MTB Tech Rumors and Innovation

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5/17/2023 12:19am Edited Date/Time 5/17/2023 12:30am
MXBREWSK wrote:
 

gamux-sego-prototype-dh-bike-pinion-gearbox-gates-carbon-drive-belt-uci-approved

 

More from Gamix  

More from Gamix

57380A5B-7BDF-40E0-B27F-ADBFA9799D27

 

The all black Gamux seems to have a lot skinnier tubes on the front triangle than the grey one. Looks like a very different version! 

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FullSend
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5/17/2023 8:24am
Nzdinosaur wrote:
 Out at the weekend. New Ibis spotted in the park.... Couldn't get another pic as time was short

received 1740157533069623

 Out at the weekend. New Ibis spotted in the park....

Couldn't get another pic as time was short

That could be the first ever good-looking Ibis LOL

Jokes aside, I'm intrigued. If this is gonna be their dedicated race bike, I bet they massively changed the kinematics on this compared the previous DW-link (as found on the current Ripmo).

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DirtyHal
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5/17/2023 9:47am
I was also surprised by 54mm but I’d hope they’d make all the sizes.  Also we have no clue if the 54mm is what the team...

I was also surprised by 54mm but I’d hope they’d make all the sizes.  Also we have no clue if the 54mm is what the team actually uses. Could be different between riders.

I’m running 46mm with Ohlins and agreed, I like the stability and they feel more planted. I think it felt better on the Trek session, but now on the supreme v5, I may try the 51mm just to confirm.

This has been puzzling in the back of my mind all week but after doing a bunch of reading and hearing Chase Sexton talk on the Pulp Show this week about what he did to his Honda to make the front end more stable I think I understand why they would prefer this.  

By increasing the offset they are lengthening the bike including the front center to increase chassis stability.  We (the general public) generally think about just sizing up or getting reach adjust headsets but clearly Finn and Loic know exactly what reach measurement works for them and their bodies and don't want to change their body positioning on the bike (I think this is true for all top WC Pros, see Aaron Gwin and his 465mm magic reach #.)  This also makes sense from a riding technique perspective, you want to be centered on the bike as much as possible.

Regarding the reduced trail from the longer offset, I think they can make up for that via slackening the HTA (Someone should do the math on this) or maybe they prefer the quicker front end for line changes.

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WhoTookIt
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5/17/2023 11:56am

At 63.6º HTA a 46mm offset fork gives 119mm of mechanical trail, while a 54mm fork gives 111mm. To get the 54mm fork giving the same mechanical trail the HTA has to be dropped to 62.2º. As for the why, I think lengthening the front of the bike without affect reach is a pretty reasonable justification for the offset. I'd hate to live life as a modern stanchion bushing and there's not a lot more that can be done to move the front contact patch forward otherwise.

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therock911
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5/17/2023 1:39pm
dolface wrote:

Screenshot 2023-05-17 at 12.04.42 PM 0Screenshot 2023-05-17 at 12.04.32 PMScreenshot 2023-05-17 at 12.03.52 PM

surprised to not see Jesse on or testing flight attendant since he seemed to have a big involvement on the fox electronic shock

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Primoz
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5/17/2023 2:21pm

Surely that's a development shock sporting both a trunion and a standard eyelet mount from Vorsprung?

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Big Bird
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5/17/2023 2:48pm
Primoz wrote:

Surely that's a development shock sporting both a trunion and a standard eyelet mount from Vorsprung?

Why not keep both an option? As fickle and tradey/swappy as people seem to be these days, why not have both options for easier resale. it's not that much extra weight. #onelesspart#

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earleb
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5/17/2023 2:51pm
Primoz wrote:

Surely that's a development shock sporting both a trunion and a standard eyelet mount from Vorsprung?

The text with the image.

"Proto V48 getting some trail time under our engineer Dan, who might not actually be an engineer because he never starts sentences with "As an engineer....".

Standard eyelet and trunnion mount on the same reservoir bridge for testing. This is one part that will change significantly for production, to remove the redundant mounts, save weight, improve clearance and make it more aesthetically pleasing.

We haven't gone that route yet because the machining setup required is significantly more complicated and not something we want to have to revise while we're still testing function and locking down the damping geometry & configurations. This fairly blocky layout lets us make revisions much more easily for the sake of testing, but the production unit will not look anything like this.

Meanwhile, the stuff we can't show you is"

I'll speculate that it's twin tube with a bladder. The reservoir looks pretty small, twin tube with a smaller shaft diameter doesn't require as large a reservoir for fluid displacement.  

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Primoz
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5/17/2023 2:54pm
Primoz wrote:

Surely that's a development shock sporting both a trunion and a standard eyelet mount from Vorsprung?

