UCI gearing rule?

[aykay]

Just looking at the pics from the latest uci world cup, and noticed nobody is running working gears. It seems they have dropped this rule? Does anyone know of any official document saying they have?? I have checked the uci website but i couldnt find anything

[Stikman]

Nah, I couldn't find anything either.

[r464]

http://www.uci.ch/imgArchive/Rules/7tri-E.pdf

It is still in the rules on the UCI web site.

[MikeTheBike]

I have it on good authority that they have dropped the gear rule "unofficially" for 2006 and will be amended in the rules for 2007. This is corroborated by Kenny Belaey's intimation of same in the article interviewing him translated on this site.

[rush]

Excellent.

[Peace]

Excellent.

.

[jmkimmel]

Does this mean the 'big names' in trials bikes will start putting track ends on 26" bikes?

[tomacropod]

nope. They're a bitch and require a rethink of existing components. I personally would prefer a stable rear wheel position which I could use with a disc brake and QR hub, and a tensioner. Vertical dropouts are probably a bit lighter too, if you're into that.

- Joel

[stocktrials]

so no gears required at NZ??

[jmkimmel]

nope. They're a bitch and require a rethink of existing components. I personally would prefer a stable rear wheel position which I could use with a disc brake and QR hub, and a tensioner. Vertical dropouts are probably a bit lighter too, if you're into that.

- Joel

Really? It seems like 'they' immediately went to track ends for mod bikes. What rethink of components would be needed (brakes seem to line up OK on mods)?


Edit:

I suppose having control of your chainstay length down to ~12mm could convince me to stick to vertical drops and tensioner.

[durkie]

yeah, people get so e-finnicky about their chainstay length/bb rise (not calling you prissy or anything ;)) though it's hard to find an elegant solution. i think tensioners are crappy solutions, just cause they're so vulnerable.

i'm not sure how it would hold up, but i think eccentric bottom bracket is a potentially great solution...just cause i feel like rim brakes on their way out, and slotted disc holes sound like trouble. leeson's starting to do ebb on some of their frames, so i guess we'll see.

[tamu]

How much room do you need to slide the wheel? Take out one link, maybe use a half link?

maybe those old style long vertical drop outs, with a very small amount of play would work

as far as adding more weight, it seems to me an excentric bb or hub would add more weight!

and as far as an excentric hub, it will move the chainstay length just as much as long dropouts!! how do you think they work? But as far as I know, not many people will be able to feel the difference on 1cm of chainstay..

besides, I am sure frame makers could use the most common cogs and find a length that works good with only a small amount of adjustment, if almost any at all..

and with the semi verticle dropouts, you might still be able to use qr

[MikeTheBike]

Horizontal dropouts and disc brakes seem to have been working fine on motorcycles for a few years now.

[Stikman]

They use tensioners though. So you go right back to the weight/breakability issue.
Also bike companies aren't going to want to re-tool just for a rule change. I think vert dropouts and tensioners are the go personally.

[tomacropod]

opinion people, opinion only.

- Joel

[stocktrials]

so no gears required at NZ??

[AgrAde]

i'd take a sprung tensioner over a horizontal dropout any day of the week.

so no gears required at NZ??

quite certain.

[tomacropod]

^^ vindicated by a native.

- Joel

[rush]

^^ vindicated by a native.

- Joel

omgz awesome.

[Cryo-Cube]

keep it vertical
Those lazy ass trial companys just have to bring out small and smart tensioners like this one.
But nooo they are to busy bringing out products that fall apart if you scratch them with your thumbnail.
small, light, upward tension and takes a beating due to its position and small size. There is on hanger, the whole thing is a tensioner.

http://img440.imageshack.us/img440/749/p11400969zh.jpg

http://img440.imageshack.us/img440/5262/p11400989fw.jpg

SMALLSZ
http://img440.imageshack.us/img440/6862/p11400931ce.jpg

[Cryo-Cube]

cabone version

http://img96.imageshack.us/img96/9673/p11401112ad.jpg

yet another version
http://s2.bilder-hosting.de/img/UWUQL.jpg

[jmkimmel]

Those tensioners are money. Are those commercially available, or are they truly custom bits?

[Cryo-Cube]

custom made, since they have to fit perfectly to the frame.
Koxx & co could make them for every frame... but like i said, they are too busy making other parts that fail you in less then half a year.

[AgrAde]

^^ vindicated by a native.

- Joel

just talked to the organiser dude. definitely no gears :run:

[rush]

just talked to the organiser dude. definitely no gears :run:

omgz awesome.

[durkie]

so the right most bottom bolt holds the pulley, the one to the left is for tightening the pulley arm at appropriate tension....what does the one to the left of that do?

also the only reason i was hestitant about slotted disc mount holes is because it seems like people are already having enough trouble with avid calipers shifting on the rear. i understand that eccentric whatever is going to cause a shift of stay length/bb height...but yeah it's probably not too significant.

[Stikman]

That design is sweeeet!!

Sux to have King fun bolts now though :(
Have to suss out how to make it easy to remove my wheel without grinding my frame out now. (Fun bolt threads catch on the dropout, cos they too fat).

Cheers Cryo :)

[Cryo-Cube]

so the right most bottom bolt holds the pulley, the one to the left is for tightening the pulley arm at appropriate tension....what does the one to the left of that do?

(on the aluminum designs)It holds the spring that pushes up the pulley

http://s2.bilder-hosting.de/img/UXAOW.jpg

http://s2.bilder-hosting.de/img/UXSRL.jpg

[stocktrials]

and to think we went a whole season's worth of debating, page after page of forum discussion (Australia board), top Pro class riders running a shifter and cables... for fuck's sake. hahahahahaha