chassis milling

[Mike Calver]

please can someone tell me a place where i can have my xxx-s chassis milled so it looks like the g+ one
thanks Mike

[DA_cookie_monstA]

Muchos Expensive, unless you know someone with a small Milling machine, and very amiable...

Ask Matt Winyard.

[rice98w]

the chassis material may not be suitable for extreme milling jobs!

[DA_cookie_monstA]

I think he wants to mill some slots on the belt tunnel down the centre of the chassis, which is possible, and the material IS machinable, but, the cost to a business of setting up a machine and operator to do it would be expensive....

But a friendly Miller (no not windy miller!!!) might do it on the fiddle... I mean pocket money..

[rice98w]

gotcha! i thought he was after putting holes all in the chassis everywhere!

i saw a pic of brian kinwals xxx-s and there was vitually no chassis left! and it had all pretty patterns in the belt tunnel!

saw it on RCTECH somewhere....maybe in the carpet nats section ::)

looked real nice but how much are you willing to fork out?

[Mike Calver]

i'm on a tight budget, the bloke who had the g+ before me had done the screws too tight so half of the threads are stripped :o
so i might try and get a 2nd hand g+ base
thanks Mike

[Tom]

i also saw that matt, i saw it on the team orion site where there is a review of the U.S. Indoor Championships that shows brian kinwalds chassis.

[marcoski]

I have access to an NC drill / rout machine, it can do any profile you like. I just machined an Xray chassis out of a carbon blank for a friend, fits like a glove. Its got a camera on it, so following a profile is easy, if time consuming. Took me two hours to code it up, and 5 minutes to rout it out, including the bumper and shock towers. PM me if you need any done.

[marcoski]

I wonder if anyone recognises this.....

[Mike Calver]

!!!!!!!!!!!!!!YEAH!!!!!!!!!!!!!!!!!
wow that is top ;D
thank you very much indeed
Mike

[richard_cree]

why do that to your chassis, just skim the entire area down to 1mm. Then you don't have to deal with air getting in under your car, funky handling and random stiffness....

[Mike Calver]

you are entitled to your opinion but i don't understand any of that.
the g+ chassis has holes all around it and it doesn't affect it's handling one bit. ???
it's not like it will matter any ways i'm only a club racer and am not in any comps.
Mike

[LisaKeen]

Rich, milling bit out of the side will not effect the stiffnes os the chassis, I have a G+ and wiped out the side at South Hants and had a chunk missing from the side there the motor is, but I still raced tha car all weekend and the car had not lost any of its stiffnes and had no tweek. (I have hens memded the chassis for looks). the beauty of the xxxs and ssssg+ is that all the structual stiffnes is all down to the central tunnel which the best runs down. adn ass the main things like suspentions towers are also atached to theis it makes for a very stiff car. So basicly the side bits are realy only there to keep the cells and electrics of the ground. ;D

[Mike Calver]

cool
thought as much ;D

[B_Final_Bob]

I saw Andy Moores Losi, before he went to Xray ( traitor >:( ) and his had no side pieces on (as in the ridge that goes around the chassis) it was flat apart from the belt tunnel!

I want to find the G+ chassis pattern and copy it to my normal chassis, apparently the team drivers don't like the graphite chassis and most have the plastic one back on.

Next bit is a lexan belt cover, as seen on Glenn Doman's Losi! Looks so cool!

[richard_cree]

I didn't mean that comment as an cuss, just I've always thought why don't people just thin the chassis out instead of making loads of holes. i appreciate the end results may be similar but it just makes more sense to have a flat sealed underside on a car!

[marcoski]

Oi , dont knok my milling, quite proud of it considering I did it by hand under the influence of chemo!!! ;D ;D ;D

Fully understand what you say though, but I would not like to do that by hand!! Couldn't get it on my machine as its meant for sheet work not big lumps like that!

[Mike Calver]

Rich
i suppose your right about having a flat bottom (that don't sound right lol)
would sure make the electrics sit in there better, although there would be a lack of cooling and i have a knack of over heating everything on my car :(

oh well onwards and upwards
can't wait to receive my lush new chassis ;D

[DA_cookie_monstA]

OK, I just been looking at my XXXS G+ chassis, and the only thing that I can see that gives the chassis ANY stiffness, is the drive tunnel, the rest of it is there purely to hold the electrics in, nothing else.

If the side pods were designed for rigidity, there would be some severe cross brasing goin on in there, this would be used to stop the chassis from twisting, which might be a good thing.

You could, in essence, mill out everything, except where you need to say, bolt the servo down to, out, leave a lip, and then just stick in some Polycarbonate sheet, and stick your electrics to that (plus you could make a rather funky NASA air scoop to get cooling air onto the motor....

hmmmmmm....

[B_Final_Bob]

There was no braces on the car, maybe he wanted the car to be very flexible? ???

DCM:- Sounds like a cheap HPI/ Hot Bodies Pro 3. Leave a bit for the cells and then two plates to mount the electrics to. Or you could mount the receiver and speedo to the side of the drive belt tunnel and do the same with the cells! You would have an extremely narrow car but maybe with quite a high C of G. You would have to leave the very front part of the chassis for the steering assembly and the bulkheads. Would make an interesting project...

[DA_cookie_monstA]

Going back MANY moons, to when I only had one grey hair, the PB Mini Mustang did just that. The car was basically a drive tunnel with suspension hooked off it.

Then, for convenience, you were provided with a small FRP chassis to bolt your electrics too, that actually gave NO rigidity to the chassis. But then the PB was prone to twisting....

I will see if I can find a picture of one for you....

Viola

http://www.rc-car-museum.de/1.10_Off_Road_-_kleiner_Auszug/PB_Mini_Mustang/Chassis.jpg

And if you thought the transmission on the XXXs/4 was ALL new, guess wrong, have a look at the setup on the PB

http://www.rc-car-museum.de/1.10_Off_Road_-_kleiner_Auszug/PB_Mini_Mustang/Riemenfuehrung.jpg

[DA_cookie_monstA]

And this is what they used to do to PB Mini Mustang Chassis, so nothing new in what we are doing now then!!!

http://koti.mbnet.fi/~tuotsi/uusi_sivu/harraste.cjb.net/iso/pbm0.jpg

[B_Final_Bob]

So does anyone want to try this on their Losi? Don't think i'm confident enough in my dremelling skills to try it. :- I think you would most likely need a professional milling person to do it.

I have worked out how get the cells on to the side of the drive tunnel, drill two holes, in line with the original positions, but drill through the other side (so you can put the screws in) and voila! Cells on side of belt tunnel! Might need some foam strips to hold the cells in better though.

The electrics can be mounted with decent double sided and the servo will have to stay flat on a piece of very stiff material.