MTB Tech Rumors and Innovation

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Primoz
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Primoz 9/7/2021 6:54am
9/7/2021 6:54am Edited Date/Time 9/7/2021 6:56am
Yup, it's been discussed here quite a bit.

As for the freewheel, it doesn't change anything, the kickback stays the same. The benefit is the you can shift while coasting as the drivetrain still moves. But I'm still irked by the fact the cassette pushes the chain forward or pulls it through the derailleur. Which is tighter with modern clutch derailleurs, but still not the same as pulling it forward from the front over the cassette...

Plus, what happens if the chain derails itself? I mean other than instant drivetrain detonation.
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sspomer
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sspomer 9/7/2021 6:59am
9/7/2021 6:59am Edited Date/Time 9/7/2021 9:47am
re: front freewheel concept - as a kid i remember a friend's old Ross 10-speed had something like this. after some googling, i guess it's a shimano product called FF or Front Freewheel. i always thought was cool to shift while coasting on a 10-speed back in the day


LookinForIt 9/7/2021 7:25am
9/7/2021 7:25am
Seems like a fun way to go through chains more quickly
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Noeserd
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Noeserd 9/7/2021 7:34am
9/7/2021 7:34am
LookinForIt wrote:
Seems like a fun way to go through chains more quickly
I know a guy using that system and he tested it, there is not a single bit of wear change on chains because chain turns without any load in the system
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Primoz
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Primoz 9/7/2021 9:24am
9/7/2021 9:24am
Yeah, wear wise it should be more or less a non-issue.
Trocko
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Trocko 9/7/2021 9:40am
9/7/2021 9:40am
Wonder what would happen if you ran it without a fixed hub. I get you couldn’t shift at anytime but wouldn't it still help with pedal kickback?
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Mike_Scubadog 9/7/2021 1:21pm
9/7/2021 1:21pm
When the original sender came out did they not offer something that disengaged the rachet in the rear hub and achieve much the same result?
Batts
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Batts 9/7/2021 2:19pm
9/7/2021 2:19pm
sspomer wrote:
re: front freewheel concept - as a kid i remember a friend's old Ross 10-speed had something like this. after some googling, i guess it's a...
re: front freewheel concept - as a kid i remember a friend's old Ross 10-speed had something like this. after some googling, i guess it's a shimano product called FF or Front Freewheel. i always thought was cool to shift while coasting on a 10-speed back in the day


I had one of those!!!
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Beyond The Tape Podcast 9/7/2021 3:53pm
9/7/2021 3:53pm
sspomer wrote:
re: front freewheel concept - as a kid i remember a friend's old Ross 10-speed had something like this. after some googling, i guess it's a...
re: front freewheel concept - as a kid i remember a friend's old Ross 10-speed had something like this. after some googling, i guess it's a shimano product called FF or Front Freewheel. i always thought was cool to shift while coasting on a 10-speed back in the day


I forgot about these. changing front cogs was um, interesting
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sspomer
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sspomer 9/7/2021 5:13pm
9/7/2021 5:13pm Edited Date/Time 9/7/2021 5:14pm
graves on yeti ebike at EWS during shakedown laps, clearly trying to hide the important part LOL

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TheShortestCharles 9/7/2021 5:50pm
9/7/2021 5:50pm
Mike_Scubadog wrote:
When the original sender came out did they not offer something that disengaged the rachet in the rear hub and achieve much the same result?
That's "Project Dis\Connect", it was showcased at Eurobike 2016 but never used outside of that (to my knowledge)
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literally
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literally 9/7/2021 5:55pm
9/7/2021 5:55pm
sspomer wrote:
graves on yeti ebike at EWS during shakedown laps, clearly trying to hide the important part LOL [img]https://p.vitalmtb.com/photos/forums/2021/09/07/11419/s1200_graves.jpg[/img]
graves on yeti ebike at EWS during shakedown laps, clearly trying to hide the important part LOL

his water bottle?Tongue
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brash
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brash 9/7/2021 6:24pm
9/7/2021 6:24pm
that chain line doesn't look like it kinks into an idler.

