Bike pron

I rather like the look of this:
http://www.flickr.com/photos/bike/2250039138/

No lube needed and sounds like it'd last longer than a conventional chain as
well. I wonder what it feels like to ride. Oh, and the Ti SS roadie wouldn't
go astray either.

Resound wrote:
I rather like the look of this:
http://www.flickr.com/photos/bike/2250039138/

No lube needed and sounds like it'd last longer than a conventional
chain as well. I wonder what it feels like to ride. Oh, and the Ti SS
roadie wouldn't go astray either.

How do you change the belt?

Theo

Theo Bekkers Wrote:
Resound wrote:
I rather like the look of this:
http://www.flickr.com/photos/bike/2250039138/

No lube needed and sounds like it'd last longer than a conventional
chain as well. I wonder what it feels like to ride. Oh, and the Ti SS
roadie wouldn't go astray either.

How do you change the belt?

Theo
The seatstay appears to be bolted to the chainstay, in which undo
seatstay, switch belts and re-bolt seatstay.


--
steve46au

Usually the dropout would be detachable to allow the belt to be fitted,
though that doesn't seem to be the case with the frame pictured. I met a
rider on the Fitz's Challenge a couple of years ago who was riding a toothed
belt drive bike with a Rohloff hub. The drive belt was a smaller version of
what's used on some motorcycles. He was a fitter from Bathurst and had got a
local framebuilder to make him the frame with detachable dropout. The
chainring and cog he had machined himself. He gave the advantages of the
belt drive as:

Longer life than a chain
Quieter than a chain
No lubrication or cleaning needed
He could sling the bike in the back seat of the car without worrying about
getting the upholstery dirty

"Theo Bekkers" wrote in message
...
Resound wrote:
I rather like the look of this:
http://www.flickr.com/photos/bike/2250039138/

No lube needed and sounds like it'd last longer than a conventional
chain as well. I wonder what it feels like to ride. Oh, and the Ti SS
roadie wouldn't go astray either.

How do you change the belt?

Theo

"Nick Payne" wrote:
Usually the dropout would be detachable to allow the belt to be fitted,
though that doesn't seem to be the case with the frame pictured. I met a
rider on the Fitz's Challenge a couple of years ago who was riding a
toothed belt drive bike with a Rohloff hub. The drive belt was a smaller
version of what's used on some motorcycles. He was a fitter from Bathurst
and had got a local framebuilder to make him the frame with detachable
dropout. The chainring and cog he had machined himself. He gave the
advantages of the belt drive as:

Longer life than a chain
Quieter than a chain
No lubrication or cleaning needed
He could sling the bike in the back seat of the car without worrying about
getting the upholstery dirty

Disadvantages:

Big $$$$. No affordable Deore derailleur gears possible, it's the expense of
Rohloff (I'd love one if I could muster the $$$$) or you go single speed.
Need a frame with a break in the seatstay or chainstay to be able to change
the belt, structurally weaker.

