Cycling UK Forum

I almost made the same mistake when shopping in ASDA and Tesco. Both stock cheap inner tubes but the 700c and 27x1,1/4 ones all had schrader valves fitted. This explained why the shelves were packed so full of them!!!!!

It's not quite as straightforward as this. If the suntour levers are indexed then they may have 3 modes of operation marked as friction, UL or RE. Friction mode will work with most freewheels, UL works with 7 speed freewheels or cassettes, RE mode indexes with 6 speed (or 5 speed) freewheels. But to compound this compatability issue suntour also made some narrow 6 speed blocks where the individual sprockets were spaced the same as 7 speed ones. Therefore in theory you should be able to select the indexed gear levers to work with a shimano 7 speed cassette, by selecting the UL mode, or with a 6 speed shimano block you should select the RE mode to preserve the indexing.

I have had exactly the same thing happen to me. Again it was on a Tandem and the front tyre a Schwalbe Marathon suddenly popped off the rim for no apparent reason. The hooked rim had no obvious defect. This tyre had been on the front wheel for about 2 months and had covered approx 1000 miles without any problem. After this event I could never get it to stay on the rim again. No matter what I tried to do even building the seat up with tape it would not stay on the rim. Eventually I binned it. I will not be useing Schwalbe tyres again on the tandem and will stick to Conti's.

This 16mm nut and bolt method also works for the left hand cup providing the right cup is removed. But you will have to use a socket and an extension working from the right hand side. Tightening the nut or bolt grips the cup and further tightening then removes it as normal. You can also use this method to insert the right hand cup and tighten it up without using an adjustable and the risk of it slipping and taking the skin off your knuckles! Been there done that!!

One trick i recall for removing the right hand cup if you have removed the spindle was to use a 16mm nut and bolt through the cup. By tightening the bolt you had a lot more purchase on the cup than by using a thin spanner on the cup itself. You may be able to adapt this to suit your circumstances but you can see the principle. Dont forget as someone else has mentioned the right hand cup has a left hand thread so needs to be turned clockwise when viewed from the right side to loosen it.

In order to publicise this event James Cracknell and Rebecca Romero are going to attempt the LEJOG mixed tandem record on 3 August 2009. See the RRA website for the schedule http://www.rra.org.uk/

Drop bolts are as Sheldon Brown suggest's. Aluminium strip front and rear and a spacer made from an aluminium tube the same width as the fork crown. I also used a 1/2 round file to make a concave hollow in the aluminium strips to roughly match the profile of the fork crown to restrict any sideways movement. Hope this helps.

This is how i fitted the bmx size wheels (406) to my Kingpin (originally 440 size). Thanks to Sheldon Brown and others.

I am currently rebuilding a dawes kingpin shopper bike which has 440 (500A) size rims. It is getting increasingly difficult to find tyres in this size so i have opted to try 406 size bmx rims which have a much bigger range of tyres. I have taken Sheldon Browns advice and made some drop bolts to enable the original brakes to be used as shown.

Hey it looks great,

You have inspired me to make a start on a similar project with a 1976 folding Dawes Kingpin. I have decided to go with the smaller wheel size 406 (partly as i have obtained a set, salvaged from a childs bmx) and make some drop bolts as per sheldon brown's suggestion. The downside to this is that it lowers the bottom bracket compared to the original 440 (500A) size wheels. 451 rims are the alternative but these and tyres appear to be increasingly difficult to obtain. Perhaps we could have a forum to ourselves about this. We could even include Chopper modifications.

Has anyone mentioned that some speed guns employ a laser which if you look at the instructions say do not point at peoples eyes! Very difficult not to do this when pointing it at an approaching cyclist. Perhaps the operators assume we all wear glasses!

Hi Milly,
I am glad you enjoyed Glastonbury but you may have missed Tomasz Schafernaker giving the weather forcast.
http://news.bbc.co.uk/1/hi/8119664.stm

Roger

Hi Frank,
Welcome to the forum. As a Somerset resident in the Avon and Somerset Police area do you look after us as well or are you restricted to Bristol only.
Regards, Roger

Thanks rogerzilla that explains everything. Glad I didnt push it too hard and will definitely leave well alone. Fixed hey, that opens up more possibilities in the future but not for this Dawes Kingpin. I will investigate further if i can pick up a hub locally.
Regards, Roger

Just an update, I have now sealed up the the r/h ball ring with ptfe tape and also sealed the inner ring ball cap with a smear of silicon and no leaks apparent after a week. Brilliant. However I was unable to free the left hand ball ring despite trying with an extended through bolt and tightening from the outside (this works well with a r/h side bottom bracket cup which also has a left hand thread). It was so tight that I felt further effort would result in possible damage. This side is not leaking however so I will leave well alone for now.

Thanks for the advice. Roger