Tuning bomber for higher speed?
 

Hi all, I have my bomber pretty dialed in at the moment. Lots of upgrades, built it from a chassis and then I had AR60's from another truck and went from there..


Running a $40 goolrc brushless system that works fantastic, its 4pole 12slot but sensorless, crawls and rips great for what it is on 3s...


I'm trying to tune it to not tip over so easy. Its pretty low slung right now, but I'm running proline hyrax tires with the foams they came with star cut(what I had on my crawler) The sidewall folds over so easy.

I was looking at those cheap air filled 2.2" beadlocks on ebay since JPRC has run them on his bomber...


I know I'd need stiffer foams, but the hyrax's have almost too much grip.


The other option I've been told is to use the factory diff cup and install diff gears to have an open diff with silicone ear plugs (goopy ones) or some other goop...




Thanks
-Spence

Re: Tuning bomber for higher speed?
 

I've never heard anything good about the air filled rims, have you though about getting dual stage foams (Pro-Line dual stage or Crawler Innovation foams)? Do you have a sway bar?

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Re: Tuning bomber for higher speed?
 

Single stage CI foams and look into an open front diff.

Re: Tuning bomber for higher speed?
 

Yea I have a sway bar, Ive heard of the crawler innovations single stage deuces
Just can't believe how pricey foams are!

Well its not too bad lol but still

Re: Tuning bomber for higher speed?
 

Those air-filled tires are awful, pure gimmickry - and would make the rig bouncier than single-stage CI foams would.

Keep it low, wide, and stiffen it up a bit.

Re: Tuning bomber for higher speed?
 

2X on shooting down the air filled program, the problem is with the tires being designed for foams, not air pressure. Hyrax is a tall tire, helping the rooftop experiences occur more freqently. Hows about squeezing some 1.9s on the 2.2 wheels to drop the cg even more for go fast/speedster mode? What about standard height 2.2s like the KR2s from Axial? Making it wider would be ideal, but bent axles, bent...... would likely be the result there. Just out of curiousity, how fast are you going/wanting to go?

Re: Tuning bomber for higher speed?
 

I'm happy with the speed, but I may gear up a little for a u4rc track. currently its probably around 15-20mph. It just doesn't handle on a grippy surface.


I had a blast when there was this great loose dirt gravel at a walking path at a beach I went for crawling, it was donut and power sliding nirvana the truck wouldn't flip there...


Truck slides awesome on dry leaves pedal to the metal lol...


The motor is a 3800kv 4pole gool rc motor its a 3660 running it on 3s

geared 14/65

Re: Tuning bomber for higher speed?
 

As others already said, single stage foams are what you need. I run CI Deuces Wild foams in my Yeti and they work extremely well. The Yeti won't traction roll on dirt surfaces. A low slung Bomber, especially if the front is still locked will still have more tendency to roll than a Yeti, but it should still work very well with single stage foams.

Re: Tuning bomber for higher speed?
 

Stiffer foam, open front diff and Traxxas GTR shocks did wonders for me. It lowers the whole rig quite a bit so crawling performance not as good.


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