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Old 12-15-2005, 02:55 AM   #13561
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I run the BMI 3mm upper and lower chassis on a med. bit carpet track. I notice that most pro driver setups call for the 2.5 mm upper deck. My car is somewhat a handfull to drive and its not got the corner speed I need. (.5 of sec. slower) If I go to the 2.5mm upper deck will it make the car drive more foregiving? Also will the thinner upper d. increase my lap time or could it help me?

Thanks
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Old 12-15-2005, 06:04 AM   #13562
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I keep breaking driveshafts with a spool, always around the pin area at the joint.

Are there any stronger driveshafts that can be used from other cars that won't break as often? Like TC3/4 ones, Mi2 ones etc.
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Old 12-15-2005, 06:28 AM   #13563
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Quote:
Originally Posted by kyracer
I run the BMI 3mm upper and lower chassis on a med. bit carpet track. I notice that most pro driver setups call for the 2.5 mm upper deck. My car is somewhat a handfull to drive and its not got the corner speed I need. (.5 of sec. slower) If I go to the 2.5mm upper deck will it make the car drive more foregiving? Also will the thinner upper d. increase my lap time or could it help me?

Thanks
Post your setup. I have found this car to have a bunch of corner speed and is very forgiving.
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Old 12-15-2005, 11:57 AM   #13564
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I am using the Andy Moore setup found on the Hpi setup.

http://www.hpiracing.com/graphics/se...land%20rev.pdf

I made a few small changes to keep the rearend stabble going into the corner.

I am running stock and the track is small with med. traction.
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Old 12-15-2005, 02:24 PM   #13565
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Quote:
Originally Posted by kyracer
I am using the Andy Moore setup found on the Hpi setup.

http://www.hpiracing.com/graphics/se...land%20rev.pdf

I made a few small changes to keep the rearend stabble going into the corner.

I am running stock and the track is small with med. traction.
I see a few reasons why you say your car is hard to handle. Some of your settings I would not run on carpet. When I get home tonight I will look at my Pro 4 and let you know what I have. It is very easy to drive. And has corner speed.
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Old 12-15-2005, 02:27 PM   #13566
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Are you guys running on foams or rubbers?

Because I have a bit of a handling prob with my Pro 4 and I was looking for some help.

Regards
Paul
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Old 12-15-2005, 02:29 PM   #13567
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I am running on foam carpet.
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Old 12-15-2005, 10:44 PM   #13568
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Anyone have any tips for building the diffs? More specifically the screw to hold them together. The 2/56 x 1" has snapped on me. One HPI one and two Associated ones. All of those in the rear and now one HPI one in the front. It's just starting to get me really annoyed.

The obvious solution is to not hit things but that's just not going to happen anytime soon. The worst thng is that the front one broke in the middle of the straight. It obviously had bee weakened before but that's gotta be a hard place to break.
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Old 12-16-2005, 01:19 AM   #13569
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Thanks Dodgeguy for your help.
I dont have alot of knowledge about onroad racing, mostly do offroad.
By the way just in case I am running the foams that the setup required.

Feel free to email me a setup if it would make it easier on you

hyperbola28@rock.com
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Old 12-16-2005, 01:42 AM   #13570
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OK, Here's my problem with my car. I run in the 19t class and I race on carpet using Take Off CS22's (the control tyre) and they grip really well, for the first 2 minutes. From then on the amount of oversteer I get gets worse and worse. I use Jack the Gripper addative but do also have LRP Top Traction Carpet I could use.

The set up I run is:

Ride Height :5.5mm F and R
Shock Oil: 50wt Front, 40wt Rear
Springs: Yellow Front, Silver Rear
Transmission: Ball Diffs front and rear
Droop: 6mm Front, 4mm Rear Right, 3mm Rear Left
Rear Toe-In: 3 degrees
Front Toe-Out: 0.5 degrees
Front Caster: 2 degrees
Shock Location: Rear Wishbones - Middle hole
Front Wishbones - Outer hole
Front Shock Tower - 2nd hole from inside
Rear Shock Tower - 3rd hole from inside

Is there anyone out there who could help me?

Regards
Paul
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Old 12-16-2005, 02:13 AM   #13571
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Im no pro but why do you run different droop on the Left to Right rear. You want the droop to be the same from left to right. Also it seems like you are running way to much doop all around.

What is the yellow spring and silver. I dont really know which color is best but what I have read most run a 25lb in rear and 30lb in front springs.
I am using the AE brands which is a purple (30) and copper (25). Who knows maybe Im wrong with the choice of springs.
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Old 12-16-2005, 05:20 AM   #13572
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Quote:
Originally Posted by pwracing
OK, Here's my problem with my car. I run in the 19t class and I race on carpet using Take Off CS22's (the control tyre) and they grip really well, for the first 2 minutes. From then on the amount of oversteer I get gets worse and worse. I use Jack the Gripper addative but do also have LRP Top Traction Carpet I could use.
Hey Paul.

I run at S&N Trackside where we have a control tire of CS27's. I run a Pro 4 in the stock class. Your setup looks close, but if after two min your pushing there are a couple thing to look at.

Rear Droop - I donít really think you need the 2 droop settings, it only 19 turn. But you still have to much, go to number 5. With 3 & 4 there can be a lot of weight transfer to the rear tires, not letting the front tires guide the car.

Jack Da Gripper! - At trackside JDG is the only sauce. How are you tracking your tires up front? Half? or all? How long are you letting it sit before the race? Let it sit for the race before, bout 5-6 min. If the tires are warn out, once the JDG wares off, you will slide. see tires comment. Is there scale or build up on the tires? If there is clean it off with motor spray.

Tires - Why did your group decide on CS22? They are softer than the CS27/diff heat range. They provide mad traction but then fall off. So your tires might be dead. Or at the 2 min mark, they might exceed there heat range.

Hope that helps.
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Old 12-16-2005, 06:15 AM   #13573
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Thanks guys,

The reason I have using different droop settings on the rear is because it is supposed to get rid of torque steer. But I shall go to 5mm for the next round just to see what happens.

The springs are 17Ibs (silver) and 22Ibs (Yellow)

And with respect to tyres here in the UK a lot of clubs have the control tyre as cs22's. If use cs27's I will get disqualified. Tho it seems everyone else is doing absolutely fine with their tyres. Also my tyres are brand new so they are nowhere near worn.

Paul
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Old 12-16-2005, 11:42 AM   #13574
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Try 6 on the right and 5 on the left
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Old 12-16-2005, 12:17 PM   #13575
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what is the purpose of running different droop on left and right rear??
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