Timbersled mountain horse Shock issues
- Thread starter Ryanexcr
- Start date
WHICH ONES AIR OR COIL
shock'n but ?
so what do you mean " blown out ". like seals gone, oil all over the place ? or ?
broke shafts....er what.
I have revalved several sets of the 012 fox shocks off MH kit, they are a little different breed than the fox shocks I generally see off the sleds.
top cap held in by snap ring.....pain the rebuilders azz but ok, rest fox threaded
floating piston is one piece plastic that you can't bleed...........pain in the azz
had to call fox for floating piston depth and gas psi and different and not sure why the odd numbers
took compression dampening out of the two sets I worked on to make better more compliant ride especially at low to modes speeds that most MH rider run at boon dock'n.
so what do you mean " blown out ". like seals gone, oil all over the place ? or ?
broke shafts....er what.
I have revalved several sets of the 012 fox shocks off MH kit, they are a little different breed than the fox shocks I generally see off the sleds.
top cap held in by snap ring.....pain the rebuilders azz but ok, rest fox threaded
floating piston is one piece plastic that you can't bleed...........pain in the azz
had to call fox for floating piston depth and gas psi and different and not sure why the odd numbers
took compression dampening out of the two sets I worked on to make better more compliant ride especially at low to modes speeds that most MH rider run at boon dock'n.
I have had one of mine come apart in 3 pieces when I UN bolted it spring, rod and cylinder so I assume all seals blew out. and a friend just blew out both of his also another friend just sent his in for r repair. The are not the air shock but coil spring. FOX
ooops
so the coil over MH s 12/13 shock I have seen have the bushing/seal cap end of the shock held in by a fairly light snap ring. In the past fox shocks had s screw in bearing/seal end cap.
I can see the rear suspsnsion rear shock coming apart from topping out, front shock rear suspension if it has a limiter strap likely to not give you problems.
The rear shock on rebound will bang aginst this snap ring and could easily cause this smap ring to fail.
Showa / Kayaba motorcyle shocks use the same basic setup, however a much larger, bigger diameter stiffer snap ring.
The real fix will be to put the MH rod and piston into the stronger style fox body with screw in cap and bleedable floating piston.
so the coil over MH s 12/13 shock I have seen have the bushing/seal cap end of the shock held in by a fairly light snap ring. In the past fox shocks had s screw in bearing/seal end cap.
I can see the rear suspsnsion rear shock coming apart from topping out, front shock rear suspension if it has a limiter strap likely to not give you problems.
The rear shock on rebound will bang aginst this snap ring and could easily cause this smap ring to fail.
Showa / Kayaba motorcyle shocks use the same basic setup, however a much larger, bigger diameter stiffer snap ring.
The real fix will be to put the MH rod and piston into the stronger style fox body with screw in cap and bleedable floating piston.
new fox
for sure lighter, thats the postiive
potentially just as effective, good
most likely though the goal is a simpler construction with fewer machined parts and less expensive to build. ( politically correct was to say cheaper ) Don't like to dis somebodays product, if they continue to come apart, I guess everbody else will.
for sure lighter, thats the postiive
potentially just as effective, good
most likely though the goal is a simpler construction with fewer machined parts and less expensive to build. ( politically correct was to say cheaper ) Don't like to dis somebodays product, if they continue to come apart, I guess everbody else will.
My rear shock looks like it was bottoming out against the snap ring and moved it enough to allow the snap ring to let go and lost all the fluid. Front shock is about to do the same thing. The plastic caps broke, rubber stopper is gone and the snap ring fell out but it hasn't started leaking yet. Took them into a gut who does rebuilds and he is going to try and get parts from fox and try to rebuld them and make a couple of mods. I will let you know what he finds out early next week. He thinks a stiffer spring may help also. I think one thing that they didn't take in to account is the extra weight we are all carrying on the tunnel with the gas, tools and bags etc. Wonder if thay may be playing a roll in the problems we are all having too.
i just went out in the shop and raised the rear and released the bolts on the rear coupling assembly on my 13 kit and there is still at least a 1/4 inch of travel left on the shock ,,so I dont think the problem is topping out , and if the bottoming rubber is gone from the shock, that is likley the problem, there is probably more travel left but the rubber snubber may be to tall and causing a false bottoming feeling and beating the seal head out at the same time? I think I may cut the snubber down a little and see if it feels different!I also looked at my 12 kit and it looks OK ,but I did move the spacers around to lower the rear to match my 13,,,IDK whats going on!but Im sure we will figure it on on here!
