Chasing an Issue on the LR/RF

[missile07]

How low would be too low? General static starting points?

[missile07]

It should be the same as before at our static ride height. No bars have been changed.

[MasterSbilt_Racer]

It should be the same as before at our static ride height. No bars have been changed.

All this talk about stop nuts and no stop nuts make me think something is different. With that low ride load, I think this thing would sag until you bottom a shock or something.

Min bar angle gonna depends on a lot of variables. I'm not as extreme as you on soft spring rate and have more ride load. I still have to sit on a bumpstop to get consistent static ride height.

[missile07]

The shock builder and chassis builder suggested that we try a locknut with that specific shock and spring combo. Originally we didn't have it on before we had any issues. After the shock got bent and we started having issues we decided to try it. So we have tried it with and without the lock out nut. Reset the static ride heights both ways as well.

We swapped j-bar and driveshaft last night. Re-smashed all the shocks. The only suspension pieces we have not changed currently is the LF upper, lower and spindle. We have all the stuff to do it and plan on trying Saturday.

Looking at the static ride height while sitting on the ground. With a bent 15 inch LR lower bar there is only an inch of height difference between where the bar is mounted on the birdcage and where the bar is mounted on the frame. These are both our standard holes and we do not and have not changed them.

I cant get the pic to upload but when we have it currently at ride height there is roughly 1.75 to 2 inches of shock shaft showing on the LR.

[MasterSbilt_Racer]

The shock builder and chassis builder suggested that we try a locknut with that specific shock and spring combo. Originally we didn't have it on before we had any issues. After the shock got bent and we started having issues we decided to try it. So we have tried it with and without the lock out nut. Reset the static ride heights both ways as well.

We swapped j-bar and driveshaft last night. Re-smashed all the shocks. The only suspension pieces we have not changed currently is the LF upper, lower and spindle. We have all the stuff to do it and plan on trying Saturday.

Looking at the static ride height while sitting on the ground. With a bent 15 inch LR lower bar there is only an inch of height difference between where the bar is mounted on the birdcage and where the bar is mounted on the frame. These are both our standard holes and we do not and have not changed them.

I cant get the pic to upload but when we have it currently at ride height there is roughly 1.75 to 2 inches of shock shaft showing on the LR.

My car can lose 1" of shock shaft from the driver leaning over in the seat.

[missile07]

With the driver in the car it will go down .5" consistently. I questioned it when we got the car but the chassis builder says its right. Another local with the same chassis does the same.

[Len72P]

I agree with Master , If you are smashing 420 @ 20 inch , which is probably static ride height , you had to be on a Bump stop or the car would drop another 3 inch based on 60 lb. per inch load. If you sent your bent spring assy. for repair , the bump stop could have easily been misplaced. With chassis LR extra down travel , the trust angle is ugly. On a bad fast heavy track might be OK. but on a slower slick track ?? .

[CCHIEF]

Gotta wonder if you bent the shock shaft how a lateral load got applied to it ?? Was the rod bushing replaced also?? Check shock for excessive lateral movement! What else was involved in being able to apply that lateral loading?? Top out or bottom out? Look for binds in heims...on the shock?? Start moving parts with car on ground weight load on moving parts. HTH

[Jking24]

I'm a little confused about the lock out and no luck out situation aswell. Their had to be a bump stop or somthing else to maintain ride hieght on such a soft setup with no collar. Was this a coil bind setup. It's very possible the springs got damaged when the shock got bent. And are no longer functioning correctly through travel. Back to your original statement if static ride hieght is now different. Somthing on the car is not what it previously was

[billetbirdcage]

Did you happen to check the LRL bar since you got hit in the LR? Assuming you have a pre-bent one on the car, so check and make sure the bar didn't shorten a bunch (IE supposed to be 15" and now 14")

Also check the J-bar and make sure it didn't shorten as well

[grt74]

I'm a little confused about the lock out and no luck out situation aswell. Their had to be a bump stop or somthing else to maintain ride hieght on such a soft setup with no collar. Was this a coil bind setup. It's very possible the springs got damaged when the shock got bent. And are no longer functioning correctly through travel. Back to your original statement if static ride hieght is now different. Somthing on the car is not what it previously was

I'm going to go with this one, springs got damaged, or something with the shock is goofy, if all is the same and you put a different shock on, then the new shock fixes it, its somewhere right there, now i did have this one happen to me before on the lr, car was crazy fast, got hit in lr, broke the snout on the axle tube, took 2 races to figure it out, now i check the snouts on any bump of said rear end, and yes before i get beat with a whip, it all checked out in the shop

[grt74]

take it to where you bought it, pay them to fix it and tell you what it was, if thats what it takes

[Jking24]

I'm going to go with this one, springs got damaged, or something with the shock is goofy, if all is the same and you put a different shock on, then the new shock fixes it, its somewhere right there, now i did have this one happen to me before on the lr, car was crazy fast, got hit in lr, broke the snout on the axle tube, took 2 races to figure it out, now i check the snouts on any bump of said rear end, and yes before i get beat with a whip, it all checked out in the shop

Usually when this happens the brake pedal goes soft or gets inconsistent at some point

[missile07]

Just to follow up...

We have installed a new transmission and yoke but we haven't been able to test it due to a recent snow storm. I have also ordered all new swift springs for the triple stack. (After several messages about the possibility of a bad spring).

On that is there anyway to test a spring to see if it has gone bad?

[grt74]

Just to follow up...

We have installed a new transmission and yoke but we haven't been able to test it due to a recent snow storm. I have also ordered all new swift springs for the triple stack. (After several messages about the possibility of a bad spring).

On that is there anyway to test a spring to see if it has gone bad?

soft springs can collapse, but as bad as you are saying it is i would think you would see it, you can check in a smasher
but they say if it looses more than 2% you should change the spring, but what your taking about sounds extreme to me