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Old 01-24-2005, 07:43 PM   #1
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Default Rollout

Hey ppl.

I was wondering what the ballpark rollout should be with the following motors:

Reedi ti 9x2
orion 12x2
atlas 13x2
atlas 23t

I ask for rollout as gearing is somewhat inaccurate, depends on tire diameter.(gear ratio will do if you give tire dia)
I run on asphalt (carpark Track ) 50(approx)mtr straight easy infield , frewer foam tires.
I use three cars :

TB Evo3 surikahn (12 and 13x2 )
yoko MR4TC Pro (9x2)
xpress pro 23t

Your help is appreciated

cheers
loopy
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Old 01-25-2005, 07:02 AM   #2
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Default Re: Rollout

Quote:
Originally posted by loopedeloop

Reedi ti 9x2
orion 12x2
atlas 13x2
atlas 23t


TB Evo3 surikahn (12 and 13x2 )
yoko MR4TC Pro (9x2)
xpress pro 23t

For a wide open track like that:

In a TC, start with 21 MMPR for the 9x2, 23 MMPR for the 12x2 and the 13x2 and 28 MMPR for the 23T.

Go up or down from there depending on how hot your motor is, how much puch you have, etc..
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Old 01-27-2005, 03:56 AM   #3
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Talking

Thanks man
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Old 01-29-2005, 08:49 PM   #4
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Thumbs up Re: Re: Rollout

Quote:
Originally posted by ddesros2
For a wide open track like that:

In a TC, start with 21 MMPR for the 9x2, 23 MMPR for the 12x2 and the 13x2 and 28 MMPR for the 23T.

Go up or down from there depending on how hot your motor is, how much puch you have, etc..
Excellent!!

I was running at least 9mm too much rollout on my 9x2.

With it at 22 mm the car is ballistic , though i think dropping to 20/21 will best suit our track.
cant wait till next raceday as I think the old yoko will outpace a few newer better cars


Thanks again

Geoff
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Old 01-30-2005, 04:17 PM   #5
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what exactly is "rollout"? someone please essplain to a noobee!
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Old 01-30-2005, 04:35 PM   #6
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Quote:
Originally posted by RCNitroDude999
what exactly is "rollout"? someone please essplain to a noobee!
Rollout is a very accurate way to gear different cars the same.

IT's the distance your tire rotates for every 1 turn your pinion makes.

So if someone says there running a 24.5mm rollout that means that for every 1 turn there motor/pinion make the tire will move 24.5mm along the ground.
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Old 01-30-2005, 05:23 PM   #7
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Furthur to the above , its an easy way to express gearing ,taking into account the different tire diameters available
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