I like that WTB rim tape solution. I have in the past used the zipp 3zero moto and zipp xplor rim strips to do this, mostly because they were sitting around. I'm not a huge fan of those tbh as they are pretty rigid plastic and hard to get to sit flat and not impact the sealing of the rim tape.
His speed on that rock section at the top of Dark Crystal in the pouring rain is mind blowing. I know pro rider and yada yada but I can't ride it that fast when it's bone dry.
Then carry on.These have been rapidly gaining popularity in the XC world, with top places at the last Olympics. I think they now have a heavier...
Then carry on.
These have been rapidly gaining popularity in the XC world, with top places at the last Olympics. I think they now have a heavier duty version advertised for enduro. Has anyone seen them in EDR or DH events yet?
I used to do this but stopped as that extra mm is critical for mounting tires on Flow EX3 and Reserve rims. The new Schwalbe Radials...
I used to do this but stopped as that extra mm is critical for mounting tires on Flow EX3 and Reserve rims. The new Schwalbe Radials are not easy to mount either and basically require a Cush Core Bead Bro. (The previous gen radials weren’t bad though) I just check my spokes periodically and if ones broken, try to bend it around another or unscrew it from the nipple if I have my pliers. If all else fails I carry a Tubolito tube which is so small and light it could fit in your pocket. I don’t see them talked about much in the core MTB circles but Tubolitos are fantastic and have saved me from flats on tubed rental bikes more than once.
Out of curiosity, has it been with the Trail or gravity radials? I have found that I have pretty good luck getting the trail pro casing radials mounted on most rims, but I also run Kapton tape on my rims, so it's quite thin.
Anybody know about the validity of the claims of dual chain high pivots about better chain efficiency over one chain? Articles and such on the RMU and Phoenix and Demo 11 claim that it's more efficient or they say it's more efficient but they don't really say why or prove it. It seems fishy like theres still all the articulation on the first chain around the idler and then more articulation on the shaft between the first chain and second chain and then around the chainring?
Anybody know about the validity of the claims of dual chain high pivots about better chain efficiency over one chain? Articles and such on the RMU...
Anybody know about the validity of the claims of dual chain high pivots about better chain efficiency over one chain? Articles and such on the RMU and Phoenix and Demo 11 claim that it's more efficient or they say it's more efficient but they don't really say why or prove it. It seems fishy like theres still all the articulation on the first chain around the idler and then more articulation on the shaft between the first chain and second chain and then around the chainring?
I think the efficiency claims are vs. a high pivot/idler setup.
Anybody know about the validity of the claims of dual chain high pivots about better chain efficiency over one chain? Articles and such on the RMU...
Anybody know about the validity of the claims of dual chain high pivots about better chain efficiency over one chain? Articles and such on the RMU and Phoenix and Demo 11 claim that it's more efficient or they say it's more efficient but they don't really say why or prove it. It seems fishy like theres still all the articulation on the first chain around the idler and then more articulation on the shaft between the first chain and second chain and then around the chainring?
I know it's the highest spec model, but it's still a little refreshing to see a longer travel (enduro light?) complete bike that is around 30lbs. Nowadays, it seems like downcounty bikes are hovering around 30lbs and longer travel bikes are 35+. As someone who likes to do big days in the saddle, it's nice to see some new bikes attempt to keep the weight down.
Anybody know about the validity of the claims of dual chain high pivots about better chain efficiency over one chain? Articles and such on the RMU...
Anybody know about the validity of the claims of dual chain high pivots about better chain efficiency over one chain? Articles and such on the RMU and Phoenix and Demo 11 claim that it's more efficient or they say it's more efficient but they don't really say why or prove it. It seems fishy like theres still all the articulation on the first chain around the idler and then more articulation on the shaft between the first chain and second chain and then around the chainring?
Sorry that's what I was referring to if it wasn't clear.
Probably partly due to less active clutch on the dual chain setups. The lower chain line grows and shrinks a lot during suspension travel on high-pivot, single-chain setups, but the lower chain line on dual chain systems shouldn't change much, if at all under sus travel.
Anybody know about the validity of the claims of dual chain high pivots about better chain efficiency over one chain? Articles and such on the RMU...
Anybody know about the validity of the claims of dual chain high pivots about better chain efficiency over one chain? Articles and such on the RMU and Phoenix and Demo 11 claim that it's more efficient or they say it's more efficient but they don't really say why or prove it. It seems fishy like theres still all the articulation on the first chain around the idler and then more articulation on the shaft between the first chain and second chain and then around the chainring?
One reason would be that the cog on the RMU or Pivot is much larger than the average idler. I think the Pivot is a 24 tooth? The average idler cog is more like a 16 tooth. That makes a suprisingly large difference on pedaling efficiency.
And yes, as jones007 mentioned, it will also feel much better as the suspension cycles because the rear derailleur cage doesn't have to accommodate as much chain growth.
Anybody know about the validity of the claims of dual chain high pivots about better chain efficiency over one chain? Articles and such on the RMU...
Anybody know about the validity of the claims of dual chain high pivots about better chain efficiency over one chain? Articles and such on the RMU and Phoenix and Demo 11 claim that it's more efficient or they say it's more efficient but they don't really say why or prove it. It seems fishy like theres still all the articulation on the first chain around the idler and then more articulation on the shaft between the first chain and second chain and then around the chainring?
