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Author Topic:   JetMod Swingarm Car Help!!!!
Dirt-Tracker
Dirt Maniac

Total posts: 182
posted July 05, 2004 08:43 PM  
I have a Swingarm car that I run and lets say hypothetically speaking I want to 3 wheel it around the track....what do I need to change?

LR--225
RR 200
RF 800
LF 700

Set chassis side of panhard bar at 5" up and set angle at 5-6 degrees.

weights:
Lf 499 RF 554
LR 806 RR 626

Cross 1360 54.7%
Left 1405 52.5
rear 1432 57.6

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"Somedays your the dog, and somedays your the fire hydrant!!!"

www.geocities.com/albertson28racing

dre383
Dirt Roller

Total posts: 12
posted July 05, 2004 10:34 PM  
we run a jet viper swing arm on both sides we left our right side swing arm long and we made our left side a short swing arm and we took the rear trailing arm and put it at a 20 degree angle down added to the existing braket woorked real well then we were 3 wheling around the track then we had to stiffen the front to a 900 and a 1000 and it worked real well want to know more let me know hoped this helped

Wheels47
Dirt Maniac

Total posts: 170
posted July 06, 2004 04:25 PM  
How do you put the left short arm on. Wont that make my left side wheelbase a lot shorter?

Will this setup help getting into corner? It seems that right now it takes forever for it to set into the corner. Looks like the 4 bar cars are getting into the corners alot better and being able to get into throttle faster. We run on tight cornered tracks and I need to be able to get in faster and turn tighter.

thanks for all your help

Dirt-Tracker-------on dads computer!!

zeroracing
Dirt Forum Champ
Total posts: 1875
posted July 06, 2004 05:05 PM  
i would do like this
1)stiffer lr spring like a 275 tighten up exit. more drive on exit.
2)about 15-20 deg neg angle in the rearward bar, so that it is downhill to back of car.
3) short panhard bar.
that will work fine for your track. 3 wheeling is not a must, more like a side effect.
to get more bite out of a swing arm you should keep it level. that way it wont loose lr thrust.
but if you want to 3 wheel those should help you do that.
good luck, stick to the low side most the time on winston also.
good luck

Dirt-Tracker
Dirt Maniac

Total posts: 182
posted July 06, 2004 08:47 PM  
I measured the swingarms and both sides have a 19" swingarm (measured from tip to tip around the curve)
The left side arm is in the top hole on hte chassis mount(front side) and the trailing arm is in the middle hole on back side of car. So you guys are saying to drop the trailing arm at least to the bottom hole and maybe even add an extension to drop it even more? Is this called adding oversteer? If im picturing it right its gonna let my LR **** up under me more, is this correct? Im sorry for all the questions.....im trying to learn. I got spoiled in running BMod....found a simple setup that worked and never changed it, now as I have moved to AMod this technque isnt working

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"Somedays your the dog, and somedays your the fire hydrant!!!"

www.geocities.com/albertson28racing

Wheels47
Dirt Maniac

Total posts: 170
posted July 07, 2004 03:20 PM  
ttt

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