OzVMX Forum

Marque Remarks => Yamaha => Topic started by: mainline on September 28, 2009, 07:45:59 pm

Title: yz250g triples/forks
Post by: mainline on September 28, 2009, 07:45:59 pm

i'm bolting together a 250g for a mate, and after looking at the pics in the fairly recent VMX mag with the F&G models ( ;D) the triples don't seem to be the same.

The ones on the bike aren't raked backwards (at all) like those in the magazine, and the forks aren't able to be raised through the clamps as they hit the underside of the bars.

Does anyone have some pics or info on how the standard clamps should look?

cheers

Title: Re: yz250g triples/forks
Post by: Nathan S on September 28, 2009, 08:54:01 pm

250G had rubber mounted bars standard.

http://parts.yamaha-motor.com/partimage.gifx?d=172394,3,0,sport

Straight off the top of my head, I can't think of any Yamaha that had 38mm forks and "bars over the forks". All of the 38mm triples I have, have the generic swept back handlebar mounts.

The standard G forks are super long, and are designed to have ~60mm sticking out of the top of the top triple - otherwise they steer really badly.

Title: Re: yz250g triples/forks
Post by: motomaniac on September 28, 2009, 10:19:31 pm

F's had the same solid swept back mounts as 77/78.G's had rubber mount as in this link.

Do yours have onne or two pinch bolts on the top triple?

http://cgi.ebay.com/ebaymotors/1980-YAMAHA-YZ250-YZ-250-G-TRIPLE-CLAMPS-125-400-465-IT_W0QQitemZ390054996172QQcmdZViewItemQQptZMotorcycles_Parts_Accessories?hash=item5ad116e8cc&_trksid=p4506.c0.m245

Title: Re: yz250g triples/forks
Post by: mainline on September 29, 2009, 06:00:05 am

thanks guys, the ones on the bike look nothing like those.


Cheers

Title: Re: yz250g triples/forks
Post by: motomaniac on September 29, 2009, 09:13:15 am

Quote from: mainline on September 29, 2009, 06:00:05 am

thanks guys, the ones on the bike look nothing like those.


Cheers

Got   G and   F ones here if you need. Would like to see the one that you have. Early 80's 125 's had 38mm with straight up clamps.

Title: Re: yz250g triples/forks
Post by: mainline on September 29, 2009, 07:01:38 pm

Thanks Maniac ;D

I may have to take you up on that, the previous owner is checking to make sure he doesn't have them lying around his shed. The bike had been in storage for a bit, so they may be there.

The top clamp has a a part no. 24XOO ? don't know if that means anything to anyone.

Cheers again

Title: Re: yz250g triples/forks
Post by: brent j on September 29, 2009, 07:13:55 pm

One of my Yamaha No listing says 24X=YZ250K, 1984
The other says                          24X=YZ125K, 1983

and ZEDDER says YZ125K, 1983

Take your pick

Title: Re: yz250g triples/forks
Post by: mainline on September 29, 2009, 07:28:34 pm

cool, thanks.

Definately not 'G' then ;D

Title: Re: yz250g triples/forks
Post by: motomaniac on September 29, 2009, 07:35:05 pm

If its one pinch bolt witha 14mm head Then its 125 K ,the J and H had the radiator hose castings in the clamps from memory.

Title: Re: yz250g triples/forks
Post by: mainline on October 11, 2009, 08:19:11 pm

Motomaniac, check your PM's !! ;D

Title: Re: yz250g triples/forks
Post by: motomaniac on October 11, 2009, 10:03:10 pm

Quote from: mainline on October 11, 2009, 08:19:11 pm

Motomaniac, check your PM's !! ;D

Yer OK . I'll see what waht this week. Should be a set left. :)

Title: Re: yz250g triples/forks
Post by: mainline on October 30, 2009, 08:21:17 pm

A big thanks to Holeshot for helping me out here, went out of his way to organise a set from a guy at a swapmeet. He replies to his PM's too.

Given the goings-on about people ripping each other off I thought some balance was necessary.

Cheers