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Drag Front Tire Pressure Matters: Tech Tip Tuesday
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- Опубликовано: 8 фев 2021
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Makes alot of sense, I've always ran 40 but I thought it was for less contact surface. Never though about the springing. Solid tip.
Same
Yeah, I always thought only about more front tire pressure to lessen rolling resistance. Of course I have never had a car that could actually pull the front wheels. 😂
I absolutely love these Tech Tip Tuesday’s! Great info being shared.
Great tip, as a bracket racer they also change the roll out and how the car reacts for the light 💡
Definitely.
I think you need to do a video about locking a car down TOO tight as well, and how that's detrimental. I think many people are confused about suspension limiters and how they are not just there to stop the springing up but also to cause all that weight to "spike" to overcome the leverage causing the wheelie.
Great tech tip. For cars like mine that are no where close to doing a wheelie, lower tire pressure may help get more lift and transfer more weight to the back for improved traction.
I buy parts from Motion just because of these videos. Keep them coming, Doug.
Man that’s humbling, we appreciate your support and kind words!!!
Stock car tires are assigned a spring rate which is then used in the suspension tuning so this makes a lot of sense
Excellent tip Doug. Another important tip is the small window between enough air to stop the launch recoil and over pressure on deceleration. You mentioned 2-3 pounds, sometimes it can be as little as a half pound when the track is hot on summer afternoon, especially on the higher horsepower machines.
Now that you brought this up, I cannot remember my racing buddies checking front tire pressures. Dang. Also, my Goodyear skinnies don't have a recommended tire pressure on them so I have been running 30 psi!! No wonder the always look low and squat. I thought it was the weight of my 460 ci BBf up there. My car is retired from racing and just a pro street /cruise/car show kinda car now. Thanks very much for the Info. Good Stuff, Cheers from Motown.
Awesome to see the car getting so close to a 6.
Can't beat free information. 👍
Don’t know if it’s already been brought up in a video or not tried doing some research but could you possibly go over mounting and balancing a set of slicks on a bead lock rim I know ive seen people use balancing beads but maybe go over how that works and if you should use them or not
Excellent advice as always , if I can I would like to ask about your advice about dual pass radiators , I don’t understand the difference of using half the rad at a time and making it a dual pass vs running full available volume at once in a single pass , thanks again Doug and good luck on your charge to the sixes with that beautiful Nova .
Hey Marc, we have a video (albeit an old one) on this if you scan back. I think that’ll help to explain
Also the tire with more pressure has less rolling resistance because there is less tire on the road impeeding acceleration. So as the backs try to push the front rolls easier giving the torque a vector other than up.
It makes sense never thought about the tire being a spring gonna be sure to take compressor to track as s10's are notorious for wheelies TY as always
Always check all 4 tire psi before rounds and even try covering the fronts up if they are exposed to direct sunlight. Coming from circle track racing, we’re worried about each corner. I’ve carried that over to drag racing
I lowered my front tire pressure to help lower the front of the car to stop wheelies lol. Looks like I went the wrong way with that one. I started at 50psi for let’s rolling resistance
I loved the wheels!!! I wish they still made them!
That does really make sense, thanks bro!
Going to the last event of the season today so I'm running through all these tech tips again lol
Thanks you! Your whole teams eocks!
Depends what your trying to achieve
Great suggestion! Have never heard anyone talk about front tire pressure and specifically how it can contribute to excess front end lift. #wheeliessuck
So you can run 45 PSI in M/T ET Fronts? (bias) Good to know as I am fighting wheelies, though not to the same level as these guys. Thanks for the tip!
Thank You!
Bracket/ index racers have used front tire pressure as a tuning tool forever, there is around .020 worth of reaction time and ET just in tire pressure alone, with the tire pressure low it makes the contact patch longer which effectively gives more roll out. Meaning your reaction time is slower, but you get a bigger running start to make the ET quicker. We are talking about extreme fine tuning but it’s an absolute fact.
Yes sir! Good point also. Kind of forgot about the RT side of things
I get the bigger contact patch and longer rollout but wouldn’t a tire with more air pressure react quicker negating some of the longer rollout?
@@danmyers9372 no.
Front Drive 4700 lb. Car radial tires recommended air pressure @ the drag strip?
Thanks
Thanks for the tip!
Great video!
Nice tip. What's your opinion on balancing bias ply tires, rears and fronts for 1/4 mile? T.I.A.
Nova is badass!!!
Yes for a tech tip Tuesday I would very much like to know what kind of battery kill switch system you're running I've seen the back of your car and you have a push button is that NHRA legal or do you just never run in any NHRA events or what kind of system do you run for a battery cut off I to run a 70 Nova not nearly as fast as your car I live in Orlando Florida not too far from you and would just like your reaction what kind of system do you run for a battery kill switch appreciate it if you make the time thank you
What pressures do you usually run in the back slick? I have a set to try for the first time this summer.
I believe they run a drag radial on the Nova. Slicks are usually run at 10-12 psi, radials are run higher, in the 16-18 psi range.
I run my front tires at 32psi which is the manufacturer max pressure. Should I run 40psi that you recommend? My car will carry the front tires 60ft out about 2in off the ground......
Have to send some parts over to demo ranch
Bigun is the man!
He sure is!!!
I'd really like to know more about your14v setup. In your related video you said you kept relatively a stock alternator. Based off what I read that's not adequate to charge the 14v XS battery you're running (recommended 16.8v based on their documentation). Are you just getting by with that setup or did you manipulate the voltage regulator to increase the alternator's output voltage?
Why radials on the front? Do they handle better down track?
@BoostedBoiz Kyle... MR2.... check em....
Can you go over fuel system for the lt1 platform
Who makes aluminum body bushings for a S-10?
What about rear PSI?
How bout the diameter? Do you run a 26 or 27"?
26 on this car
Less contact patch with more pressure.
Have you become a snowbird having a place in FL and up north ?
By definition yes lol. Though I travel back and forth constantly to balance my duties
I asked a question last week and never got a answer 🤷🏻♂️
Which question?
World doesn't revolve around Wayne, dude. They're human and don't see every question.
You still didnt get a #
Motion raceworks is a anti roll bar any good on a IRS car ?
The answer is yes. Many IRS cars have them and use them that are fast cars. However, I do not have a lot of personal experience with such setups.
The higher the front pressure, your reaction time will generally increase as well.
The higher the pressure, the less rollout, therefore a drop in reaction time, not an increase...
@@c5pete - but the front tire will react quicker with more air.
@@danmyers9372 That’s exactly what I said.
Well yeah.. adding all that weight to the front will help.. +10 lbs to each tire =20 lbs and that much weight is a lot! Wouldn't it slow your E.T some tho? 😂🤣🤣🤣
Adding weight will theoretically slow a car down but if it converts lost upward momentum to forward momentum the car can 60’ quicker and be way more controllable and consistent. And most importantly stop the wheelies which can cause a lot of damage to the car. Adding weight is usually a last resort when suspension and tire pressure changes aren’t working. It’s usually a problem with bad weight bias/too much weight on the rear of the car.
@@danmyers9372 thanks for the info. I guess I have officially become a dad with my jokes. Tire pressure.. i.e pounds of pressure... air being used as weight. It was a failed attempt of a joke. Sorry you typed all that out because of me trying to be funny. That's why I hate tx msgs and posting stuff online. I can't always tell who is joking or not.