The in and out box is a great idea... and I can think of several examples
of cars I looked at on the salt that were set up like that... and yeah
Maxton is so much like a drag race.... I think it is really like El
Mirage.... and Muroc.... just a short course....with Killer traction....
sorta...
We don't do a drag race style start there... but as I evaluate it... there
maybe some merit to rapid up front acceleration... That is why I really do
think the wide ratio for that place is absolutely right....
My little motor just makes so much power on the high end of the RPM
Scale... that the close gears really are the deal for Bonneville....(or at
least I think they are based on the logic presented here)
I wonder what other kind of aids we could use to limit Drag and frictional
loses of the drive train....
I did back the brake shoes off a tick.. and I told the guy who turned the
rotors that I didn't mind a little wobble to kick the pads back in up
front.....(very little) I like the idea of the light grease also.. I
wonder what Nascar is using in their rear ends with that oil cooler set
up....I went with synthetics as everyone here seems to be kinda big on
them... for my gears....
Keith
----------
> From: ardunbill@webtv.net
> To: land-speed@autox.team.net
> Subject: Transmission Losses
> Date: Saturday, May 08, 1999 11:25 AM
>
> Responding to the recent chat about losing 100 HP between the engine and
> drive wheels. That's a lot to lose.
>
> It's not a new idea, I gather it's been done for decades at Bonneville,
> but why not use an inexpensive three or four-speed gearbox with
> everything removed but what makes up top gear and neutral. Reverse
> parts removed and locked out permanently. A light oil such as 5W-30
> inside just to lube the bearings(which are lightly loaded as they just
> pass-through the torque). Push-start the car up to 50 or 60 mph in top
> gear and let it motor away on up to its top speed. A heavy steel
> flywheel to assist things. No shifting for the driver to bother about.
>
> Question is whether the car would reach top speed in a mile this way at
> Maxton, and weight vs torque would determine that.
>
> Re the rear axle, what about 75W-90 oil to reduce the viscosity drag?
> In a short sprint like this, would any harm come to the R & P and
> bearings?
>
> If the 25% loss cited was cut in half, that would still be 50 HP in the
> original example.
>
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