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i built my own from scrap ply based the plans in this book (£9 download):
http://www.wheelpro.co.uk/wheelbuilding/book.php
it works very well indeed
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I have my mid 90's 8 speed chorus groupset here: £180 + £10 postage

Very light pitting on the 170mm cranks (and I mean very light)

Record braze-on front mech

Chorus rear mech

8 speed Chorus levers


Headset for 1" threaded fork, BB is 68x102mm English and is smooth as new

Gear adjusters, 8 speed chain, spare block (13-21 again) unused/NOS Mirage headset

Original Rigida DP18 on Chorus 8 speed (block is 13-21, skewers included) : £80 + £15 postage







I'll consider splitting the groupset if after a while there's no interest in it as a whole.
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8 speed chorus pictures here circa 1994-5
http://logicmonkey.co.uk/chorus8sp/
Prices off the top of my head...
Chorus on DP18 Wheelset (13-21 cassette, inc skewers) : £80
Chorus Chainset : £40
Chorus BB (68x102mm/English) : £25
Chorus Ergo Levers + frame adjusters : £35
Chorus Brakeset : £35
Chorus rear derailleur (8sp) : £40
Record front derailleur : £15Chorus cassette (13-21) : £13
Kalloy Uno 27.2mm Seatpost : £4
Cinelli 1A stem 95mm : £10
ITM stem 120mm : £7Can do a deal on the whole bundle and agree a postage cost (I'm in Yorkshire - wheels alone would be 15 quid)
Get in touch if interested
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so now i'm thinking this through. it's a developable/ruled surface.
WARNING - very geeky very quickly...
if i wanted to create a Mobius strip, i'd run a straight line round a circle and rotate it by pi in one revolution. the start and end would match up.
you could do the same for a bike track. sweep your 7.1 metre line from the start/finish line to the pursuit line only (half a track) and rotate up to 42 degrees max, and then back down again to your starting angle. to get the track steepness you want, where you want, you make the swept line rotation non-linear. the bend exits can be made slightly steeper than the entries with some probably quite ugly functions.
i like this a lot. thanks for posting.
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was another great evening last night.
Laura Trott fantastic to watch - in the devil i hardly looked at the back of the field because LT was giving a master class in pacing and positioning in the front 4. i'll watch it back on recorded coverage later.
Other stand outs were Owain Doull, Matthew Richardson and Theo Bos - all dominant
looking forward to the world champs now
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@runpaintrunrun well done - at least you got something good out of it :)
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i'm on a 56cm Parallax and i'm 6' tall (BB centre to saddle top 785mm). to get my saddle nose to bar of 545mm i had to go with a 120mm stem.
it's a good fit, but visually i'd prefer a slightly shorter stem.
i'm sure i could get away with the 58cm frame quite happily.
i love the bike BTW - it was a toss up between the parallax or a vigorelli, in the end the optical paint job decided it for me.
EDIT - good deal this BTW. i paid just shy of 600 new.
GLWTS