What did you do to your EBike this week?

[Amber Valley Guy]

What??? Linkglide is normal drivetrain, wheel changes are same as any other Shimano systems, just remember to release the cage lever and pull the cage away when you instal the wheel. I have 10 and 11 speed Linkglides in family. Sram is more clever because you can lock the cage, I have also GX on my Bullit.

After looking at it, it's the wheel speed sensor pick up that's causing the problem compounded by the LG mech having less rear and up movement than the previous SRAM mech. I've posted pictures in the Linkglide thread.

Anyone managed to move the wheel speed sensor to another position from the inside of the chain stay, to say the disk?

 

[RustyMTB]

Sorted the weirdest mechanical I've ever had. Out on a night ride last week, I ran over a fallen branch bits of which wrapped itself in the cassette. After I cleared it out, the bike was skipping in eighth gear. I couldn't see any damage to the chain or the cassette in the stand but turns out a bit of twig had got under the chain which forced it in between the sprockets.

This caused the chain to sit high on the sprocket & skip. It was wedged in so hard, it took me fifteen minutes to get it all out with a pick!

 

[Binhill1]

Sorted the weirdest mechanical I've ever had. Out on a night ride last week, I ran over a fallen branch bits of which wrapped itself in the cassette. After I cleared it out, the bike was skipping in eighth gear. I couldn't see any damage to the chain or the cassette in the stand but turns out a bit of twig had got under the chain which forced it in between the sprockets.

This caused the chain to sit high on the sprocket & skip. It was wedged in so hard, it took me fifteen minutes to get it all out with a pick!

I get that a lot never that bad though . Broken 3 derailleurs as well picking up twigs.

 

[alleeex]

Added a sticker to reflect my habit of massively over jumping everything to flat

 

[irie]

Yeah, when small mostly dry twigs get trapped in the cassette they break up and get wedged in. When changed tyres couple of months ago couldn't believe how much organic debris had got wedged between the sprockets. Had to take the cassette to pieces to get all the shit out.

 

[Stihldog]

The ole twig-in-the-transmission event . I think there’s a science to avoid that. Broke 2 NX derailers after riding over and pushing the small branch through. Cadence rpm changes instantly, then there’s a long walk home.

Properly riding over a twig is exhausting, but if you roll over it just right …well, that’s were the science comes in.

 

[RustyMTB]

Alan Millyard solved all this twig nonsense years ago.

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[Binhill1]

Alan Millyard solved all this twig nonsense years ago.

​

Quite interesting that I wonder how heavy it was

 

[Stihldog]

Alan Millyard solved all this twig nonsense years ago.

​

Looks north of 60lbs. Interesting ideas though.

 

[RustyMTB]

It was built specifically to race DH. Things change but the heavier the better is a longstanding philosophy in racing.

 

[Stihldog]

True…but not too heavy.

It was built specifically to race DH. Things change but the heavier the better is a longstanding philosophy in racing.

and that’s where R&D comes in…$$$$$

 

[RustyMTB]

It was probably solving a problem that didn't really need fixing. The principle innovation, enclosing a drive train so it's protected from external contamination suits trail bikes much better than DH rigs, it being the main benefit of gearbox bikes. I imagine this is why no one else picked it up as a thing to develop. Obvs, DH guys do lose chains & break mechs but in gravity racing, it's still possible to win in those circumstances eg. Aaron Gwin, famously & the fact that Saint hasn't been revised in years indicates teams are happy with what they have. Pretty sure the famous Honda DH bike amounted to the same thing too.

Either that or big drivetrain put the frighteners on him.

 

[Mik3F]

Fitted my Xmas presents - A Burgtec Cloud Saddle and the Axs POD rocker upgrade

 

[steve_sordy]

I thought that I'd fit my Muc-off Big Valves today (Xmas present from Secret Santa). It was the hybrid that fits in place of Presta but has a Schrader end cap. It didn't go as smoothly as I expected.

Front wheel off, air out, one side of the tyre released, old tubeless valve out. All without spilling a drop of sealant. So far so good. New valve in, collar tightened up, bead popped into place. Got out my "Airshot" tubeless tyre inflator. All ready for inflation!

That is when I discovered that the fittings that came with my "Airshot" didn't work with a Schrader valve.
Either they had gone missing in the years that I'd had the "Airshot", or had never been there from new. I tried my track pump, but that could not deliver enough air flow to pop the bead into place. I tried my Ryobi air compressor that works fine on car tyres, but it does not generate enough flow either, not being able to overcome the air leaking around the bead.

So, it's a visit to my LBS in the next town tomorrow to see if they have an appropriate fitting.

Before I started, I should have checked that when I removed the Presta fitting from the "Airshot" that it left a Schrader fitting underneath, it didn't. That is what assuming did for me. Don't be me!

 

[Mikerb]

Maybe a little tip to help others?
I had issues with a rear tyre (tubeless) losing air slowly........but fast enough not to guarantee being set the night before a ride.
Over time I had removed the presta valve to clean off sealant....then changed the valve. What I did not notice was that removing the valve had very slightly disturbed the valve stem .......the air loss was there and more than likely also the reason the presta insert became clogged despite keeping the valve away from the bottom of the wheel when parked.
Once I realized the true cause of my problem I retightened the valve stem. Result......10 days and 2 rides and the tyre has not lost 1 psi!
Moral of the story.....if you remove a presta insert hold the valve stem with pliers whilst doing so, to prevent any movement.

