KS Fats's Gear Question

[Jim Marlett]

I didn't see a new thread yet, so I'll start one for you.

The question was whether or not anyone had tried running two gears in an HA/GR.

I believe the Ram Rods run two gears now. I don't know about the other teams.

If I can ever get off my duff and build one, I'm going to try to figure out how to control more gears. We'll see.

[Rand Man]

The Speed Merchants start in second and shift to high.

[recycler]

Like Rand Man said. We are doing it and have been since day one. The Ramrods started out using 3 gears and gave us a lot of sh*t about leaving in second. Then middle of this year they got some lower rear gears and now they have
"seen the light" LOL There is also a car being built with a 4 speed in it. The builder seems to think we are going the wrong direction- maybe he's right. Time will tell. I think it will all work. You just have to start with a plan and build the car accordingly - matching components to work together the way you have planned.
Brad

[Mr. Mac]

The big secret is getting these 6in wide tires to hook up off the starting, you do the math.

[BRENT in 10-uh-C]

The big secret is getting these 6in wide tires to hook up off the starting, you do the math.

If you would, ...can you help me do the math?

If I were running a 26"-28" tall tire, and wanted to be around 5K in the traps, what "size" of rear gear are you thinking I would need?

[JohnnyFast]

28" dia. tire @ 5000 rpm with a 3.78:1 rear gear = 110 mph.

[Mr. Mac]

Everything looks good on paper,trust me it not always true.
Best way, Test Test Test.