OzVMX Forum
Marketplace => Wanted => Topic started by: Viper79 on March 17, 2011, 07:07:29 pm
-
Wanted: YZ 465/250 H 18 inch rear wheel. Something good enough to fit for the flat track at HBBB
Regards
Rob.
-
Hi rob
I have a YZ250H r/wheel $100
[email protected] or 0410644974 roy
-
YZ 250 G and H rear hubs are not interchangeable, axle size and brake backing plate differs.
Small axle, chain tensioners and chain tensioner bushings, axle slot in swingarm on G and large on H - the brake backing plate is larger on the H and smaller on the G.
Make sure you take this into account before you order parts. Having said that you can fit the H model rear wheel and axle, spacers/tensioners and brake backing plate into a G but swingarm mods are required (enlarge slots to accept the oversized hardware).
You will have less hassle fitting a J or K model rear wheel if you change the bearings to G model spec (maybe-you will have to check with your bearing supplier to see if you can order a bearing with the larger O/D and small I/D to make the fit) and use the standard G axle, brake plate and hardware.
For some reason only Yamaha could explain, the rear hub went from all new design from the F to the G and again changed to the H and reverted to the G model casting (identified by 3R4 Cast into the Hub between the webs on the Brake side) but used a larger bearings to accomodate the larger H onwards axle.
Confused? Stick with correct for year if your in a hurry, and remember not to discount the IT (H) Rear hub for compatability for YZ250H.
-
Thanks for that Rocket, I will change my request, I have a 465 H
Rob.
-
I would think that puts you in a more flexible bracket as you have the option of using either IT or YZ 250/465 wheels and if you do go for the 81 onwards you dont have the bearing, axle bushing, and brake plate issues associated with the one off G model set-up.
I think the 250H wheel offered will get you out of the woods at quite a reasonable price.
The quickest way of identifying the G model hub is the axle size (the brake plate to match will also have the smaller bore for tha axle naturally, same for the bearing spacer).
The spacers play havoc with your head too, Yamaha started to make slight adjustments to the length of the casting on the brake backing plate and shortening the steel spacers to suit the new Plate as year models changed. If you get a G,J and K rear hub together you can easily fall into the trap of deciding there is no difference except the part numbers quoted from Yamaha, but when you get down to putting the whole lot together you find the subtle differences will send you straight to the hurt locker - do not pass go, do not collect etc.
The other thing that is chopped and changed is the quantity of bearings fitted to each model, check out any number of parts diagrams available on the net and you will see what I mean. This is really one time that the part numbers actually denote a change that will result in some form of incompatability.
Cheers Jason