8.5T motor gearing in a B4

[jaxx]

I've just got an 8.5T motor as a 6.5T is too quick for my poor driving style. ??/?? seems about the most popular! there are just so many different combo's. But what do you run? I'll be outdoors on Astroturf. So can you give a good starting point or recommend gearing for spur gears. Ta

[coolcars782]

This website might help you mate.

http://www.comeseethis.com/gearing/Default.aspx


Carl

[mdb_75]

I'm using a 23T pinion with the standard spur gear (81T??) -that's using an 8.5T Losi motor.

[jaxx]

is that in a T4 or a B4 cos the roll length of the wheels affects it, Ta though

Ooh that gear chart is nerd porn............. gonna go crack one out ( is that the expression) to the sums on there.

[mikeyscott]

Shame they don't list Speed Passion v3 motors...

[mdb_75]

It's in a B4, my sig's not been updated sorry! Think I was using a 17T or so in the T4.

[jaxx]

OK, Ta

[Aran]

Originally Posted by coolcars782

This website might help you mate.

http://www.comeseethis.com/gearing/Default.aspx


Carl

thanks for posting that carl.
will come in handy

[mikeyscott]

Originally Posted by Aran

thanks for posting that carl.
will come in handy

yeah cool site. What's the most similar motor to a speed passion on this site?

[DCM]

25t on a Tekin 8.5

[Matt-h]

None!

They all rev different, have different torque and like to run at different temps.

Not sure how that site helps really.

Mike, check your PM

Matt

[carpenterdean]

i run 24t with an 81t spur on a lrp x12 8.5 and it seems great, although i'm pretty crap.

[jaxx]

[jaxx]

Originally Posted by Matt-h

None!

They all rev different, have different torque and like to run at different temps.

Not sure how that site helps really.

I agree now about the gearing site, I bought a robitronics 8.5 which is about the same KV's as a 7.5 speed passion and £20 cheaper. Didn't bother with the gear site, just asked Keith at Microtech for a good starting point. Advice from a quality racer with amazing knowledge was better than a lot of numbers. The pinion I am running at the mo is 4 over what was recommended by the site, But was 1 away from what keith told me and is sweet as a nut.

[Beanie]

Originally Posted by mikeyscott

yeah cool site. What's the most similar motor to a speed passion on this site?

From my experience then i've posted up requests to the guy who runs this site to add motors and things and he's done it within days....I like!