2008-2010 Husky SMR 450/510 Cheap Axle Sliders Guide (Fabricate Spacers)

Hello Everyone,

I've been working on getting some axle sliders. Since I'm a cheap cunt (after all, I'm Dutch) I'm doing that the cheapest way possible. So I ordered myself some skateboard wheels from China for €7, got some a threaded M8 bar, and selected some of my M8 nuts.
I quickly came to realise it wasn't plug and play. Of-course you can just more or less assemble them, but since everything about this bike is done right, I didn't want to make it look like a monkey wrenched those things on there. Since I'm a 4th year mechanical engineering student and have access to engineering software like Autodesk Inventor I came up with the following designs for spacers. My measurements of the bike's specifications and such are 100%, but ofcourse that doesn't mean it's 100% the same as your bike.

so what's important:
-fabrication at your own risk
-should fit on 2008-2010 Husqvarna 450/510 SMR
-you're free to use anything I post here, but please don't spread without my consent (or serial produce, the obvious stuff)
-If you'd want I can send the drawings / 3D models
-you'll need access to a lathe and lathing skills, or know someone who has/can
-units are metric.
-made to fit skateboard wheels with the following specs: outer diameter: 53mm, thickness: 30mm, axle inner diameter: 14mm, nut area inner diameter: 21.5mm, deepness of nut area inner diameter: 10mm
-any questions feel free to ask
-orientation in photo's is like you're riding it. braking side is right side, shifting side is left side, front tyre is front side.

tools and materials needed:
-2x hexagonal socket 13mm
-a lathe with aluminium blades for cutting, grinding and chamfering, and a drill-bit preferably exactly the diameter of your treaded bar (M8, 8mm-ish, mine was 7.9mm)
-a grinder with cutting plates for aluminium, or a milling machine, or basicly anything you can get your hands on to clean away excess metal of the Front Right Spacer.
-4x 40mm long Aluminium cilinders with a diameter of 30mm
-2x M8 locking nut, eg. DIN 934 (make sure they're not too "high"! DIN 934 or similar height will fit nicely!)
-2x normal M8 nuts, not too high but in general you'll have to worry about that with normal M8 nuts
-4x washer outer diameter 21mm, inner diameter 8mm, thickness: 1mm. Or make them yourself while lathing the Spacers like I did.
-4x skateboard wheels, axle inner diameter between 8 and 14mm, nut area inner diameter 21.5mm, deepness of nut area inner diameter: 10mm
-2x treaded M8 bar, approx. 400mm long
-a metal saw to saw the Bar to the correct length
-a calliper or other necessary measurement tools
-Locktite, very strong permanent one like Loktite 601


reference photos:










Assembly photo's

right front side


left front side


left rear side


right rear side



Specific pictures of spacers

right front side


left rear side



working sheets
complete with tolerances and everything you or your lathe-engineer will need to make you the thingies. Note that the inner diameter of 8mm is a reference to whatever real diameter YOUR M8 tread is. The given dimensions are optimal and tolerances indicate how you can derive from them.

washers



front right spacer


front left spacer


rear right spacer


rear left spacer


Continued in next post

Machined Products
Using the drawing I gave your result should look like these. I found that none of the chamfers were really necessary, I'll leave it up to you whether you make them or not.

washers

washers in the wheels


front right spacer



front left spacer



rear right spacer



rear left spacer



together they should look like the ones down below






Finalising
Next, apply locktite to one end of the treaded M8 bars, and put the M8 nut (nomal one) on it. Do the same for the other bar. Let them dry, alternatively you could just weld them together.
After you're done, assemble everything to this bar in this order: Washer-Skateboard wheel-Left Spacer-motorcycle-Right Spacer-skateboard wheel-washer-M8 locking nut.
When done with both axles count the amount of "treads" that are excess beyond the edge of the M8 locking nut. Then take everything apart again and saw the threaded M8 from the point it became too long.
If your M8 locking nut or threaded bar is not at least 2mm shorter than the edge of the skateboard wheel, it could grind the pavement in a crash resulting in breaking the parts.
Once your done assemble everything back together and it should look like the following

front right spacer


front left spacer


rear right spacer


rear left spacer



Endresult



I finished them, they work like a charm!

The fitment is perfect and I updated all worksheets and so forth accordingly. Luckily I haven't crash-tested them yet

Anyone is free to copy them for their own bike, questions are always welcome, just ask.

disclaimer: I'm not responsible for any faults, injury, damage ect. acquired during the fabrication/use of these axle sliders. Make them at your own risk, if you don't think you can, let someone else do it. As a old Dutch saying: "use your farmer's wit" which means always use common sense, basic knowledge and logic. If your make these too, enjoy, hope they prove good to you!

no cursing please. especially the one you used.

Joe, in Dutch I believe it means something different.

I made some for my son's 125 after he crashed on a slippery road. No machining needed here ( except for the skate wheels I had to drill to fit in the big nuts ) , I have the M8 bars and nuts ready but... he does not want them , he told me he does not plan to crash anymore, sait they don't have them on race bike, the bike looks like crap with that on, etc... So here they are on the workbench lol

Nice tutorial by the way Holland

Ah! Stubborn teenagers!
I don't plan on chrashing either but yeah, better be safe than sorry. Laying the bike down on the asphalt is a part of the learning process I'd say. Personally I think they look neat, but maybe your son will come around.

Thanks!

I went down today and can conform these axle sliders did their job. All the parts they're supposed to protect were undamaged while making a lowsider on the right side at 60km/h. The axle sliders themselves are still fine as well, only the rear skateboard wheel is considerably slimmer.