• Husqvarna Motorcycles Made In Sweden - About 1988 and older

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87 wrlc frame and 85/86 swingarm + shock

Michel Dufayard

Michel Dufayard

Husqvarna
Pro Class
My question:
Could it be possible to bolt on a 87 wrlc frame a 85/86 swingarm+ shock+ linkage ?
Is the shock bolted at the same height on the 2 frames ?
Thanks

400 Sven Erik Jonsson Mono 1.jpg

400 hva 87. 1.jpg
 
The one with the black tank #160 would have the 87-88 set up and the numbrless bike would have the 85-86 set up. There is a right to left difference in where the shock top mount goes and also a right to left difference in where the linkage attaches. The earlier has a big hemi joint as part of the shock and the later one had the hemi joint in the linkage.
 
fran...k. said:
The one with the black tank #160 would have the 87-88 set up and the numbrless bike would have the 85-86 set up. There is a right to left difference in where the shock top mount goes and also a right to left difference in where the linkage attaches. The earlier has a big hemi joint as part of the shock and the later one had the hemi joint in the linkage.
Click to expand...
So If I understand, it is not possible ! Thanks for the answers.
 
it could be done, but would require a bit of surgery but not really achieving anything..it is my understanding that the 87-88 style works better as well. sometimes im in the mood for the ergonomics of the earlier single shock though. i like both styles
 
It can be done, my '87 CR 240 arrived with an '86 WR swing arm (grounded down brake plate tangs and chain guide stub), linkage and '86 CR shock absorber (440mm/17.32" eye - eye centres).
The previous owner had cut and modified the '87 CR sub frame lifting it 15mm higher on the left side to accept the '86 shock's 'taller' body, gas reservoir & compression adjuster. There was quite a bit of slop(wear) in the linkage ball joint where it joins the frame and when every thing was torqued up, the linkage did appear to be slightly twisted. But it still worked well! The bike also sat a LOT lower as the top shock connection on the '86 bikes is much lower down the main frame rail, compared to '87 bikes position. With reduced travel in the rear end and in the case of the '87 CR's rear floating brake, there was interference between the rear brake stay arm and the rear chain guide, but not to cause real binding, but it was rubbing. The support arm had also come in contact the front chain guide's lower roller bolt head, causing a small superficial hole. The '86 swing arm's have a narrower profile.This 86/87 interchange would probably work much better on the 6 speed bike with the correct spindle & spacer. Mine arrived with the 1987 rear wheel, spindle and spacer 'shoe horned' into the '86 arm (probably porta powered in!!). Once it came out I could never get it back in by hand and had to find the earlier, smaller spacer! This setup could be quite useful for a flat track racing, so I kept my '86 stuff, just in case!:)
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Mmmmh ! I have a complete 87 wrlc Rolling chassis but with no papers,
and a 86 wrlc frame with papers but no rear wheels,no 86 shock and the 86 swingarm need some work !

I've used a 510 telc frame on which i've bolted on
all the parts of a 510 AC monoshock.
I remember that i needed to build a part to attach the shock a bit lower.
 
I was going to attempt to fabricate something similar to what you have done there on 510, nice job. Thankfully I came across a 87 wr250 which obviously worked better. What is that, 4mm steel plate? What ever it is, it looks to be a good solution!
I do have a spare 86 shck gathering dust, it has been fully rebuilt, fresh seals oil, re gassed, new bump stop, good straight shaft no pitting,56Nm spring has been powder coated. Here is a picture:-
 
It is made from 4 or 5 mm steel.
I've placed a spacer in the place where the shock took place before.
The bike was sold 10 years ago.
But if the linkage is twisted, it is not a so good solution.
 
Yeah, I agree the alignment is important! The wear at the ball joint probably made my original set up easier to assemble. I would imagine there was quite a lot of play there, throughout the whole range of travel. However I never noticed this, the bike didn't feel loose or vague at the rear end at all, in fact it felt planted. When I gassed it it felt like it was on rails!:thumbsup:
 
Bonjour Monsieur Dufayard,
May i ask you where the second picture in this thread was token?I ask because i saw the 510 Te with number 358 is the bike that KTM/Husqvarna uses for there new propaganda.
Regards,trieli
 
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