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foozmeat
Posted: Fri Apr 28, 2006 3:05 pm Reply with quote
Joined: 24 Jul 2005 Posts: 138 Location: Here

How hard would it be to fabricate a front chainring?
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Aaron
Posted: Fri Apr 28, 2006 3:07 pm Reply with quote
Joined: 25 Jul 2005 Posts: 4645

hard! Denny could do it easy!

I knew a guy that made an oval one back in the early 1980s.

Grab a block of alumuinum and a file!
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foozmeat
Posted: Fri Apr 28, 2006 3:08 pm Reply with quote
Joined: 24 Jul 2005 Posts: 138 Location: Here

Jesus Aaron you responded like .005 seconds after I posted that. Don't you run a bike shop?

A file -- not for this design. Check out this dude's page

http://www.blackbirdsf.org/chainwheels/

The one I'm interested in is

http://www.blackbirdsf.org/chainwheels/images/solida_cats.jpg

Obviously the design would need to be modified and cleaned up but that's the basic idea.
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Aaron
Posted: Fri Apr 28, 2006 3:35 pm Reply with quote
Joined: 25 Jul 2005 Posts: 4645

foozmeat wrote:
Jesus Aaron you responded like .005 seconds after I posted that. Don't you run a bike shop?

http://www.blackbirdsf.org/chainwheels/images/solida_cats.jpg

Obviously the design would need to be modified and cleaned up but that's the basic idea.


No, I spend all my time on the forum.

Meow, that cat design is purrfect!
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SeditiousCanary
Posted: Fri Apr 28, 2006 6:19 pm Reply with quote
sorry, can't make it! Joined: 26 Jan 2006 Posts: 2315 Location: Fremont Troll

foozmeat wrote:
How hard would it be to fabricate a front chainring?

Not very. Depends on how detailed you want it. I would either CNC it, or EMD it. Getting the teeth on would be the "hard" part, but not that hard.

Got access to a CNC vertical end mill?
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josh m
Posted: Fri Apr 28, 2006 6:55 pm Reply with quote
Joined: 09 Jan 2006 Posts: 448 Location: portland

my friend who is building my wheels was talking about design lacing on rims... his next set of wheels he's going to do some crazy design... there's like honeycomb and crazy swirly shit.
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dennyt
Posted: Fri Apr 28, 2006 10:25 pm Reply with quote
rocket mechanic Joined: 02 Aug 2005 Posts: 2708

Yeah, I might into making something like that. BCD (or one-piece crank), #teeth? 1/8 or 3/32 chain?
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foozmeat
Posted: Sat Apr 29, 2006 3:38 pm Reply with quote
Joined: 24 Jul 2005 Posts: 138 Location: Here

dennyt wrote:
Yeah, I might into making something like that. BCD (or one-piece crank), #teeth? 1/8 or 3/32 chain?


Well if it was for me I'd say 110 -- 1/8 -- 43T.

That site I linked above has an amazing variety of chainring designs. Why do only the BMXers get rad chainring designs these days?
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foozmeat
Posted: Sat Apr 29, 2006 3:39 pm Reply with quote
Joined: 24 Jul 2005 Posts: 138 Location: Here

SeditiousCanary wrote:
Got access to a CNC vertical end mill?


Sadly no. I'm ignorant when it comes to this sort of thing.
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punkgrl
Posted: Sat Apr 29, 2006 9:11 pm Reply with quote
Joined: 31 Jan 2006 Posts: 177 Location: Random Couch

No shit. Some of those chain rings are the bomb diggity! Denny you should start manufacturing and selling this stuff to nerdy bike folk like us!

_________________
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