Search found 347 matches

by sreten
16 Nov 2014, 1:08am
Forum: Does anyone know … ?
Topic: % Grades of Climbs/Hills. What does it mean?
Replies: 69
Views: 5567

Re: % Grades of Climbs/Hills. What does it mean?

Hi, What a hill looks like on paper and its actual slope are very different. (Of course this does not apply to the perception of real physicists.) 8m in a 100m slope might not sound like much, but 11mph is 5 m/s so it would take you about 20 seconds to climb 8m, and in a minute climb 24m. Say an ave...
by sreten
15 Nov 2014, 11:50pm
Forum: Bikes & Bits – Technical section
Topic: Counterfeit Frames
Replies: 24
Views: 2115

Re: Counterfeit Frames

Hi, Arranging tests that your frame just survives and therefore breaks weaker frames doesn't tell you anything much. You don't expect two carbon frames of the same weight but one about half the price to be the same, and TBH the numbers don't look too bad. Quality control is the main worry, not the r...
by sreten
11 Nov 2014, 9:32pm
Forum: Bikes & Bits – Technical section
Topic: Chainring wear
Replies: 24
Views: 2756

Re: Chainring wear

Hi,

I think the chainrings will fine. They can look worn
due to the ramps etc that improve gear changing.

rgds, sreten.
by sreten
10 Nov 2014, 11:49pm
Forum: Does anyone know … ?
Topic: What influenced the drive side choice?
Replies: 34
Views: 2760

Re: What influenced the drive side choice?

I think it is because right hand screw threads are standardised and that is what you need to attach a sprocket to a hub on the RHS of a bike. The first safety bicycles did not (I think) have a freewheel BTW. cheers Hi, I'm sure you are completely correct in all respects. Freewheels were later than ...
by sreten
9 Nov 2014, 12:53am
Forum: Bikes & Bits – Technical section
Topic: China to UK ride
Replies: 13
Views: 1980

Re: China to UK ride

Hi,

Tyre liners are a waste of time with puncture protected tyres,
the tyres effectively have the liners built into the tyre.

rgds, sreten.
by sreten
4 Nov 2014, 2:26am
Forum: Bikes & Bits – Technical section
Topic: Cycling form - any recommendations please
Replies: 18
Views: 2654

Re: Cycling form - any recommendations please

Hi, One thing you don't get on a turbo is riding into a headwind, or in fact any sense of aero on the flat with no wind, which requires a far more aggressive body position, (i.e. further down) than you'd ever develop on a static trainer. The positions you adopt on the bars (I have similar bullhorns)...
by sreten
28 Oct 2014, 1:45am
Forum: Does anyone know … ?
Topic: Brompton saddle resists charm
Replies: 7
Views: 1059

Re: Brompton saddle resists charm

Hi, Well first you undo the front *, and put the rails back in the rear. Then you reattach the front, which should be relatively easy, as the rails have managed to pop out of the rear, so it is bent. So after the the two stages above, you need to apply some brute force to straighten the rails, the m...
by sreten
28 Oct 2014, 12:12am
Forum: Bikes & Bits – Technical section
Topic: Pedal Clunk
Replies: 9
Views: 1165

Re: Pedal Clunk

Hi,

Are we talking about a brand new pair of pedals for £7 and
one of them doesn't work properly, and you want to fix it ?

Get real, insist on new replacements, and then have a go
at fixing it if you really want to, if you can spare the time.

rgds, sreten.
by sreten
27 Oct 2014, 11:22pm
Forum: Bikes & Bits – Technical section
Topic: 24" x 28mm tyres
Replies: 2
Views: 798

Re: 24" x 28mm tyres

Hi, Be precise about the rim size you want, 507, 520 or 540/541. (As 540/541/600A are essentially the same rim size.) http://www.sjscycles.co.uk/tyres-24-(507)-dept344_pg1/ This is the MTB version of rims for a 24" tyre http://www.sjscycles.co.uk/tyres-24-(520)-dept948_pg1/ This is obcure high ...
by sreten
18 Oct 2014, 11:05pm
Forum: Bikes & Bits – Technical section
Topic: Carrera TDF (Virtuoso) tyre size?
Replies: 1
Views: 927

Re: Carrera TDF (Virtuoso) tyre size?

Hi,

" there’s clearance and eyelets both for mudguards and for a rear rack. "

So quite probably with the right guards you could go to 28mm.

rgds, sreten.
by sreten
12 Oct 2014, 12:25am
Forum: Bikes & Bits – Technical section
Topic: Brompton lower-pressure tyre
Replies: 7
Views: 1083

Re: Brompton lower-pressure tyre

Hi, A bike with 16" wheels is never going to be good on the rough stuff, ever. Still if you never use it on the road fitting fatter tyres might help. http://www.sjscycles.co.uk/tyres-16-(305)-dept339_pg1/#page=1&page=1&order=PRICE ASCENDING Run the front significantly lower pressure tha...
by sreten
8 Oct 2014, 11:36pm
Forum: Bikes & Bits – Technical section
Topic: First bought a coffin, now a BSO folder!
Replies: 23
Views: 3391

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

Hi, There is nothing BSO about the bike that you have, other than its not a Brompton, or any of the other premium brands, its simply a bike decently built to a price. A BSO is a full suspension MTB for £100, its impossible to decently build it at the price, and tellingly impossible to build a decent...
by sreten
8 Oct 2014, 10:34pm
Forum: Bikes & Bits – Technical section
Topic: Schwalbe Marathon or Marathon Plus
Replies: 4
Views: 653

Re: Schwalbe Marathon or Marathon Plus

I've been told to go for the plus with a Tern and that is currently what is fitted to it now, they just need replacing as they are starting to go bald, but I'm no expert I'm just going by what the experts have told me :wink: Hi, Put the front on the back, buy a new front. Rinse and repeat. Note tha...
by sreten
8 Oct 2014, 10:29pm
Forum: Bikes & Bits – Technical section
Topic: Schwalbe Marathon or Marathon Plus
Replies: 4
Views: 653

Re: Schwalbe Marathon or Marathon Plus

Hi,

That would be the Plus, durability is about the same, the Plus has higher puncture protection.

rgds, sreten.
by sreten
8 Oct 2014, 10:11pm
Forum: Bikes & Bits – Technical section
Topic: A question of steel?
Replies: 21
Views: 1827

Re: A question of steel?

Its not so terrible, more a nick to be honest. Hi, A nick where ? Seatstay or chainstay ? What frame failure could it cause realistically ? How much in reality is your frame really compromised ? How much does it really need fixing ? Given that at 10st the frame by default can cope with ~ double tha...