land-speed
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Re: Transmissions

To: Keith Turk <kturk@ala.net>
Subject: Re: Transmissions
From: Dave Dahlgren <dahlgren@uconect.net>
Date: Tue, 20 Apr 1999 10:11:35 -0400
you need something that sounds like 2.0  1.4  1.15 1.05 1.0
Dave Dahlgren

Keith Turk wrote:
> 
> you folks realize your destroying my Transmission plans.... shot a hole in
> my Grand Scheme you did... it was my thought that I could accelerate from
> Zero faster if I had a wide ratio.... trans....
> 
> At Maxton on the mile this may even be true... But I understand the logic
> of staying in a proper torque band and the decrease in RPM drop between the
> gears.... AHHH now to look at transmissions again... and this was a Doug
> Nash / now Richmond Gears T-10 that I bought special for the wide ratio...
> and it worked like stink in a Autobahn cruiser.... and didn't even need a
> push truck at every stop light
> 
> I know of a 5 speed Doug Nash with extra gear sets here in town... I may
> look into that.... it has a 1:1 output...  I don't know if it has straight
> cut gears or not.... is that an issue?
> 
> Keith...
> 
> ----------
> > From: John Beckett <johnbeck@blueridge.cc.nc.us>
> > To: land-speed@autox.team.net
> > Subject: Re: Transmissions
> > Date: Tuesday, April 20, 1999 8:30 AM
> >
> >       Dave makes a very interesting point about transmissions. A very
> important
> > and often over looked part of the total combination. My current car has a
> > close ratio, 2.32 first gear, even that is to much. May next car will
> have
> > a very close ratio 4-speed, in the 2.0 to 1.9 range.
> >       Discovered last year that exceleration through the first two miles 
>could
> > have as much as a 5 MPH difference in the five mile speed.
> >
> >       John Beckett
> >
> >
> > At 10:26 AM 4/17/99 -0400, Dave Dahlgren wrote:
> > >I am a newcomer to land speed racing,since '93 but have raced cars
> > >professionally since I was 22, am 47 now.. So when I am out there I am
> > >at work.  Land speed racing is no different than any other that I have
> > >been to. There are a ton of tough decisions to make and I am not afraid
> > >to make them. The most important ones revolve around will I make it to
> > >the other end ? My philosophy may not work for most as I plan on setting
> > >a record when we go and at the end of the meet there does not have to be
> > >much left. This does not work for most people as the cost is $$$$$ . But
> > >every pass other than license passes on the car has been a record pass
> > >or the qualifying one before it. have probably jinxed this year by
> > >saying that but do not believe that much in luck, just hard work and
> > >good engineering. If I were in your shoes I would make all the trades
> > >necessary in order to get down the track and pump up the power as money
> > >allows. The only exception to this would be a transmission that allows
> > >you to change gear ratios at will.
> >
> >       "Everyone that I have ever helped out there almost always had an
> > impossible combination of gear ratios. either overpower the track early
> on
> > or gear splits that can not be done and stay in the power band on the big
> > end.. There is as much thought required in the transmission than almost
> any
> > other part of the combination. read you NEED a CLOSE RATIO TRANSMISSION
> !!"
> >
> > >
> > >So buy the dry sump,best fire suit and system,best
> > >suspension,transmission. Blow off the 10,000 dollar cylinder heads for
> > >now and the paint well why bother if you do not have the other stuff. It
> > >is not much fun changing bearings in a pretty car, or worse yet dragging
> > >the remains on the trailer after you roll it up in a ball because you
> > >bought the paint instead of the Koni shocks..!
> > >
> > >Regards,
> > >Dave Dahlgren
> > >
> > >Keith Turk wrote:
> > >>
> > >> and your opinion is worth more then the cup of coffee... thanks.....K
> > >>
> > >> now how to do all that on a budget.... Guess I have to settle for the
> fun
> > >> eh...
> > >>
> > >> Bud I am dead serious about this one thing in my life... someday I am
> going
> > >> to be in the two club... if it takes multiple valves and 10 speeds
> then
> > >> that is what I will acquire...  Been down a ton of roads over the
> years...
> > >> and I have always accomplished the goals I set for myself... this is
> one
> > >> that has been lurking in the back of my mind since I was twenty years
> > >> old... (41 now)
> > >>
> > >> My Partner has to bring Reality with him and keep me grounded... we
> are
> > >> here to have fun.... and the record someday will happen... I seriously
> > >> don't expect it this year.... I expect to drive the long course and
> have a
> > >> ball... hey and meet my newly made friends from here...  But most of
> all I
> > >> expect to take home a ton of lessons on what to and what not to do at
> > >> Bonneville....
> > >>
> > >> Learning Curve here is pretty steep... It was kinda like that with the
> > >> AH-64 Apache when we first started flying it... none of us had a clue
> and
> > >> the engineers weren't much help in communicating on the
> Pilot/instructor
> > >> pilot level... we had to assimilate a ton of new information and then
> > >> decide what was important and what wasn't... Based on all the kids we
> > >> trained and the outcome of their work... I would say we did a pretty
> fair
> > >> job....
> > >>
> > >> This is a ton like that.. for me at least...
> > >>
> > >> I honestly appreciate your being here and lending your knowledge to
> those
> > >> of us that aren't as well versed..
> > >>
> > >> Keith
> > >>
> > >> ----------
> > >> > From: Dave Dahlgren <dahlgren@uconect.net>
> > >> > To: Chris R Harris <yesford@clear.net.nz>
> > >> > Cc: Land-speed@autox.team.net
> > >> > Subject: Re: Belt camshaft drives
> > >> > Date: Saturday, April 17, 1999 5:05 AM
> > >> >
> > >> > Best pushrod engines belong to NHRA Pro Stock 1250 hp 500
> inches..2.5 HP
> > >> > per Cu In  that would be 887 hp 355. Winston Cup is around 720
> HP.2.03
> > >> > HP per Cu In.. The prostock guys run them... Belt drive is like a
> dry
> > >> > sump, big money up front hardly any later.. There are many parts
> like
> > >> > that .. The best is usually cheaper in the long run.. Let's face it
> we
> > >> > are out there to do 2 things, Have FUN and Break records!!! It is
> pretty
> > >> > hard to break records if you are not running the best money can buy,
> and
> > >> > I have the most fun breaking records.. Nothing like coffee in the
> > >> > morning at impound :>)  Parts i will not race without, dry sump,
> EFI, 4
> > >> > valves per cylinder ( or more), slide throttles, and a trans that
> has
> > >> > many gears.. the rest is usually not a record breaking combination..
> > >> >
> > >> > Just my opinion at least.
> > >> >
> > >> > Regards,
> > >> >
> > >> > Dave Dahlgren
> > >> > Engine Management Systems
> > >> >
> > >> > < Commercial >
> > >> > For those of you that want slide throttles contact me off list we
> make
> > >> > them here. Do EFI also Won 24 hr Daytona twice set pole etc. and a
> > >> > zillion races in Pro Sports Car. Also G\GL and G\FL at Bonneville
> went
> > >> > (215 in Australia) for many years.. Have setups for Ford yates
> > >> > head,Chevy 18 deg,Cosworth BD and YB, Porsche 911, ferrari 348,
> mazda
> > >> > 13b, and any custom thing you can think of.. but it is expensive...
> > >> > <End Commercial >
> > >
> >
> >

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