Search found 760 matches

by amediasatex
22 Feb 2021, 10:34am
Forum: Bikes & Bits – Technical section
Topic: Question for Spa Ti touring owners
Replies: 5
Views: 586

Re: Question for Spa Ti touring owners

Thanks for chiming in Colin, I wasn't worried about using the bridge as a brake fitting as it's sturdy enough, I had a nutted fitting Tektro long drop brake with curved washers in the parts bin so just used that so my friend could do his ride this weekend.

Now he needs to either find a new canti-stud with the correct threading...unless he can find the one he lost 'somewhere' :lol:
by amediasatex
21 Feb 2021, 7:12pm
Forum: Off-road Cycling.
Topic: Gravel Bike
Replies: 75
Views: 7299

Re: Gravel Bike

The discrepancy above is almost certainly due to the limitation being the width in the chainstays rather than radially.

There are a lot of 'gravelly' bikes out there that can fit a 622x40mm but 'only' fit 584x47/48mm because of the width, even though they could fit 584x5+ radially.

As an example I've got one that can fit 622x52/53mm (without guards, 42mm with), but can still only manage to squeeze in 584x54mm width wise, but obviously that then gives some radial clearance for guards.

This seems to be because they're designing for road cranks and the lower Q-factor that comes with them rather than going with clearance for wider tyres but precluding the use for road cranks. This is probably a sensible compromise given the intended use but I share your frustration at manufacturers not actually revealing the useful bits of information like exactly what the clearances are radially, laterally, and at what rim diameter.

I've always thought a simple silhouette diagram of the stay and fork profiles from behind and above with the appropriate measurements would be easy to include on the geometry sheets.
by amediasatex
19 Feb 2021, 4:53pm
Forum: Bikes & Bits – Technical section
Topic: Question for Spa Ti touring owners
Replies: 5
Views: 586

Re: Question for Spa Ti touring owners

velorog wrote:65 mm center to center


Thanks! That’s smaller than I expected but good news as means I can use a spare brake from the parts bin rather than pulling one off one of my bikes
by amediasatex
19 Feb 2021, 4:27pm
Forum: Bikes & Bits – Technical section
Topic: Question for Spa Ti touring owners
Replies: 5
Views: 586

Question for Spa Ti touring owners

Random question I hope someone can help me with to either save the day for a friend OR avoid an un-necessary trip this weekend!

Could any of you lovely people with one of these frames please do me a favour and measure the drop from the hole in the seatstay bridge to the brake track? Basically I need to know what drop brake would be required to fit a SP, DP or CP brake to one of these as a temporary stop-gap...

Thanks in advance!
by amediasatex
26 Jan 2021, 7:14pm
Forum: Does anyone know … ?
Topic: Toe Overlap
Replies: 85
Views: 4426

Re: Toe Overlap

MIB2020 wrote:looking for 50mm ish


That's just too much to try and reclaim IMO.
by amediasatex
26 Jan 2021, 10:54am
Forum: Does anyone know … ?
Topic: Toe Overlap
Replies: 85
Views: 4426

Re: Toe Overlap

Mike Sales wrote:I had a bike with the problem and found that I could live with it too.


I think it not only depends on the rider but also the intended use of the bike whether or not it'll be an issue for you.

I have a couple of bikes with a lot of overlap, it never bothers me on them as they're bikes for riding fast on open roads, you barely ever 'turn' the bars except when you come to a stop and then it's easy to deal with. I've ridden thousands of miles and never had an 'oops' moment.

On the other hand... on my city/errand bike toe overlap annoys the heck out of me, and nearly killed me twice, I spend far more time at slow speed, turning tightly etc. and often with a bit of luggage too, not to mention 'the unexpected' stops induced by cars and meanderthals walking around not looking where they're going.

Likewise I can deal with it when touring, but it's annoying when you end up in a town having to manoeuvre, or crawling up a hill at a fraction of walking pace tacking from side to side to stay upright.

