Search found 132 matches

by Tompsk
24 Jul 2021, 7:51am
Forum: Bikes & Bits – Technical section
Topic: Help with replacing crankset and BB
Replies: 27
Views: 769

Re: Help with replacing crankset and BB

If the bike is new the original shop should be responsible to sort the problem rather than you having to spend money to fix it.

Edit, typo.
by Tompsk
19 Jul 2021, 7:18pm
Forum: Bikes & Bits – Technical section
Topic: 40T Cassette On A Road Bike
Replies: 45
Views: 1231

Re: 40T Cassette On A Road Bike

Mick F wrote: 19 Jul 2021, 5:16pm Why are triples out of fashion?

Simple really.
Three sets of gears.
Rear cassette is one set, and using three chainrings gives another two sets using the same cassette.
What's not to like?
Double chainsets may be living on borrowed time too. The multi sprocket cassette is king, the more cogs the better...
by Tompsk
16 Jul 2021, 5:34pm
Forum: The Tea Shop
Topic: Are Ribble still trading ?
Replies: 18
Views: 709

Re: Are Ribble still trading ?

Ribble are spending loadsa money on prime time TV during the ad breaks of the Tour highlights program. So perhaps new owners heading in a new direction? The ads claim history going back over 120 years, I wasn't aware they were that old.
by Tompsk
16 Jul 2021, 5:16pm
Forum: The Tea Shop
Topic: MOT Motorcycle
Replies: 21
Views: 612

Re: MOT Motorcycle

NATURAL ANKLING wrote: 16 Jul 2021, 4:52pm Hi,
Has anyone ever been asked for a deposit to book an Mot over the phone?
Do you need to pay up front if you were to book online?

Just wondered as mot station wanted 50% deposit................

What information does mot station have access to.....................does it have access to your address etc?
Not heard of that, they may have been let down previously. Not sure if Covid precautions means it takes longer to do an MOT so a missed booking has more of an impact on income.

MOT stations are connected to an online system which logs times, result and other details 'live', so the garage may be able to see registered users details via the DVLA.
by Tompsk
3 Jul 2021, 12:48pm
Forum: Touring & Expedition
Topic: CTC Holidays and Tours to Cease Trading
Replies: 49
Views: 2535

Re: CTC Holidays and Tours to Cease Trading

simonhill wrote: 3 Jul 2021, 11:41am
It is sad to see the CTC Tours go...
Agree with your post and the sentiment that 'CTC' holidays will sadly no longer exist. However, reading the full statement on the cycling holidays website linked to in the OP suggests that the holiday company is being wound up but CUK will partner up with 3rd parties to offer cycle holidays. Perhaps these partners will be tour leaders of old that went independent that CJ mentioned???
by Tompsk
3 Jul 2021, 11:28am
Forum: Does anyone know … ?
Topic: Tyre on the wrong way round
Replies: 32
Views: 1496

Re: Tyre on the wrong way round

IIRC (for car tyres) directional tyres optimise the grip for braking performance, so will be the 'same' front and back. This may make a difference in wet or loose conditions more than on dry tarmac. On dry tarmac the best grip is with no tread, i.e. slick tyres. The directional tread patterns I have seen on bicycle tyres always seem to 'point forwards' when viewed at the top of the wheel, if correctly mounted.
by Tompsk
2 Jul 2021, 11:06pm
Forum: Touring & Expedition
Topic: CTC Holidays and Tours to Cease Trading
Replies: 49
Views: 2535

Re: CTC Holidays and Tours to Cease Trading

The following is on their page today:

"In 2020 we completed a refresh of our operating model to reinforce the support we provide to our Tour Managers and therefore to you our customers. Covid 19 made this restructure timely and we have been able to launch our competitively priced holidays with renewed confidence, maintaining the best of the old whilst embracing the demands of the new.  We look forward to welcoming you soon."

(My emphasis). In fact so 'confident' that they are now ceasing trading.

Edit, update based on info found.
by Tompsk
26 Jun 2021, 6:43pm
Forum: Does anyone know … ?
Topic: Breaking force
Replies: 65
Views: 2181

Re: Breaking force

There is high mechanical advantage with discs from the lever to the pads but this is reduced by a factor of about 4 as a 160mm disc is about 1/4 the diameter of a 700c or 29" wheel. So with disc brakes the force at the surface of the tyre can be about 25% of the force at the disc. With rim brakes the force at the surface of the tyre is about 95% of that at the rim (both for 700c wheels and 30mm ish tyres). Try (carefully!) stopping a slowly turning wheel by touching the rim and disc and you will get a sense of the forces and heat involved. Overall the mechanical advantage from the lever to the road is better with disc brakes.

Correctly set up (modern) rim and disc brakes can easily lock up a wheel even in the dry so both are equaly capable in that sense. If the rider has weaker hands then discs may be better.