Yeti's patent had two options, seems like they went with the "simpler" one.

Good find! Would shudder to think how pricey that bike will be.
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jonkranked
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jonkranked 9/7/2021 8:11pm
9/7/2021 8:11pm
sspomer wrote:
re: front freewheel concept - as a kid i remember a friend's old Ross 10-speed had something like this. after some googling, i guess it's a...
re: front freewheel concept - as a kid i remember a friend's old Ross 10-speed had something like this. after some googling, i guess it's a shimano product called FF or Front Freewheel. i always thought was cool to shift while coasting on a 10-speed back in the day


FFWs (front freewheels) have been in use on trials bikes for some time. i remember seeing one in person prior to 2010.
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jonkranked
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jonkranked 9/7/2021 8:12pm
9/7/2021 8:12pm
lickmycrinkle wrote:
Saw this fatty at Eurobike. It's not on their site, but was mentioned in their service manual a few months ago. [img]https://p.vitalmtb.com/photos/forums/2021/09/05/11411/s1200_WhatsApp_Image_2021_09_02_at_13.28.30.jpg[/img]
Saw this fatty at Eurobike. It's not on their site, but was mentioned in their service manual a few months ago.


do i spy... a 20mm axle?
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Velocipedestrian 9/7/2021 8:41pm
9/7/2021 8:41pm
sspomer wrote:
re: front freewheel concept - as a kid i remember a friend's old Ross 10-speed had something like this. after some googling, i guess it's a...
re: front freewheel concept - as a kid i remember a friend's old Ross 10-speed had something like this. after some googling, i guess it's a shimano product called FF or Front Freewheel. i always thought was cool to shift while coasting on a 10-speed back in the day


Beyond The Tape Podcast wrote:
I forgot about these. changing front cogs was um, interesting
Looks like a current shimano BB tool fitting. Guess those weren't in every '80s toolbox.
Primoz
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Primoz 9/7/2021 9:15pm
9/7/2021 9:15pm
Dual freehubs won't help with kickback past the point of having more slack before you engage them. Kinda like having a very low number of engagement points in your freehub to begin with.

I would hate to be the one changing idlers on an ebike... The wear on those (and the chain) should be insane.
bike_futurist 9/7/2021 10:45pm
9/7/2021 10:45pm
lickmycrinkle wrote:
Saw this fatty at Eurobike. It's not on their site, but was mentioned in their service manual a few months ago. [img]https://p.vitalmtb.com/photos/forums/2021/09/05/11411/s1200_WhatsApp_Image_2021_09_02_at_13.28.30.jpg[/img]
Saw this fatty at Eurobike. It's not on their site, but was mentioned in their service manual a few months ago.


jonkranked wrote:
do i spy... a 20mm axle?
The current 36 durolux is 20mm also

Setting up the Durolux caught me off in one key way. The fork is designed around a 100x 20mm through axel, which is going the way of the buffalo outside of downhill bikes. You can get different end caps for the plethora of compatible hubs, but it is definitely a factor that needs to be considered.

https://freehubmag.com/articles/sr-suntour-durolux
lickmycrinkle
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lickmycrinkle 9/8/2021 7:01am
9/8/2021 7:01am
lickmycrinkle wrote:
Saw this fatty at Eurobike. It's not on their site, but was mentioned in their service manual a few months ago. [img]https://p.vitalmtb.com/photos/forums/2021/09/05/11411/s1200_WhatsApp_Image_2021_09_02_at_13.28.30.jpg[/img]
Saw this fatty at Eurobike. It's not on their site, but was mentioned in their service manual a few months ago.


jonkranked wrote:
do i spy... a 20mm axle?
You do.

