Search found 128 matches

by Pneumant
17 Dec 2018, 7:31pm
Forum: Bikes & Bits – Technical section
Topic: Brompton saddle height adjustment tube
Replies: 6
Views: 534

Re: Brompton saddle height adjustment tube

Might be for the best to fit a new shim. Part detailed below, solitary review of this part recommends an 'alternative' to the factory adhesive, Brompton also recommend reaming of the seat-tube by a dealer prior to fitting. The review says that this was not necessary. https://brilliantbikes.co.uk/bro...
by Pneumant
15 Dec 2018, 6:28pm
Forum: Bikes & Bits – Technical section
Topic: Brompton saddle height adjustment tube
Replies: 6
Views: 534

Re: Brompton saddle height adjustment tube

What you have actually removed is the brompton seatpost shim, this is bonded into the frame and your seatpost won't stay in position without it! You will need to bond this essential part back in place. Don't even think of clamping up the seatpost without this part fitted!! The height insert can only...
by Pneumant
30 Nov 2018, 4:33pm
Forum: Bikes & Bits – Technical section
Topic: N+1: Opportunity of a Lifetime
Replies: 72
Views: 2138

Re: N+1: Opportunity of a Lifetime

Hope roubaix does not mind the thread drift, maybe it could be split off I'm very chilled - nothing could break my Zen given that I'm off to order my new bike tomorrow :D But perhaps if people genuinely want to discuss the history of electronic shifting, they might enjoy it on their own thread? I'l...
by Pneumant
20 Nov 2018, 8:32pm
Forum: Does anyone know … ?
Topic: Your Favourite Saddle
Replies: 60
Views: 2425

Re: Your Favourite Saddle

These fine saddles are fitted to my various bikes. A good mix of comfortable anatomic 80's/90's goodness! San Marco Rolls - good supportive saddle, rails can sag/fail with age. Selle Italia Turbo - as above, perhaps not quite as comfortable, better made than the Rolls. Selle Italia Oktavia - very co...
by Pneumant
5 Sep 2018, 8:41pm
Forum: Bikes & Bits – Technical section
Topic: Brompton Gears Relative (In)Efficiency
Replies: 9
Views: 446

Re: Brompton Gears Relative (In)Efficiency

Broms go best with the tyres pumped up hard (Marathon's 75+psi) and held in 2nd (direct) gear where you can. Reducing the hub sprocket by a couple of teeth also helps customise the direct gear to suit your riding style / terrain. Compared to regular bikes Broms are more effort to ride and definitely...
by Pneumant
28 Jul 2018, 8:17pm
Forum: Does anyone know … ?
Topic: Shropshire union canal.
Replies: 9
Views: 498

Re: Shropshire union canal.

+1 Waverton to Chester is fine, I used to car/cycle commute this whilst temporarily working in Chester 3-years ago. I parked up in Waverton and enjoyed the easy 3-mile ride along the towpath, it is narrow in places, the surface being variable ( a bit slippy in the wet if you venture onto the flags c...
by Pneumant
21 Jul 2018, 7:57pm
Forum: Bikes & Bits – Technical section
Topic: Elliptical chainring.... suppliers
Replies: 14
Views: 759

Re: Elliptical chainring.... suppliers

I have a 38T 110BCD alloy ring, not biopace but the Sugino equivalent (I think) so orientated differently. Back in 1988 when I had a bike with these rings I found myself freewheeling at any given opportunity, I also found it hard to maintain an even cadence. The chain 'bob' caused by the rings also ...
by Pneumant
3 Jun 2018, 8:47pm
Forum: Bikes & Bits – Technical section
Topic: Painting with Hammerite smooth paint
Replies: 10
Views: 984

Re: Painting with Hammerite smooth paint

I would not bother as Hammerite type paint is expensive and takes an absolute age to cure. It appears to be dry but remains very soft until cured. The results of this thick paint are hit and miss in my experience and you will be forever touching up as it likes to 'chip' when eventually cured! A much...
by Pneumant
3 Jun 2018, 8:36pm
Forum: Bikes & Bits – Technical section
Topic: Saddle knowledge
Replies: 8
Views: 434

Re: Saddle knowledge

I have a real affection for these 1980's saddles. Good full design, comfortable and easy to move around on. I have Rolls & Turbo saddles fitted to four of my fleet. As mentioned the Rolls has weak saddle rails which can bend or break (I have experienced both). Rolls saddles used to be good value...
by Pneumant
20 Mar 2018, 7:28pm
Forum: Bikes & Bits – Technical section
Topic: Cheap as chains? Or too cheap?
Replies: 27
Views: 2182

Re: Cheap as chains? Or too cheap?

Good old Wilko. I actually popped in for a packet of Jakemans Peppermint Mints & a can of pop last Thursday & came across these hidden bargains following my usual perusal of the bike stuff. Too good to pass over so I purchased four of the 1-3 speed chains priced at 50p each :shock: . They ar...
by Pneumant
19 Mar 2018, 6:52pm
Forum: Bikes & Bits – Technical section
Topic: Grease Guns, lube ports and grease nipples
Replies: 47
Views: 10674

Re: Grease Guns, lube ports and grease nipples

This post is brilliant - grease guns rock!
Here are mine:
1) Draper
2) Mighty Midget
3) Oregon chainsaw grease gun - most useful as very small, but an absolute pig to replenish with grease, actually I use the big Draper for that job and it does seem strange to use a grease gun to fill a grease gun?
by Pneumant
10 Mar 2018, 8:04pm
Forum: Does anyone know … ?
Topic: Relieving turbo tedium
Replies: 35
Views: 2328

Re: Relieving turbo tedium

MP3 players are soooo nineties. Why bother to faff about buying an mp3 player, ripping cds, downloading mp3 tracks etc. when, if you have a computer or a tablet or a smartphone (or even an app on your modern, smart telly), you can access all of the world's music for a few pounds a month via a strea...
by Pneumant
4 Mar 2018, 4:30pm
Forum: Does anyone know … ?
Topic: Is Acetal a suitable material for a hub axle?
Replies: 37
Views: 2395

Re: Is Acetal a suitable material for a hub axle?

As the OP I can confirm that my friend has abandoned any thoughts of birthing an axle using Acetal. However this thread is generating some good debate leading to me pondering what is Acetal actually good for? This site https://www.amcopolymers.com/resin-families/acetal mentions typical applications ...
by Pneumant
1 Mar 2018, 7:34pm
Forum: Does anyone know … ?
Topic: Is Acetal a suitable material for a hub axle?
Replies: 37
Views: 2395

Re: Is Acetal a suitable material for a hub axle?

Many thanks to everyone who responded & this is no joke enquiry! I also told my friend that I thought this material was not up to the job. There was no engineer's recommendation to my friend for Acetal either. I reckon it is easy to be misled by claims that Acetal '.....bridges the gap between m...
by Pneumant
28 Feb 2018, 8:31pm
Forum: Does anyone know … ?
Topic: Is Acetal a suitable material for a hub axle?
Replies: 37
Views: 2395

Is Acetal a suitable material for a hub axle?

A friend is considering having a Mavic 501 wheel hub axle made up using a material called Acetal. I looked up Acetal and it is some sort of high strength polymer. My query is would this be up to the job? Is he being foolish to even consider this as opposed to using aluminium (the original axle mater...