Ladder bars

[Jyrki]

I am in the process of getting my '65 street beetle back together after a break. During the break the car was converted to 32" Ladder bars + Strange coil-overs. To get the car rolling I put the ladder bars in the middle position (out of the 7 possible link holes) =>
- Instant Center (IC) is now 10.5" from ground.
- With a 26" tire the axles are 13" from ground.
- I have not measured the Center of Gravity (CG) of my car, so I cannot tell what the Percentage of Rise (PR) is. CG should be close to any lowered street beetle (transmission is raised 2½", front is lowered 4", weight distribution front vs. rear is close to any standard beetle).
- Springs are 800lbs - please note that the rear is narrowed pretty much and therefore the coil-overs are leveraged. I also have an option to replace the springs with 750 or 850lbs if needed.
- Anything else I should mention? Car weights a bit over 2000lbs, ran 9.80/140mph with torsion bars (poor 1.5sec 60 ft)...

What I am looking for is baseline for IC to get started.

THANKS,
Jyrki

[PPRMicke]

I am in the process of getting my '65 street beetle back together after a break. During the break the car was converted to 32" Ladder bars + Strange coil-overs. To get the car rolling I put the ladder bars in the middle position (out of the 7 possible link holes) =>
- Instant Center (IC) is now 10.5" from ground.
- With a 26" tire the axles are 13" from ground.
- I have not measured the Center of Gravity (CG) of my car, so I cannot tell what the Percentage of Rise (PR) is. CG should be close to any lowered street beetle (transmission is raised 2½", front is lowered 4", weight distribution front vs. rear is close to any standard beetle).
- Springs are 800lbs - please note that the rear is narrowed pretty much and therefore the coil-overs are leveraged. I also have an option to replace the springs with 750 or 850lbs if needed.
- Anything else I should mention? Car weights a bit over 2000lbs, ran 9.80/140mph with torsion bars (poor 1.5sec 60 ft)...

What I am looking for is baseline for IC to get started.

THANKS,
Jyrki

Hi Jyrki
I think 800lbs (362.8kg) is too hard on the car weighs 2000lbs (907kg) I am living in prostock / promod racing think you can use much softer rear springs
(a prostock  us about 150kg springs back as the starting setupp car's weight is 1066kg weight distribution is 50/50)

How much considering the car's rear wheels pc

//// PPR Micke

[Josef]

Hi Jyrki
Do you have any pics of the ladder bar/coil over mounting?

/Josef