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Old 2002.02.02, 03:45 AM   #1
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Join Date: Jan 2002
Location: Singapore
Posts: 7
Front to rear wheel balance under power

I have noticed that my Ferrari has a problem with front wheel traction under power when turning.

When Im in a turn and put the power down, the front wheels lose traction and the car starts to steer straight.

Initially I thought that because of the traction of the tyres and the low CG, the power of the motor was causing the front wheels to straigten up when in a turn. But on closer inspection (used a video camera and played back in slow mo I notice that the front wheels will be in full lock and the car just straightens up.

This is really easy to see on a flat set of batteries as the car tends to be a bit slower and its easier to see the orientation of the front steering.

Apart from putting foams on, do others actively balance thier cars out with weights? Will a set of negative camber knuckes improve this and would softer front suspension make any difference?

I dont want to go the foams rout as there are a group of us that race together and we have decided that we would modify the car any way we want, but not change the tyres (a-la F1 racing rules, all tyres from bridgestone or michelin are the same from each team)
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Old 2002.02.02, 09:56 AM   #2
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Join Date: Dec 2001
Location: Bristol, England
Posts: 3,610
F1 Traction..


You are a true F1 enthusiast sticking to the tyre rule
If you don't want to go the foam route, perhaps trying some genuine Kyosho soft compound tyres, complete with grooves

I read a Thread a while back about someone in The Pilipines who races on a track. he found an ideal setup and broke the track record by hardening the suspension up.

In fact, he went one better and replaced rear and front springs with rubber cuttings made from bicycle valves. He called it a 'karting setup'. He reckons it worked fairly well..

As for me, I polished the front kingpins by putting them in a Dremel and using fine sandapaper to make them smooth and shiny. This does improve the steering and front shock response, as the F1's kingpins are really rough.

I replaced the standard front springs with some spare yellow (medium) springs from my Mini-Z saloon. They are identical in length.
On the rear, I used small spacers under the springs to harden the rear end up a bit too.
So far so good, but to be honest, I haven't really tried it in a track or racing environment.

I haven't got any toe-in steering bars, or negative camber steering knuckles yet, but they are going to be in my next order from the shop, as well as some GPM foams..
Toe in increases top-speed stability and camber can improve cornering.

A few other parts I reccomend is a ball-diff, bearings and an X-Speed motor.

Enjooy your Ferrari.. and the upcoming F1 season

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Old 2002.02.02, 03:06 PM   #3
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radial1, it sounds like you're pushing, and there's a few things you can do to fix it: 1) slow down 2) use softer compound tires up front 3) soften your front suspension. My F1 would also push a great deal, and when it wasn't pushing and the front end did get traction, the rear end would break loose. So now I'm running foams, which are the ultimate solution IMO but not if you're staying stock I guess.
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