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Re: Unser Ride Re: Of rears and horsepower and speeds

To: "Thomas E. Bryant" <saltracer@awwwsome.com>
Subject: Re: Unser Ride Re: Of rears and horsepower and speeds
From: Richard Kensicki <richk@sparta-junction.com>
Date: Thu, 06 Jan 2000 21:18:31 -0500
Tom
    Can you tell me anything about the Ron Benham car? I'm interested in what
motor he was running, can't always presume chevy.

Rich

Thomas E. Bryant wrote:

> Richard,
> Yes, the Bobby Unser of Indy fame is the one. He was driving the
> roadster formerly owned and built by Ron Benham. It was purchased and
> prepared by the Leasing Company that Ron Hope is connected with for the
> express purpose of getting Bobby into the 200MPH Club. This is the same
> company that ran the same car, while Ron Benham still had it, pulling a
> U-Haul Trailer.
>
> So far as the gear discussion goes, I don't know of any hard facts and
> figures on HP loss through these various units. We run a Halibrand
> Championship unit with a 4.11 ring & Pinion in our car. I have always
> run the quick change rear axles for the convenience. I'm sure that I pay
> a price for this, if I was to build another car it most likely would not
> have a quick change, we don't really change the gear that often anyway
> except changing back and forth from Bonneville and the Lakes.
>
> Richard Kensicki wrote:
> >
> > The land-speed mail is getting exhausting so I've got some new questions
> >
> > 1. How much HP is lost through the rear end? An article about a
> > competition coupe (early 90's) used a 7.5 rear gear because it took 10
> > less HP  to turn it (compared to a 9) and the salt is too slick to hook
> > up the rear and overload it. I would think a 9 inch rear would be needed
> > to run the paving at Maxton.
> >
> > 2. Noticed that no one seems to use a quick change rear (what I've seen
> > at least), is it the cost or drive train loss?
> >
> > 3. Anyone want to estimate how much HP would be needed push a D/GMR to
> > 225? I see that the record is from 93 at 223 by B. Unser. Is that the B.
> > I think it is? This record is very close to C/GMR of 225. Was this just
> > a hot setup that worked and made the record difficult to break?
> >
> > 4. I'm waiting on a rule book but wanted to know if going to fuel or
> > blower bumps you up a class without a cubic inch change? Thought I read
> > that somewhere but can't verify it.
> >
> > Rich




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