When Lipo first came out we discussed how the shape/size flexibility could effect car design/performance. First, short packs changed the weight/balance equation, now we see where it can go. Imagine a 2wd stock buggy running @ 1350g? Or a modified buggy running even lighter with a 380 size motor, instead of a 540?

What about the same combination changing the layout possibilities of 4wd buggies?


http://www.arrowmax-rc.com/AM-LIPO-C...2025.1mm).html

Is pretty amazing to see the changes over time, and wonder/imagine what the future will bring. Space wise around an old 4 cell 1/12 pack and shrinking, with run time to spare.

I'd run 2 of those Arrowmax in a regular saddle layout, and feed 4s to a 2000kv 540 motor. 1/10th racing needs to jump to 4s or higher and take advantage of the efficiencies of higher-voltage setups.

What kind of run time would a 2wd buggy with a 10.5 get with this?

My imagine? "stock" cars of not long ago raced at this weight, and lighter.

It isn't hard to get a B5M down to this weight right now with current products. It isn't, and wasn't ever about being light. It's about carrying speed, and having grip available to do it.

Stock buggies have never legally been run that light. ROAR legal minimum has been the same as long as I can remember. Been racing since '85.

Light weight is always faster. If weight makes a car faster than something is wrong with it. Adding weight takes away grip, not add it. This is why no Motorsport has a maximum weight, only a minimum weight.

still not the lightest shorty on the market (160g). The LRP super shorty is 132g.

https://www.lrp.cc/en/products/coming-soon/produkt/lrp-2600-super-shorty-110c55c-74v-lipo-110-competition-car-line-hardcase/details/

The 0.16kg is listed as a shipping weight. Wouldn't surprise me if they were much closer in weight/mass once taken out of whatever packing is used.

I wasn't aware of the LRP, looks to be pretty similar size/weight.

Anybody run one?

HobbyKing has a "super shorty" 2600mah pack now too. Costs less than $20. I think I need to try this...

Tried it a while ago on my old photon. I liked it. Beware, the Hobbyking battery requires 5mm plugs.

Edit: since you mention 2wd buggy with a 380, I'll add a picture of my weird Mid B3. Weight is 865g without body or wheels.

I suppose the biggest issue will be finding springs of light enough rates. Most of the off road chassis out right now use springs at the low end of the offered ranges.

I have been playing with the possibilities that arise as a result of using brushless and smaller lipos, specifically the LRP super shorty. The original concept was to centralise the mass and as a result I have gotten a ridiculously light car that handles VERY well. I took the car that I designed for low traction dirt and it actually works fairly well on carpet. I am currently building a purpose build carpet car with very low center of gravity. Here is the build thread. http://www.rctech.net/forum/electric...-tlr-22-a.html Here is the car minus the front wing. The car is currently 1390g on the track. Had it down to 1365g but I am sorting out some servo issues that will take some time.

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Really like the idea of a 380 motor because I am building a custom motor plate / shock tower for my new carpet car. That would make the car insanely light!!!! With a little work I could easily get the car down to 1200g or less, saving almost 100g just on the motor.

P.S. And yes, I'm running the lightest rear springs!

Nice work! I especially like the body concept.