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lost_in_thought
Joined: 11 Jan 2008
Posts: 6234
Location: West London
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JonGinge
Joined: 04 Jan 2008
Posts: 1755
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 Posted Sat Nov 7, 2009 12:35 pm |
Ooh. SS/FGers will never need their 15mm spanner again...
FCN 2-4 "Keep it going!", "I got nothing"
Planet-x Scott
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Wallace1492
Joined: 03 Jul 2009
Posts: 1133
Location: North Glasgow
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Posted Sat Nov 7, 2009 12:47 pm |
Indeed, quite clever, but what is the performance level? I mean, is it better than a full tube? Can see benefit in races though.... could be good as a spare when on the road, but how much time will it really save.
Kona Caldera - nobblies back on
Specialised Tricross - rack mudguards and panniers
FCN : 9/7
"Encyclopaedia is a fetish for very small bicycles" |
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JonGinge
Joined: 04 Jan 2008
Posts: 1755
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moonio
Joined: 16 Aug 2008
Posts: 392
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spasypaddy
Joined: 10 May 2007
Posts: 1286
Location: London, England
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Posted Sat Nov 7, 2009 2:31 pm |
well thats me probably getting that power meter then...
Planet X (Geared) - FCN 3
Premier (fixed/SS) - FCN 3 |
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WheezyMcChubby
Joined: 15 Sep 2008
Posts: 819
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Aidy
Joined: 01 Sep 2003
Posts: 655
Location: London/Herts
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Posted Sat Nov 7, 2009 2:56 pm |
I've always wondered why there wasn't a tube with a break in it.
I've been half tempted to bodge one every now and then, just to see if it would work.
The whole linking thing is clever, though. However, I'm still not sure it's entirely necessary - I reckon pressure and expansion of a closed end tube would be sufficient to stop any nastiness of uneven inflation.
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Aidy
Joined: 01 Sep 2003
Posts: 655
Location: London/Herts
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Posted Sat Nov 7, 2009 2:57 pm |
| WheezyMcChubby wrote: | Presumably the wheel still needs to come off to remove a traditional style tube from the wheel
Or have I got this totally wrong? |
If you were in a rush, you'd just cut it.
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ride_whenever
Joined: 17 Oct 2006
Posts: 8203
Location: United Kingdom
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Posted Sat Nov 7, 2009 3:07 pm |
if you don't link the ends, then the rotation of the tyre will cause the tube to process a lot.
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456!
silly little bike |
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Aidy
Joined: 01 Sep 2003
Posts: 655
Location: London/Herts
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Posted Sat Nov 7, 2009 3:13 pm |
| ride_whenever wrote: | | if you don't link the ends, then the rotation of the tyre will cause the tube to process a lot. |
Do you mean precess?
I don't see why it would affect an unjoined tube any more than it would a joined tube.
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JonGinge
Joined: 04 Jan 2008
Posts: 1755
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Posted Sat Nov 7, 2009 3:16 pm |
| ride_whenever wrote: | | if you don't link the ends, then the rotation of the tyre will cause the tube to process a lot. |
I concur*. Ever ridden for a while with a flat tube? I'm not sure pressure alone would keep it in place.
* not about the spelling
FCN 2-4 "Keep it going!", "I got nothing"
Planet-x Scott
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Aidy
Joined: 01 Sep 2003
Posts: 655
Location: London/Herts
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Posted Sat Nov 7, 2009 3:22 pm |
| JonGinge wrote: | | ride_whenever wrote: | | if you don't link the ends, then the rotation of the tyre will cause the tube to process a lot. |
I concur*. Ever ridden for a while with a flat tube? I'm not sure pressure alone would keep it in place.
* not about the spelling |
... but surely that backs it up, if anything.
It precesses with a flat tube because the pressure isn't keeping it in place. Despite the fact that it's a unbroken circular tube.
However, that example does bring up a good point. What happens if you get a sudden puncture with an unjoined tube? I'd suspect it would be all kinds of bad.
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ride_whenever
Joined: 17 Oct 2006
Posts: 8203
Location: United Kingdom
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moonio
Joined: 16 Aug 2008
Posts: 392
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Posted Sat Nov 7, 2009 6:48 pm |
mine had overlapping ends
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shouldbeinbed
Joined: 16 Sep 2009
Posts: 271
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Posted Sat Nov 7, 2009 6:56 pm |
Halfords sacked them as they didn't prove popular. TBH this one seems as faffy as a couple of seconds with the spanner to pop the wheel off and put a standard tube on.
FCN 7 & 9 |
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Aidy
Joined: 01 Sep 2003
Posts: 655
Location: London/Herts
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Posted Sat Nov 7, 2009 7:23 pm |
| shouldbeinbed wrote: | | Halfords sacked them as they didn't prove popular. TBH this one seems as faffy as a couple of seconds with the spanner to pop the wheel off and put a standard tube on. |
My pondering was mainly based off of having played with hub gears.
Hopping the rear wheel off a hub geared bike to change the tube is completely the biggest pain in the posterior.
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don_don
Joined: 16 Mar 2005
Posts: 936
Location: Cheltenham
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shouldbeinbed
Joined: 16 Sep 2009
Posts: 271
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Posted Sat Nov 7, 2009 8:10 pm |
| Aidy wrote: | | shouldbeinbed wrote: | | Halfords sacked them as they didn't prove popular. TBH this one seems as faffy as a couple of seconds with the spanner to pop the wheel off and put a standard tube on. |
My pondering was mainly based off of having played with hub gears.
Hopping the rear wheel off a hub geared bike to change the tube is completely the biggest pain in the posterior. |
I ride on an Alfine hub, changing the rear is a piece of P***
lever off 1 side of the tyre and pull the dead tube completely out
undo the nuts and lift the wheel just enough to slip the tube over the axle and past the dropouts same for slipping the new tube in.
put the wheel back in place and tighten the nuts again,
feed the new tube onto the rim, remount the 1 side of the tyre
inflate and away.
I've never had a pinch puncture after replacing like this and can change a tube and be on my way in a few minutes.
and all without the joys of getting oily from unhooking deraillures
FCN 7 & 9 |
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ride_whenever
Joined: 17 Oct 2006
Posts: 8203
Location: United Kingdom
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Posted Sat Nov 7, 2009 8:29 pm |
| don_don wrote: | | Convenient, but tubeless is the way forward. Inner tubes are anachronistic pieces of junk that deserve extinction. IMHO... |
+600000000000000000000000
it's awesome, going to convert my pompino when i get new wheels for it, and do my ss xc bike when the spokes arrive!
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456!
silly little bike |
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