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[Roudy73]

Rf 275 black penske bunp with one spring runber, Rr 225 with two spring rubbers, Lr 100 16 inch spring. It is a B/G rocket. No stacks can just run single springs. Grt74 is probably right about being to tight in. I have just never found a adjustment that has made the car comfortable getting in. When I get it free enough then it feels like the car is in top of the track.

[grt74]

Rf 275 black penske bunp with one spring runber, Rr 225 with two spring rubbers, Lr 100 16 inch spring. It is a B/G rocket. No stacks can just run single springs. Grt74 is probably right about being to tight in. I have just never found a adjustment that has made the car comfortable getting in. When I get it free enough then it feels like the car is in top of the track.

spring rubbers come to mind (could take them out, with that said go up to 250 on rr but no rubbers) 250 will be less load with out the rubbers
sometimes soft left rear springs are not always the answer, try 150-175 but you will have to learn not to let the car slam, but will be free in, more drive off, you would be surprised how many have gotten off the soft deal
soft springs for the top teams are so they can beat the body rules
bars
could go up on lr bottom
could lengthen rr bars 1/4 inch (leave car the same way you have it,tractioned up)
rr bottom level at ride height (slick)
I'm guessing your close and looking for just a little

[CCHIEF]

Are you setting load or just put bump and rubber in RF/RR and run? Spring rates WITH rubbers don't mean much, so many different coil spacing and rubbers out there. BTW, you hijacked this guys post

[Roudy73]

I had a guy set them in a smasher. They are the blue rubbers like rocket recommends. Sorry for hijacking his post.

[Roudy73]

Grt74, how do you get around the body rules if you run a stiffer spring in the lr?

[Roudy73]

If your driver comes in an tells you it is to tight, like stuck on the rr. Would you loosen entry or loosen the car on the gas?

[Jking24]

If your driver comes in an tells you it is to tight, like stuck on the rr. Would you loosen entry or loosen the car on the gas?

Fix entry to center and the exit generally fixes itself

[grt74]

Grt74, how do you get around the body rules if you run a stiffer spring in the lr?

i have argued till I'm blue in the face about this one with the drop rule (they are dip chits on this one)
if you are going to jack it up and check it, with a total height measurement, why should it matter at ride height????? sure it gives the bars more angle to be gained and some will drag the frame rail going threw the pits but if you know what your doing with springs you can gain the same or better results cheaper (don't need all the crazy valving)

125-175 spring you should be ok, it will free the car up going in OFF THE GAS, then you have the added bar angle to be gain when you pick the gas back up (its not preloaded threw the roof) but you'll have to have the rf correct too so it will work
some will laugh at this and say it will never work, if there were not ride height rules, just a total height rule when jacked up, i would tell you to put a 300 on it, start at ride height and jack rounds in till comfortable

[08racing]

I started this year with a digressive stack, 55lb rate at ride height. I could not get the car to rotate on entry (off gas, I may not be the best driver...). This week a threw my 170lb barrel spring on and it was a night and day difference. Car rotated on entry so much better and I could get on the throttle much earlier. Now this track does no tech beyond weight, my deck was probably 41” at ride height. I’m going to dial it in a bit to be legal at other tracks. What did I learn? I need some LR spring to make the car turn.

[Jking24]

What were your loads with the stack vs single spring. I 55 is to soft