Search found 356 matches

by GrumpyGit
10 Aug 2019, 12:35pm
Forum: Does anyone know … ?
Topic: Why CO2?
Replies: 33
Views: 1554

Re: Why CO2?

st599_uk wrote:Surely using hydrogen would make the bike lighter.


Yes but helium would be less likely to result in spontaneous combustion!
by GrumpyGit
10 Aug 2019, 9:54am
Forum: Does anyone know … ?
Topic: Why CO2?
Replies: 33
Views: 1554

Re: Why CO2?

I asked this very question a couple or so years ago. Basic answer, is that there's a ready supply of CO2 as it's used in the drinks trade for one thing and cheap to produce too. So my chicken / egg theory wasn't far off, the cylinders already existed for those soda syphon gadgets & someone buil...
by GrumpyGit
10 Aug 2019, 8:23am
Forum: Does anyone know … ?
Topic: Why CO2?
Replies: 33
Views: 1554

Re: Why CO2?

You can't compress nitrogen as much as Co2, the canisters would be a lot bigger. Will you need a full canister on those little wheels though? Good point on the compression level, I hadn't considered that. Everything I've read suggests that a 16g canister does the job adequately without grossly over...
by GrumpyGit
10 Aug 2019, 8:01am
Forum: Does anyone know … ?
Topic: Why CO2?
Replies: 33
Views: 1554

Why CO2?

This is more of a "chat over a cuppa" than an "issue", I've been pondering why tyre inflators use CO2. I had an N+1 moment earlier this year and a Brompton has joined the family. In "normal" use, if I get a flat I'll just fold it up, get on a bus or the underground and ...
by GrumpyGit
28 May 2019, 5:11pm
Forum: Does anyone know … ?
Topic: Cyclesurgery Highbury?
Replies: 6
Views: 615

Re: Cyclesurgery Highbury?

That's very interesting, thank you.

I'll have to stop buying bicycles, I may be carrying a curse. London Fields Cycles closed down shortly after I bought my Gazelle from them. :oops:
by GrumpyGit
28 May 2019, 11:53am
Forum: On the road
Topic: Grrr - Lidl replaces Sheffield stands with Wheel Benders
Replies: 43
Views: 2037

Re: Grrr - Lidl replaces Sheffield stands with Wheel Benders

brynpoeth wrote:I have seen that too, the cycle could just be lifted and taken away :?


Didn't a former Prime Minister once loose a bike that way?

Just shows a top rank university education is no proof of intelligence!
by GrumpyGit
28 May 2019, 11:26am
Forum: Does anyone know … ?
Topic: Cyclesurgery Highbury?
Replies: 6
Views: 615

Re: Cyclesurgery Highbury?

UPDATE

I've just received a tweet from CycleSurgery.

Seems they're having an "issue" with the landlord!
by GrumpyGit
28 May 2019, 11:11am
Forum: Does anyone know … ?
Topic: Cyclesurgery Highbury?
Replies: 6
Views: 615

Re: Cyclesurgery Highbury?

Ah, that might be it. It would be a shame as CycleSurgery started less than 100 yds from the site of that shop!

Thanks!
by GrumpyGit
28 May 2019, 10:55am
Forum: Does anyone know … ?
Topic: Cyclesurgery Highbury?
Replies: 6
Views: 615

Cyclesurgery Highbury?

It's time for my new Brompton to go back to the shop for its 100 (ish) mile checkup.

Tried to contact Cyclesurgery, Holloway Rd this morning only to find they're closed.

Does anyone know what's happened???
by GrumpyGit
31 Mar 2019, 4:38pm
Forum: On the road
Topic: A London question
Replies: 3
Views: 880

A London question

A two parter really: #1 How in the name of J.K. Starley did the appalling CS1 qualify as a Cycleway? It's a meandering collection of motor vehicle infested rat-runs with a few bicycle symbols painted on the tarmac. Compared to the (few) direct, protected cycleways its total rubbish. #2 How can we ge...
by GrumpyGit
26 Mar 2019, 8:58am
Forum: Does anyone know … ?
Topic: Brompton roller wheels?
Replies: 4
Views: 1624

Re: Brompton roller wheels?

Does this help? Doesn't say anything about increasing the wheel size having an effect on the seat post acting as a locking mechanism. The blog I linked to in that topic contains the following quote One of the downsides to this mod [80mm inline skate wheels] though is that the rubber bung on the sea...
by GrumpyGit
25 Mar 2019, 8:37am
Forum: Does anyone know … ?
Topic: Brompton roller wheels?
Replies: 4
Views: 1624

Re: Brompton roller wheels?

Does this help? Doesn't say anything about increasing the wheel size having an effect on the seat post acting as a locking mechanism. I'll probably leave well alone for the time being. I've got enough work to do protecting vulnerable areas of the frame with "Helicopter" tape. I'm quite su...
by GrumpyGit
24 Mar 2019, 10:10am
Forum: Does anyone know … ?
Topic: Brompton roller wheels?
Replies: 4
Views: 1624

Brompton roller wheels?

I thought about replacing the rack mounted roller wheels on my Brompton with larger (inline skate) ones BUT I read that doing so risks heel strike when pedaling and stops the seatpost from locking the whole folded package together. Have any of you tried this and (if so) what are your thoughts on the...
by GrumpyGit
24 Mar 2019, 9:45am
Forum: Does anyone know … ?
Topic: What folding bike for target price £400 ?
Replies: 14
Views: 2479

Re: What folding bike for target price £400 ?

I've got a used Raleigh stowaway Just to note that Raleigh buy the folding frames from Dahon (largest folding frame manufacturer in the world). Tern was set up by the ex wife of David Hon (with her son) in competition to her ex (sounds like a messy divorce!). I've had a 7 speed Dahon Jack for 11 ye...
by GrumpyGit
9 May 2018, 12:45pm
Forum: On the road
Topic: A421 cycle lane
Replies: 8
Views: 775

Re: A421 cycle lane

If you want to ride to places along but not on the current A421, I suggest some combination of National Route 51 Bedford-Gt Barford-Blunham-Sandy (a former railway so pretty direct), NR 12 Gt Barford-Roxton-St Neots and National Byway Blunham-Foxton (for Cambridge). We've ridden the stretch between...