Big Bird wrote:
Why not keep both an option? As fickle and tradey/swappy as people seem to be these days, why not have both options for easier resale. it's...

Why not keep both an option? As fickle and tradey/swappy as people seem to be these days, why not have both options for easier resale. it's not that much extra weight. #onelesspart#

Trunnion mount frames often don't have the space for it. 

2
brash
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5/17/2023 2:59pm

the whole point of trunnion was to jam a big stroke shock in a little hole.

sorry, I was meant to preface the post with "as an engineer (electrical)" as is customary in these situations.

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Big Bird
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5/17/2023 3:07pm
brash wrote:
the whole point of trunnion was to jam a big stroke shock in a little hole. sorry, I was meant to preface the post with "as...

the whole point of trunnion was to jam a big stroke shock in a little hole.

sorry, I was meant to preface the post with "as an engineer (electrical)" as is customary in these situations.

Thanks for outing yourself. Now I know how many grains of salt to trust you with. It would be a cool option though. #onemorepart#

1
5/18/2023 4:16am
I was also surprised by 54mm but I’d hope they’d make all the sizes.  Also we have no clue if the 54mm is what the team...

I was also surprised by 54mm but I’d hope they’d make all the sizes.  Also we have no clue if the 54mm is what the team actually uses. Could be different between riders.

I’m running 46mm with Ohlins and agreed, I like the stability and they feel more planted. I think it felt better on the Trek session, but now on the supreme v5, I may try the 51mm just to confirm.

DirtyHal wrote:
This has been puzzling in the back of my mind all week but after doing a bunch of reading and hearing Chase Sexton talk on the...

This has been puzzling in the back of my mind all week but after doing a bunch of reading and hearing Chase Sexton talk on the Pulp Show this week about what he did to his Honda to make the front end more stable I think I understand why they would prefer this.  

By increasing the offset they are lengthening the bike including the front center to increase chassis stability.  We (the general public) generally think about just sizing up or getting reach adjust headsets but clearly Finn and Loic know exactly what reach measurement works for them and their bodies and don't want to change their body positioning on the bike (I think this is true for all top WC Pros, see Aaron Gwin and his 465mm magic reach #.)  This also makes sense from a riding technique perspective, you want to be centered on the bike as much as possible.

Regarding the reduced trail from the longer offset, I think they can make up for that via slackening the HTA (Someone should do the math on this) or maybe they prefer the quicker front end for line changes.

I have to go back and listen to that Sexton interview!

im at actually in the middle of testing 46mm offset clamps with +5mm reach headset vs stock reach and 51mm clamps. I won’t know for a few weeks because the parks are just about to open. This is on Supreme V5. There is also +3mm, middle and -3mm chainstay settings so I’ll have that to throw in the mix.

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SteveClimber
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5/18/2023 4:50am
jazza_wil wrote:
 

7C080AAA-82B6-4BA0-B83C-44E33C23CD9A

 

Fred_Pop wrote:

Looks like a spherical bushing on the top eyelet.

Steve is a big fan of spherical bushings, and due to be a service centre, dislikes trunnion in general

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bulletbass man
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5/18/2023 5:55am
I was also surprised by 54mm but I’d hope they’d make all the sizes.  Also we have no clue if the 54mm is what the team...

I was also surprised by 54mm but I’d hope they’d make all the sizes.  Also we have no clue if the 54mm is what the team actually uses. Could be different between riders.

I’m running 46mm with Ohlins and agreed, I like the stability and they feel more planted. I think it felt better on the Trek session, but now on the supreme v5, I may try the 51mm just to confirm.

DirtyHal wrote:
This has been puzzling in the back of my mind all week but after doing a bunch of reading and hearing Chase Sexton talk on the...

This has been puzzling in the back of my mind all week but after doing a bunch of reading and hearing Chase Sexton talk on the Pulp Show this week about what he did to his Honda to make the front end more stable I think I understand why they would prefer this.  

By increasing the offset they are lengthening the bike including the front center to increase chassis stability.  We (the general public) generally think about just sizing up or getting reach adjust headsets but clearly Finn and Loic know exactly what reach measurement works for them and their bodies and don't want to change their body positioning on the bike (I think this is true for all top WC Pros, see Aaron Gwin and his 465mm magic reach #.)  This also makes sense from a riding technique perspective, you want to be centered on the bike as much as possible.

Regarding the reduced trail from the longer offset, I think they can make up for that via slackening the HTA (Someone should do the math on this) or maybe they prefer the quicker front end for line changes.

Pretty sure Finn ran 51 and loic 42 according to some article I read at some point.  Perhaps that changed.

I know Canfield has speced the 54 ohlins on bikes on the other hand.  And they certainly know how to make a bike that can ride fast.