I also agree that the kits are probably set up a little on the soft side and should maybe take in to account for the extra fuel and bag weight, I think they are set up for around 190# rider not including extra gear that seems a little lite.
Another thing that can happen to a like this with a clip retained seal head is the following:
as the shock shaft velocity increases the cap can be sucked down into the damper, then as the direction changes, it pounds against the clip. Eventually the clip can't take it anymore and lets go.
The fix for this is a screwed in cap, or dual circlip setup like Ohlins use.. Or more nitrogen pressure.
I think in the whoops the velocities these shocks see is astronomical. Think about the way it pivots around while uncoupled. It's fairly obvious to me that this skid setup is NOT optimized for whooped out performance. It works awesome off trail. I'm willing to go slower on whoops to get that nice soft compliant ride off trail that I love.
Hopefully I don't blow out my shocks, or I'll be saying something different.
Jon
as the shock shaft velocity increases the cap can be sucked down into the damper, then as the direction changes, it pounds against the clip. Eventually the clip can't take it anymore and lets go.
The fix for this is a screwed in cap, or dual circlip setup like Ohlins use.. Or more nitrogen pressure.
I think in the whoops the velocities these shocks see is astronomical. Think about the way it pivots around while uncoupled. It's fairly obvious to me that this skid setup is NOT optimized for whooped out performance. It works awesome off trail. I'm willing to go slower on whoops to get that nice soft compliant ride off trail that I love.
Hopefully I don't blow out my shocks, or I'll be saying something different.
Jon
Well I hope that Timbersled at least would have some replacements on the shelf to purchase but they do not and it is at least 3 weeks to get one right now because they are on back order. 
That in my book sucks, I have a friend going on a 4 day trip in the middle of Februaryy and might not be able to ride with us because both his shocks are blown out and he has no way of getting any sort of replacements. 
Usually getting parts from Timbersled has been great not sure what the deal is with shocks.
That in my book sucks, I have a friend going on a 4 day trip in the middle of Februaryy and might not be able to ride with us because both his shocks are blown out and he has no way of getting any sort of replacements. Usually getting parts from Timbersled has been great not sure what the deal is with shocks.
shock'n
get a hold of any shock rebuilder, they should be able to put together a shock for you.
I don't have enough junk parts to make more than a couple of shocks, but the MH parts will go right into the standard Fox / ACT body/endcap/ etc.
If you were here in town, walk in, could tell you in a few minutes what its going to take to be riding. I don't have a mtn horse shock sitting here any more, can't really tell you what can be done. PM me with shock eye to eye length and overall body length though and I can tell you what can be done for how much $$.
I would be reluctant to put the stock config back together if it cost much ( fox parts it will ), just going to come apart again.
get a hold of any shock rebuilder, they should be able to put together a shock for you.
I don't have enough junk parts to make more than a couple of shocks, but the MH parts will go right into the standard Fox / ACT body/endcap/ etc.
If you were here in town, walk in, could tell you in a few minutes what its going to take to be riding. I don't have a mtn horse shock sitting here any more, can't really tell you what can be done. PM me with shock eye to eye length and overall body length though and I can tell you what can be done for how much $$.
I would be reluctant to put the stock config back together if it cost much ( fox parts it will ), just going to come apart again.
Yes I agree so I think my friend is working on getting a different manufacture involved and getting a good solution for this. Thanks
