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Old 04-02-2009, 09:43 AM   #1
Marc Miller
Birel & Rotax Specialist
 
Join Date: Jan 2008
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Default Rain Setups

Here are some notes for Rain Setups
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Old 04-02-2009, 09:45 AM   #2
Marc Miller
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If the track is wet enough to throw "rooster tails" off the tires I would suggest using:
- 75mm front hubs with at least 2 thick spacers wide
- 1.5 degree to 3 degree caster
- 5mm toe out
- 5mm positive camber
- no front bar
- B axle
- short hubs with the hubs set 1/4" in off the end of the axle
- Normally we use the Freeline cast aluminum wheels. As the track starts to dry out you can run more of a dry set up with the rain tires on.
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Old 04-02-2009, 09:48 AM   #3
Marc Miller
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When the track is very wet I have found success using:
- 1 degree pills top and bottom to create up to 1cm (10mm) positive camber while the rest of the adjustment in the pills is used to add caster
- Seat struts on or off will depend on the amount of water on the track and the speed of the turns
- Very Wet and slow corners with the struts off, slightly wet and fast corners with the struts on
- I have also found success with softer axles to help in the slow corners and long hubs to add side bite in the fast corners.
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Old 04-02-2009, 09:50 AM   #4
Marc Miller
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Z32 Rain Setup

- Widened front to max stock hub position
- removed front bar
- castor: 1.5 degree pills
- Rear: narrowed hubs all the way up, removed 3rd bearing bolts, kept seat struts attached and tight
- wheels: aluminum Freeline rain wheels
- starting pressure - 18-20 lbs.
- toe - 2mm out wet and dry
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