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Hi guys

Im seeing alot of posts about a racebomb or bomproof chassis what do they look liek or is there any pics Im new to the BL scene so wanna see what I should get ? Thank you

Here is the link to race bomb. After alot of research on various forums but no first hand experiance it is my opinion that the G-Maxx is a superior product. Additionaly note the stock status...Hmmm?

Racebomb

I never had a Bombproof chassis. So I can't comment on that. But I have a G1 and G2 Gorilla chassis, and they are awesome products. Nice prices, too.
You can get them here from Mike, and you can also get every individual part separately. Niiiiiice

Thanx guys Im looking for the lightest dont know what to get yet ?

To hit the same road like Papa;

I too heard and read a lot of good things on the G-maxx frame and i am just a sucker for CF, i don't like the brown/gray transparrant plastics.. It's a heavy frame.. I have seen quite a few broken racebombs.. The g-maxx is an ultimate lightweight race chassis and take serious abuse..

I can show you my BPP Torpedo chassis.

http://i11.photobucket.com/albums/a1...r/P7230155.jpg

Its an old pic. Much more done to it since then.

This was the first design. They then created the Racebomb which is close to the G2 chassis.
If I was to go back and do it again, i would most likely go g-maxx.

Lightest frame available for the maxx is the gmaxx, the CF one..

I've held a race bomb of a friend and it was surpisingly light. The only thing that I don't like about the chassis is not to be able to use lock tite which will chemically react to the chassis and become very weak.

It is deffinatly a very nice chassis for regular basher's and will do fine at the track.

you never had the gmaxx CF in hands.. It is lighter than light.. You need to keep your hands above it instead of underneath it..

:L:

I've also held an carbon g-maxx. It is lighter for sure, I'm not saying the race bomb is as light as g-maxx but it is deffinatly not a heavyweight chassis and really does fine at the track.

I really don't think you'll notice anything in handeling with either the g-maxx or race bomb when your truck is set up correctly. But if you want light, like mentioned get a g-maxx.

They are both excellent chassis, i have both a CF gmaxx & a CF racebomb. The race bomb is the most stable in my opinion because it two inches longer then stock. The Gmaxx is a little more agjile because it's a little shorter than the race bomb. They both work very well for racing, remember a race bomb won MONSTER MADNESS THIS YEAR. On a tight smooth to medium rough surface, the gmaxx gets the edge in my opinion. On a really rough track my personal opinion is the race bomb gets the edge .

Both are excellent chassis. Only thing is, the racebomb isnt in production from what I see and there was only like 5 CF racebombs made.

I would go with G-maxx simply because you can get the individual parts if need, like previously stated.

Thats true but i'm freinds with emaxx jeremy one of the partner's:eek: LOL!!!.


I would get the GMAXX , i promise you wont be dissapointed. I'm very satisfided with mine.

There were only two full CF bombs made. There were only 5 CF bottom plates, & 2 CF top plates made. The other full CF truck was sold to a guy in france, & i have the other one.

LOL, the braces are hollow and filled with Helium. Take the wheels off and you can use it as a plane..... :L:

Good one, Serum.

Already the alu G-2 is surprisngly light.

RCHippie, you must be lucky, then. You have a really unique collection;)

Rchippie, i missed your post.. I didn't knew RB made a CF chassis.. Guess it was a limited edition or something like that?

@dafni, i heard some people fill the tires with helium as well, looks like pure crap to me, because they are designed to breeth..

Also helium won't make it lighter it will just produce a force pushing upwards - which I would of thought is bad.

Nick, weight is nothing else than a force pushing downwards. So if you have a force pushing upward, you can subtract this from the "weight".

I could bother you with talk about gravitational constants and difference between "mass" and "weight", but I won't. Life can be so simple, but there is always a way to make it sound complicated.

(don't want to sound braggin', but sometimes nerdiness just takes over)

Serum, I could also calculate the buoyancy of 4 Helium filled tires, but I will spare you. It's most probably not even enough to lift a small 3mm screw.

Dafnerd

No, all the foam that is in the tires isn't filled with helium i pressume.. it might take some time to fil that up.. though helium is thinner than air, so it should give a faster respons to the tire...

Or am i completely wrong Daniel?

But if the helium is not balanced it will put the wheel off track more than weight would pushing down?

No, the mass of the vehicle prevents this...

Helium thinner than air? As in less density? Or less viscousity?
Both is the case with Helium, but the difference is neglectable, especially in our application.

As for faster response, I dunno. This sounds esoteric to me.
I like my tires with big vent holes, and "tune" the response with foams.

Nick, a gas not being balanced? In a spinning container?
I don't see this.

