Search found 32 matches

by BarryS
4 Jun 2020, 4:23pm
Forum: Bikes & Bits – Technical section
Topic: shimano freehub internals
Replies: 16
Views: 688

Re: shimano freehub internals

Think I am going to try this adjustment process.
Any tips on getting the dust shield out first without mangling it?
by BarryS
14 Jan 2019, 11:04am
Forum: Bikes & Bits – Technical section
Topic: Tubeless tribulations
Replies: 51
Views: 3044

Re: Tubeless woes

one approach that has helped me with the original problem
I try to only fit tubeless tyres in the garage when I have patience to spare. First fit the tyre with a tube on the intended wheel, make sure it 'pops' properly onto the rim bed. over inflate and leave for few days, some tyres are initially almost impossibe to lift over the rim are now a bit easier, so the bead has stretched a touch.
Delate fully, and this is important I find, the tyre must stay up on the rim bed. If it drops into the well, add another layer of tape, repeat if necessary.
Take out the tube and fit valve with no core and inflate (track pump sometimes or a blast from compressor)...etc.

If it still won't inflate, I put the tube back in and pop the tyre again. Deflate and now ONLY push one bead down and lift only that side over the rim to retrieve the tube. Now try to inflate tubeless, and the air pressure only needs to move 'half' a tyre. I generally paint a bit a sealant on this bead first too, and it's worked in all but one stubborn case.

Bit of faff, and I don't think it practical on the road. I have not yet had non sealing puncture but if I did and my tyre unseated, I couldn't be sure a normal pump/CO2 would definitely pop it back, so always carry tube. I could repeat all of the above, but in practice would just leave the tube in until later. Not happened in three years but that's the plan
by BarryS
17 Nov 2017, 5:16pm
Forum: Health and fitness
Topic: Pressure sore?
Replies: 9
Views: 870

Re: Pressure sore?

Anecdotes shared on a forum do not equal diagnosis.
On the advice of my local pharmacist, if the problem is persistent see the doc ( I went with just the same today)
by BarryS
17 Oct 2017, 9:19am
Forum: Bikes & Bits – Technical section
Topic: Campag rear derailleur 'leverage'
Replies: 2
Views: 310

Re: Campag rear derailleur 'leverage'

OK thanks, new cables it is then
by BarryS
16 Oct 2017, 2:38pm
Forum: Bikes & Bits – Technical section
Topic: Dynamo wiring under stainless steel mudguard - what glue?
Replies: 22
Views: 1531

Re: Dynamo wiring under stainless steel mudguard - what glue?

I did this job with clear silicone bathroom sealant on my GB mudguards, lasted well so far and wire can't rattle in the channel either.
by BarryS
16 Oct 2017, 2:15pm
Forum: Bikes & Bits – Technical section
Topic: Campag rear derailleur 'leverage'
Replies: 2
Views: 310

Campag rear derailleur 'leverage'

Does anyone know if Campag changed the leverage of the rear derailleur from 10 speed to 11Speed mechanisms - by this I mean the distance moved by the mech. for a given cable pull. I have tried to mix 11 speed ergos/11 speed cassette/10 Speed mech. and it works OK, it shifts fine but rattles in some ratios. Is this combo never meant to work or do I have some other issue to find, sticky cable etc.?
Barry
by BarryS
20 Apr 2015, 3:02pm
Forum: Bikes & Bits – Technical section
Topic: 11 speed cassette
Replies: 3
Views: 851

Re: 11 speed cassette

thanks for the info
by BarryS
20 Apr 2015, 2:09pm
Forum: Bikes & Bits – Technical section
Topic: 11 speed cassette
Replies: 3
Views: 851

11 speed cassette

Does anyone know (or could measure for me ) the cog spacing on a Shimano 11 speed cassette?

Thanks
by BarryS
15 Oct 2014, 12:51pm
Forum: Bikes & Bits – Technical section
Topic: Shimano STI cable pull - 11 speed
Replies: 15
Views: 1797

Re: Shimano STI cable pull - 11 speed

I think 11 speed STI shifter/11 speed road der with 10 speed cassette is a good combo to try.

Investigating 11 speed STI shifter/10 speed road der with 10 speed cassette, this is even more useful because that's what I have ( except the shifter).

Why do I care (except just interested in mixed system 9/10/11 shi and campag as there several setups only possible this way, and quite a lot works that shouldnt)?
I am considering trying Shimano R685 ( which gives hydraulic brakes and mech shifting ) but only in 11 speed. hence planning questions because you can't get them yet.
by BarryS
14 Oct 2014, 10:24am
Forum: Bikes & Bits – Technical section
Topic: Shimano STI cable pull - 11 speed
Replies: 15
Views: 1797

Re: Shimano STI cable pull - 11 speed

Thanks all, what I have learned so far.

1. Shimano and Campag 11 speed cassettes have the same pitch, 3.85mm.
2. Shimano 11 speed cassette is wider than shimano 10 speed cassette (not quite sure how much, but enough that 11 can't replace 10).
3. Campag 11 cassette will replace shimano 10 but would require new freehub. and this wont work for the wheels I'm thinking of ( but is actually a good option where applicable, thanks MickF).
4. Shimano 11 speed road STi& 11 speed road der moves 3.85mm per click (shimano 10 speed cassette pitch is 3.95mm, so the total error is less than 1mm across the whole cassette, so this is probably good enought to try out).
5. Shimano 11 speed road STi and 10 speed road der. moves ???mm per click. This is the one I am most interested in, hence the questions of how much cable this shifter pulls.

Any more info gratefully received.
by BarryS
13 Oct 2014, 3:37pm
Forum: Bikes & Bits – Technical section
Topic: Shimano STI cable pull - 11 speed
Replies: 15
Views: 1797

Re: Shimano STI cable pull - 11 speed

No I'm not saying that, I am not sure of my facts on this yet (hence question to the group).
I haven't bought or measured 11 speed STIs or cassette yet - trying to work out if I could use them first.

My cassette sizing comment is based on Shimano stating you can't put 11speed cassette on older hubs (10 or other) BUT you can put 10 speed cassette on newer 11 speed hubs with the addition of a spacer. So my inference from this is that the 11 speed cassette is wider, anyone got one to measure?
by BarryS
13 Oct 2014, 2:37pm
Forum: Bikes & Bits – Technical section
Topic: Shimano STI cable pull - 11 speed
Replies: 15
Views: 1797

Re: Shimano STI cable pull - 11 speed

But an 11 speed cassette is wider so doesnt fit on a 10 speed hub
by BarryS
13 Oct 2014, 1:30pm
Forum: Bikes & Bits – Technical section
Topic: Shimano STI cable pull - 11 speed
Replies: 15
Views: 1797

Shimano STI cable pull - 11 speed

Does anyone know ( or can measure) the cable pull for the rear Shimano 11 speed road STI (RH) shifter?
I am considering trying to use this with a 10 speed rear wheel - if I can work out what der/cogs might work.
Only because I have lots of wheels that I can't readily adapt to 11 speed cassettes, but I would be quite happy to loose one click if I can get the shift pitch correct.
by BarryS
6 Apr 2014, 12:05pm
Forum: Bikes & Bits – Technical section
Topic: Which multi-gear hub is easiest to maintain on the road?
Replies: 49
Views: 6427

Re: Which multi-gear hub is easiest to maintain on the road?

The only problem I can think of is that wheel changes are a bit more faff, as the der. is floating once the bolt is out, only attached by the cable. So it's a two stage process because of the bolt. But on the other hand a bolt on hub is always slower anyway ( but secure) and this is no worse than that.

PM if you can't source the parts, I think I still have them somewhere.