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
> >
> > Donate: http://www.team.net/donate.html
> > Archive: http://www.team.net/archive
> > Forums: http://www.team.net/forums
> > Unsubscribe/Manage:
> > http://autox.team.net/mailman/options/fot/van.mulders.marcel@telenet
> > .b
> > e
> >
> >
> >
> >
>
>
>
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Donate: http://www.team.net/donate.html
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
Unsubscribe/Manage:
http://autox.team.net/mailman/options/fot/tr4racing@googlemail.com
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Donate: http://www.team.net/donate.html
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
Unsubscribe/Manage:
http://autox.team.net/mailman/options/fot/mharc@autox.team.net
|