He told me about larger steerer tube too, but I couldn't eye it.
mamath7
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mamath7 9/8/2021 7:41am
9/8/2021 7:41am
lickmycrinkle wrote:
Saw this fatty at Eurobike. It's not on their site, but was mentioned in their service manual a few months ago. [img]https://p.vitalmtb.com/photos/forums/2021/09/05/11411/s1200_WhatsApp_Image_2021_09_02_at_13.28.30.jpg[/img]
Saw this fatty at Eurobike. It's not on their site, but was mentioned in their service manual a few months ago.


jonkranked wrote:
do i spy... a 20mm axle?
bike_futurist wrote:
The current 36 durolux is 20mm also [i]Setting up the Durolux caught me off in one key way. The fork is designed around a 100x 20mm...
The current 36 durolux is 20mm also

Setting up the Durolux caught me off in one key way. The fork is designed around a 100x 20mm through axel, which is going the way of the buffalo outside of downhill bikes. You can get different end caps for the plethora of compatible hubs, but it is definitely a factor that needs to be considered.

https://freehubmag.com/articles/sr-suntour-durolux
Weird, my 2021 durolux was 15*110
krabo83
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krabo83 9/8/2021 8:31am
9/8/2021 8:31am
sooo, does anyone of our hobby engineers spot anything new/special on the suspension designs compared to a normal 4bar horstlink? interested in where the switch infinity system is hidden since the logo is on the chainstays.
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mfoga
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mfoga 9/8/2021 8:40am
9/8/2021 8:40am
krabo83 wrote:
sooo, does anyone of our hobby engineers spot anything new/special on the suspension designs compared to a normal 4bar horstlink? interested in where the switch infinity...
sooo, does anyone of our hobby engineers spot anything new/special on the suspension designs compared to a normal 4bar horstlink? interested in where the switch infinity system is hidden since the logo is on the chainstays.
I’m guessing the switch it connected to that extra bar ring up from RT to the upper link. I have no real reason why just besides it kinda looks like it is there
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WheelBased
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WheelBased 9/8/2021 8:50am
9/8/2021 8:50am
mfoga wrote:
I’m guessing the switch it connected to that extra bar ring up from RT to the upper link. I have no real reason why just besides...
I’m guessing the switch it connected to that extra bar ring up from RT to the upper link. I have no real reason why just besides it kinda looks like it is there
The switch is hidden in the migration path of the bottom pivot on the center (vertical) link. See that migration path 60 in the center? That's the reversing migration path (Switch). Also note the rearward axle path with tangency line 74.



https://wheelbased.com/2021/06/11/vehicle-suspension-linkage-e-bike-gearbox-by-yeti/
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GUILLO
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GUILLO 9/8/2021 9:08am
9/8/2021 9:08am
And that other cable? For what it is?
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mitch160
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mitch160 9/8/2021 9:33am
9/8/2021 9:33am
Lacanuck24 wrote:
https://youtu.be/tjB1keL96PQ?t=984

@16:30 Eddie Masters mentions a "new rig."

What intel am I missing here?
guessing this was filmed at the first round of the ews where the new firebird 29 wasnt released yet.
SlickNick 9/8/2021 10:21am
9/8/2021 10:21am
GUILLO wrote:
And that other cable? For what it is? [img]https://p.vitalmtb.com/photos/forums/2021/09/08/11422/s1200_8A8107BB_B820_4184_B375_22012E18D529.jpg[/img]
And that other cable? For what it is?
The wheel speed sensor.
krabo83
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krabo83 9/8/2021 10:24am
9/8/2021 10:24am
WheelBased wrote:
The switch is hidden in the migration path of the bottom pivot on the center (vertical) link. See that migration path 60 in the center? That's...
The switch is hidden in the migration path of the bottom pivot on the center (vertical) link. See that migration path 60 in the center? That's the reversing migration path (Switch). Also note the rearward axle path with tangency line 74.



https://wheelbased.com/2021/06/11/vehicle-suspension-linkage-e-bike-gearbox-by-yeti/
does this mean the axlepath might be more rearward than on the current switch infinity models?
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