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Folding Bikes Discuss the unique features and issues of folding bikes. Also a great place to learn what folding bike will work best for your needs.

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Old 04-04-07, 12:40 AM   #1
norfolk bolt
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Invest in a R20 folder...wtf!!!

Because when your done and spent you've got a finished bike that rides like a nippy road bike, thats unique to you and that connects you through deep technical intersections to an incredible UK cycling legacy...and is basically a bike friday with a shorter head tube and less steel bracing...

When the geek overtakes the freak you know you are riding a bike that makes sense!!!!

Ride on my Raleigh Brothers
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Old 04-04-07, 01:13 AM   #2
LittlePixel
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Word!

(Have you been at the Happy Raleigh Pills?)
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Old 04-06-07, 03:57 PM   #3
Guy Retreau
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Oh Wow, what an extravagent investment and just too much fun to ride.
Did some overtaking of my own on this Raleigh "five" Twenty.
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Old 04-07-07, 06:05 PM   #4
norfolk bolt
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hahaha...no i'd just been for the first proper ride since stripping it down and putting stelvio's on. Man those tyres do make it feel fast!!! Hey Guy, whats that white tube above your 20's cross bar? It's noy an addition is it?
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Old 04-07-07, 08:55 PM   #5
Guy Retreau
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Quote:
Originally Posted by norfolk bolt
hahaha...no i'd just been for the first proper ride since stripping it down and putting stelvio's on. Man those tyres do make it feel fast!!! Hey Guy, whats that white tube above your 20's cross bar? It's noy an addition is it?
That's my Silca frame pump, off of my regular road bike. Haven't trimmed it down, just wedge it in where it fits. r, Guy
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Old 04-08-07, 12:08 AM   #6
norfolk bolt
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Originally Posted by Guy Retreau
That's my Silca frame pump, off of my regular road bike. Haven't trimmed it down, just wedge it in where it fits. r, Guy
Ahh...i thought for a moment it was a cross bar!!! Bike looks good mate...what size wheels? They look big.
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Old 04-08-07, 07:54 AM   #7
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Yeah, those wheels look huge compared to mine!
Juan

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Old 04-08-07, 09:28 AM   #8
Guy Retreau
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Originally Posted by norfolk bolt
Ahh...i thought for a moment it was a cross bar!!! Bike looks good mate...what size wheels? They look big.
They are ISO 520 wheels. That's why I call it a Five-Twenty. I'm running a 60T chainring with 16T or 17T rear depending on the wind. The larger wheels give me a touch more bottom bracket clearance which the Twenties generally could use. This has become a retreau variant of the Twenty similar to the current day Airnimal Joey. r, G.R.
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Old 04-08-07, 09:54 AM   #9
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G.R.
What kind of breaks are you using and were they easy to install?
Juan
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Old 04-08-07, 10:09 AM   #10
Guy Retreau
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G.R.
What kind of breaks are you using and were they easy to install?
Juan
I'm using a 24" time trial front fork with short clearance sidepull brake, recess mount bolt.
In the rear, I cut and ground off the original brake bridge because I didn't like the way it looked.
Brazed in a new brake bridge from 4130 tubing I purchased online. was able to set the rear clearance
just where I wanted it for the short clearance side pull. Reversed the anchor bolt and housing stop to get a better orientation for the brake cable.

The other peculiar thing is I rebuilt the chainstays from an old juvenile Peugeot fork blades. The fork blades were heavier cross-section and provided a transition from round tube to wide oval. At midlength the chain stay tubing is butted with a full internal sleeve and then brazed. At the BB, the forkblades were shaped to fit the BB shell and then fillet brazed all around. I debated about using a chainstay bridge and decided to go without it. So far, no worries.
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Old 04-08-07, 10:57 PM   #11
kraftwerk
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Guy,
detailed photo's are in order! Like the 520 look by the way... are those tires hard to find?
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Old 04-09-07, 08:26 AM   #12
Guy Retreau
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For Kraftwerk:

Detailed photoset previously posted. See:
http://www.bikeforums.net/showthread...91#post3669991
Also:
http://www.flickr.com/photo_zoom.gne...025@N00&size=l

Rims were an ebay find but could be sourced as new.
Sun Aeroheads or ICI-1s at the 520 size to name two.

Tyres easily sourced are
Schwalbe Stelvio 24 x 7/8" (23-520)
Panaracer Tecnova or Pasela (25-520)
Panaracer Touring tyre (28-520)
There may be others. --G.R.
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