--
Cheers
Peter

~~~ ~ _@
~~ ~ _- \,
~~ (*)/ (*)

On 2008-02-23, PeteSig (aka Bruce)
was almost, but not quite, entirely unlike tea:

"Nick Payne" wrote:
Usually the dropout would be detachable to allow the belt to be fitted,
though that doesn't seem to be the case with the frame pictured. I met a
rider on the Fitz's Challenge a couple of years ago who was riding a
toothed belt drive bike with a Rohloff hub. The drive belt was a smaller
version of what's used on some motorcycles. He was a fitter from Bathurst
and had got a local framebuilder to make him the frame with detachable
dropout. The chainring and cog he had machined himself. He gave the
advantages of the belt drive as:

I saw one of these locally (of all places), and it looked pretty good.
Reckoned the belt life was 16,000km. Apart from below, I wonder what
the energy transmission/efficiency is like.

Longer life than a chain
Quieter than a chain
No lubrication or cleaning needed
He could sling the bike in the back seat of the car without worrying about
getting the upholstery dirty

Disadvantages:

Big $$$$. No affordable Deore derailleur gears possible, it's the expense of
Rohloff (I'd love one if I could muster the $$$$) or you go single speed.
Need a frame with a break in the seatstay or chainstay to be able to change
the belt, structurally weaker.

Wait a few more years, and we'll be able to cut and join them:

http://www.smh.com.au/news/science/s...467243895.html
http://news.smh.com.au/the-power-of-...0221-1tga.html

--
TimC
"Mango sorbet is clearcut proof that we have progressed beyond the
bare needs of survival and have progressed to the transcendant."
- Marc Goodman in talk.bizarre

"PeteSig" wrote in message
...

"Nick Payne" wrote:
Usually the dropout would be detachable to allow the belt to be fitted,
though that doesn't seem to be the case with the frame pictured. I met a
rider on the Fitz's Challenge a couple of years ago who was riding a
toothed belt drive bike with a Rohloff hub. The drive belt was a smaller
version of what's used on some motorcycles. He was a fitter from Bathurst
and had got a local framebuilder to make him the frame with detachable
dropout. The chainring and cog he had machined himself. He gave the
advantages of the belt drive as:

Longer life than a chain
Quieter than a chain
No lubrication or cleaning needed
He could sling the bike in the back seat of the car without worrying
about getting the upholstery dirty

Disadvantages:

Big $$$$. No affordable Deore derailleur gears possible, it's the expense
of Rohloff (I'd love one if I could muster the $$$$) or you go single
speed.
Need a frame with a break in the seatstay or chainstay to be able to
change the belt, structurally weaker.


Would the seat stay being bolted to the dropout have to be appreciably
weaker? You'd certainly want some threadlock compound in there, but other
than that I personally wouldn't be worried about it breaking or otherwise
coming apart. For a commute/recreation bike I reckon 7-8 gears would do the
trick, so you could go with a Nexus hub instead. I still like the look of
that SS though. Less than 5½kg of thra****y goodness would make it an utter
joy to stomp through city traffic.

On Sun, 24 Feb 2008 13:50:48 +1100, Resound wrote:

Would the seat stay being bolted to the dropout have to be appreciably
weaker?

Given the number of high end dual suspension bikes with a pivot bolt
either on the seat stay or chain stay, I can't see it being a major
problem. I've had a couple bikes like that where I've had no problems from
the rear of the bike despite riding that has caused significant mechanical
problems elsewhere.

Both beams would probably need to be a touch stronger since there
could be a bit of movement, but not dramatically so. Using steel there
should even be sufficient flex for the belt to pass through without
needing a removeable section. Overall weight increase ( a few 10s of
grams at most) would be insignificant given you're talking commuter bikes
with hub gears.

--
Dave Hughes -
You're a classic example of that inverse
ratio between the size of the mouth and the
size of the brain - Doctor Who

"PeteSig" wrote in message
...

"Nick Payne" wrote:
Usually the dropout would be detachable to allow the belt to be fitted,
though that doesn't seem to be the case with the frame pictured. I met a
rider on the Fitz's Challenge a couple of years ago who was riding a
toothed belt drive bike with a Rohloff hub. The drive belt was a smaller
version of what's used on some motorcycles. He was a fitter from Bathurst
and had got a local framebuilder to make him the frame with detachable
dropout. The chainring and cog he had machined himself. He gave the
advantages of the belt drive as:

Longer life than a chain
Quieter than a chain
No lubrication or cleaning needed
He could sling the bike in the back seat of the car without worrying
about getting the upholstery dirty

Disadvantages:

Big $$$$. No affordable Deore derailleur gears possible, it's the expense
of Rohloff (I'd love one if I could muster the $$$$) or you go single
speed.

That's the short-sighted view. I have three bikes with Rohloff hubs (a
single, the wife's single, and a tandem) and also four derailleur-equipped
bikes. I think that over the projected 100,000km life of the hub (that's
Rohloff's claim) I'll probably get out the other end more cheaply. Up front
you don't have to buy STI/Ergo shifters, a rear hub, a cassette, front and
rear derailleurs, or two of the three front chainrings. Running costs are
minimal - on none of the hubs have I had to do anything more than an annual
oil change. Chains seem to last about three times longer than on a
derailleur system - never getting derailed and always having a perfect
chainline. The rear cog is reversible, so when it wears out (no sign of it
yet) you reverse it so that the load is now on the unworn side of the teeth.
The shifting cables are supposed to be replaced at 40,000km. I'm probably
past that point on the oldest of the hubs, but I'm waiting for the cables to
break.

Nick

Nick Payne wrote:
"PeteSig" wrote in message
...


"Nick Payne" wrote:

Usually the dropout would be detachable to allow the belt to be
fitted, though that doesn't seem to be the case with the frame
pictured. I met a rider on the Fitz's Challenge a couple of years ago
who was riding a toothed belt drive bike with a Rohloff hub. The
drive belt was a smaller version of what's used on some motorcycles.
He was a fitter from Bathurst and had got a local framebuilder to
make him the frame with detachable dropout. The chainring and cog he
had machined himself. He gave the advantages of the belt drive as:

Longer life than a chain
Quieter than a chain
No lubrication or cleaning needed
He could sling the bike in the back seat of the car without worrying
about getting the upholstery dirty


Disadvantages:

Big $$$$. No affordable Deore derailleur gears possible, it's the
expense of Rohloff (I'd love one if I could muster the $$$$) or you
go single speed.

That's the short-sighted view. I have three bikes with Rohloff hubs (a
single, the wife's single, and a tandem) and also four
derailleur-equipped bikes. I think that over the projected 100,000km
life of the hub (that's Rohloff's claim) I'll probably get out the other
end more cheaply. Up front you don't have to buy STI/Ergo shifters, a
rear hub, a cassette, front and rear derailleurs, or two of the three
front chainrings. Running costs are minimal - on none of the hubs have I
had to do anything more than an annual oil change. Chains seem to last
about three times longer than on a derailleur system - never getting
derailed and always having a perfect chainline. The rear cog is
reversible, so when it wears out (no sign of it yet) you reverse it so
that the load is now on the unworn side of the teeth. The shifting
cables are supposed to be replaced at 40,000km. I'm probably past that
point on the oldest of the hubs, but I'm waiting for the cables to break.

Nick
Can I ask where you got the bikes. I am thinking of getting a Thorn
Raven but would rather spend the money in Australia.





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