 

[Stihldog]

If all that fails, try installing 2 or 3 tubes rather than going tubeless. I heard that it works sometimes. There’s an entire thread dedicated to the idea .

 

[Binhill1]

If all that fails, try installing 2 or 3 tubes rather than going tubeless. I heard that it works sometimes. There’s an entire thread dedicated to the idea .

I've managed a lot of years with tubes and can't remember the last time I had a pinch flat. 2 punctures a year I can cope with my mate. I don't need any more grip and I'm more than happy with my riding skills. The time I had tubeless I honestly didn't feel any difference. 38 years riding now I'm doing OK . Rant over

 

[Stihldog]

I've managed a lot of years with tubes and can't remember the last time I had a pinch flat. 2 punctures a year I can cope with my mate. I don't need any more grip and I'm more than happy with my riding skills. The time I had tubeless I honestly didn't feel any difference. 38 years riding now I'm doing OK . Rant over

The last time I used a tube was for a sling to support my arm when I broke my clavicle. The guy who found me carried a 27” tube.

The Doctors were impressed

 

[steve_sordy]

..............

So, it's a visit to my LBS in the next town tomorrow to see if they have an appropriate fitting.

................ Don't be me!

The LBS is having Xmas off, back on Fri 3rd Jan'25.
If I want to go for a ride before then, I'm going to have to refit the old valve!
Edit: I just had a thought; the LBS might not have the right bit in stock!!
............... Don't be me!

 

[Stihldog]

The LBS is having Xmas off, back on Fri 3rd Jan'25.
If I want to go for a ride before then, I'm going to have to refit the old valve!
Edit: I just had a thought; the LBS might not have the right bit in stock!!
............... Don't be me!

I don’t think I’ll go with shrader values but I have installed Filmore presta valves on all my rims. I’ve modified a CushCore to prevent any interference with the valve operation.

The sealant filling method is a little different but they don’t leak air…when installed properly.

 

[Tooks]

The LBS is having Xmas off, back on Fri 3rd Jan'25.
If I want to go for a ride before then, I'm going to have to refit the old valve!
Edit: I just had a thought; the LBS might not have the right bit in stock!!
............... Don't be me!

Steve, you don’t live all that far from me I don’t think? Feel free to pop down and I’ll get my compressor on it.

 

[alleeex]

Tightened the headset on my KSL again yesterday after doing a few laps of a jump trail [A470] and wondering why the bike sounded like it was going to fall apart .

Everything is torqued to spec but it seems to come loose and need redoing every 4-5 rides - it’s been doing this since it was new and it also had new headset bearings a few months ago so it won’t be them. I always thought the SWAT tool was to blame so swapped that out for a normal star nut and top cap but that hasn’t really helped.

Anyone have any idea why it’s happening? It sounded dreadful from the get-go yesterday so it’s not like it went loose after a big impact.

 

[Mik3F]

I thought that I'd fit my Muc-off Big Valves today (Xmas present from Secret Santa). It was the hybrid that fits in place of Presta but has a Schrader end cap. It didn't go as smoothly as I expected.

Front wheel off, air out, one side of the tyre released, old tubeless valve out. All without spilling a drop of sealant. So far so good. New valve in, collar tightened up, bead popped into place. Got out my "Airshot" tubeless tyre inflator. All ready for inflation!

That is when I discovered that the fittings that came with my "Airshot" didn't work with a Schrader valve.
Either they had gone missing in the years that I'd had the "Airshot", or had never been there from new. I tried my track pump, but that could not deliver enough air flow to pop the bead into place. I tried my Ryobi air compressor that works fine on car tyres, but it does not generate enough flow either, not being able to overcome the air leaking around the bead.

So, it's a visit to my LBS in the next town tomorrow to see if they have an appropriate fitting.

Before I started, I should have checked that when I removed the Presta fitting from the "Airshot" that it left a Schrader fitting underneath, it didn't. That is what assuming did for me. Don't be me!

Quite suprised by that, my track pump managed to seat the beads without issue using the hybrid valves

 

[irie]

... I tried my track pump, but that could not deliver enough air flow to pop the bead into place ...

Since getting a "Topeak Joe Blow Mountain X" pump I've never had to use the Airshot thingy, the pump delivers a lot of air very quickly. But then the tyres are seated with the Presta valves removed, so perhaps the design of the Muc-Off Shrader valve inhibits the fast flow of air through it? IYSWIM?

 

[Mik3F]

Since getting a "Topeak Joe Blow Mountain X" pump I've never had to use the Airshot thingy, the pump delivers a lot of air very quickly. But then the tyres are seated with the Presta valves removed, so perhaps the design of the Muc-Off Shrader valve inhibits the fast flow of air through it? IYSWIM?

The valves are designed to allow more air flow through

I have the Topeak pump too, no issues seatign the beads with the muc off schrader valves using it

 

[irie]

The valves are designed to allow more air flow through

I have the Topeak pump too, no issues seatign the beads with the muc off schrader valves using it

But does a Muc-Off Big Valve let through more air than a Presta valve with the core removed?

 

[Mik3F]

The question is does a Muc-Off Big Valve let through more air than a Presta valve with the core removed?

Yes, I would say so

 

[irie]

Yes, I would say so

What are the minimum ID's of both valves?