Integrated tyre pre...
 

[Closed] Integrated tyre pressure adjustment system

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Offline  thols2
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Do people really see the need to adjust their tyre pressure multiple times per ride? I just can't see the benefit being worth the cost and hassle.

https://gravaa.com/

 
Posted : 23/01/2021 2:26 am
Offline  seadog101
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Once more an expensive solution looking for a problem to solve.
I can only see more hassle that its extra weight is worth.

 
Posted : 23/01/2021 2:57 am
Online  Poopscoop
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I agree, one more thing to go wrong. An evolutionary dead end I would think.

Still, I do like some of the odd ideas that come along in biking but most just stay odd and don't go anywhere.

 
Posted : 23/01/2021 5:43 am
Offline  thols2
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I think you could DIY by ziptying a can of sealant into the spokes and screwing the hose onto the valve.

 
Posted : 23/01/2021 6:05 am
Offline  nickjb
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I can see that being very useful, especially if you ride mixed terrain. You could say similar things about dropper posts but they are pretty ubiquitous now.

 
Posted : 23/01/2021 6:09 am
Online  Poopscoop
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Just read their brief. I take it back. There isn't one more thing to go wrong. Sounds like there are a LOT of things to go wrong...

Integrating a mini pump, clutch and electronics etc into hubs? On top of all the other things that can go wrong in a normal hub?

No thanks.

miniature high-pressure pump is stored, which is driven by the rotation of your wheels. Via an integrated clutch unit and electro-pneumatic control system the pump gets only active on demand.

 
Posted : 23/01/2021 6:11 am
Offline  n0b0dy0ftheg0at
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Could be useful for gravel riders, raise for tarmac, lower for offroad... Or you could just take a decent pump with a pressure gauge.

 
Posted : 23/01/2021 7:38 am
Offline  bruneep
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the advantages listed:

Save weight; never the need to carry a heavy saddlebag or pump during your rides anymore!

No weights given for their system I notice

🤔

 
Posted : 23/01/2021 7:45 am
Offline  jeffl
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I did wonder about a system to do this on bikes. My initial thoughts were a CO2 canister and something to control it. Reason being that I have quite a bit of road/cycle path work if I want to ride the MTB in the peak district. I generally get round it but overpumping the tyres then letting some air out when I get to the propper trails.

 
Posted : 23/01/2021 8:38 am
Offline  Tim
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Solution looking for a problem.

 
Posted : 23/01/2021 1:46 pm
Offline  K
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Come on, replace one of the spokes with a tube at least and finish the job properly.

 
Posted : 23/01/2021 1:53 pm
Offline  leffeboy
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nothing new under the sun here

Indiegogo: On-The-Fly Adjustable Tyre Pressure | Singletrack Magazine (singletrackworld.com)

But yes, it does seem a bit niche in the end

 
Posted : 23/01/2021 1:57 pm
Offline  danmac
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When did people stop just riding bikes and start inventing 'problems' that don't seem to exist

 
Posted : 24/01/2021 11:30 am
Offline  jameso
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Important product if you think hard tyres are important for riding on tarmac.

 
Posted : 24/01/2021 11:36 am
Offline  tjagain
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For the fatty I would find it useful as I have miles of tarmac to get to the trails. 15 psi to ride out, 8 psi on the trail, 15 to ride home.

what i actually do is blow up to 15 psi before I leave home, drop to 8 on the trails and ride home again on 8 psi.

 
Posted : 24/01/2021 12:03 pm
Offline  timbog160
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DUKWs had central tyre inflation in 1942, and its been used in many military and off-road applications since. So it’s nothing new as a concept but this is the first time I’ve seen it applied to a bike. I can’t see it being possible to make it light enough, or reliable enough, or cheap enough to be worthwhile. It won’t even do away with the need for a rucksack, since you can always just strap a cheap compact pump to your frame.

 
Posted : 24/01/2021 12:59 pm

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