Moulton TSR singlespeed, fixed, top spec (one size)

For sale of complete bikes, trikes, recumbents ( minor missing components acceptable. e.g. no saddle, no pedals ). Please do NOT post bike bits here. They will be deleted.
joc
Posts: 34
Joined: 22 May 2013, 3:33pm

Moulton TSR singlespeed, fixed, top spec (one size)

Postby joc » 26 Jan 2019, 6:54pm

In almost as new condition, this bright orange TSR is set up as a single speed with both fixed and freewheel (flip/flop rear hub). It rides beautifully as a fixed gear, being lighter and feeling far more efficient than the 2-speed version. It has a high and desirable specification: wheels are large flange System EX hubs on Alex deep V rims, radially laced front; rear is flip/flop with both fixed sprocket and freewheel supplied. Tyres are Schwalbe Kojak. Gorgeous Paul Components front brake, Deda bars and stem in black, Brooks bar tape and Brooks C17 saddle (or Selle Italia Turbo if preferred, as in pic). Chainset has Gebhardt GTP CNC chainring. As usual, it is a separable frame made of Reynolds 525 tubing. Asking £700 ono. Collect north Essex/Cambridgeshire.
IMG_2257.JPG
tsrf1

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brumster
Posts: 230
Joined: 8 Sep 2009, 7:50pm

Re: Moulton TSR singlespeed, fixed, top spec (one size)

Postby brumster » 26 Jan 2019, 8:34pm

Any option to fit a rear rim brake?

joc
Posts: 34
Joined: 22 May 2013, 3:33pm

Re: Moulton TSR singlespeed, fixed, top spec (one size)

Postby joc » 27 Jan 2019, 12:31pm

Yes, it has the drilling for a rear caliper.

Brucey
Posts: 32295
Joined: 4 Jan 2012, 6:25pm

Re: Moulton TSR singlespeed, fixed, top spec (one size)

Postby Brucey » 27 Jan 2019, 12:59pm

joc wrote:Yes, it has the drilling for a rear caliper.


Maybe yours is different (it looks like 'the belt drive swingarm'..?) but IIRC the TSR2 swingarm is different from other TSR swingarms; the ones I have seen have a small braze-on which is tapped M5 where a caliper brake would mount. This fitting is not meant for mounting a brake to, it is meant for a mudguard. If you drill it out to take a brake, you are left with an unreinforced thin-walled tube, which may be easily crushed if you try and mount a brake to it.

TSR2 is meant to use a hub brake (eg coaster but a cable operated drum would work too).

The 2s hubs (be they SA or SRAM) feel less efficient for two reasons

a) there is a drag spring which is part of the coaster brake mechanism (this can be eased off if you know what you are doing) and
b) the low gear is the (efficient) direct drive gear; the high gear has a slight loss to it, which diminishes with good lube/more miles.

I'd want to set up the 2s gears as low and normal, but they are better suited to a 'normal + high' setup.
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joc
Posts: 34
Joined: 22 May 2013, 3:33pm

Re: Moulton TSR singlespeed, fixed, top spec (one size)

Postby joc » 27 Jan 2019, 1:20pm

Thanks Brucey. You are quite right - i just went out to check, having not looked at it before in detail - it is just a boss for mudguards, as it started as a TSR2 (and therefore, pedal-back brake).

joc
Posts: 34
Joined: 22 May 2013, 3:33pm

Re: Moulton TSR singlespeed, fixed, top spec (one size)

Postby joc » 27 Jan 2019, 6:09pm

Extra pic of rear triangle as requested.
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rearTri