Traxxas xo-1!

[killajb]

I'm in Lauderdale.. PM me with some info the next time you guys are gonna run.

[MiamiJato]

Originally Posted by anunaki

You ready for I-95 crazy car chasin speed huh ha hahhaa Ill call you later

Dude, come out to Doral on Sunday afternoons and do some speed runs with us. We have a perfect lond street that we do our speed runs on. 12th ave and 93 Court.

[MiamizFinest]

Originally Posted by anunaki

You ready for I-95 crazy car chasin speed huh ha hahhaa Ill call you later

Never got the call!!! Did you end up running anyway

[myndseye]

I have addressed many of this cars shortcomings, and there are a few. Primarily the cut of the body, (to be expected), and the sloped section right behind the front splitter. At high speed the angled section behind the splitter is a great feature for creating lift. Maybe it was designed in to make the car more aero neutral, because I can't believe it was overlooked with as much development this car supposedly went through, but I think it is a good variable in the blow-overs that plague this car in running videos. The novice of the current drivers is probably a huge factor as well, but that goes without saying. The body has too much flex and is unsupported in key places in the front. Interestingly, if you keep cutting it down and lower the body mounts two holes, a lot of the flex goes away. It is almost solid enough for me to try it without bracing it, but I doubt it. The slots the sides sit down in also get a firm grasp once the flared section on the lexan is what seats there, after all the material below it has been removed. I have a few more secrets that I have done to it to improve the aero signature that I won't reveal, but I will say this. The front high downforce splitter should be reinforced at its widest points. Too much flex before any downforce produced there gets transferred to the chassis. Finally let's change out that motor and speed control, and bump this thing up to 8s.....

Interesting ideas myndseye....

I'm going to look into lowering the body, did you leave the rear the same?

[myndseye]

The rear was lowered as well. I took material off all the way around until the hood rested on the shock tower to provide additional support for the front. Also, in reference to ride height, (contrary to what is known as fact) I think low and firm, will be trumped by high and soft. Leave it kind of high but more importantly soft. Don't change the springs. At speed, it seems to be the little things that unsettle it. Remember, Traxxas has incorporated all the go fast variables into the chassis, but as anyone who follows F1 can tell you, the parts are invaluable to the whole. If the ground effect of the flat.bottom and diffuser get disturbed, let's say by running over a small rock, the downforce they create will be uneven and possibly introduce a turbulence promoting lift. The soft suspension will help the shocks absorb the inconsistencies of a pass, and increase the period of any sudden events. This may give the car a fighting chance to absorb, and have a successful pass. The soft suspension also will do little to resist the increasing downforce (produced as the car accelerates), from pressing it into the ground. This will make the car sufficiently low, when it is the most important, while still retaining effective damping. I just need to find some progressive springs to help me fine tune this, but it seems ok with the stock setup for now. Just adjust the suspension so that the front is not higher than the rear during hard acceleration after about 40mph.

Tip - Rake of the body can increase or decrease downforce so don't forget the body mounts as a tuning tool.

[hashemio]

In order to fix my problem, I used tougher springs all around and I put weights on the front as well as 50K diff oil in the back and it handles the front and back end much better.

[myndseye]

Originally Posted by hashemio

In order to fix my problem, I used tougher springs all around and I put weights on the front as well as 50K diff oil in the back and it handles the front and back end much better.

Weight is a last resort with me. Though I have seen them get these cars more planted in the front, it is a quick fix that will hurt me in my quest for 125+ mph.

I agree with the softer suspension comments. I'm still on stock springs, but I had a ton of preload in them before. My buddy made a comment, so I lowered the car back down, and it seems more planted.

I'm thinking stock springs, with just enough preload to keep it from scraping the ground at speed.

once weather clears and gets a little bit warmer Im gonna try and see if it will do 100 with this ofna lambo body with no wing

http://youtu.be/92lOdXWgnpw

Originally Posted by FLoJo

once weather clears and gets a little bit warmer Im gonna try and see if it will do 100 with this ofna lambo body with no wing

http://youtu.be/92lOdXWgnpw

Negetive sir

Originally Posted by anunaki

Negetive sir

dont think so eh ... hmm neva know till u try it though

[Thirdgen89GTA]

Originally Posted by anunaki

Negetive sir

Originally Posted by FLoJo

dont think so eh ... hmm neva know till u try it though

I don't see why not. My OFNA Hyper One Seven reached 72mph with a Novarossi 528xr. And I know its very easy to build a brushless system with more power than the Rossi had. The body is sound.

My Hyper 1/7 has the SAME body as in the video.

damn nice collection
if you passed 70 then this will hit 90-100 for sure even without the wing

[Thirdgen89GTA]

Originally Posted by FLoJo

damn nice collection
if you passed 70 then this will hit 90-100 for sure even without the wing

The stock plastic wing does little more than add drag. its nowhere near strong enough and deforms greatly at speeds above 50mph. I ended up replacing my rear wing with a 1/8th buggy wing.

Took a huge hit in top speed, but gained incredible grip at the rear wheels. I also ran into trans durability issues with the power of the 528xr. OFNA warranted it 2 times before saying "no more". The Transmission was a 2spd w/reverse and cost $250 a pop. It also weighed in at 390g, as much as the motor itself. I dropped almost half a kilo off the car just by switching to a center diff.