It can also be a big hindrance offroad, if you're type who enjoys dirty shenanigans as part of your exercise routine.


Back to the original question:

- A fork with a bit more offset can cure if you've only got a few mm of overlap, but will change the handling, that might be bad, it might be good, depends on the bike and you preference.

- Shorter cranks can also cure it if it's only a few mm, but will change the fit, that might be bad, it might be good depending on your anatomy and preference.

- Different foot position or shoes could cure it too, but will again change the fit, that might be bad, it might be good depending on your anatomy and preference.

- Wider pedal stance/Q-factor could also get you a few mm clearance, but again, has implications for fit...

All or a combination together could net you ~20-30mm of space, but as above, it's not 'free' space, it comes with consequences which may or may not be tolerable.
by amediasatex
21 Jan 2021, 8:40am
Forum: Bikes & Bits – Technical section
Topic: Shimergo - latest news
Replies: 71
Views: 9309

Re: Shimergo - latest news

De Sisti wrote:
amediasatex wrote:Bikes are just a tool and a form of transport
‘Going cycling’ is a hobby or a sport depending how you do it.

Generally people who do the former have little interest in the workings of the tool, where as those who do the latter *may* also take an interest in the equipment, but plenty (majority?) don’t.

I think you have this the wrong way round.


Really? It’s been my general experience that the vast majority of people who use bikes for transport and simply as a bike aren’t normally that invested in the details of how they work.

Where as those who are into it as a hobby or sport are more likely to be the ones who get into the equipment as well.

Only my experience, others may have different viewpoints of course.
by amediasatex
19 Jan 2021, 8:17am
Forum: Bikes & Bits – Technical section
Topic: Shimergo - latest news
Replies: 71
Views: 9309

Re: Shimergo - latest news

Bikes are just a tool and a form of transport

‘Going cycling’ is a hobby or a sport depending how you do it.

Generally people who do the former have little interest in the workings of the tool, where as those who do the latter *may* also take an interest in the equipment, but plenty (majority?) don’t.

The former greatly outweigh the latter, hence... bike shops.

The latter are geeky and invested in their hobby, hence... forums and tips like these threads.

I’m in the latter group, but most of the people I ride with can’t even tell you how many sprockets are in their cassette let alone the ratios etc. Maybe I’m doing it wrong, maybe they are, but we all have fun.
by amediasatex
15 Jan 2021, 9:31am
Forum: Bikes & Bits – Technical section
Topic: Ergotec Futura seatpost. Missed opportunities.
Replies: 40
Views: 1702

Re: Ergotec Futura seatpost. Missed opportunities.

Valbrona wrote:If from those two things you can't get enough, well then the frame is probably way too small. No?


Not an issue of size but of seat-tube angle.

While it's true that small sizes often have steeper angles it's not universal or causal. Small frames can have slack seat angles just as easily as big ones can have steep angles, it's entirely a matter of design rather than simply size.

I'm cursed with short legs, but a preference/requirement for a lot of setback, couple that with a desire to use traditional leather saddles and you have a recipe for frustration and greatly limited product choices.
by amediasatex
15 Jan 2021, 9:04am
Forum: Bikes & Bits – Technical section
Topic: What would cause an MTB inner tube to keep moving?
Replies: 59
Views: 1504

Re: Challenge Strada Bianca tyres slipping on rim

NickJP wrote:
amediasatex wrote:On a side note, I know tyres pressures are very much a personal thing but I weigh a good 10-15kg more than you and run my 30mm Strada Biancas at 40-45psi, I wonder if your higher pressures are playing a part at all?

I would think that lowering the pressure would make the problem worse - the friction between the tyre bead and rim wall being in some measure proportional to pressure.


I would think so too... but there might be other factors at play if the fit isn't great, for example: If the tyre is a bit baggy on the rim, then at higher pressures it may seat in a slightly different place/way on the rim, it could be the bead is further 'up' the inside of the rim wall for example and thus not making contact at the base of the rim as well as the side.

