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- Jan 7, 2007
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- 110
- Location
- South Wales, UK
can you buy a new bottom, like the one on ebay. 270564518673
Ohlins TTX44 shock
- Thread starter bushmechanic
- Start date
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yes there must be a lower end that fits the TTX and the husaberg.
I don't know for sure or the #PN.
the guys selling that shock on ebay would probably know or any Ohlins dealer could find out the info if they wanted to.
FWIW fitting the shock is the easy bit
I don't know for sure or the #PN.
the guys selling that shock on ebay would probably know or any Ohlins dealer could find out the info if they wanted to.
FWIW fitting the shock is the easy bit
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- Jan 7, 2007
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- 110
- Location
- South Wales, UK
what about the valving etc, i have read that a ktm shock has a different rate.
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- Joined
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- Messages
- 3,871
- Location
- south east WA Australia
- Joined
- Jun 13, 2007
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- 3,871
- Location
- south east WA Australia
so the last build of this shock worked so well I didn't open it up till now..
thats 4 years
oil was stuffed
these are the modifications, still no sign of degradation from the oil or heat, epoxy is good stuff
clevis in more detail
thats 4 years
oil was stuffed
these are the modifications, still no sign of degradation from the oil or heat, epoxy is good stuff
clevis in more detail
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this is how i bleed the shock
Ive used the vacuum setup at work and couldn't tell if it was any different to hand bleeding, definitely quicker but not better IMHO.
main thing to watch is that you squeeze the bottle with its tap closed when the shaft is pushed in... otherwise air is drawn in past the rod seal.
i have the shock stacks and valve simulation graphs somewhere .. will have a look
Ive used the vacuum setup at work and couldn't tell if it was any different to hand bleeding, definitely quicker but not better IMHO.
main thing to watch is that you squeeze the bottle with its tap closed when the shaft is pushed in... otherwise air is drawn in past the rod seal.
i have the shock stacks and valve simulation graphs somewhere .. will have a look
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graphs showing what i changed with the smaller rebound ports and the lift limiting backers
dark blue line is the new curve
light blue is the old curve
its softer initially .. more compliant over small stuff and much stiffer at higher velocity .. more controlled on bigger stuff
dark blue line is the new curve
light blue is the old curve
its softer initially .. more compliant over small stuff and much stiffer at higher velocity .. more controlled on bigger stuff
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probably ... i will check
i installed a rebound separator valve this time and softened the comp stack
not sure if i like it ......
i installed a rebound separator valve this time and softened the comp stack
not sure if i like it ......
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valving simulations attached
main comp stack
38 0.25
38 0.25
38 0.25
38 0.25
38 0.25
38 0.25
38 0.25
38 0.25
38 0.25
38 0.25
38 0.25
25 0.3
26 0.3
28 0.3
37 4
external comp stack
22 0.3
22 0.3
22 0.3
21 0.25
20 0.25
18 0.25
16 0.2
14 0.2
12 0.2
9 4
main comp stack
38 0.25
38 0.25
38 0.25
38 0.25
38 0.25
38 0.25
38 0.25
38 0.25
38 0.25
38 0.25
38 0.25
25 0.3
26 0.3
28 0.3
37 4
external comp stack
22 0.3
22 0.3
22 0.3
21 0.25
20 0.25
18 0.25
16 0.2
14 0.2
12 0.2
9 4
Thanks!
This is very interesting to me, since I have been testing a bit on my PDS with different damping force curves.
As a stocker the shock came with a very slightly digressive damping curve, meaning relatively stiffer damping force factor at low shaft speeds than higher speeds, as you know.
My first attempt was to sort of straighten the damping force curve to a more or less straight line as I thought it would be interesting to see whether I like or not. Could not tell that much of difference though so I moved on to the next phase. Maybe the biggest advance was a more plush ride than earlier.
The second attempt was to move on to a very slightly progressive curve. I was curious if a progressive damping would be a must in a shock also as it's quite common in forks. This testing is still a work in progress as I noticed my external reservoir leaking nitrogen to shock side and it ruined the shock performance naturally. First impressions which I had were that the ride was very plush indeed but lacked hugely control as the shock easily used quite a big portion of its travel, specially in slow movement whoops and similar.
I don't have the graphs here right now, but I must say these all three versions were more or less different versions of basically straight line, only minor differences in curves, but certainly noticeable by testing.
As I watch your damping graph I differs quite much as a clearly digressive curve and I find it very interesting. How would you describe the shock performs with that kind of damping curve?
This is very interesting to me, since I have been testing a bit on my PDS with different damping force curves.
As a stocker the shock came with a very slightly digressive damping curve, meaning relatively stiffer damping force factor at low shaft speeds than higher speeds, as you know.
My first attempt was to sort of straighten the damping force curve to a more or less straight line as I thought it would be interesting to see whether I like or not. Could not tell that much of difference though so I moved on to the next phase. Maybe the biggest advance was a more plush ride than earlier.
The second attempt was to move on to a very slightly progressive curve. I was curious if a progressive damping would be a must in a shock also as it's quite common in forks. This testing is still a work in progress as I noticed my external reservoir leaking nitrogen to shock side and it ruined the shock performance naturally. First impressions which I had were that the ride was very plush indeed but lacked hugely control as the shock easily used quite a big portion of its travel, specially in slow movement whoops and similar.
I don't have the graphs here right now, but I must say these all three versions were more or less different versions of basically straight line, only minor differences in curves, but certainly noticeable by testing.
As I watch your damping graph I differs quite much as a clearly digressive curve and I find it very interesting. How would you describe the shock performs with that kind of damping curve?
Last edited:
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its very good for my conditions, sand and high torque/grip
the biggest improvement with this idea is on rebound
what I was trying to achieve is to harness the idea of the time delay component of suspension fiddling
the idea is that the HS part of the damping curve is more in play when the wheel moves for a long time .. long stroke HS like landing a jump
and the LS/MS is for the shorter duration movements
it works very well but i think it could sometimes be a problem for compression if you hit a huge rock at very high speed since then the damping may be too stiff.
for rebound however the HS or long duration long stroke movement occurs when the wheel is not in contact with the ground so you can apply the concept to all bikes.
the one situation where it may cause a problem in the rebound circuit is in someone like chad reeds bike at full speed over hardpack stutters or whoops in an SX environment
its a lot more interesting that copying someone elses stacks off thumpertalk for sure
the biggest improvement with this idea is on rebound
what I was trying to achieve is to harness the idea of the time delay component of suspension fiddling
the idea is that the HS part of the damping curve is more in play when the wheel moves for a long time .. long stroke HS like landing a jump
and the LS/MS is for the shorter duration movements
it works very well but i think it could sometimes be a problem for compression if you hit a huge rock at very high speed since then the damping may be too stiff.
for rebound however the HS or long duration long stroke movement occurs when the wheel is not in contact with the ground so you can apply the concept to all bikes.
the one situation where it may cause a problem in the rebound circuit is in someone like chad reeds bike at full speed over hardpack stutters or whoops in an SX environment
its a lot more interesting that copying someone elses stacks off thumpertalk for sure
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- Jun 13, 2007
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its very good for comparisons on in the same shock or the same set of forks and saves a lot of time
some people have found discrepancies in comparing completely different valve designs
its a good simulator package
some people have found discrepancies in comparing completely different valve designs
its a good simulator package
Thanks Bushie. Comparative is all I am looking for.
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