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These seatposts are so rare i would like to know how much one would sell for if one ever comes up for sale.

Someone was hunting for one here 6 years ago:
https://www.lfgss.com/conversations/158797/

This would fit (badly) if you have $375 to spare:

http://www.ebay.co.uk/itm/Shimano-Dura-Ace-AX-seatpost-Aero-NOS-7320-C-Type-Tange-Air-/221904581664?hash=item33aa8b3420:g:m0gAAOxyRhBS824s

good job!

i'm not sure if that penny will plug that hole, looks a little too big to me

^^ No

They are a bike shop/workshop aswell with :* "repair bays with fully trained mechanics that will do everything from a full strip down (for respray) to removal of small parts that you may find difficult i.e.. bottom bracket or head set."*

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I need a little advice, I'm currently building up a Pompetamine and need the wheels building. The only 'Offered: wheel building' threads seem age old. So can anybody suggest a skilled someone/somewhere that can build my wheels for a reasonable price.

I'm based in east london, I have all the hubs/rims/spokes just need the skills.

that trailer is awesome, really nice low centre of gravity. Are those all chris king headsets?
The whole bike is just ridiculous, someone has let there crazy cycle desires loose with no compromise in design or budget.

You have totally misunderstoof what I was trying to say.

I meant a two wheel trailer, pretty much the same as your picture. But joined with a two arm connection to the bike. The "pivot" or "hinge" part will be the same as with the bob. It bends where the twin connecting arm joins the trailer part.

Yes the bob design with the two arms allows for up/down plus left/right movement, this is all you need with one wheel because it can lean with you around corners.

A two wheeled trailer is going to stay parallel to the ground while you lean so it will have to be able to twist where it connects to the bike.

I just cant think of a design which uses two arms like the bob trailer but then allows for the twisting motion while remaining nice and strong and not floppy.

hay :) iv'e got some u can have..

Great stuff, cheers, ill send you a PM.

Its undoubtedly a better design for distances, however I am not shore that the one wheeled trailer is a better load bearing design though.
By having two wheels and carefully loading the weight directly over the trailer axles a large amount of stress on the pulling arm should be eliminated.
But the one wheeled design acts like a bridge transferring all of the load between the bicycle and trailer wheel, so the actual structure of the trailer will be bearing more weight.
Also because i am going for two wheeled design i need a single arm because the twin arm does not accommodate for the twist motion that a two wheeled trailer will have.

This is my first trailer but i don't think it will be my last, so i am learning as i go along. I am not an engineer i just like making things so i might be very wrong with my ideas, let me know.

So far i have only made the coupling device which will provide a quick release between the frame and the trailer and allow for free movement on every axis. I made this from a heavy duty low level castor wheel with which I welded a snap adaptor from an air compressor providing a strong but quick releasable connection. (I got this idea from a youtube video i saw)

I have done a few sketches for the structure of the trailer and have amalgamated the best elements i have seen from various designs. My main inspiration has been the "flatsy" from http://bikecart.pedalpeople.com:

I'm planning to make mine out of conduit like the flatsy. I am designing mine to take a good 80kg so it can carry a human but i don't know if this is a bit ambitious at this point.

If anybody has got any experience or advice, let me know.

Hello,

I am building a bike trailer from scratch and need two 20inch front wheels.

Ideally they need to be free or nice and cheap so if you have any old wheels that i could put to use let me know.

Many thanks
R

Superior Aryan engineering. Deralieurs are for untermenschen.

Well i'm based outside of Bristol at tho moment (Shepton Mallet) although travel into Bristol frequently.
Without postage they will be £160 however I'm off to Cornwall for a few days tomorrow which puts things on hold fore a bit.

Chainset is now sold.
Wheels still available.

Which is Boardmans hour record bike designed by Mike Borrows.

Prototype for:

Got both PM's.
Looks like Epam wants them if not there all yours N.Hero

Ive now added the chainset.

Also If you buy both the wheels and chainset i'll throw in a 111mm Centaur BB for free.

Now £170 with recorded delivery.

I'm not in London at the mo but collection from Bristol could be a possibility.

I have for sale a wheelset consisting of 32h silver Goldtec hubs laced 3X to silver non-machined Rigida DP18's handbuilt with Sapim spokes.

The Hubs are in very good condition, all threads are perfect, one side has never been used. they are shiny silver with no logos.

The rims are the shiny non-machined one's that where made by Rigida especially for 14bike Co. The rims are have never seen a brake but have a number of surface scratches.

The wheels spin nice and true and the bearings are super smooth, they are a very strong, rigid wheelset which despite their deep rims have a classy almost classic appearance. They have done maybe just 500 miles since I had them built about 18 months ago.

£170 with recorded deliverie.
Which is less than the cost of a pair of new Goldtecs these days.

And here i have a Campagnolo Record Pista chainset (the new kind), 170 length with matching 50t chainring.

All original chainring bolts, axle bolts, shiny dustcaps and washers included.

They are in good condition, with some rub marks in the usual places and some small scratches however overall they look really good.

They have only been fitted and removed once by myself and once by the previous owner so the tapers and bolts really are excellent, as is the chainring which shows little wear.

£100 with Record'ed delivery.

This should be better.
A thief would have to be pretty determined to get past that many bees.

https://mail.google.com/mail/?ui=2&ik=c5ab6335c5&view=att&th=130f2101b3d8adfc&attid=0.1&disp=inline&zwI was in bath today and spotted this.
Its a swarm of bees forming a nest on the bike, a definite deterrent to thieves i think.
Photos from aphone so shit and wonky.

The 1/3rd scale PK Ripper from the BMX museum is finished, its absolutely insane!

i'm surprised they don't make them like that, surly they must relies the performance benefits.
I heard if you remove all the spokes you get pure aero, plus it reduces the weight to that of a naked mole rat, how cools that!