Hi all,
in my mailbox today I got some questions about the RMSh tracks that I'm really unable to answer. So I turn to all the knowledgeable members here with some hope !

Here are the Q?

What is the RMSH track friction coefficient on dry road(approximately)

What is the aerodynamics Drag coefficient of tank(approximately) I guess the tank in question is the T-72.

They look like final questions for Who wants to be a Millionnaire?
TIA

Olivier

"What is the unladen airspeed of a swallow?"

"Do you mean a European swallow or a African Swallow?"

"I don't know....aaaaaaaaaaah!"

Sorry, had to do it.

Once you got the right answer to those questions the really tricky part begins: how do you scale it down to 1/35 and will one have to modify the Tamiya tracks to make them correct?

/E

Well according to my reference,in 1972 the Russians make some test at "Tankograd wind tunnel" to improve it. They thought to add a front and a rear wing to their T-55s...
But in the end they didn't

seems like there are variables according to surface driven on.
http://hpwizard.com/tire-friction-coefficient.html

Thanks for the link Tim. I just have to suggest to the webmaster to add various tracks type in his database

Olivier

This is likely an engineering student do a design project on a drivetrain/transmission...

Sizeable differences on surface, even between types. The difference between brushed concrete and sealed asphalt is very significant. New track vs. old track is going to change things as well. ~0.75 for kinetic/dynamic friction is good enough for this exercise.

Aero drag on a tank isn't important since they operate at relatively slow speeds. If I had to venture a guess, ~0.8 is close enough.

Thanks for your input Jesse. I'll pass all this info on the guy who contacted me.

Olivier