One reason would be that the cog on the RMU or Pivot is much larger than the average idler. I think the Pivot is a 24...
One reason would be that the cog on the RMU or Pivot is much larger than the average idler. I think the Pivot is a 24 tooth? The average idler cog is more like a 16 tooth. That makes a suprisingly large difference on pedaling efficiency.
And yes, as jones007 mentioned, it will also feel much better as the suspension cycles because the rear derailleur cage doesn't have to accommodate as much chain growth.
Yeah keen to try one. More efficient? Maybe. More like a normal drivetrain? Definitely.
I’ve been in a high pivot for several years and have been annoyed with shifting precision and noisy clutches. This seems like a nice way to remove these issues, and more chain wrap all around is another nice bonus
Anybody know about the validity of the claims of dual chain high pivots about better chain efficiency over one chain? Articles and such on the RMU...
Anybody know about the validity of the claims of dual chain high pivots about better chain efficiency over one chain? Articles and such on the RMU and Phoenix and Demo 11 claim that it's more efficient or they say it's more efficient but they don't really say why or prove it. It seems fishy like theres still all the articulation on the first chain around the idler and then more articulation on the shaft between the first chain and second chain and then around the chainring?
It's legit in principle. It's not articulation perse, it's the angle of rotation of the link that determines the losses. The bigger the chainring, the smaller the rotation.
Dual chains uses larger rings compared to the idler of a high pivot bike.
Actual values of losses of one system vs another would have to be calculated and/or measured.
I like that WTB rim tape solution. I have in the past used the zipp 3zero moto and zipp xplor rim strips to do this, mostly because they were sitting around. I'm not a huge fan of those tbh as they are pretty rigid plastic and hard to get to sit flat and not impact the sealing of the rim tape.
Jesse gives first impressions on the RMU night train and a few other components mentioned in the past few pages
https://youtu.be/Hz7ZJv9h15o?is=CYMhI8FHTbgYXrEQ
Can you give us a text summary?
Edit: Never mind, he provided his own.
He likes it.
His speed on that rock section at the top of Dark Crystal in the pouring rain is mind blowing. I know pro rider and yada yada but I can't ride it that fast when it's bone dry.
RockShox genie on spec stumpjumpers
https://www.specialized.com/us/en/s-works-stumpjumper-15-evo/p/4263535?…5479016-4263535
Also... painting your carbon stumpy to look metal is a choice.
Satin sandstone as a frame only option.
Looks like BERD spokes on the FW but not the rear.
Out of curiosity, has it been with the Trail or gravity radials? I have found that I have pretty good luck getting the trail pro casing radials mounted on most rims, but I also run Kapton tape on my rims, so it's quite thin.
Also, agreed. Tubolito is great. Small and light.
I should have read to the end before responding. 😉
Anybody know about the validity of the claims of dual chain high pivots about better chain efficiency over one chain? Articles and such on the RMU and Phoenix and Demo 11 claim that it's more efficient or they say it's more efficient but they don't really say why or prove it. It seems fishy like theres still all the articulation on the first chain around the idler and then more articulation on the shaft between the first chain and second chain and then around the chainring?
I think the efficiency claims are vs. a high pivot/idler setup.
Sorry that's what I was referring to if it wasn't clear.
I know it's the highest spec model, but it's still a little refreshing to see a longer travel (enduro light?) complete bike that is around 30lbs. Nowadays, it seems like downcounty bikes are hovering around 30lbs and longer travel bikes are 35+. As someone who likes to do big days in the saddle, it's nice to see some new bikes attempt to keep the weight down.
This bit is hilarious to me
My goodness that is tragic marketing. At least commit to the bit and change the sag markings...
From 2009:
not like a regular shock, its a cool shock
Probably partly due to less active clutch on the dual chain setups. The lower chain line grows and shrinks a lot during suspension travel on high-pivot, single-chain setups, but the lower chain line on dual chain systems shouldn't change much, if at all under sus travel.
Why does this remind me of Pinocchio
Before penis enlargement pump
After penis enlargement pump
I just saw your contribution to a discussion at the pink site. Are you 13 yo?
Relax bud
Oh look here's ballz criticising a penis joke
Sorry guys I couldn't help it.
One reason would be that the cog on the RMU or Pivot is much larger than the average idler. I think the Pivot is a 24 tooth? The average idler cog is more like a 16 tooth. That makes a suprisingly large difference on pedaling efficiency.
And yes, as jones007 mentioned, it will also feel much better as the suspension cycles because the rear derailleur cage doesn't have to accommodate as much chain growth.
Getting lectured about maturity by a guy named Ballz is a new one
Propain teasing a new/updated DH bike
My girlfriend says the same thing about me
Yeah keen to try one. More efficient? Maybe. More like a normal drivetrain? Definitely.
I’ve been in a high pivot for several years and have been annoyed with shifting precision and noisy clutches. This seems like a nice way to remove these issues, and more chain wrap all around is another nice bonus
It's legit in principle. It's not articulation perse, it's the angle of rotation of the link that determines the losses. The bigger the chainring, the smaller the rotation.
Dual chains uses larger rings compared to the idler of a high pivot bike.
Actual values of losses of one system vs another would have to be calculated and/or measured.
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