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post #1 of 9 (permalink) Old 10-05-2008, 12:20 AM Thread Starter
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Whiplash Race Oct 4th

Another win for Jay. Congrats!!! 5th for Aaron
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post #2 of 9 (permalink) Old 10-05-2008, 10:10 PM
 
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Re: Whiplash Race Oct 4th

Another fun weekend!!!! I placed 1st in my class and 3rd overall. Only guys to beat me were 2 baja pro class drivers. First place got me by about 2 minutes while 2nd place beat me by 40 seconds or so. Race was right at an hour and a half.

Just as a reminder..............my rig is TOTALLY stock with the exception of some reinforced rear, lower link arms that go across in the back!!! No other performance mods, reinforcements, nothing! Only safety equipment added. And I am hanging with guys who have $30 and $40 k into their rigs and have been racing for years! Makes me feel good. Anyone wanting to be competitive in a UTV class with little money into it, a Redline is the way to go.

This race was a shorter course race. Ran 17 laps in total. There were a couple of things that I noticed in this race is how well the Redline Revolt can handle jumps and whoops. On a number of occassions, I was able to pass guys while in the AIR coming off of a jump. I was taking doubles, accelerating up ramps, etc, way better than the others. It was a real advantage!

Where I was getting hurt was on larger sweeping turns, and general 90 degree turns. With the Rhinos and such in 4 wheel drive, they were able to throttle through the turns. The Revolt still doesn't handle as well in the turns, especially sweepers. But we are working on that!
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post #3 of 9 (permalink) Old 10-05-2008, 10:48 PM
 
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Re: Whiplash Race Oct 4th

I thought about installing a single cutting brake like on my baja. If i can lock up the rear wheels going into a turn i might be able to get the tail end to slide a little. then accel out. Just a thought!
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post #4 of 9 (permalink) Old 10-06-2008, 07:05 PM
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Re: Whiplash Race Oct 4th

Just a few thoughts ... Has anyone looked at the front end alignment? Redline, what is the factory settings and could we crank in a little more or less Camber? I've talked with a friend of mine, that is a Auto/Truck front end specialist. His alignment heads will fit the 12" wheels. But we need to know a base line to start from.
A factory anti-swaybar would help, but would we loose any suspension travel?



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post #5 of 9 (permalink) Old 10-06-2008, 10:20 PM
 
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Re: Whiplash Race Oct 4th

Unfortunately cutting brakes are illegal in a number of racing events. So.....not an option for us racing. As for the use by someone not racing, it could be an option, but that would be hard to manage on large sweepers as you would have to lightly apply the inside tire while one hand holding the wheel while doing 45 around a turn! Not to mention that the inside tire which you want to brake actually has very little weight on it because the body has rolled and loaded the outside tire. At the same time weight is being transferred to the outside rear tire (which is leaning outwards) and unloads the front tires which is needed to help the turn.

As for front end alignment, I considered that at first. After looking it over closely, the alignment (camber, etc) looks good, especially while cornering. The A-arms stand the outside tire straight up when loaded (I have lowered my front shocks such that the rig is not fully extended at normal ride height). I also looked into the Ackerman angle, it looks good. Looking at photos and videos of the rig going around corners, what is happening is that the body rolls and due to the rear suspension design (on the Revolts) the outside tire leans outwards and looses traction..........basically sliding rather than planting as it should.

When out test driving the 2 seater Riot, I could tell RIGHT AWAY that it cornered a lot better than the Revolt. And I could SEE it as the Riot ran around the track with a Revolt in chase. The Riot was tighter on the turns while the Revolt tended to swing wide or slow to make the turn. This made sense as it has a totally different rear suspension design using trailing arms and no cross links in the back. Body roll was non-existent! This kept the rear tires planting as well as weight maintained on the front wheels helping to drive the turn.

I have already found in my Revolt that if I add camber to the rear tires by adjusting out the lowers and in the uppers slightly, I get better traction on turns (as I noticed this past weekend at the race). But still not enough to bring it back to where it needs to be.

I can't wait to try a sway bar.
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post #6 of 9 (permalink) Old 10-07-2008, 07:19 PM
 
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Re: Whiplash Race Oct 4th

I Think the main problem in turns is because of the positive trac gear box. no matter how sharp you turn the wheels the rear wheels want to keep pushing the front straight ahead. The inside rear wheel turns at the same rate as the outer.

Limited slip would be the only way to prevent this. One possibility would be to disconnect the front brakes. Approach the turns fast cut the wheel hard and brake hard so that the rear would begin to slide going into the turn. then accel hard coming out of the turn to keep the rear wheels from gaining to much traction and continue sliding sideways. A larger rear caliper and pads may be needed.

When I brake hard my front wheels always lock up and not the rear
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post #7 of 9 (permalink) Old 10-07-2008, 07:25 PM
 
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Re: Whiplash Race Oct 4th

Also adding weight to the front might help.
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post #8 of 9 (permalink) Old 10-07-2008, 08:22 PM
 
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Re: Whiplash Race Oct 4th

Quote:
Originally Posted by derwood View Post
Limited slip would be the only way to prevent this. One possibility would be to disconnect the front brakes.
When I brake hard my front wheels always lock up and not the rear
sounds like you need to get a brake bias valve, then you could put more brake to the rear so the front wont lock up.
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post #9 of 9 (permalink) Old 10-07-2008, 08:50 PM
 
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Re: Whiplash Race Oct 4th

I thought about that too. I think you are right!
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