How to Build Traction in a Dirt Late Model 

Glad they are helping Doug. I have a variety of customers competing in different forms of motorsport like land speed cars, saloon cars, and sprint rally stuff. For road racing two key things compared to DLM geometry,. One: longer and way flatter (less angle) bars for less movement. Two: Liftbar set up less aggressive, don't need all the hike or anti-squat that we require. Always glad to expand potential gains from working with other car types. Feel free to contact me about more 4 link information.

I appreciate that Austin!!!

If you like to get greater in depth can try my guides until I put out next set of videos. Set up guide www.paypal.com/instantcommerce/checkout/4J87KMZC9D5PU Adjustment guide www.paypal.com/instantcommerce/checkout/9974U9XA5MTYS Tire guide www.paypal.com/instantcommerce/checkout/W6GF2X6VSBNFN

Ahhh yeah!

I have items to help you shorten the learning curve I have guides for set up, making adjustments at track and tire work. Along with one on one consulting.

And you are not wrong. As we all know there is more then one way to skin a cat. Having said that, you can't drive a car as sideways in slick as you can in heavy. If a car has large natural amount of roll steer it will keep wanting to turn car in slick. Taking bite out makes a car less likely to get to max droop as fast feeling like less roll steer but not as great of change as moving plates or changing bar lengths. Just depends on needs of driver to make car work for him or her.

Only useful for a crutch in my findings. RR lower below 3* at static means in dynamic you go below 0 and likely around -2 up to -4* . This means the bars go from one thrust direction to zero and then a negative thrust direction. This results in forces countering each other instead of working together. I found the 4-link rear end set up works best and more efficient if a bars forces all pushing same direction. Both LR and RR. However in tuning these things we are not taking grip away necessarily but changing it from one side of the rear end to the other. When tracks are heavy you want more right rear drive, more RR angle especially in the right rear upper bar. However this is the opposite when it's slick. I do decrease my angles on the RR but I never go below zero not lower because it creates an imbalance and the timing and how they're working together LR vs RR that is. But when it's slick I decrease that angle to allow it to work much slower and not get on the bars as quick. This makes the LR drive longer before the RR comes in resulting in more straight line traction exit to just on straight away.

Well I have found a the relationship between real world and sim adjustments is not the same. The accuracy in sim DLM racing is way off. Similar but off.

Try these two links to my other vids to start with. If still needing help contact me via email or my facebook page: facebook.com/dirtlatemodeltechtips ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-A83nPCkxUSE.html ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-zcmT324c5T8.html

Well if they want on my program all they have to do is contact.

Please email me and I sent you info to what you need.

Email me if you would or go to my Facebook page www. Facebook.com/dirtlatemodeltechtips

Please email me with some more information on your needs @ speedydave10@gmail.com

Yes there is huge mechanical traction to be harnessed from 4-link system. Just have to tune aggression you want in car.

Set up guide- www.paypal.com/instantcommerce/checkout/4J87KMZC9D5PU Adjustment Guide - www.paypal.com/instantcommerce/checkout/9974U9XA5MTYS Tire guide - www.paypal.com/instantcommerce/checkout/W6GF2X6VSBNFN

Not currently, but Knoxville about 3 hours from my house. I do travel and help teams at all levels. If interested can message me on my Facebook page facebook.com/dirtlatemodeltechtips

Driveshaft rotational direction.

You are right, not considered by most to do anything but it does have an effect usually over looked. And to be honest I really didn't consider it Factor to brought to my attention even though it's crossed my mind but being so narrow and low torque due to its size. But regardless there's still a force being applied.

There is 500+ lbs of engine torque being applied to the rear end gear as the rear end converts driveshaft rotation to axle shaft rotation. Drag strip racers run the left rear heavier to accommodate this effect. Circle track racers mistakenly assume that it is only to counter dynamic weight bias from turning left. I thoroughly enjoy your videos and thank you for this conversation. Keep up the great videos please!

@curt9i Now lets consider what happens to the effort at the lift arm when we change gear reduction. It changes. This will result in dynamic elevation change at all 4 corners of the car as the torque at the moment is changed.

2:48 Sunday June 4

Center link starting 13-18°

For LR chain I use minimum of 1500 pound chain.

Yes check out these items I offer in description below video

If you need to message me you can on my Facebook business page. Link is on my channel page.

If you would email me @ speedydave10@gmail.com

It is explained in set up and scale guide

Charles, that was a 2019 TNT with my standard a-arm lengths I start with majority of the time with customers. The spindles STD TNT with tie rods in forward position for smoothness down straight. Caster and camber are set to my baseline specs, I put everyone on to start same as in set up guide. Rear end 4 bar plates removed and my geometry and range of adjustment custom plates was installed. LR shock mounts relocated, and 5th and 6th also relocated to my base position. All ride heights we altered as well just slightly, springs my baseline same also as in guide. Shocks modified as needed to get attitude and desired feel for driver.

Message me on Facebook at www.Facebook.com/dirtlatemodeltechtips

Jay the z-link and swing arm have their uses and benefits. They still run in specific dirt motor sports and asphalt. However the swing arm is inferior to the 4 link geometry. The 4 link uses 100% of forward thrust to drive that side of rear. Where swing arm does not it's less then 50% since one bar is inverted. For old school this was on as cars were not as efficient with 4 link as they are now days. So swing arm take a little drive out yet cut down roll steer as well with it's up and down motion. Where as 4 link is down and forward.

Well there good information, basic I say and needs to be common knowledge. However more information is available.