My enduro is getting a bit old and I could do with something lighter and longer, I want to keep all my components and just swap the frame. The forks have a travel reduction for climbing so I know it would go uphill just as well as a std build.
I reckon a stumpy is probably all I need frame wise, as I love my HT too, but would still like to run my Lyriks. Warranty wouldn’t be a consideration as I would be getting it second hand if it turns out to be viable.
I run 150 Revelations on a 2010 Stumpjumper and its fine, but you do need the u-turn/dual position. I went from a Pitch to a SJ for the same reasons and I enjoy the lighter trail bike feel over the burlyness of the old Pitch. I ride Lakeland passes on it no problem but I’m no air merchant…
Ha, I’m certainly not worried about metal fatigue. I could do with something that’s a bit more upto date design wise that pedals better and is lighter and longer. New shape Enduros and Remedys are a bit pricey and quite rare as frames so I have come up with the genius idea of the Stumpy.
Having a look at the numbers it looks like the Stumpy Evo is an almost identical frame to the std stumpy but the shock has a slightly longer stroke giving it an extra 5mm of travel. All the angles look very similar between the too leading me to believe that its just the extra height of the forks slackening it out a bit.
I’m sure I’ve read the current Stumpy FSR and Evo are the same frame just the Evo has different shock & linkage with 10mm longer forks to give the slacker geo.
A Superlight isnt really equivalent to a Stumpy tho Hora. It’s more like a Camber or even an Epic. Stumpys come as standard with 140mm so all I would adding is essentially the width of my thumb under the front end.
There is a 1 degree difference in head angle and seat angle. An extra 10mm travel and bigger front tyre will account for that. If it was a different front triangle they would have kept the seat angle the same so it climbed just as well.
The rocker on the evo does look slightly different, this is probably to change the way the shock feels making it more or less progressive.
If you’re looking at large frames (or medium for that matter) you would have to have been smoking the crackpipe for a long time to not buy a 29″ Evo. It’s another world from the 26″ Evo, even with the 160mm 34 that I currently ride.
Don’t get me wrong the 26″ is a great bike but I think it’s a little too steep stock and needs the Fox 34. I’ve done a year on it and it’s been good in all types of races but the 29″ Evo easily out climbs and descends it and I bet has about 20% more grip. It isn’t just because of the wheels, it’s the geometry too.
I Ache, investment in 26″? You have no idea! I’ve got new 240s on Arches, 2012 26″ 32 and 34 forks. I’m the most anti 29″ marketing guy out there but after a couple rides on the Evo 29″ a 26″ isn’t an option if you want to go fast.
I would want to try and work out what it will do the BB height as raising the front end will raise the BB too which will affect stability. Whether its enough to matter for you to decide.
I_Ache – Member
A Superlight isnt really equivalent to a Stumpy tho Hora. It’s more like a Camber or even an Epic. Stumpys come as standard with 140mm so all I would adding is essentially the width of my thumb under the front end.
Bit more – the difference between a 140mm 32mm fork and a 160mm 36 fork is more than 20mm – differences in chassis add another inch or so, you’re adding more like 45-50mm.
“Stumpys come as standard with 140mm so all I would adding is essentially the width of my thumb under the front end.”
Your thumb is 34mm wide?
2010 – 2012? 26″ wheel SJer FSR’s came with QRdropout Fox 32 140mm which are 511mm Axle-Crown irrc
Lyriks, Domain, (Totem,) Fox 36 @ 160mm are 545mm
Not sure on Fox 34 @ 160mm
“wouldn’t have thought the bb would move much but its a good point”
I’d have thought the shortened reach/front centre measurement would be more of an issue
Hmmm hadn’t thought about the difference in chassis height. Still it might be something worth pursuing if I can get a cheap enough frame. I might even strip the paint off as I have been getting so much love for how my Enduro looks recently.
Depending on which year SJ Evo the main differences have been things like tapered headtube pressfit BB 142 bolt thru rear and longer travel. The additonal rear travel and slacker angles is from a different shock that is shorter and has a longer stroke – by a few mm on both, plus the longer front forks.
Not sure if when it went from 145 to 150 rear whether they changed the linkage as well?
I’ve got a 2011 SJ Evo RP23 on my 2010 SJ and it drops the BB and slackens the head angle and adds a little more travel. Its a straight swap and fairly cheap to do. I’ve also got 150 Revelation Dual Position RC3 forks on the front and a 10mm rear axle to clamp up the rear. And i find it a great bike, really capable.
This is it with the old shock triad on it thats got lock out at the Coed y Brenin enduro.
where did you get the shock from Tomasz? One of the things I worry about with a stumpy is the shock. Not sure a brain would suit me and I really like the 3 position compression switch on my current shock.
@I Ache I bagged the RP23 shock off here for a mere £65. But mine came with a non-brain Triad shock which is pretty good and has open, pro-pedal and lock out.
@Renton yes my flaky memory says it was you! Its all holding up well enough although the bearings were shot in 4 months of Lakeland abuse! But its all good and I am enjoying riding it. Its definately more playful as a trail bike than the Pitch it replaced, just not quite so burly and stable on the big stuff – but you can’t have it both ways – its either going to be long stable heavy and planted or playful light short and not quite as stable and planted.