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Author Topic:   mono leaf torque link
racerwilson
Dirt Freak

Total posts: 357
posted March 26, 2004 09:19 PM  
Has anyone tried a mono leaf to replace a torque arm?

dirtrace54
Dirt Maniac

Total posts: 192
posted April 14, 2004 01:22 PM  
I just have to wow, never thought of that. Would be interesting to see if it would work. Let me know what you find out

Ego Racing
Dirt Forum Champ
Total posts: 724
posted April 15, 2004 08:15 PM  
We ran a fiberglass half leaf as a torque arm/ Lift bar. It was real fast on asphault until we lost the spring in an accident. Just run a damper shock if you do it to keep the spring from bouncing. OH almost forgot we built a slider box for the front that gave it about 6 inches of movement for acceleration and braking.

Ego Racing
Dirt Forum Champ
Total posts: 724
posted April 15, 2004 08:17 PM  
One last thing we had to figure our... Find the chassis center of mass and put the slider/contact piont there.

racerwilson
Dirt Freak

Total posts: 357
posted April 16, 2004 07:18 PM  
ego how did you mount the damper to the leaf. Did you ever run it on dirt? Thanks for the great info.

juliaferrell
Dirt Freak

Total posts: 370
posted April 21, 2004 05:57 PM  
Very intuitive. I've done it and it works. Always wondered if anyone was ever thinking about that one. Make sure you run the natural curve with bow down. Even if you straighten it!!!!! Remember which way it was arched. Six inch slider box is ok. definitely on the balance point of the chassis.

NJantz
Dirt Forum Champ
Total posts: 755
posted April 21, 2004 08:01 PM  
you guys have any pics of this. I'm not quite understanding the slider box thing.
thanks

racerwilson
Dirt Freak

Total posts: 357
posted April 23, 2004 10:43 AM  
Please explain how you mounted the damper to the leaf. I too would like to see some pics of your set up.

Ego Racing
Dirt Forum Champ
Total posts: 724
posted May 05, 2004 06:52 PM  
I do not have any pictures of the original set up due to a fire in the shop. We did not run a damper on the leaf we ended up with a shock (I think it was a 7/5 valve shock) on top of the rear like the brake damper shock. The slider was to use the wrap up of the spring and not force the rearend in one direction or the other. The rear mount was solid to the rearend so we needed to make the slider to allow the spring to float on the mount. Think of the slider box like the rodend bearings on the 5th shock, it lets the arm move around without forcing a direction change.
We did run the setup on another car on dirt once I found another spring and is was fast and really hooked hard! It was very hard to get the car to turn on the throttle but when the track went dry slick you could still flat foot it out of the corner. The first time at the track we knew it was going to be different but with 56%rear and 150 lbs of bite on a tacky track it tried real hard to lift the front of the car off of the ground like a drag car. We ended up with about 4-5 inches of stagger to get it out of the corner. We put it under the car once last year on a practice day just to fool with people and ran 1 second faster than the track record and still cannot get it to turn good yet. Maybe we will do it again, if we do I will get pictures this time. It may need to be changed a bit due because we are running a T-N-T this year and we had it on a Rocket. I have also found an old shaw liftbar that is fiberglass double arm set up we are going to try.

[This message has been edited by Ego Racing (edited May 05, 2004).]

racerwilson
Dirt Freak

Total posts: 357
posted May 06, 2004 05:17 PM  
Hey Ego what did you use for a leaf spring and what rate was it. I don't have anyroom to mount a shock off the rear the seat gets in the way. What do you think

Ego Racing
Dirt Forum Champ
Total posts: 724
posted May 06, 2004 08:31 PM  
The half leaf was a shaw unit that was #300, I think it was a bight high but it worked. We ran the shock like the damper in top of the rear angled up to the front 5 degreese uphill so the seat shouldnt get in the way.

Ego Racing
Dirt Forum Champ
Total posts: 724
posted May 06, 2004 08:33 PM  
I was just thinking if you used a whole spring and mounted it to the rear in the middle of the spring and mounted the front and rear in a slider to allow it to move it could be a much lighter weight.

racerwilson
Dirt Freak

Total posts: 357
posted May 09, 2004 06:10 PM  
Ego,Looking fwd to see some pic soon. Keep me posted on how it is going.

juliaferrell
Dirt Freak

Total posts: 370
posted May 09, 2004 08:41 PM  
Mounting in front and rear will effect overall spring rates. You would have to be careful here with preload. You don't want any. Try a TRW composite off of a vette. Just use one side of it. Try moving the mounting side toward the right rear in half inch increments and leave the slider box mounted on the chassis centerline.

Ego Racing
Dirt Forum Champ
Total posts: 724
posted May 12, 2004 08:47 PM  
That is how we ran ours also.

berger
Dirt Roller

Total posts: 13
posted May 14, 2004 06:50 AM  
quote:
Originally posted by racerwilson:
Please explain how you mounted the damper to the leaf. I too would like to see some pics of your set up.


TRY GEORGE AT WWW.FLEX-A-FORM.COM
TELL HIM DALE FROM VA. SENT YA!

racerwilson
Dirt Freak

Total posts: 357
posted May 14, 2004 08:48 PM  
Thanks Berger I will give George a call and see what he can do for me.

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