Drag Racing Discussions > Front Engine Dragsters

What is the perfect Front to Back weight ratio?

(1/3) > >>

jspell:
I'm sure every car is different, but are there ratio boundaries? i.e. 80/20%

GlennLever:

--- Quote from: jspell on September 18, 2014, 04:30:25 AM ---I'm sure every car is different, but are there ratio boundaries? i.e. 80/20%

--- End quote ---

There is some discussion on this topic here

http://www.frontenginedragsters.org/forum/index.php?topic=1206.0

George:
We changed our engine combination from an injected stock block to a blown Dart Little M that is fully filled. I weighted it with electronic scales on all four corners. Here's what I found the weights to be: LF 186 RF 198 LR 571 RR 582. Our car is 223" with the SBC 41" out. I run a 40# battery in the nose and 2-10# fire bottles as far forward as the cables would allow. The 3+ gallon fuel tank is about 4' from the front axle. These weights are with the car race ready less the driver and his equipment. Total weight would be around 1700# with the driver.

The car runs very well about 50% of time ,the other 50% it is smoking the tires as soon as it hits the wheelie bar. I am going to add about 30# out front and try to get it to come up on the bar with a lighter hit . It seems like a lot of weight but tried lowering the bar and raising tire pressure with no luck. My other options include a different bar design with a spring loaded bar as one option.

I am sure moving the engine out would also help but I would rather sell this car before I go to that much work. George

dreracecar:
How many racers do you know that own scales, most rely on the "needs more weight on the front " theory

George:
I know of one who owns scales. He uses them to help setup his 4 link cars. A good friend and 10 minutes away.

Navigation

[0] Message Index

[#] Next page