Gentlemen
At the last board meeting they voted to look into buying two new P&G units annd
other measuring equipment. I know it wont please everyone but at least it is new
and capable of checking the larger engines. Keep up the good conversation, it's
healty and I only have to time youse guys with very accurate computerized stuff.
Some say they wouldn'd do my job at any cost, hell man sure glad I don't
inspect.
Glen
Jim Dincau wrote:
> Tom
> I think the problem is twofold; one the P&G that the cars use won't
> measure small displacements accurately and two the bike tech guys are
> totally separate from the car guys. I haven't heard any stories re: blowing
> head gaskets because of ATF being used to check volume but if I accidentally
> filled a cylinder with oil on the modified I would pull the head to clean it
> out.
> Jim
> ----- Original Message -----
> From: Tom Neimeyer <3cbxs@ev1.net>
> To: <land-speed@autox.team.net>
> Sent: Saturday, December 16, 2000 2:06 PM
> Subject: Verifying Displacement
>
> > I have heard of the P&G pump and wonder why it was not used on our
> > motorcycle last year? Instead we got to fill it with automatic
> transmission
> > fluid. On the next run we blew the head gasket in that cylinder. We
> tried
> > to "wash", "blow" and clean out all the ATF. I have heard this is common
> > (blowing head gasket on cylinder checked with ATF) any thoughts about
> this?
> >
> > Regards, Tom
> >
> > ----- Original Message -----
> > From: "Jim Dincau" <jdincau@qnet.com>
> > To: "Chuck Rothfuss" <crothfuss@coastalnet.com>;
> <land-speed@autox.team.net>
> > Sent: Saturday, December 16, 2000 2:38 PM
> > Subject: Re: Rotarys
> >
> >
> > > Chuck
> > > The P&G "pump" is a transparent cylinder with a free piston in it.
> It
> > > is plumbed to a spark plug hole, the intake and exhaust valves are
> > disabled
> > > and the engine turned over with the starter. Air going in and out of the
> > > cylinder bumps an O ring to indicate maximum travel. Volume is directly
> > read
> > > by calibrations on the side of the cylinder. Several possibilities for
> > error
> > > exist, air temperature, piston and O-ring to wall friction in the
> > measuring
> > > cyl and rotational speed. Dan measures the cylinder temp and apples a
> > > correction factor but the other two are hard to keep constant. That is
> why
> > > for engines within 3% of the max or min they require direct measurement.
> > > Hope that was helpful.
> > > Jim in Palmdale who at any minute has to give up the computer to his
> > > granddaughter
> > >
> > > ----- Original Message -----
> > > From: Chuck Rothfuss <crothfuss@coastalnet.com>
> > > To: <land-speed@autox.team.net>
> > > Sent: Saturday, December 16, 2000 10:13 AM
> > > Subject: Re: Rotarys
> > >
> > >
> > > > Dave, List,
> > > >
> > > > I've offered to provide pieces to be measured by ECTA officials,
> and
> > > have
> > > > explained repeatedly the futility, as Dave mentioned, of trying to
> alter
> > > the
> > > > factory dimensions. (making an expensive tear-down to measure one of
> my
> > > > engines unnecessary) All seems to rest with the SCTA rules commitee,
> as
> > > the
> > > > ECTA rules mirror what is established by the senior organization.
> > > >
> > > > I'm not familiar enough with the P&G ("pumping") equipment, that is
> > now
> > > > apparently available on both coasts, to understand how testing is
> > > conducted.
> > > > Can someone shed some light on this, and the potential use of such
> > > equipment
> > > > on a rotary? Since we are comparing the breathing capability of
> engines
> > > > this certainly seems like a fair way to compare them.
> > > >
> > > > As a non-engineer I figure out most things by simply fumbling
> around
> > > and
> > > > experimenting with things til I get it right. (I call it "FUN") If I
> > have
> > > > to run down someone with "pumping" equipment and "pump" one of my nice
> > > tight
> > > > 13B's I'd be happy to do that.
> > > >
> > > > Chuck Rothfuss
> > > > ECTA
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