• Husqvarna Motorcycles Made In Sweden - About 1988 and older

  • Hi everyone,

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83/84 hub in place of 81 ??

GaryM

GaryM

Husqvarna
AA Class
Just picked up 83/84 hub with clean and round 18" rim for my 81 430CR Is the backing plate the same as 81 - just with different brake shoes. Looks like different spacer on left side. Who may have a spacer or backing plate if I need it for sale ?? I still need to re-spoke it.
 
GaryM;139299 said:
Just picked up 83/84 hub with clean and round 18" rim for my 81 430CR Is the backing plate the same as 81 - just with different brake shoes. Looks like different spacer on left side. Who may have a spacer or backing plate if I need it for sale ?? I still need to re-spoke it.
Click to expand...

Hubs are different if its a WR/XC or a CR, sorry. Usually, if I can remember right? the WR/XC has a lip extending from the hub on drum side to keep grit from getting to the shoes. Putting a WR/XC hub with a CR brake will have a gap between hub and backing plate. I machined spacers for my 82 CR250 when I used a 83 XC rear wheel assy.
 
Thanks for feedback - this is the rear hub it has deeper and extended
left side bearing area for a seal - which means a shorter spacer I believe. I just don't have the rear taken off my 430 yet to see how the backing plate fits. If it does? I was lucky enough to find a new NOS double leading hub and backing plate for front that I will lace up also one of these days soon.
 
Just from memory. I have switched a lot of rear wheels. The 1983 rear backing plate which seems to be the same part as the front backing plate before the double leading shoe will work with the conical hub 17, the 17 inch non conical hub and the 18 inch up to 1983. If you go back into the seventies the axle is shorter and the brake plate is different also. I don't have much cr stuff but Think that is the 17 inch non conical hub one I have used, those shoes I think are thinner but don't promise. The 1985-1988 ones I have wr ae xc all have narrower shoes and an extra lip on the drum and plate. You act like the 1983 and 1984 are the same however I think my parts pile indicates the water cooled dual shocked 400 (1984?) has the later wheel (hub included) and a backing plate to attach to the swing arm. It also appears some of the early mono shock ones used this backing plate but you have to tamper with the cam or arm in order to use it and the later wheel on the earlier bikes. Some of the earlier wheels with wider surface for the shoes have a seal and some don't the spacer doesn't seem to need switched when switching from one wheel to another. I forget which way it is if you mix them wrong wheel and plate one way there is a gap near the sprocket and the other way it rubs unless you can force a washer between the plate and hub and spread the swing arm a bit. I try and not run them mis matched very far. You should be able to figure it out wandering around the parts sheets.

Fran
 
I will edit this with a picture to proove there is an aluminum swingarm with the brake stay. Might even be able to find the backing plate I cut the brake arm so it works with the steel swingarms but that won't proove much just I cut the thing and welded it in a different position. If you go to the pdf files at Halls 1985 cr and xc sheet b3 part #37 is the stay. The xc version which attaches to the swingarm the long one is next to it for cr.

As for is the backing plate the same 81-83 well the cr one is definately different and I can't say about that. I can swithch wheels with no problem. I have an axle with about four inches worth of spacers, one of the longer ones which is designed for use with the wheel with a seal on the non chain side works fine for the wheels with no seal and you can kind of see the bearing. I am talking about the spacer that presses against the swingarm far from the chain not a steel piece in the plate.

edit
I operate better in mix and match mode than quoting years and models.

I also note the origional post pertains to the cr version, I suspect the change over of the hub to backing plate fit went through the same modification as I post here.


Apparently I decided to reverse the bends of a silver brake arm instead of cutting and welding. The 84 as I will call them and up seem to be a little longer in that arm.

the two on an angle are for the steel swing arm. the 83 ish one has a threaded place to put grease or oil for the cam pivot. The ones with the wider contact with the swing arm are originally for an aluminum swing am. By tinkering with the arm in this instance one can use the newer wheel with the older swing arm(steel) Of course if you can locate one like the one I call 84 you don't have to tamper. The hub is the later type it is actually an 1988 one which is lighter by close to a pound if you are really weight conscious. Strangely one of those with the larger flange had wider shoes and it fit in a wheel fine.
 

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To reinforce what Fran said, CRs had a full floating backing plate. This had the backing plate stay arm attached to the frame of the bike instead of the swing arm. This required the center hole of the backing plate to pivot as the rear suspension moved through its travel. WR and XC had the stay arm mounted to a point midway on the swingarm,
Two different parts....CR backing plate and WR/XC backing plate. CR has a "arm" molded onto it the stay arm attatches to. The WR/XC mereley has a bolt through it and the aluminum stay arm bolted to that and onto midway of the swing arm.
BTW for twin shockers. Single shock were different.
 
im planning on doing this conversin sometime in the near future, i was going to weld an adapter to the inside of a 79 swingarm, have the parts waiting, just need the time.
 
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