But anyway, Helium definitely has no real application in RC Monstertrucks. Unless someone comes up with a liquid Helium Cooling Circuit for BL motors :L: Stuff is hella cold!

Air tight tires in an r/c car would make for poor handling, regardless of the gas used. This is quite a fun conversation, though! Helium would pass through the rubber in time, wouldn't it? It always manages to escape the balloon!

Yeah, that's because it's thinner.. (in both ways..) i heard they run special gas, (i know the dutch name, don't know the scientific name for it..) in tires for powerbikes, the tire will run empty sooner than with air, but i thought they use it, because it hasn't got the large expanding air has got when it gets hotter..

(now THAT's one weird sentence...)

Closed tires on an RC vehicle makes the handling wors..

Not my bag of cookies.. We're on Daniels territory now..... Be gentle Daniel...

I have a non-nerdy ( :) ) note to add to this thread.
There's a show called Mythbusters on the Discovery channel here. They regularly take urban legends and myths and try to prove them wrong or right.
One urban legend is that a bundle of balloons at a fair floats a child away when they're all handed to the kid.
Mythbusters tested this by seeing how many balloons it takes to get a 40lb item off of the ground.
It took them about 3,500 balloons inflated over about 5 1/2 hours before they could get a 40lb item to lift from the ground.
They found that 10 party balloons would lift 100 grams.

What I took from the show is that helium really doesn't have as much 'lift' as we'd like to think :)

My boy loves that show.:cool:

And that gas is called Nitrogen. Thats what they are trying to get us to use at the shop. They want us to fill all tires with nitrogen as it doesnt permeate through the rubber like air does. Only one set back tho. Who is going to pay money to fill their tires when plain ole compressed air does the job.
Sorry about the digression. Moral is Nitrogen is up and coming but it costs versus air.

not only your boy.. This 29 year old boy loves it too..

Fun conversation, indeed.

Our air is 78% Nitrogen, btw. I think they fill tires with N2 instead of air to get rid of the corrosive oxigen. (O2 makes rubber brittle)

Yeah, Helium (He) are really small molecules. It's the second element on the Periodic table, and the first (smallest) noble gas. Small molecules may penetrate polymers (such as rubber) over time. The smaller the molecule, the easier it gets through.

Another funky thought. About liquid Helium, which has a temperature at ambient pressure close to absolute zero (boiling point of Helium: 4 Kelvin)
When you would have a liquid Helium cycle on your RC ....LOL .... (liquid nitrogen would also do the trick, btw) you could take advantage of it in another way as to "just" keep your magnet cool. Keyword: Supra Conductivity !! Rene, imagine this! BL ESC producers would go nuts! 100% efficiency!

Just a thought :L: Thanks for reading. Now I have to go and take a cold shower.

Yeah, i heard that from my electronic nerd friend.. i was more enthusiastic about this than he was...

;)

:eek:

Would water cooling from a PC system work? Modified to fit of course.

No, that's not cold enough.. it needs to be at the absolute zero point..

How much heat can a fan take off?

You wont reach absolute zero with a fan ;)

No, seriously, on my 7XL the fans save me app 20 degrees celsius. Might be more on a smaller motor.

Ahhh, supra conductors ..... :Love: Rene, do you know this nice experiment with the hovering piece of metall over a very cold magnet?

No Daniel, i have never seen it? how does it work?

Dafnerd, the thread hijacker. I'll go down in history :D

Anyway, here we go:
You know, there are some known Supra Conductors, but they only show zero resistance at very low temps. A room-temperature supra conductor is like the Philosophers Stone to some. The discovery of such a material would push technologie to another level, and most certainly bring the lucky scientist a Nobel price.
Anyway, there are some low temp SC's available, and if you have such a pellet, cool it down with liq N2, it will hover above a piece of permanent magnet. Looks very impressiv, always makes me think of perfect bearings.

Serum, you know a bit of german. Check this link, it has pictures and videos:
http://www.hcrs.at/LIQUIDN2.HTM

If one day you'll be here in switzerland, I'll show you this experiment.

Back to topic, now. .... What was it again?? Ah, yeah, buy a Gorilla chassis!

:L:

LOL! well Daniel.. we both have got a hand in it...

What a 'little' cold can do...

I love experiments.. We should make a waterrocket as well.. with a BIG reservoir..

Owh, yeah.. Get a GMAXX mate..!

:D

Serum, if they really use Nitrogen, it would have a very similar thermal expansion as air. (the thermal expansion of compressed gases is not much. It's more significant at atmospheric pressure. With gases, thermal expansion means more pressure. There's an awefull lot of equations on this, the infamous Thermodynamics of Gases. Very interesting, but a PITA to get in your head)