Finally, the front end video has come together! I have included a downloadable chart to help provide some high level guidelines on this topic. The Suspension Tuning series has a bunch of content that walks through many chassis configurations and now we have the front end to rear cover in the series. Checkout the series at ru-vid.com/group/PLK2JQ7QIgx_JRQMKBZMkx_tu0W4MDUxZQ and walk through the videos that most apply to your setup. Please hit the Thumbs up button and leave some comments. I apologize about the noise from next door as the weather was so perfect for the kids to be out playing! Go fast! Go straight! Be SAFE!
Saw this on QA1's website regarding springs and it sums up what you are saying I believe. "Springs play a huge role in how your car behaves during launch. Going to a softer spring rate gives your springs more stored energy, which means they'll have more force during launch, lifting the front end to transfer weight more quickly to the rear. On a drag car, you generally want your front springs compressed 30-35% when the car is at ride height." It is how I set my drag truck up, and I followed Vikings chart for c & r on my crusader shocks. Now, I am watching your videos to fine tune how my truck launches to improve my 60ft.
That was a first class video, I am glad that you are a local resource for me. I hope to run across you at a track soon, you are one of the few who truly knows what your talking about and your giving it away for free.
Thank you for all these videos I was completely clueless on how to make it all work. Every one I watch I feel I get closer to being able to actually set one of these cars up
Whoop there it is. A light bulb just turned on above my head. Excellent video demonstrating the relationship between the settings and race surfaces. The accompanying videos in slo mo are an eye opener. Great job, keep it up. Best I’ve seen.
This video was awesome and exactly how my car is setup in the front for no prep hope you do a rear shocks next ! That’s where I’m having a little trouble
Trap House Racing thanks so much for your comments! Sorry for the delay on the no prep rear setup... it will not be much longer. Go fast, go straight! Be Safe!!
Pete Kochanny thanks so much for your comments and question! Sorry that part was not clear. At a high level, I want enough shock travel to compliment the amount of travel I need for the track conditions. I also want to make sure I have some compression left to control the front end on the way down if it pulls the front wheels. Also, the front end geometry will dictate some of this. In other words, a strut type front vs an A-Arm type suspension. A long ways to say, it depends, but I don't like going less than 2" of compression for a car that pulls the front wheels. I try to give it all the extension travel I can get. Hope this helps. Go fast, go straight! Be Safe!!
Can you help us with the rear shock row in the chart. You may have a typo. It looks like you are saying set to less compression damping resistance in both the no prep and radial prep. I'm thinking for the radial prep it needs stiffer compression (more damping). You have great suspension videos and this is the education I need to start to dial mine in. Really appreciate ya.
TMc. thanks so much for your comments and question on the chart! Those are very high level guidelines and each car may need some tweaking for that specific car. With a slick on a radial prep track, often times the track is dead hooking the slick so hard, you may need to soften the compression to allow the shock to let the slick not wad up too badly. If compression is too tight, the shock can hold the slick to the track too hard which usually will lead to severe tire shake. Hope this helps, but, each car will need some adjustments beyond this chart for sure. Go fast, go straight! Be Safe!!
I have no shock travel at on my front end it snacth the car back down immediately when I Jack front end up no travel at all coil shocks and springs on front
Hey Kevin in your video at the track when you made the full runs you had the wheelie bars set @ 7"L. and 6.25" R. Where were you measuring from to the ground ? Thanks, Bill
I've got a abody with qa1 double adjustable on front single adjustable on rear 732hp 726tq double adjustable trailing arms upper and lower what else do i have to buy or do i have enough to test, this is a street car.
BFT Racing channel thanks so much for your comments! I enjoy Anton and I am running one of his 1.69 glides in my 53 Studebaker. Glad I met him! Thank you for dropping a comment! Go fast, go straight! Be Safe!!
With the front weight known you can measure the spring compression vs free length and calculate the amount of compression on each spring. This is for linear rate springs and not progressive weight springs. This is not perfect but will get you close. Of course, you have the (front total weight - minus unsprung weight)/2 for each front corner weight to use to see how much the spring compresses. At the end of the day, springs are not crazy expensive so I would just get a set of new springs and move on... Go fast, go straight! Be SAFE!!
Grazza Herridge thanks so much for your question! More than likely the COG is going to be much higher with a straight axle, so depending on how the car plots out on angles and weight, it will most likely be a tighter setup. Go fast, go straight! Be Safe!!
Juggernaut_GTO thanks so much for your question around IRS! We absolutely do alignments and help with IRS but not too much for hard core drag racing. Not saying you cannot make it work, just admitting I am not your best source for that. Go fast, go straight! Be Safe!!
@@KevinWilsonSBC well how my stock suspension works is it will always squat. I do have a question though. Should I look for separation between the rear tire and the car right after the hit? I notice that right after the hit it looks like the tire moves up towards the car. Would I want to decrease my rebound setting so it extends faster and keeps the tire planted? I know this is a rear suspension question on a front suspension video but thought I’d ask. Also I have a SRA swap ready for it so I’ll be making the switch but I’m trying to see how far I can push the stock rear end first.
