Search found 35915 matches

by Brucey
17 Nov 2019, 10:38pm
Forum: Bikes & Bits – Technical section
Topic: Feeling a bit cranky today...
Replies: 15
Views: 686

Re: Feeling a bit cranky today...

I've seen quite a few of these cranks come loose and I think there are usually various stages of the failure. When the crank is initially tightened the bolt torque has to a) overcome friction in the splined interface i.e. to allow the joint to settle b) provide a clamping force onto the spindle c) d...
by Brucey
17 Nov 2019, 4:14pm
Forum: Bikes & Bits – Technical section
Topic: Converting Brompton standard 6 speed to twist gear handles
Replies: 6
Views: 286

Re: Converting Brompton standard 6 speed to twist gear handles

if you google 'Sheldon brown IGH crib sheet' you should find it very easily.

cheers
by Brucey
17 Nov 2019, 4:12pm
Forum: Bikes & Bits – Technical section
Topic: Smaller chainset to use with Dura Ace 9speed
Replies: 35
Views: 1000

Re: Smaller chainset to use with Dura Ace 9speed

did you read what I wrote? For the third time I am not suggesting that you buy DA chainrings. BB-7703 is not built like BB-7700 but instead is built more like BB-5500 internally. BB-7703 is not available new, so you use 118mm octalink V1 BB-5500 instead, or BB-7703 secondhand. £50 or less, either wa...
by Brucey
17 Nov 2019, 2:08pm
Forum: Bikes & Bits – Technical section
Topic: Converting Brompton standard 6 speed to twist gear handles
Replies: 6
Views: 286

Re: Converting Brompton standard 6 speed to twist gear handles

there's a 'crib sheet' on Sheldon Brown for IGH cable pulls; you will see that there is some similarity between different 3s shifters but it is not 100% clear that others will work well enough. From what you say you are still waiting for your Brompton, yet you are already planning some radical chang...
by Brucey
17 Nov 2019, 1:52pm
Forum: Bikes & Bits – Technical section
Topic: Would these tyres fit?
Replies: 14
Views: 517

Re: Would these tyres fit?

for riding on the road , not narrow enough, I'd say. Your rims have 584mm bead seat diameter so there are plenty of tyres labelled xx-584 and/or 650B and or 26 x 1-1/2" (NB not 26 x 1.5") which will fit. Schwalbe marathons are pretty good for commuting; I suggest look at those and then fin...
by Brucey
17 Nov 2019, 1:45pm
Forum: Bikes & Bits – Technical section
Topic: Smaller chainset to use with Dura Ace 9speed
Replies: 35
Views: 1000

Re: Smaller chainset to use with Dura Ace 9speed

... Triple Dura Ace chainset will set you back hundreds.you would also have to invest in DA shifters, as triple set up is only viable with a triple left shifter, another couple of hundred.... that is not necessary and not what I was suggesting. What I'm suggesting requires that you carry out a smal...
by Brucey
17 Nov 2019, 1:37pm
Forum: Bikes & Bits – Technical section
Topic: Derailleur Hanger alignment tool ?
Replies: 70
Views: 2472

Re: Derailleur Hanger alignment tool ?

fastpedaller wrote:
Ah..... Is it Owl Pellet welding :lol: :lol:


sorry about that, pretty lame joke really. BTW your hanger appears to be smack bang in the middle of tolerance.

cheers
by Brucey
17 Nov 2019, 12:52am
Forum: Bikes & Bits – Technical section
Topic: Smaller chainset to use with Dura Ace 9speed
Replies: 35
Views: 1000

Re: Smaller chainset to use with Dura Ace 9speed

FWIW FC-7703 triple chainset is built like a double chainset that has been converted to a triple, i.e. the inner ring hangs off the middle ring and the crank only has fittings for 130mm BCD chainrings on it. https://si.shimano.com/pdfs/ev/EV-FC-7703-2064A.pdf The 7703 RH crank appears to differ from...
by Brucey
17 Nov 2019, 12:04am
Forum: Bikes & Bits – Technical section
Topic: Shimano 9 and 10 speed compatability
Replies: 7
Views: 372

Re: Shimano 9 and 10 speed compatability

Polisman wrote:Most 9 speed parts will run with ten, and vice versa, with a little bit of fettling.


cycleruk wrote: 10 speed road RD's will also work ...


Just to be clear, Shimano road 10s rear derailleurs will work in a 9s system except for Tiagra 4700

cheers
by Brucey
16 Nov 2019, 5:12pm
Forum: Bikes & Bits – Technical section
Topic: Derailleur Hanger alignment tool ?
Replies: 70
Views: 2472

Re: Derailleur Hanger alignment tool ?

3mm difference top to bottom is only ~0.3 degrees camber angle. The usual recommendation is that you are allowed 0 to 0.5 degrees negative camber (bottom of RD is further out than the top) and 0 to 0.5 degrees 'toe out' (i.e. the RD can be 'aimed' slightly to the right of the bike, looking forwards)...
by Brucey
16 Nov 2019, 4:56pm
Forum: Bikes & Bits – Technical section
Topic: Shimano 9 and 10 speed compatability
Replies: 7
Views: 372

Re: Shimano 9 and 10 speed compatability

the only 4700 series 10s derailleur that might be backwards compatible to 9s is the front derailleur meant for triple chainsets. Everything else is different. Which bits do you need to change? Would you want to have different gear ratios? -if so there are plenty of other choices that might allow you...
by Brucey
16 Nov 2019, 2:30pm
Forum: Does anyone know … ?
Topic: Vintage Bicycle Advertisements; good, bad. ugly...
Replies: 550
Views: 17431

Re: Vintage Bicycle Advertisements; good, bad. ugly...

from about 1920; lots of superfluous tubes in the handlebars, frame and fork shows signs of the 'more is more' culture, but when it comes to useful stuff such as chainguards, luggage carriers or more than one brake..... naah, you don't need any of that.... :roll: Seems to have been going for the 'lo...
by Brucey
16 Nov 2019, 2:27pm
Forum: Does anyone know … ?
Topic: Vintage Bicycle Advertisements; good, bad. ugly...
Replies: 550
Views: 17431

Re: Vintage Bicycle Advertisements; good, bad. ugly...

Other Hercules ads from the 1930s featured steady middle-class types. The more basic model Hercules 'H' model was being pitched at the kind of young man who chatted up shop girls, wearing flannels that are mysteriously unmarked by the astonishingly tight-looking chainguardless chain. https://i.pinim...
by Brucey
16 Nov 2019, 1:57pm
Forum: Bikes & Bits – Technical section
Topic: LIdl lamps in dynamo form (either lidl or branded something else)?
Replies: 6
Views: 351

Re: LIdl lamps in dynamo form (either lidl or branded something else)?

I've used the cheap Union 4265 light too; it is very good value for money and I'd only criticise it for 1) having screws in the back that go rusty very quickly 2) having a slightly ugly shaped housing (but maybe others think differently) 3) having a slightly uneven beam spread (*) 4) 'only' being 35...
by Brucey
16 Nov 2019, 12:53pm
Forum: Bikes & Bits – Technical section
Topic: Wanted - Recommendations for a new 8 speed rear derailleur
Replies: 11
Views: 407

Re: Wanted - Recommendations for a new 8 speed rear derailleur

it'd never occurred to me that those features might be useful for something. Mind you they might just help rainwater into the bushings instead.

cheers