Search found 846 matches

by freiston
30 Jul 2021, 12:18am
Forum: Bikes & Bits – Technical section
Topic: Pump question
Replies: 3
Views: 196

Re: Pump question

I don't know what the Blackburn pump head is like and I hope I'm not teaching you to suck eggs but one push-on pump that I have has (as well as a reversible rubber grommet to convert the head from presta to schrader) a plastic insert behind the rubber grommet that also has to be reversed - could it be something like that? Otherwise, I suspect a bent core, the pump head not pushed far enough over the valve, the pump not being held "straight" or a combination of the last two.
halfords push fit pump.JPG
by freiston
25 Jul 2021, 11:53pm
Forum: Bikes & Bits – Technical section
Topic: Cinelli 1R bar clamp bolt
Replies: 71
Views: 1192

Re: Cinelli 1R bar clamp bolt

Jdsk wrote: 25 Jul 2021, 10:53pm
freiston wrote: 25 Jul 2021, 10:41pmMy screw and bolt provider of choice (Accu) consider a bolt to be driven via the outside of its head and a screw to be driven via the inside of the head (so if it needs a key or a screwdriver, it's a screw and if it needs a spanner, it's a bolt).
interesting, isn't it? And totally different from "threaded to the head or not" or "goes into nut or goes into material".

"There is no universally accepted distinction between a screw and a bolt."

Jonathan
Yes, it is interesting. I do like their closing sentence:
"The best way to avoid confusion is to avoid guesswork, and refer to product specifications. Many components are manufactured according to strict manufacturing standards, which clearly define specific component dimensions such as head type, thread type, and thread length"

I couldn't find any M7 socket cap head screws on their pages - they will custom manufacture but I don't think they'd do a one-off :lol:

I do hope Mick gets what he needs.

When I had a little project involving camera tripod fittings, to make life easy, I ended up buying a 1/4" x 20 UNC tap. I don't think I would like to tap a new thread into a quill stem clamp though.
by freiston
25 Jul 2021, 10:41pm
Forum: Bikes & Bits – Technical section
Topic: Cinelli 1R bar clamp bolt
Replies: 71
Views: 1192

Re: Cinelli 1R bar clamp bolt

The way I've understood it is that a bolt fastens with a nut - if it fastens into a captive threaded hole or by tapping a thread, then it's a screw. Typically a bolt will go through a non-threaded hole hence it typically only needs a thread at the end - and so is more likely not to be fully threaded.

My screw and bolt provider of choice (Accu) consider a bolt to be driven via the outside of its head and a screw to be driven via the inside of the head (so if it needs a key or a screwdriver, it's a screw and if it needs a spanner, it's a bolt). They also have quite a lot of information on the subject including a legal and taxation differentiation between bolt and screw in the USA (the USA definitions are more or less the same as my understanding of the difference):
https://www.accu.co.uk/en/p/131-differe ... -and-bolts
by freiston
25 Jul 2021, 9:32pm
Forum: Does anyone know … ?
Topic: drop bars - cable channels
Replies: 19
Views: 667

Re: drop bars - cable channels

simonineaston wrote: 25 Jul 2021, 8:59pm Same topic, different aspect. You folks who use bar-end shifters, how do you run the shifter cable? Specifically, where does the cable break out of the wrap? Do you route the cable snug up to the 'bar all the way to the stem end of the wrap, or do you have it emerge half way along in an effort to create gentler radii for the cable run?
I feel that I should have it emerge at the bottom of the bends but I just can't bring myself to do it (something about the aesthetics bothers me). I run mine under the bottom of the drop, on the inner side of the bar at the brake lever and then running alongside the brake cable under the flats to come out where the bar tape finishes. When in indexed mode, I have had some minor issues with gear changing but I can't be sure whether they were due to cable run/housing/muck, hanger alignment or adjustment/lever slip. I've been in pure friction mode for a couple of years now and still occasionally get the odd ghost or sluggish shift - they are rare though - probably my technique. I've checked the alignment of the hanger and it seemed ok. It's certainly rare enough for it not to bother me.
by freiston
25 Jul 2021, 2:34pm
Forum: Does anyone know … ?
Topic: drop bars - cable channels
Replies: 19
Views: 667

