Part 6 in our series of tutorial videos that explain how to set up your rear suspension takes a look at 4-link basics, set up and adjustments. The choices made here will determine the length and height of the instant center. I know the dragster guys are a little thin here, but I thought I would run it past you anyhow. 25% More at 50% Completion. Your typical 7.50 dragster needs a good 500 pounds on the nose or you are likely to have this issue, especially when the air and track are good! Product Code: DRAGSTER. You may be up against a car that has a top speed 20 mph higher than yours, but if it takes an extra 4-5 seconds to get there you will probably win. I have noticed others with similar setups with the same problem. When you think about your 4 link you should think about its reaction to the CG forget about the front wheel position or if its got front suspension etc. The popularity of the 4-link suspension is due primarily to its ability to let the race car turn freely in the middle of the corner without compromising forward bite. Theory & Help Instructions - I was asked to make this post here, by one of the Moderators. On my 4-link on our dragster. Good luck! A stock suspension car that uses 4 trailing arms is a true 4-link and can be treated, plotted, etc, as a true 4-link car so the savy racer looking for an edge can benifit from this information.
Part#40-118FK. The 4 link alt was built by S&W for fast brakets. A drag car just needs to get from 0 to top speed as quick as possible. I hope that my link works for viewing my data. Thats all there is too it. The 4-link is a relatively complex rear suspension that is very sensitive to adjustments. If you want to check your 4 link setup, go to a chassis shop or find someone with portable race scales.

These are standard big block springs that come with the TCI Mustang II type front end. Hot … Computer Program to Simulate and Analyze Rear Suspension 4-Link Setups for Instant Center, Pinion Angle and Driveshaft Angle Change, Anti-Squat %, and More for Drag Racing Sort By. Now if you running 1/4 mile top dragster or super comp ive heard that swing arm is the way to go

Our backend design is race proven, and extremely strong for any horsepower! 25 Item(s) Page: 1 of 1 . Qty: Description Introducing our redesigned 4-link dragsters! Be sure to check out the other videos on Alignment, Pinion Angle, Pre-Load, Anti-Roll Bar and Ride Height if you haven’t already. Note the two pairs of links, the coil-over shocks and their mounts, and the Panhard bar in the rear. In a Dragster the front wheel weight is low but its a long way forward of the CG so it has a high torque value at the CG. #10 Post by John_Heard » Tue Dec 22, 2009 8:27 pm I think your take on what the IC's do and how they react is correct - the problem I see is you really don't know what is going on right now in regards to how the current settings are affecting the car - shooting in the dark so to speak. Alot of tuning can be done this way. 416" Iron Eagle small block , 4.57 gear 14.5 x 33 Hoosier 8-1/4 pounds 7.70's @ 170 off the stop but we mostly Super Comp race 8.90 @ 168 on the stop 1720 # with my 190 # driver on board we're 44" out and 10" up We went 6.20 with this set up. It will take some serious customization to do better. The 4-Link Difference . The PM had a 4 link as per the rules but we ran 100 lbs springs on it with 10-90 set up on the shocks and 1 1/2 " of travel. Then you will be able to tell if each side is preloaded the same. The car woud set down on the stops as soon as you loaded the clutch. View as: Grid List. Our 4-link designs have been proving themselves for over 20 years now, and continue to do so today. I'm not sure how to cure this. Have them put the car on the scales weigh the car with the 4 link disconnected.

I have since added quit a bit more to it. Links are direct threaded 3/4-16 left hand on one end 3/4-16 right hand on the other and feature oversize hex nuts for quick, easy adjustments.
All After Market Parts to be Prepaid The 4 link just reacts to the inertia of the CG. It runs low 8's in the quarter. Then connect the 4 link, preload it and weigh again. Re: experiences 4link setup slippery tracks? Included in our backhalf package: ~ Made with a bulkhead in front of the 4-link bar for simple installation on most any dragster ~ welded backhalf tubing

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