Alright, the mighty jzemaxx is back. It was nice talking to you on the phone and all the best for the new family.

Foams are allowed jzemaxx, but they have to meet the size required. I'm going to send my uncle some rims so he can have them wrapped with real rubber and when I have them here, I'll send you a set to try out.

Edit: There's a guy that actually have truggy foam tires and I'm thinking of getting a set. If I do I'll let you know how it handles the power. The Proline foams I have for my BPP truggy handles the power very well, but they work with the 14MM hexes.

Guess I need to find the tallest foam tire I can run. Imex I think had them. The truck has unreal power and the XLB buggy I have finished is even more crazy. I have just been held back by tires and the rules. I know the last speed challenge for the MT class they strictly said no foams, so I guess they decided to change the rules.

They better have some rubber tires that can handle the high speed to put such a rule in effect. I'm going to talk to my uncle tomorrow to see if he'll have some time to make my tires. They'll be rubber and I guess they'll be allowed.

Have you torn the Phalts at the edges yet? I have worn through an entire set because the edge will wear and then tear. The foams fly out and the truck loses it. Not good at 60+.

They split in the middle, the edges....pretty much everywhere above 70mph especially. They are brand new with 1 pass and they shred to pieces.

Sounds like you need something made from thicker rubber more than anything, or something like a real tyre that has canvas woven into it to resist stretching and ballooning. A rubber tube glued to a rim would kick ass though for sure, so long as its about 5.5-6" in diameter and about 4" wide- mucho traction....

I'm talking to my cousin now and he said it'll be possible to make a tire that can handle the speed. He said they're doing drag tires now as well for full size cars and they can have different mixtures of rubber for higher traction if needed. This is sounding good so far. I'm going to send him some rims and will see what happens.

look into under trays. Simple sheet metal work but if done right, you can reduce drag under the chassis and if REALLY done right, you can create a low pressure vacuum and actually get the car to stick to the ground. Thats one way a lot of race cars deal with elevation change and actually increases yaw stability. I think itll be worth someone looking into. I dont go over 50 so i dont really have interest in it...only for the real race cars/ gokart on roids:yes:

Main thing I have found is, get a wing on the nose. Mine tends to lift off quite a bit.

Also its time for a new Neu motor. I want more power...

Also the XLB is done with foamy tires on it. Buddy took it out for some runs on them instead of the phaltline wheels and tires since I didn't have time to drive it. First pass car did 87.3mph, 2nd pass 94.2mph and 3rd pass with modded wing for less drag got a nice 96.1mph. Going to be neat to see a BIG 1/7th scale XTM XLB buggy break 100mph! BTW, that is on 12S.

More power is always good.

What esc?

Turnigy 100A for now. Will be swapping to Lutach's unit...

They can only handle 10S though.

I need them with a brake and reverse though. The Turnigy's don't have squat.

Ok, that explains it :lol:.

Who needs a brake at that speed? I really like too watch the big cars go fast, dont want too see it hit someone in the shin at 90+..good luck

When they take off its hard to tell where they will fly to...lol

Perhaps you should add some servo operated flaps to the wings...

I've actually thought of something similar. Ever see the Chrysler Crossfire SRT6? The wing self adjusts as you go faster to increase the downforce. It would be simple to do with a small servo and 4 channel radio. You could adjust at speed. Or you could use something like a modified OptiDrive so it does it without human input.

Interesting idea, but they would need to be strong servos too, to resist the force of the wind rushing over them and pushing them down/up. Servo actuated airbrakes would be good though, to take the load off the esc when slowing down from high speed- hate to see the brakes lockup when doing 80+ mph- front flip carnage indeed..

Doesn't he run in RWD only on speed runs?

I run 4wd on all the trucks and buggy.