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Author Topic:   5th Arm
dusty
Dirt Newbie

Total posts: 4
posted August 31, 2000 12:30 AM  
we run on a 1/2mile high banked clay track, we can't seem to get the car to come off the corners. We are currently running a 350lb spring in the arm and getting 3-4" of travel, I was wondering what everyone else is running or trying, we run the spring behind on the left and about 57% rear 52%cr with 100lbs rear split-- any ideas greatly appreciated

racer2b
Dirt Roller

Total posts: 10
posted August 31, 2000 03:34 PM  
How far out is your 5th mounted? Shortening will give bite off the corner. Also sounds like you've got plenty of travel and might consider stiffening the spring as well. What chassis?

dusty
Dirt Newbie

Total posts: 4
posted August 31, 2000 09:59 PM  
quote:
Originally posted by racer2b:
How far out is your 5th mounted? Shortening will give bite off the corner. Also sounds like you've got plenty of travel and might consider stiffening the spring as well. What chassis?

Chassis is a mastersbilt 4bar arm is usally run in the 36-38" range,we don't have much adjusatment there- what spring do you run


racer2b
Dirt Roller

Total posts: 10
posted September 01, 2000 10:49 AM  
We run a MasterS '98 4bar with the shock in front on a stop and go 3/8ths. We too had forward bite problems until we stiffened the spring to a 500# and put an easy-out shock on the right front. We weren't able to shorten the 5th arm but that's the plan for next year. It is currently at 36" but we're hoping to get that down to 30" or 32". Your rear % sounds a little heavy. What are the rest of the setup percentages, springs, shocks, etc.? Is this updated with the spindles and control arms or is it the 2000 car?

dusty
Dirt Newbie

Total posts: 4
posted September 02, 2000 09:16 AM  
quote:
Originally posted by racer2b:
We run a MasterS '98 4bar with the shock in front on a stop and go 3/8ths. We too had forward bite problems until we stiffened the spring to a 500# and put an easy-out shock on the right front. We weren't able to shorten the 5th arm but that's the plan for next year. It is currently at 36" but we're hoping to get that down to 30" or 32". Your rear % sounds a little heavy. What are the rest of the setup percentages, springs, shocks, etc.? Is this updated with the spindles and control arms or is it the 2000 car?

We are currently running 225 with 94's in the rear and 500 and a 550rf up front with a easy out onthe right too,we are running an older car,only update is the left rear mount. MAsters wants you too legthen out the right side when you run the shock behind but we haven't-- we almost always nearly bottom the right side shocks out. also run about 15 degs of rake in the panhard bar. We are currently thinking of getting a narrow car just because thats what everyone else is running now

kevpow
Dirt Maniac

Total posts: 172
posted September 03, 2000 04:13 PM  
i've also had forward bite problems on a 4link car.i had a 90/10 shock on 5th coil and a 350 spring. changed shock to a 73 and changed spring to a medium progressive. it works awesome on a dry slick!

tom
Dirt Roller

Total posts: 5
posted September 03, 2000 11:53 PM  
quote:
Originally posted by dusty:
We are currently running 225 with 94's in the rear and 500 and a 550rf up front with a easy out onthe right too,we are running an older car,only update is the left rear mount. MAsters wants you too legthen out the right side when you run the shock behind but we haven't-- we almost always nearly bottom the right side shocks out. also run about 15 degs of rake in the panhard bar. We are currently thinking of getting a narrow car just because thats what everyone else is running now

If this will help you any, I have the same problem. I have a 94 Rocket that I've tried to run left rear behind on. Rocket told me that you can't run left rear behind because of front end geometry, but I didn't believe them. We tried the car that 6-8 races when we first got it, and could not get that car to go around fast enough. Do what you want, but when we went left rear forward locked up 36" 5th 450 or 500 good bite 110 left rear, we ran better. With 200 left rear 225 right rear, (on low banked track) if you don't want to lock it up because it'll lift the front wheel, try 250 left 200 right and HANG ON! Hope this helps.


dusty
Dirt Newbie

Total posts: 4
posted September 05, 2000 07:07 PM  
quote:
Originally posted by tom:
[QUOTE]Originally posted by dusty:
[b] We are currently running 225 with 94's in the rear and 500 and a 550rf up front with a easy out onthe right too,we are running an older car,only update is the left rear mount. MAsters wants you too legthen out the right side when you run the shock behind but we haven't-- we almost always nearly bottom the right side shocks out. also run about 15 degs of rake in the panhard bar. We are currently thinking of getting a narrow car just because thats what everyone else is running now


If this will help you any, I have the same problem. I have a 94 Rocket that I've tried to run left rear behind on. Rocket told me that you can't run left rear behind because of front end geometry, but I didn't believe them. We tried the car that 6-8 races when we first got it, and could not get that car to go around fast enough. Do what you want, but when we went left rear forward locked up 36" 5th 450 or 500 good bite 110 left rear, we ran better. With 200 left rear 225 right rear, (on low banked track) if you don't want to lock it up because it'll lift the front wheel, try 250 left 200 right and HANG ON! Hope this helps.

[/B][/QUOTE]
When you say lock up do you mean lock the bird cage?


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