 

to sum up my experience shortly a larger offset increases grip and how much the bike follows where the front wheel is pointed but suffers floppiness and loss of grip when rotating the bars.  A shorter offset decreases front wheel grip but vastly improves handling and consistency in feeling when moving the bars/sliding the front wheel.  This feeling is accentuated when using shorter and quicker handling stems and lower tire pressures.

3
26aintdead
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5/18/2023 6:38am
jazza_wil wrote:
 

7C080AAA-82B6-4BA0-B83C-44E33C23CD9A

 

Fred_Pop wrote:

Looks like a spherical bushing on the top eyelet.

Steve is a big fan of spherical bushings, and due to be a service centre, dislikes trunnion in general

They are no longer a service center, the service business was sold to S4 suspension

4
5/18/2023 12:54pm

Listening to the most recent B-Podcast that just got posted... Sounds like Intense is once again screwing over it's race team by delivering updated/new bikes way too (late) close to the start of the season. You can tell Dakota is pissed but trying to hold back a bit to not ruffle feathers. Getting a new bike 4 weeks before the first race. Which has kept him from going overseas to race/prep/test (budget also an issue--but said it's pointless to do that until you have the bike you're racing). 

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1
5/18/2023 5:33pm

do that many people buy intense?  Here they struggle to sell them, heavily discounted but the sale goes on by and nobody buys.

1
5/18/2023 6:00pm

do that many people buy intense?  Here they struggle to sell them, heavily discounted but the sale goes on by and nobody buys.

This new frame from intense is the most interesting one to me in the last few years that I’d like to try. I heard another rider say he wanted to try it.

Stewyeww
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5/18/2023 6:19pm

do that many people buy intense?  Here they struggle to sell them, heavily discounted but the sale goes on by and nobody buys.

They probably sell more bikes to the SoCal moto Bro's than other companies sell globally. 

11
5/19/2023 12:38am

Intense has to thank PulpMX for keeping them afloat I guess. BTW, how can they be so late, like... how long does it take to weld a frame together? Unless their engineers are behind with stress testing etc...   

6
5/19/2023 8:00am
Intense has to thank PulpMX for keeping them afloat I guess. BTW, how can they be so late, like... how long does it take to weld...

Intense has to thank PulpMX for keeping them afloat I guess. BTW, how can they be so late, like... how long does it take to weld a frame together? Unless their engineers are behind with stress testing etc...   

That's the big mystery. Intense touts their ability to build aluminum race bikes in house. But they've failed to deliver on time the past two seasons. It must be that Jeff is the only person able to build the frames and he's half checked out, working on other parts of the business and maybe going to Maui for the winter. No reason for the production of a couple race frames to be that slow considering a full shop on-site. Meanwhile Neko is getting steel front triangles from the UK and carbon rear ends from Asia in a shorter time period lol. 

 

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1
5/19/2023 9:06am
Intense has to thank PulpMX for keeping them afloat I guess. BTW, how can they be so late, like... how long does it take to weld...

Intense has to thank PulpMX for keeping them afloat I guess. BTW, how can they be so late, like... how long does it take to weld a frame together? Unless their engineers are behind with stress testing etc...   

If there was stress testing, they wouldn't need to change the rockers twice per weekend, and have a different looking one each event.......

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owl-x
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5/19/2023 12:14pm
Listening to the most recent B-Podcast that just got posted... Sounds like Intense is once again screwing over it's race team by delivering updated/new bikes way...

Listening to the most recent B-Podcast that just got posted... Sounds like Intense is once again screwing over it's race team by delivering updated/new bikes way too (late) close to the start of the season. You can tell Dakota is pissed but trying to hold back a bit to not ruffle feathers. Getting a new bike 4 weeks before the first race. Which has kept him from going overseas to race/prep/test (budget also an issue--but said it's pointless to do that until you have the bike you're racing). 

i read your comment before listening, but I got that too...

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dolface
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5/19/2023 4:12pm
Listening to the most recent B-Podcast that just got posted... Sounds like Intense is once again screwing over it's race team by delivering updated/new bikes way...

Listening to the most recent B-Podcast that just got posted... Sounds like Intense is once again screwing over it's race team by delivering updated/new bikes way too (late) close to the start of the season. You can tell Dakota is pissed but trying to hold back a bit to not ruffle feathers. Getting a new bike 4 weeks before the first race. Which has kept him from going overseas to race/prep/test (budget also an issue--but said it's pointless to do that until you have the bike you're racing). 

owl-x wrote:

i read your comment before listening, but I got that too...

I listened before reading the comment and got the same impression as y'all. Dak did amazing job of not throwing Intense under the bus...

5

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