T-100 Bonneville/Battle Mountain-trip results

[euromodder]

Originally Posted by aerohead

The H-rated tires have a shorter sidewall and impact the gearing such that I will have to over-rev the engine,something I'm not real comfortable about.

What size / speed / load rating do you need in order not to compromise the gearing ?

[miket]

Originally Posted by Cd

It sure would save a ton of fuel not having to drive all that way though.
Can't you just estimate the top speed using the figures gained at the one mile mark ?

LOL at top speed he might drive the extra 5 miles in the same time it would take him to carefully estimate the result.

[aerohead]

Originally Posted by Cd

It sure would save a ton of fuel not having to drive all that way though.
Can't you just estimate the top speed using the figures gained at the one mile mark ?

Cd,that's a good question and I'm not sure about the answer.
Without a dynamometer survey I don't actually know the power.Without the top speed I can't know the Cd if the engines at rated power,adjusted for density altitude on race day,to make sense of the acceleration.
If I know the rpm at 1-mile at the Texas-Mile,then do a dyno test at that rpm at WOT and adjust for Texas-Mile weather I might 'fix' the power at that rpm ,then extrapolate.
If I go to Bonneville I get to make the runs,maybe long course,plus I get to do all the other things and see all the things typically only seen at Bonneville.
It's a pain alright,but I get to do Battle Mountain also,so in a way,it can't be beat,nasty salt and all!

[aerohead]

Originally Posted by euromodder

What size / speed / load rating do you need in order not to compromise the gearing ?

The wheels are 15-inch.Speed rating must be at least H.Off hand,I don't remember the load rationg.The original tires had a 70-series aspect ratio.If I pushed the max power rpm,the gearing was good for around 156-mph.
The H-rated tires on the truck are 60-series.Hankook manufactured them and was only make I could readily get in a 15-inch size.
Goodyear makes their EAGLE racing tires which is typically what is run at Bonneville.I will look into their sizing options for the rear wheels only.