Re: drop bars - cable channels

simonineaston wrote: 25 Jul 2021, 12:29pm Postscript: Planet X have those Shimano cable doo-dads on clearance offer at the mo'... see here - a situtation I noticed shortly after ordering a pair off of fleabay at the non-discounted price... :roll:
The SJS link in slowster's post gives the price at 0.99 - half that of the Planet X clearance offer
by freiston
24 Jul 2021, 5:42am
Forum: Bikes & Bits – Technical section
Topic: Track pump advice?
Replies: 17
Views: 487

Re: Track pump advice?

Slothman wrote: 22 Jul 2021, 2:10pm Anyone have experience regarding the Lifeline Professional? https://www.wiggle.co.uk/lifeline-profe ... lsrc=aw.ds
I have one, bought just over two years ago for £25 in a sale. I replaced my Aldi track pump with it (the Aldi plastic handle broke). I find that it does the job well and seems very "tough" - not going to break easily. The chuck is very good too. I don't think any of the seals/piston washers are replaceable though (except for the visible O rings on the chuck Presta/Schrader adapter) - I can't see a way of getting to them. I don't use my pump often - only to top up my two bikes (tourer about 65-70 psi and folder about 40 psi) and the odd puncture (more other people's than my own). I like the pump and I'm happy with it. When out and about, I take a Lezyne Micro Floor Drive HV with gauge.
by freiston
17 Jul 2021, 10:44pm
Forum: The Tea Shop
Topic: Pictures of your bike(s)
Replies: 1731
Views: 487642

Re: Pictures of your bike(s)

CyberKnight wrote: 17 Jul 2021, 7:38pm still love my boardman from 2011 , i had the white road comp which i had resprayed last year by an auto spray painters my choice was white , grey or JCB ,,,,,
finished1.jpg
Back in the eighties, my bike was a similar yellow - exactly the same shade as the lorries where my dad was the painter/sprayer :D
by freiston
5 Jul 2021, 5:13pm
Forum: Does anyone know … ?
Topic: Brooks etc.....
Replies: 45
Views: 1447

Re: Brooks etc.....

"Those who know, do not say;
Those who say, do not know."

Lao-tzu
by freiston
5 Jul 2021, 4:25pm
Forum: Does anyone know … ?
Topic: Is your bottle clean? I wouldn't bidon it...
Replies: 33
Views: 1246

Re: Is your bottle clean? I wouldn't bidon it...

On the bike I use Ion8 leak-proof bottles and they are easily washed in the sink with the other washing up: their design makes them easy to clean and not so susceptible to mould growth. If my bottles or my camelbak bladder/tube need a proper debugging, I use either baby bottle steriliser or VWP (which I use for home-brewing), whatever is to hand - so usually VWP.

This next bit sounds like a sales pitch but I am a big fan of the Ion8 bottles. They don't have valves but a drinking/pouring hole and a small air hole to allow pouring. The lid, with spring-loaded hinge and locking latch mechanism, has seals for both holes that press against the holes when the lid is shut. The lid also means that you're not going to get crap off the road onto the "nozzle". They come in different sizes and have volume markings on the side (can be handy for mixing up dehydrated food when camping). The bottles are rigid not squeezy and you pour rather than suck to drink the liquid. They are very tough and have withstood being dropped from the bike at speed without spilling a drop. They don't work well with all bottle cages though - that's how I came to drop one off the bike but I replaced my cages with Zefal Pulse Full Aluminium Bottle Cages and have no problems now.
ion8_2.JPG
by freiston
2 Jul 2021, 10:14pm
Forum: Does anyone know … ?
Topic: Wireless cateye interference.
Replies: 14
Views: 627

Re: Wireless cateye interference.

It's not just lights that can interfere with them. I used to use a Cateye Micro Wireless computer . My LED dynamo fork crown mounted front light didn't affect it but my [smart]phone did if I had it in the handlebar bag. I first noticed that when I slowed down or sped up, the current speed indicator was not changing accordingly and was reporting obviously incorrect speeds. After a trip, the distance, average and maximum speeds were obviously wrong (it was rare to have a ride with my maximum speed showing less than 60mph). I never experienced it resetting anything to zero.

