Chevy rods with custom pistons to match. They may make comparable
> > > models to fit that too since I believe that setup was designed
> > > around the
> > rods.
> > >
> > > http://webmail.roadrunner.com/do/mail/message/reply?msgId=INBOXDELIM
> > > 68
> > > 586&re
> > > plyAll=on&referrer=msg#
> > > Bob Kramer
> > > rkramer3@austin.rr.com
> > >
> > > ---- MadMarx <tr4racing@googlemail.com> wrote:
> > > > Hi Guys,
> > > >
> > > >
> > > >
> > > > After my engine blow at the last race and a rod in two pieces I
> > > investigated about rod design.
> > > >
> > > >
> > > >
> > > > In US forums I found an interesting opinion:
> > > >
> > > >
> > > >
> > > > H-beam rods are for low rev high torque engine (turbo, compressor)
> > > >
> > > > I-beam are for medium torque engines with high revs
> > > >
> > > >
> > > >
> > > > As engineer I agree with this statement. On high revs the rod
> > > > shaft gets
> > > bended back and forth by the inertia caused by the rotation.
> > > >
> > > > I could imagine that the sharp sides of the H-beam rod will create
> > > > a crack
> > > after a while because the stiffness for bending along the rotation
> > > axis smaller than with an I-beam rod.
> > > >
> > > > That means to me that the fatigue resistance is smaller on an
> > > > H-beam rod
> > > at high revs.
> > > >
> > > > With high revs on a long stroke engine I mean 6000+.
> > > >
> > > >
> > > >
> > > > The manufacturer of the broken H-beam rod was Scat.
> > > >
> > > >
> > > >
> > > > I think next time I order an I-beam rod from Scat.
> > > >
> > > >
> > > >
> > > > What do you think?
> > > >
> > > >
> > > >
> > > > Cheers
> > > >
> > > > Chris
> > > >
> > >
> > > _______________________________________________
> > > fot@autox.team.net
> > >
> > > http://www.fot-racing.com
> > >
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> > > .b
> > > e
> > >
> > >
> > >
> > >
> >
> >
> >
>
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