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Author Topic:   J-bar,,, straight bar???????
Fastride 38
Dirt Maniac

Total posts: 125
posted August 10, 2005 10:50 AM  
Lets start with some back ground info. I was running a short straight bar off the left side in front next to the pinion. Then, I went to a j-bar off the right side. Which didn't work, the car wouldn't come off the corner. So my question here is...If I mount a long straight bar off the right side of the pinion will it be the same as running the j-bar? Or because it's straight it will be more like when I ran a short straight off the left of the pinion just slightly less erractic? Thanks in advance for any help.

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Kromulous
Dirt Forum Champ
Total posts: 796
posted August 10, 2005 11:01 AM  
Where did both bars mount on the chassis, the left (driver's) side?

I dont follow you real well on your post, but i think i get the jest of it. The bar shape dont matter, even if has loops in it. All the matters is the connecting points.

Being longer, further distance between the 2 connecting points, would make it smoother, or should barring any kind of xtreme angle i would guess.

Fastride 38
Dirt Maniac

Total posts: 125
posted August 10, 2005 12:34 PM  
Sorry, that's what I get for assuming. Yes, it was mounted to the left side of the chassis, both straight and j-bar where at the same angle and mounted to the same place on the chassis. The only thing that had changed was the length of the jar bar was longer and the mounting point on the rear from the left side of the pinion plate to the right side of the pinon plate. So, there was a big change just putting the j-bar on...there won't be a big change mounting a longer straight bar in the excate place the j-bar is now?

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J 46
Dirt Full Roller

Total posts: 28
posted August 10, 2005 12:39 PM  
How short was the panhard bar , the shorter the bar the more arractic it will be . The one we use is all on the left , The tube i think is 16 inches long and works great .


J 46

Fastride 38
Dirt Maniac

Total posts: 125
posted August 10, 2005 12:51 PM  
Well, is was 11in center to center. Now I ve decided to run IMCA with their 19in rule. This car is a prototype so if all else fails I can redesign it. I was just curious if running a straight bar 19in long would change anything from a j-bar 19in long mounted in the same place at the same angle.

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Kromulous
Dirt Forum Champ
Total posts: 796
posted August 10, 2005 01:42 PM  
Well, no it shouldnt. But when you went from the 11" striaght to the J-bar, the angle decreased. Moving it laterally, further away, away from the frame mounting point will decrease the angle.

So with the J-bar on, you would need to lower the pinion end, and raise the frame end to get the same angle. You probaly lost all your left side lift when you made the change, and the car wasnt rolling as much i would assume, not actually rolling over, but more mechanical lift on the left side via the angle of the panhard bar.

How are you going to mounting a straight 19" bar to the right side of the pinion plate? Up under the Yoke? make sure it doesnt hit when it indexes the reare end housing, on deceleration.

Have you looked at the new AFCO mount that has the hole right up under the yoke? its right in the middle. It might make things easier for ya.


Fastride 38
Dirt Maniac

Total posts: 125
posted August 10, 2005 02:08 PM  
I tried to get one of those pinion plates from Day Motorsports but they said they didn't have one. I didn't know who made them but I've seen a few on Shaw cars. Now, I know Afco makes them that's the answer to my problem for clearance. Thanks for the help and info.

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washeduptoo
Dirt Maniac

Total posts: 155
posted August 10, 2005 03:31 PM  
Afco makes a flange that works and has holes all around the flange and has one directly under center of the pinion. It costs around 50 dollars. If you need a number PM me. Later

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