Other than that, I found it really difficult to use on account of the very fiddly button pushes - so fiddly that I gave up using it. I replaced it with a wired Cateye Velo 7 which I find much better and not affected by interference at all.
by freiston
14 Jun 2021, 8:17pm
Forum: Does anyone know … ?
Topic: ….Most effective body position for tailwind
Replies: 22
Views: 980

Re: ….Most effective body position for tailwind

531colin wrote: 14 Jun 2021, 5:45pm
freiston wrote: 14 Jun 2021, 11:35am I remember as a kid, there was a particular road on the way home from school that sometimes funnelled the wind so that we had a very strong tailwind. On our bikes, we would unzip our parka or snorkel coats, sit upright and hold the corners out and sail "no handed" down the road. I don't think I have the nerve or the balance to try that now.
you know you want to......
:D A couple of weeks ago, returning home on my folding bike, the local kids playing in the street shouted out something on the lines of "Oi mister, do a wheelie", so I obliged. I didn't get very far before the back wheel was further forward than the front wheel but I had been wanting to do that for ages too.
by freiston
14 Jun 2021, 4:12pm
Forum: Bikes & Bits – Technical section
Topic: How often should one change one's D lock?
Replies: 22
Views: 953

Re: How often should one change one's D lock?

chris_suffolk wrote: 14 Jun 2021, 3:29pm Reading all the above, nobody has given any reasons, other than damage, as to why a lock needs replacing. The original question suggested that the OP thought there was a timescale rather then being forced into replacing because of loss or damage, which can happen anytime and isn't really a timescale.
I saw damage, stopped working, lost key, worn out (so that it is no longer secure) as reasons given. The OP replied in the 4th post that he thought they might have vulnerabilities discovered as thieves get more devious - that was replied to comprehensively by mjr.
by freiston
14 Jun 2021, 11:35am
Forum: Does anyone know … ?
Topic: ….Most effective body position for tailwind
Replies: 22
Views: 980

Re: ….Most effective body position for tailwind

I remember as a kid, there was a particular road on the way home from school that sometimes funnelled the wind so that we had a very strong tailwind. On our bikes, we would unzip our parka or snorkel coats, sit upright and hold the corners out and sail "no handed" down the road. I don't think I have the nerve or the balance to try that now.
by freiston
11 Jun 2021, 11:58pm
Forum: Bikes & Bits – Technical section
Topic: Hub dynamo with capacitor in light
Replies: 25
Views: 1087

Re: Hub dynamo with capacitor in light

robc02 wrote: 11 Jun 2021, 10:15am Very clever! I wonder what rate of deceleration is needed to trigger it. Would it, for instance be triggered when being slowed down at the foot of a steep hill? I suppose that might not be a bad thing though.

I don't suppose most other road users would recognise it as a brake light but it might serve to draw a bit of extra attention which could be beneficial.
I have such a rear light (this one) but I cannot report on its effectiveness because, try as I might, I find it impossible to watch the light whilst braking.
by freiston
29 May 2021, 12:45am
Forum: Does anyone know … ?
Topic: good gilit needed
Replies: 2
Views: 1268

Re: good gilit needed

I have a Decathlon gilet that I find good. It's not a cycling-specific one but marketed for "trekking" and is quilted. I just took a look at their website and they've got two Forclaz Trek 100 gilets that are different garments and different prices despite their names being the same. I've got the £15 one (reduced from £20) with square quilting. The zip often goes down as I go uphill and it often goes up as I go downhill :wink:
I don't know if you're looking for something more wind-resistant and less padded (or otherwise) but they've got loads of different styles with varying degrees of insulation and wind resistance

Here's the one I've got:
https://www.decathlon.co.uk/p/men-s-mou ... R-p-176974

and here's the other (more expensive) one:
https://www.decathlon.co.uk/p/men-s-mou ... R-p-312531