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Discussion Starter · #1 ·
Hi all, I'm a 170 lbs biker and I'm thinking to improve the rear travel of my 2004 stumpy fsr pro from 100 mm to 130 mm (yes, I'm based in Europe:) ) with a BETD linkage.
Apart from the advantages of having more rear travel, I'd like to know the feeling and experience of someone who already did the same upgrade in terms of shock behaviour (plushness, bobbing...) after the replacement of the specy linkage with the BETD and using it with the 130 mm rear travel.
Thank you in advance!
 

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It improved the ride alot for me, especially on rocky down hills etc; raises the BB an inch too which is a big difference. The only drawback is you will need to to greatly increase air pressure in the shock to eliminate excess bob(Septune) I weigh 140 pounds and my pressure is at about 250 psi. If you can do this I recommend it, it transforms the bike into a better handling one on techy terrain, more stable for me anyways.
 

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Discussion Starter · #4 ·
Iceman69 said:
It improved the ride alot for me, especially on rocky down hills etc; raises the BB an inch too which is a big difference. The only drawback is you will need to to greatly increase air pressure in the shock to eliminate excess bob(Septune) I weigh 140 pounds and my pressure is at about 250 psi. If you can do this I recommend it, it transforms the bike into a better handling one on techy terrain, more stable for me anyways.
Wow, 250 psi is a big pressure: which was the "normal" pressure for you with the original linkage? And, what about differences (if any) in uphill sections?
 

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what about the head tube angle? will it change when you put it in the 130mm place?

if it does change will a 130 mm fork undo these changes (head tube angle steeper) ?

thanks
 

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maurocif said:
Wow, 250 psi is a big pressure: which was the "normal" pressure for you with the original linkage? And, what about differences (if any) in uphill sections?
True the pressure increase is dramatic, the normal pressure for me on the stock linkage was around 160-170 I believe. However the schock has a maximum limit of 300psi and it has been working fine for a few months, so far. Uphill is fine, no change, it goes uphill as fast as before. One thing I noticed immediately after changing the link was under hard braking on steep rocky descents, there was no brake jack period, more so than the stock link, alot more.
 

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jappo said:
what about the head tube angle? will it change when you put it in the 130mm place?

if it does change will a 130 mm fork undo these changes (head tube angle steeper) ?

thanks
I am using a Talas RL at 130mm front travel. The increase inch in rear will steepen your front which for me works fine, faster steering. I was contemplating swapping the fork with something 150mm travel to balance it out but honestly its no big deal, my ride has improved so I will keep as is.
 

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Discussion Starter · #8 ·
Thank you very much for this information, they're exactly what I was looking for.
Just one more question; my current fork is a Marzocchi Marathon XC 100-120mm, now working 110mm of travel: do you think I can keep it with 120mm travel, or should I swap it for a longer travel fork?
 

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maurocif said:
Thank you very much for this information, they're exactly what I was looking for.
Just one more question; my current fork is a Marzocchi Marathon XC 100-120mm, now working 110mm of travel: do you think I can keep it with 120mm travel, or should I swap it for a longer travel fork?
You could do it but will you like the feel of it? thats gonna depend on you and your riding style. It could be a bit too steep for your liking.
 

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I have a link on order (2 months ago already :-( ) for my FSR2004. I already upgraded the fork to a Talas 90-130mm, which I now run at 120mm. I like to run a slightly slacker headangle. What you can do to compensate the slightly steeper headangle with your 120mm fork is to run a 2.35/2.4 front tire and a 2.1/2.25 in the back.
 

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djska said:
I have a link on order (2 months ago already :-( ) for my FSR2004. I already upgraded the fork to a Talas 90-130mm, which I now run at 120mm. I like to run a slightly slacker headangle. What you can do to compensate the slightly steeper headangle with your 120mm fork is to run a 2.35/2.4 front tire and a 2.1/2.25 in the back.
Indeed, the previous year specialized resolution 2.3 tire in front was awesome for that, I swear that tire is the tallest for its size and casts a shadow to boot;)
 

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Iceman69 said:
True the pressure increase is dramatic, the normal pressure for me on the stock linkage was around 160-170 I believe. However the schock has a maximum limit of 300psi and it has been working fine for a few months, so far. Uphill is fine, no change, it goes uphill as fast as before. One thing I noticed immediately after changing the link was under hard braking on steep rocky descents, there was no brake jack period, more so than the stock link, alot more.
what's a brake jack period?
 

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Where can I get one??

I have the same model stumpy, and back when it was new I looked into the BETD link and couldn't find them for the '04. Where can you get them, and roughly what do they cost?

This is a really really dumb question, but do you have to change the original shock or can it just 'go' to 130mm?

Thanks.
 

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I just received my BETD link last week. Mine's for a 01 FSR, so it's not the same link, but doing the same job.

The machining is excellent - tolerances are very tight. It bolted right back in place using my exisiting shock. I did have a problem on installation, though. When I started airin gup my shock, the increase in travel caused my rear derailleur cable to become MUCH too short!!!! Make sure you have a new cable and housing ready to go!

I haven't had the chance to get out and really test ride the new setup. Kinda hard with a 23 month old and a 6 week old to get out much ;), but between the linkgae and new fork (revelation air u-turn) curbs have been made almost non-existant.


EDIT: Got the chance to give it a "quick" ride yesterday. 11.5mi, all on singletrack. GET THIS LINKAGE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Stiffer feeling all the way around. Shoot, it even made the shock behave better! I can now tell a VERY distinct difference between all 3 setting on my RP3. Adding in the new fork and 7" rotor, it feels like a whole new bike. Inspies a lot more confidence it bombing downhill and hitting small jumps. I am starting to think I need to get some knee and elbow pads now!
 

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I see from the photos the interferance when reversed. But is the link hitting the frame when installed normally?

Please keep us updated on what BETD has to say.

jw

djska said:
I received my link and put some photo's on http://picasaweb.google.com/RvdOooo/BETDLink.

Works fine and looks very robust but I do seem to have an issue with the link hitting the seat tube when bottoming out hard (see arrow on 6th picture). I sent an email to BETD about this...

Like you on the photo's I also tried to reverse the link. Definite answer: not possible.
 

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Gronked said:
I have the same model stumpy, and back when it was new I looked into the BETD link and couldn't find them for the '04. Where can you get them, and roughly what do they cost?

This is a really really dumb question, but do you have to change the original shock or can it just 'go' to 130mm?
I ordered the FSR XC 05 100mm version for my FSR 04 100mm. The link changes the shock leverage without having to change the shock.
 

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maurocif said:
Thank you very much for this information, they're exactly what I was looking for.
Just one more question; my current fork is a Marzocchi Marathon XC 100-120mm, now working 110mm of travel: do you think I can keep it with 120mm travel, or should I swap it for a longer travel fork?
You can just see how it rides with your current fork set at 120mm, then plan a fork upgrade if it's too steep. Do some checking on a-c measurements of forks you might like. One option might be an '07 AMSL fork, since they have ATA.

I would want to raise the front at least as much as the rear, but it's nice if the fork is able to drop for climbs.
 
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