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6" play bike design

i used the 200mm shock cos i already own one. the chainstays vary from 413-417mm, with fairly straight axel path. cant work out leverage ratio's or anything compex without linkage software.

19 Comments

alreadyupsidedown (Jan 18, 2011 at 17:57)

Ah, Iv got that on my school computers, although Iv never used it. We also have DS Solidworks, which is pretty mint.

craigtrials (Jan 19, 2011 at 2:55)

I'm sorry Art but it's basically the DW-Link, which you're not actually aloud to use.

www.dw-link.com/home.html

RaleighVoid (Jan 19, 2011 at 4:38)

lol i can do what i want if im not making money out of it. but yes i guess your point applies of i wanted to do a uni project on it!

bea5ty (Jan 19, 2011 at 4:39)

You can use it, but Dave Weagle will hunt you down

RaleighVoid (Jan 19, 2011 at 4:47)

lol. its got a US patent but patent pending world wide...which means if other countries patent system is a lot slower, he cant kill me until the patent clears.

bigbluebike (Jan 19, 2011 at 4:48)

Yeah if you're not making money from it, Dave Weagle can't cut your balls off. Just build it arth, it looks sweet!

RaleighVoid (Jan 19, 2011 at 4:50)

it will get built, but... for my project i wanna use this, and study the effect of 'rear end' material/weight on the suspension tracking! how cool would that be. not sure where id stand with the 'patent pending' though

bigbluebike (Jan 19, 2011 at 4:52)

That would be pretty wicked like.

bea5ty (Jan 19, 2011 at 10:17)

Yeah make it, i'm sure you can get around the patent so long as your making it for yourself and not doing it commercially.

RaleighVoid (Jan 19, 2011 at 10:23)

oh sure, shouldnt be a problem. had an idea of making my own angle set - basically a headtube that un-bolts and comes off frontwards, then a sleeve with the central axis angled by a degree or so from the steerer axis. by turning it 180 degrees two head angles would be possible. It would have to be done to a high tollerance though...

Oscarmonk (Jan 19, 2011 at 8:23)

sos arth but thats abit sad

RaleighVoid (Jan 19, 2011 at 9:20)

haha screw you, do you plan on making a frame sometime in the future? no?:P

craigtrials (Jan 20, 2011 at 12:14)

All sounds good to me Art, especially if you make it from steal, would be sick.

RaleighVoid (Jan 20, 2011 at 12:22)

yesss, and have you seen my axel path graph? its totally rearward! (which ive just found out is a GOOD thing haha, better for rock gardens aparently) worked out the leverage ratio which also works out to be good, ie sensative when at start of travel, stiffer near bottom out... wicked

Oscarmonk (Jan 19, 2011 at 11:32)

acctually i sent in a frame to kingdom bikes and they really liked it

RaleighVoid (Jan 18, 2011 at 15:22)

RaleighVoid (Jan 19, 2011 at 11:22)

ok correction. i can work out leverage ratio, im doing it in excel. fun.

alreadyupsidedown (Jan 18, 2011 at 15:33)

What program

RaleighVoid (Jan 18, 2011 at 15:38)

the program i used isnt even designed for what ive used it for, its a 3D package, Autodesk inventor. it was pretty hard to get the bike linkage to behave propperly without spazzing like you saw near the end. this is just the 2D sketch mode which you'd normally use to extrude into 3D. id recomend... bike cad...? never used that though. or 'Linkage' thats good, youve gotta pay for it though

6" play bike design

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19 Comments