Search found 984 matches

by BigG
30 Aug 2010, 8:07pm
Forum: Bikes & Bits – Technical section
Topic: Downtube levers
Replies: 4
Views: 374

Downtube levers

Does anyone- or did anyone - make 9 speed Shimano compatible downtube levers? The front could either be friction only or triple. I haven't seen any on eBay lately.
by BigG
30 Aug 2010, 5:49pm
Forum: Bikes & Bits – Technical section
Topic: Gear Ratios
Replies: 128
Views: 7624

Re: Gear Ratios

I started of with a 4 speed 14/21 with a 48 tooth chain ring. I think that the 14 tooth sprocket was the smallest made by Regina then (the early 1950's). This was fine for time trialling on the A40 to Denham roundabout and back and for general leisure cycling. I extended to 14/26 for touring includi...
by BigG
25 Aug 2010, 5:37pm
Forum: Bikes & Bits – Technical section
Topic: 531 frame flex leading to tyre rubbing frame?!
Replies: 45
Views: 2903

Re: 531 frame flex leading to tyre rubbing frame?!

3 mm side clearance on the tyres is really not enough. I find that 5 mm is needed to avoid the problems you report. Your frame is probably designed for smaller tyres. Stick to 28s and avoid the problem.
by BigG
10 Aug 2010, 9:08am
Forum: Does anyone know … ?
Topic: Advice re my old touring wheels
Replies: 9
Views: 758

Re: Advice re my old touring wheels

The hubs alone would fetch about £50.00 (or more) on eBay. Demand for 27'" rims and (wheels) is declining but these would also fetch a good price if they are not worn. The two separated are likely to fetch more than the complete wheels. However, an ad in the Gazette would probably find a good b...
by BigG
20 Jul 2010, 11:05pm
Forum: Bikes & Bits – Technical section
Topic: Chainring spacing
Replies: 2
Views: 285

Re: Chainring spacing

Thanks for your help. I may have to return to my Ultegra downtube levers (front not indexed) and Kelly take-offs. I use these latter on another bike and rather like them.
by BigG
20 Jul 2010, 8:05pm
Forum: Bikes & Bits – Technical section
Topic: Chainring spacing
Replies: 2
Views: 285

Chainring spacing

I run a 3 x 7 set up - half step and granny - using a Stronglight Escape triple chainset with Shimano RSX sti levers and a Shimano 700cx front changer. I now want a lower gear and tried fitting my old Cyclotouriste triple only to find that the chainrings are closer spaced than on the Escape, about 6...
by BigG
7 Jun 2010, 5:31pm
Forum: Bikes & Bits – Technical section
Topic: Suntour XC SE brakes
Replies: 15
Views: 3355

Re: Suntour XC SE brakes

I have used a Suntour SE rear brake for many years and have always found that it "does what it says on the tin"; that is it gives good braking for a lower lever pressure than normal cantilevers. I have also used the Scott equivalent on both front and rear with equal success. The problem wi...
by BigG
7 Jun 2010, 5:01pm
Forum: Bikes & Bits – Technical section
Topic: Vintage simplex gears - any info ?
Replies: 13
Views: 1477

Re: Vintage simplex gears - any info ?

The chainstay mounted mechs were mainly used for big chainring tooth differences and required a considerable overshift to change at the rear. They were rare in the UK. The normal Simplex mech throughout the 1950's (with its equivalent Benelux mech) was the Tour de France model. This was drop-out mou...
by BigG
7 Jun 2010, 4:39pm
Forum: Bikes & Bits – Technical section
Topic: RIP Shimergo?
Replies: 14
Views: 702

Re: RIP Shimergo?

A far more convenient solution than bar-end shifters is offered by Kelly take-offs fitted with normal downtube levers. Both the take-offs and levers are readily available on eBay. This arrangement gives the friction option combined with seviceability and much more convenient positioning beside the b...