Challenge tyre beads are a bit different to most clinchers too due to the construction so they don't always seat the same way anyway. The beads are a bit chunkier than normal clinchers so it could be that when used on a narrow rim like the MA2 the beads are taking up more/most of the room in the rim well and the inner tube isn't making much (barely any?) contact with the rim, which could be having an impact on the propensity for the tyre to slip round and drag the tube with it if the tube isn't adding any resistance.

My Challenge tyres have been used on a variety of rims, Mavic Open Pro, Mavic Open Sport, Halo Retro, Kinlin ADHN, H+Son TB14, Pacenti Brevet, and possible some others too. Most of those rims are are a fair bit wider internally than the MA2 and CXP33 although the Open Sport/Pro are similar, but I didn't do many miles with the Strada Biancas on those rims as I felt they were too narrow for the tyre.

There's a quick way to find out if pressure is a factor though ;-)

And to pose the question again, how is the fit of the tyres, are they baggy or were they tight?

Also, and should have asked this earlier, what kind of rim tape are you using? I have seen issues with slipping tyres when using slippery plastic rim tapes, where the tyre has a good purchase on the tape and is actually dragging the rim tape round the rim as the tape is too loose and slippy in the rim. Cured by using a cloth tape or an adhesive-backed tape that cannot slip round the rim.
by amediasatex
15 Jan 2021, 7:47am
Forum: Bikes & Bits – Technical section
Topic: What would cause an MTB inner tube to keep moving?
Replies: 59
Views: 1504

Re: Challenge Strada Bianca tyres slipping on rim

I have had this problem before but not with Challenge tyres.

In all previous cases I’ve had, and ones I’ve seen through the workshop it’s been the case that the tyres were a loose fit in the rim, either baggy tyres or an undersized rim.

Challenge tyres are normally known for being a tight fit, and every pair I have had (a couple of dozen) have certainly been that way. BUT they are a handmade tyre and reports of inconsistency are not unknown so if yours are loose they could be a bad batch? Are yours a particularly loose fit?

On a side note, I know tyres pressures are very much a personal thing but I weigh a good 10-15kg more than you and run my 30mm Strada Biancas at 40-45psi, I wonder if your higher pressures are playing a part at all?
by amediasatex
11 Jan 2021, 11:46am
Forum: Does anyone know … ?
Topic: COVID Lockdown - Guidance versus the Law
Replies: 136
Views: 9359

Re: COVID Lockdown - Guidance versus the Law

Derbyshire Police...


The most telling thing about this latest episode, and the thing that should really make you think is:

The police were already there and waiting.

That pretty much confirms in my mind that their intention from the start was a PR exercise in appearing to be strict. They weren't there primarily to educate and inform the public and reduce instances of accidental transmission.

There were they simply to fine 'someone' for breaking the rules to make an example of for the local (and national) press.

There would be infinitely better ways to deploy police resources to actually educate, inform and police adherence to the guidance and rules, sending multiple officers to the local beauty spot to 'catch' a handful of people out for a walk is not one of them.

Heck, if that particular spot was really an issue for local mixing and transmission (I doubt it) they could even have had a better, more constructive, impact by simply manning the entrance and having a polite chat with anyone who turned up, explaining the guidance and asking people to go home and think about if their actions were appropriate or not. Handing out on the spot fines as a first action for minor (or perhaps not even actual) breaches does nothing but erode respect and trust in the local police.
by amediasatex
5 Jan 2021, 7:58pm
Forum: Does anyone know … ?
Topic: Post-Brexit - buying bike parts abroad . . (incl. Rose/DutchBikeParts)
Replies: 554
Views: 27679

Re: importing bike parts after Brexit

Jdsk wrote:
amediasatex wrote:
andrew_s wrote:It's the Brooks web shop that's based in Italy, and won't send to the UK.
Supplies to regular shops are direct from the factory, and unaffected, so you can still order via St John St, Wiggle, or wherever, and that won't stop.

