Search found 347 matches

by sreten
8 Oct 2014, 9:30pm
Forum: Bikes & Bits – Technical section
Topic: Changing Gear system on Folding bike
Replies: 19
Views: 2872

Re: Changing Gear system on Folding bike

When you say its not really worth doing, what exactly do you mean by this? Hi, I meant there is nothing inherently worse on a folder about twist shifters than levers. For both types the overall quality of the system is more important than the execution IMO. FWIW I recently rode an old 3 speed folde...
by sreten
8 Oct 2014, 9:00pm
Forum: Bikes & Bits – Technical section
Topic: Cracked head tube
Replies: 6
Views: 712

Re: Cracked head tube

Hi,

The assumption I presume one would make would be that bike has been ridden hard and a lot.

What you want used is the exact opposite I would also presume, for near the same price.

rgds, sreten.
by sreten
8 Oct 2014, 8:13pm
Forum: Bikes & Bits – Technical section
Topic: First bought a coffin, now a BSO folder!
Replies: 23
Views: 3392

Re: First bought a coffin, now a BSO folder!

Hi, The Brompton has rear suspension and skinnier tyres so hard to compare the 16" wheels to 20". You'll get used to the lively front. FWIW run the front tyre at significantly lower pressure than the rear.* If the tyres are the cheapest generic BMX type (they were on my £100 steel folder) ...
by sreten
6 Oct 2014, 12:34am
Forum: Bikes & Bits – Technical section
Topic: new approach to puncture repair?
Replies: 29
Views: 1587

Re: new approach to puncture repair?

Hi, It will never fly, other than as an emergency solution. Hacking a big hole in your innertube is never going to appeal to anyone, whether it works or not it is crude. The video circumvents some of the difficulty of fitting it. What it's got to do with saucepans is totally beyond me. rgds, sreten....
by sreten
6 Oct 2014, 12:17am
Forum: Bikes & Bits – Technical section
Topic: Changing Gear system on Folding bike
Replies: 19
Views: 2872

Re: Changing Gear system on Folding bike

Hi,

Not really worth replacing but it can be done.

rgds, sreten.
by sreten
3 Oct 2014, 12:36am
Forum: Bikes & Bits – Technical section
Topic: Leather saddle to replace Brooks B33
Replies: 4
Views: 634

Re: Leather saddle to replace Brooks B33

Hi, What makes you assume that a triple sprung saddle is of any practical use ? FWIW it isn't, and neither are suspension seat posts. Rear Elastomer saddles work well on solid small wheeled bikes. The fattest decent tyres that will fit run at optimum pressure are a miles better option than springing...
by sreten
2 Oct 2014, 11:58pm
Forum: Bikes & Bits – Technical section
Topic: Turbo Trainer and rear wheel
Replies: 3
Views: 579

Re: Turbo Trainer and rear wheel

Hi, A basic turbo trainer replicates riding on the flat on a singlespeed. You need gears to vary cadence for a given power input. Used same/similar rear wheel as you already have (both quick release) is going to be the easiest. Training tyres FWIW are based on wheelchair / trailer tyres, but FWIW yo...
by sreten
2 Oct 2014, 11:06pm
Forum: Bikes & Bits – Technical section
Topic: Relationship between tire width and mudguards
Replies: 3
Views: 564

Re: Relationship between tire width and mudguards

Hi, It depends on the vagaries of the bike design and what limits tyre sizes. e.g. my road bike in on the limit regarding rear tyre size, due to the clearances to the chainstays, but it does still take mudguards, because its fitted with medium reach brakes. So its impossible to be precise IMO, excep...
by sreten
2 Oct 2014, 2:50am
Forum: Does anyone know … ?
Topic: Dog Tyred...........
Replies: 7
Views: 1766

Re: Dog Tyred...........

Hi,

Its the same rubber as all of Schwalbes budget tyres,
so for off road I'd presume its relatively hard.
SBC = Schwalbe Basic Compound.

rgds, sreten.
by sreten
2 Oct 2014, 2:23am
Forum: Bikes & Bits – Technical section
Topic: 700x35 wheels/tyres and TRP cx9s
Replies: 13
Views: 1073

Re: 700x35 wheels/tyres and TRP cx9s

Hi,

Is this a brake, or brake pad issue ? I'm confused as
to what changing the brakes is supposed to achieve.

Surely the same retardation on the same hill in
the same conditions with the same pads will
have the same effect ?

rgds, sreten.
by sreten
30 Sep 2014, 9:04pm
Forum: Bikes & Bits – Technical section
Topic: worth replacing cup/cone BB with sealed?
Replies: 6
Views: 630

Re: worth replacing cup/cone BB with sealed?

Hi,

At least replace the ball bearings if regreasing I'd of thought.

rgds, sreten.
by sreten
29 Sep 2014, 11:47pm
Forum: Bikes & Bits – Technical section
Topic: speed wobble - stem advice please
Replies: 16
Views: 1173

Re: speed wobble - stem advice please

Hi, I'm sorry but such a simplisitic cause and effect analysis is no excuse to put up with a poor bike position and backache. Most likely the stem position has nothing to do with it. I've never seen dire warnings that adjusting your bike to fit your preferences can cause instability, why should It ?...
by sreten
29 Sep 2014, 1:42am
Forum: Does anyone know … ?
Topic: adjust Saddle fore and aft
Replies: 10
Views: 1365

Re: adjust Saddle fore and aft

Hi,

For my cheap folder I set the saddle as aft as it will go, just to
get more reach to the bars. KOPS is the first thing to ignore
if the geometry doesn't work out, with no front adjustment.

rgds, sreten.
by sreten
29 Sep 2014, 1:12am
Forum: Bikes & Bits – Technical section
Topic: speed wobble - stem advice please
Replies: 16
Views: 1173

Re: speed wobble - stem advice please

Hi, Statistically you first guess at a cause is highly unlikely to be correct, though it may be. How do you know / presume your bike wouldn't wobble with the stem the other way up ? Why should the stem position have any causal effect on stability ? Why did the bike wobble in the first place ? Unbala...
by sreten
28 Sep 2014, 1:41am
Forum: Bikes & Bits – Technical section
Topic: 16" wheels ina 14" frame ?
Replies: 2
Views: 329

Re: 16" wheels ina 14" frame ?

Hi, Generally on a bike that fits you can't stop and remain in the saddle. So stopping and starting involves dismounting and mounting always. So saddle height is not the issue, step over height is the issue. http://sheldonbrown.com/video/start-stop.ogg I would assume the bigger wheels simply wont fi...