For smaller wheeled bikes there is less rim to soak up the heat so they will get hotter, discs will gain there and as a 160mm disc is a better size ratio to the smaller wheel you should get 50%(?) of the brake force delivered to the surface of the tyre :-)

(Correction to avoid implying locking a wheel is a good thing)
by Tompsk
23 Jun 2021, 6:29pm
Forum: Cycling UK Topics and Discussions
Topic: AA for cycling
Replies: 14
Views: 1040

Re: AA for cycling

mjr wrote: 23 Jun 2021, 5:12pm
Philip Benstead wrote: 23 Jun 2021, 11:27am Any views on this?


https://www.cyclinguk.org/press-release ... s-launched
How do you find them when you break down?
Quite! So not like the AA, that the press release claims. This seems more like random support or 'bicycle repair man' and Monty Phython got there first with that idea. I hope the volunteers were able to do some good work and help people out.
by Tompsk
23 Jun 2021, 1:19pm
Forum: Cycling UK Topics and Discussions
Topic: AA for cycling
Replies: 14
Views: 1040

Re: AA for cycling

Philip Benstead wrote: 23 Jun 2021, 11:27am Any views on this?


https://www.cyclinguk.org/press-release ... s-launched
I think the CTC once published a list of volunteers who would come out and help members who needed assistance. Not 100% sure on the details or when this fell by the wayside?
by Tompsk
3 Jun 2021, 8:10pm
Forum: Does anyone know … ?
Topic: Lightweight chains
Replies: 19
Views: 925

Re: Lightweight chains

As has been mentioned for many cycle components:

Light, cheap, strong - pick 2 of these and the one remaining is the thing it won't be.
by Tompsk
3 Jun 2021, 5:33pm
Forum: Does anyone know … ?
Topic: Lightweight chains
Replies: 19
Views: 925

Re: Lightweight chains

I have sern Litelok on-line which I think is a braded steel hoop and lighter than a U lock. They do a gold and silver secure version in different lengths. I've no experience (or connection) with them, haven't seen one in the flesh either. From reviews the gold level lock is stiffer than the silver. I think they are around £75.
by Tompsk
1 Jun 2021, 8:05am
Forum: Bikes & Bits – Technical section
Topic: How to eliminate Dandelions From the Yard
Replies: 20
Views: 1997

Re: Seat post protrusion?

Thank you for the last couple of helpful replies, very informative.

I had a look on some vintage parts web sites, some of the seat posts have a short post with 3/4 fluted leaving what looks like about 2" max to be inserted into the frame.
by Tompsk
31 May 2021, 6:14pm
Forum: Bikes & Bits – Technical section
Topic: How to eliminate Dandelions From the Yard
Replies: 20
Views: 1997

Re: Seat post protrusion?

zenitb wrote: 31 May 2021, 5:07pm
Tompsk wrote: 29 May 2021, 8:20am I think having any seatpost below where the seat tube is butted has little effect. ...
hmm.. I thought that usually the seat tube is single butted Tom so surely you would not be able to get the seatpost "below where the seat tube is butted" ?


single butted.JPG


Or were you thinking of double butted tubing ? My understanding (ok from Tony Oliver's very old book) is that a single butted seat tube is used and best practice is to ream it out after brazing to correct any heat distortion of the tube. Whether this still happens on modern TIG welded frames I am unsure .. maybe someone can chip in ... :-)
Yes, double butted as in DB main tubes on a higher quality 531 frame (showing my age there). Obviously inserting a seat post beyond the butting on a single butted seat tube could be a rather one way process!
by Tompsk
30 May 2021, 6:33pm
Forum: Does anyone know … ?
Topic: Where are all the cassettes?
Replies: 62
Views: 3221

Re: Where are all the cassettes?

gaz wrote: 30 May 2021, 10:33am
Tompsk wrote: 29 May 2021, 8:42pmNot many would aspire to 8 speed ...
Happy to count myself in that number. Stripped down n earlier this year ready for rebuild on a pre-loved frame. Since n had 8 speed shifters I decided it was probably time I matched them to an 8 speed cassette.

Fortunately I was able to find a suitable cassette, albeit no bargain and possibly at an inflated price.

Reluctant to stock up until I'm sure my chosen ratios will work for me. There's still a lot of other kit required before I begin my build.
Perhaps I should have said "if you believe what you read, not many aspire to 8 speed."

I have bikes with SA3, 3x7/8, 3x9 and 2x10 speeds and my wife a 3x 8 speed. The 3x7 bike has the set up I'm comfortable with, I find I'm often cross chained to get the wanted gearing with a 50/34 & 11ish-30ish type systems. I have adapted my 2x system where I can but it doesn't hit the sweet spot of the 3x7/8. The 3x9 doesn't seem to offer me any more & I may change that one to a 3x 8 too.

Back to the OP comment; I think cassettes are harder to find and more expensive at the moment. I suspect when manufacturing for individual (retail) cassettes is ramped up the higher number versions (11 & 12 speed) will get priority (to maximise profit and satisfy the vocal and trending end of the market). The lower number cassettes going straight to build lower end bikes and filtering though as retail spare parts later.

Medium term I can see 9 & 10 speed being squeezed out as being in no man's land between 'leasure' and 'race' (for want of better names).

YMWV