Presumably the Brooks web shop got merged into the Selle Royal webshop at some stage post takeover, and is now just a skin.

Well yes, I was just pointing out that the product itself is made in the UK, yet can’t be ordered directly from their website if you’re in the UK, due to their EU based distribution setup. It made/makes perfect sense when we were in, and they won’t be the only company that made use of the ease of cross-EU rules, but once administrative barriers get in the way due to leaving things need to be re-evaluated.

As I said I’m sure it’ll all get sorted out but it IS a good example of the issues that will crop up, some expected, some unexpected, that will need sorting out.

As posted in another thread:
"Brooks England distributor reacts to stories claiming saddle sales to the UK have stopped due to Brexit"
https://www.cyclingweekly.com/news/latest-news/brooks-england-distributor-reacts-to-stories-claiming-saddle-sales-to-the-uk-have-stopped-due-to-brexit-487164

Jonathan


Yes... and as stated above you can’t order directly from their webshop, I know you can still order from LBS via their UK distributor but LBS stock of Brooks is patchy at best and special orders have extra delays etc. So many people have been ordering direct from brooks happily for ages.

I’m not Implying it’s a ‘sky is falling’ type problem, but as I pointed out it’s a good example of the kind of administrative hiccups and barriers that will come to light and need sorting.

Barriers that were not there before due to cross-EU integration of rules etc, but barriers that are there now.

Look beyond the Brooks example and it’s affecting other bike (and non-bike) companies too where significant portions of their inventory, or components for their products were easily sourced from the EU, and now are being delayed or have extra hoops to jump through.

It’s not insurmountable and there will be solutions, but right now it’s causing some ripples in supply chains or ability to order from sources that were previously painless.
by amediasatex
5 Jan 2021, 1:49pm
Forum: Bikes & Bits – Technical section
Topic: Adjusting fork rake
Replies: 9
Views: 528

Re: Adjusting fork rake

It’s one of those things that is dependant on the fork itself AND the person doing the bending.
With the right tools, forms and a fair degree of mechanical sympathy/basic engineering it can be done easily.
If you lack the tools, the knowledge, or the skills you can make a right pigs ear of it!

Personally, for a one off job, I’d pay Argos/a frame builder to do it as the time to setup the tooling and make the correct forms for bending the legs in the right place wouldn’t be worth it for me. If I was planning on doing multiple I’d take the time to set up the tooling and do it myself.

So if you’re properly equipped and short of time I’d do it yourself, but if you’re not sure how to setup the equipment to do it then pay someone.
by amediasatex
5 Jan 2021, 1:45pm
Forum: Does anyone know … ?
Topic: Post-Brexit - buying bike parts abroad . . (incl. Rose/DutchBikeParts)
Replies: 554
Views: 27679

Re: importing bike parts after Brexit

andrew_s wrote:
amediasatex wrote:Never mind importing them, right now you can’t even order a Brooks Saddle if you’re in the UK

https://www.brooksengland.com/en_uk/uk-shipping-notice

I’m sure it’ll all be sorted at some point but just goes to show how it’ll take a while to work out the kinks if the new arrangements

It's the Brooks web shop that's based in Italy, and won't send to the UK.
Supplies to regular shops are direct from the factory, and unaffected, so you can still order via St John St, Wiggle, or wherever, and that won't stop.

Presumably the Brooks web shop got merged into the Selle Royal webshop at some stage post takeover, and is now just a skin.


Well yes, I was just pointing out that the product itself is made in the UK, yet can’t be ordered directly from their website if you’re in the UK, due to their EU based distribution setup. It made/makes perfect sense when we were in, and they won’t be the only company that made use of the ease of cross-EU rules, but once administrative barriers get in the way due to leaving things need to be re-evaluated.

As I said I’m sure it’ll all get sorted out but it IS a good example of the issues that will crop up, some expected, some unexpected, that will need sorting out.