Arctic Cat rear shock on Ski-Doo

[GreyGhost]

Well the bracket is about 50% done just have to weld it up. I also tried to attach a video showing how everything still works the same as it did before.

 

[NoBrakes!]

So you basically built this kit yourself? With a lockout?

 

[GreyGhost]

So you basically built this kit yourself? With a lockout?

I can’t load the picture but yes it’s like the carbon sled kit. No it doesn’t have lock out.......

 

[skegpro]

No you get rid of them. The fox air shock has plenty of stiffness. If you need them stiffer you can get them re-valved. The swap is also lighter too!

You can technically keep them, no idea why you would want too.

From experience though your gonna want a lockout once you delete the torsion springs.

 

[GreyGhost]

You can technically keep them, no idea why you would want too.

From experience though your gonna want a lockout once you delete the torsion springs.

Yes you can but that’s one of the main reasons I went with this shock. It’s actually not that bad on the shop floor but I bet it’s going to be unpredictable as hell in the snow. I’m looking at making new rear arms so I’m not worried.

 

[skegpro]

Yes you can but that’s one of the main reasons I went with this shock. It’s actually not that bad on the shop floor but I bet it’s going to be unpredictable as hell in the snow. I’m looking at making new rear arms so I’m not worried.

Yeah had the nextech in and it would just go full stop, one side to the other.
Full rodeo.

 

[GreyGhost]

Yeah had the nextech in and it would just go full stop, one side to the other.
Full rodeo.

I could see that. Thinking of making a arm similar to the backcountry or the XP’s

 

[GreyGhost]

Finally finished the bracket. Had to cut a new upper shock bushing (last picture. The one on the right is the new one) and I’m hoping to get some final measurements and finish the template drawings and then I’ll upload those. Hopefully some one else will try it

 

[maxwell]

I am wondering if that’s going to rub and break that knob off, usually the shock has rub marks on the top in stock position now it’s even higher.

 

[GreyGhost]

I am wondering if that’s going to rub and break that knob off, usually the shock has rub marks on the top in stock position now it’s even higher.

I trimmed the bracket cause I was worried of that too. But yeah the damping screw shouldn’t hit, doesn’t look like it but it’s got about 1/2” between the track

 

[skegpro]

I trimmed the bracket cause I was worried of that too. But yeah the damping screw shouldn’t hit, doesn’t look like it but it’s got about 1/2” between the track

Got a picture of it fully collapsed?

 

[GreyGhost]

Got a picture of it fully collapsed?

I tried to upload a couple of videos but they don’t upload properly. Also can fully collapse it with air in the shock but it’s working fine and has no binding. I’ll see if I can upload them again.

 

[oler1234]

I tried to upload a couple of videos but they don’t upload properly. Also can fully collapse it with air in the shock but it’s working fine and has no binding. I’ll see if I can upload them again. //uploads.tapatalk-cdn.com/20200331/7a6c1055b0e2fc1e72cf842c1e55b75d.jpg

any weight loss in your conversion?

 

[GreyGhost]

any weight loss in your conversion?

I haven’t gotten that far yet. I have to pull the torsion springs out yet but I will be updating

 

[GreyGhost]

any weight loss in your conversion?

I just got time weigh everything and in total I saved about 4lbs might be a little less with a aluminum bracket but I’m not sure

 

[Rotax_Kid]

Nice work! I've built a few ground up skids, some based off of the T-motion or R-motion race skid. The two things I would look at with your design is motion at the end of the shock stroke and I'd be keeping on the bolt holes in the braclet if ots aluminum.

The shock at the end of its stroke with the Tmotion will lay flat. Moving it either way from its original position alters really whether the suspension moves to a rising or falling rate system. I've moved the position of that shocl slightly only to have it lay flat or overcenter.

With the bracket, I'd keep an eye on the holes in it. Fox air shocks have an exponential dampening curve compared to a cooil or torsion spring shock. I believe peak loads can be somewhere just under 2000lbs pending air pressure and shaft velocity. Where I'm going with this is watch those holes - if they are aluminum, there's a chance you may be on borrowed time before replacing necaise of either ovalized holes or cracks around those holes.

Keep innovating!

 

[GreyGhost]

Nice work! I've built a few ground up skids, some based off of the T-motion or R-motion race skid. The two things I would look at with your design is motion at the end of the shock stroke and I'd be keeping on the bolt holes in the braclet if ots aluminum.

The shock at the end of its stroke with the Tmotion will lay flat. Moving it either way from its original position alters really whether the suspension moves to a rising or falling rate system. I've moved the position of that shocl slightly only to have it lay flat or overcenter.

With the bracket, I'd keep an eye on the holes in it. Fox air shocks have an exponential dampening curve compared to a cooil or torsion spring shock. I believe peak loads can be somewhere just under 2000lbs pending air pressure and shaft velocity. Where I'm going with this is watch those holes - if they are aluminum, there's a chance you may be on borrowed time before replacing necaise of either ovalized holes or cracks around those holes.

Keep innovating!

Thanks for the input. I agree aluminium might fail over time so I’m trying to see what will be the best. As for the shock angle. I’m not sure I fully understand what you mean. It cycles and has no binding when it’s put through the motions. All of the original parts are in the same location and fictions the same as it did before (need to come up with better bushings that hold grease) and responds better then it did before

 

[Sean 011]

any updates on this ?

 

[GreyGhost]

any updates on this ?

Yes actually. I have a new design that I won’t be sharing just yet

 

[GreyGhost]

UPDATE TIME!!! Here’s the new design. Pretty self explanatory

Will have more pictures soon.