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Old 29-11-2009, 07:13 PM   #1
Bigpikle
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Cool Built a singlespeed bike today...

I've been wondering what to do with one of my old bikes, a 9 yr old Trek racing bike I used when I first started doing triathlons. Its old now and long been retired since the arrival of my CF beauty, and needed more £ spent on it than it was worth to get it back into decent condition... So, I decided to turn it into a singlespeed hack bike for general use and a bit of fun

Singlespeeds are fun, good for developing fitness as you have only 1 choice when it comes to flats and hills and being stripped of all the excess weight of multiple chainrings, cables, bigger cassette etc are a good bit lighter. Best of all they are much more quiet and efficient than anything with a derailleur

Took an afternoon of dismantling, cleaning years of muck and grease, stripping down and then reassembly with a little custom fettling, but by tea time it was done. Only had time for a 5 minute test ride in the dark and rain, but it rides beautifully and the basic conversion is done.
  • Triple chainring stripped to just the middle ring (although it has the outer still on today until some new shorter bolts arrive)
  • 9 speed cassette removed and replaced with 18 tooth sprocket and spacers
  • all gear cables, derailleurs etc removed
  • chain tensioner fitted as the frame has vertical dropouts and thats the ony way to get the correct chain tension on these frame
Next up it will get new bars and brake levers, perhaps a respray or powder coating and some better wheels when my race wheels get upgraded next spring

Only a couple of pics as its cramped in my garage as its dark and wet, but it shoes whats changed...









loads of fun

Last edited by Bigpikle; 29-11-2009 at 07:51 PM.
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Rich (30-11-2009)
Old 29-11-2009, 07:25 PM   #2
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Looking good, i've pondered over swapping my Scrap to single speed but I use the gears more than I thought... maybe it's time for a DMR Rhythm...
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Bigpikle (29-11-2009)
Old 29-11-2009, 07:35 PM   #3
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Thumbs up

Love this kind of post, shows creative thinking on the part of the op, rejigging something in need of care into something pretty cool.
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Old 29-11-2009, 07:51 PM   #4
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Nice job! Must be mad riding a single speeder though!

Call me an old git but I need gears to get up hills!

Cheers
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Old 29-11-2009, 07:53 PM   #5
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needs a little more tweaking...

the chain isnt quite short enough, and the crankset is obviously out of adjustment somewhere, given the noise its making, but I'm really pleased so far.

My original inspiration were these 2...

(I want the bar setup from this one)



and

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Old 29-11-2009, 07:56 PM   #6
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Quote:
Originally Posted by RedCloudMC View Post
Nice job! Must be mad riding a single speeder though!

Call me an old git but I need gears to get up hills!

Cheers
cheers - I'll tell you in a few days

I was rather worried about getting the right gear ratio as its hilly here, but a quick blast tonight up the hill in our street and the 42-18 seems reasonable. Its always a compromise of course, but at least its a freewheel and not a fixie
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Old 29-11-2009, 08:24 PM   #7
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Tried a fixie on the velodrome down at Welwyn a while back...GREAT fun..slowing the pedals to brake etc...good fun.

Good luck with the single speed...let us know how you get on with it on a proper ride.

Cheers
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Old 29-11-2009, 08:49 PM   #8
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Looks good mate, know nothing about bikes

But I'm amazed T let you bring it into the house ...
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Old 29-11-2009, 10:03 PM   #9
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Before you ride it I would seriously lower the stem as it's well above the safe height mark that showing.

It's got to be a fixed for single speed only need 1 brake for the road,
none on the the velodrome, excellent behind a derny 40mph & no brakes!!

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Old 29-11-2009, 10:30 PM   #10
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When is the detail coming Damon?
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