Cnc Boosters

[roby James124]

HI

I COPY THEM BUT I THEN DONT SEL THEM I USE THEM BUT IF YOU ALTER IT A BIT I WOULD BE SURE IT WOULD BE LEGAL

ROB

[joshywa]

My sister could do a better job

if you think its a bad design please free to give any advice i mean that is the reason ive posted up new pictures... to see if its improved or not

But if your sister is anything like you, she could probably do it better than me

I'd revise the thickness of your design, if it is to be made from aluminium I'd say it has nowhere near enough material in the right places for it to be effective.

As for the cross section, an I-beam would be better in theory as material will be placed at the area subjected to higher stresses. However the cross-section design that has been put forward (probobly un-beknown it its creator) is not that bad either. Materials such as aluminium and steel work better in compression than tension (in theory), therefore the reinforcent requirements for the top edge are less than those on the bottom edge (top edge will be in compression due to bending, bottom will be in tension).

A picture can tell a thousand words, but dimensions would tell us so much more...

your comment is right i wasnt 100% sure how effective the design is upto now its been pureley based upon aesthetics value not function, quick question what thickness would you suggest ? at the minute its 5.5mm thick and the top section drops 2mm to 3.5mm

as for dimention it stands something like:

bolt spacing 112mm to 100mm slots

each side (bottom to base of the arch) is 90mm

arch width 90mm

anymore help would be great thanks ???

Edited January 20, 2006 by joshywa

[chisholm]

hey wats all the bitch*n about lads no need for it!!!!

anyhoo i like the guys boster design would go with pritty much and new frame like with a contuinuous slope from headtube to chainstay great ideas hope this works and whoever said gav canny get his materias for 3 quid he can ive already enquired about this so its a big up for gav this time

go on gavna and i am expecting one for the zona

cheers

chiz

Edited January 20, 2006 by chisholm

[OD404]

Thickness depends on material, I've made a booster out of 3mm stainless steel and that was stiffer than any booster I'd used to date. However is weighed an absolute ton.

Aluminuim is the better choice, it has a better strength to weight ratio, but you will need more material to get the required strength. Take a look at the Koxx or even Heatsink's designs and you will see they are far thicker.

If you are serious about designing your booster from a performance point of view, I'd start reading up on "mechanics of materials". It's the only way you will get a design that works, even using fancy stress analysis programs are a waste of time unless you can validate the results they tell you (believe me I've been there). If however, you are only concerned with aesthetics, then go with what you have.

[Bored]

I think he has seen you coming! No way you could get that for £5 posted Are you telling porkies, Trying to make friends again?

Just make some in school on the CNC machine Or just do them by hand, Thats what I do!

Cheers K

[Guest]

I think he has seen you coming! No way you could get that for £5 posted Are you telling porkies, Trying to make friends again?

Just make some in school on the CNC machine Or just do them by hand, Thats what I do!

Cheers K

You have to have a design to work to before you start making something though, and making one by hand is a real waste of time if CNC machines are avauilable to him.

[Dougster]

I think he is getting a family friend who has a cnc machine at work to make them. They have plenty of scrap metal so yeah he could get the materials for free. How would you know if he copied a booster would someone report him or is it only illegal if you sell it on?