Search found 620 matches

by PT1029
14 May 2013, 7:29am
Forum: Does anyone know … ?
Topic: drop bars, wind resistance
Replies: 26
Views: 1269

Re: drop bars, wind resistance

Difference between on the hoods and drops I would say is minmal (my arms just swing down to the drops). Difference between on the hoods and rops and being all tucked in, quite a lot. Sitting bolt up right I find a good way to descend without having to put the brakes on. Aero bars on flat bars. I rem...
by PT1029
10 May 2013, 8:41pm
Forum: Bikes & Bits – Technical section
Topic: Chainring bolts
Replies: 17
Views: 1321

Re: Chainring bolts

I've had similar problems in the past. Some bolts - even when correct for single/double rings - tighten up on them selves just before tightening the ring to the crank. I cured it by taking the female half of the bolt and filing the end down to make it shorter. The amount you need to file usually isn...
by PT1029
10 May 2013, 8:34pm
Forum: Bikes & Bits – Technical section
Topic: Tandem cottered cranks
Replies: 22
Views: 1431

Re: Tandem cottered cranks

I would agree with Brucey, imperial cotter pins have a larger diameter than continental (continental = metric). I had cottered Williams cranks on a tandem ages ago, but not cross over (timing chain on the right side), all i can recall is the rear cotters repatedly got chewed up (even with extreamly ...
by PT1029
29 Apr 2013, 11:45am
Forum: Does anyone know … ?
Topic: Adding bottle cage to forks
Replies: 16
Views: 5668

Re: Adding bottle cage to forks

On a round the world trip many years ago, we visited friends in Pheonix. Contacts led to a frame builder (I think to unsieze a siezed stem - not mine - before the next flight). While at it, he had a pair of bottle bosses brazed each side of the forks. Pheonix to London via NZ/Oz/Asia had a few bicyc...
by PT1029
29 Apr 2013, 11:26am
Forum: Does anyone know … ?
Topic: chain derail
Replies: 13
Views: 1239

Re: chain derail

In a similar vein to Lollycat and ramped chain rings. If you have a modernish chain ring, at some point on the ring you get low/rounded teeth to help the chain er derrail (onto the next ring when changing). On some 9s sytems with worn middle rings, I've known them to derail onto the smallest ring wh...
by PT1029
27 Apr 2013, 6:45pm
Forum: Bikes & Bits – Technical section
Topic: Cracked carbon or just a scratch?
Replies: 9
Views: 1613

Re: Cracked carbon or just a scratch?

Too irregular (=wiggly) to be a scratch. Occures at/near likely blade/internal crown joint. Thus a crack (I have seen other forks cracked here), so bin it, make sure it isn't in a scavengable state when you bin it. If you go for destructive testing, do not breath in carbon fibre debris (think aspest...
by PT1029
13 Apr 2013, 6:08pm
Forum: Bikes & Bits – Technical section
Topic: Bottom Bracket Bother
Replies: 33
Views: 1519

Re: Bottom Bracket Bother

Sorry, don't have SA spacer diameters, but I have used them in the past and they have done the job well. As I recall, the outer diameter is a tad larger than the BB cartridge RH flange (using Power Pro BB's rather than Shimano BB's, but I doubt there is much difference in diameter). A BB lock ring w...
by PT1029
13 Apr 2013, 4:51pm
Forum: Cycle Camping sub-forum
Topic: Multifuel stoves
Replies: 9
Views: 2645

Multifuel stoves

Any offers of advice on what to buy? For years I've used a MSR petrol stove which I rate highly, but its long in the tooth, and she who has been around for less time than the stove really does not like it. Rather than zero pressure flammable liquid, she feels safer carrying highly pressured flammabl...
by PT1029
13 Apr 2013, 12:04pm
Forum: Bikes & Bits – Technical section
Topic: Bottom Bracket Bother
Replies: 33
Views: 1519

Re: Bottom Bracket Bother

Sturmey Archer sprocket spacers would fit (just the right size) behind the RH cup flange.
Any LBS that repairs SA hubs would have one, St John St would also I expect, they seem to do quite a range of SA spares as far as I recall.
HMW 127 is the part number.
by PT1029
11 Apr 2013, 8:05pm
Forum: Does anyone know … ?
Topic: Disc wheels at the front
Replies: 10
Views: 723

Re: Disc wheels at the front

But which way do you get blown? Touring in Iceland made me realise what the weatherman means when he says squals in the weather forecast (think deafening roaring noise in your ears). With rear panniers and low rider front panniers, I had a larger side area low down on the panniers than up top (me), ...
by PT1029
7 Apr 2013, 7:16pm
Forum: Campaigning & Public Policy
Topic: Visiting Recycling sites on a bike
Replies: 35
Views: 4006

Re: Using Veolia household recycling sites on a bike

It seems recycling centres vary! Oxfordshire ones are not viola or whatever its called. They seem to take anything, engine oil, paint, bikes (separate from scrap), chemicals - I had some (I think) sodium chlorate weed killer (about 4 kg I think) in its original labelled container, can spontaniously ...
by PT1029
5 Apr 2013, 8:30pm
Forum: Bikes & Bits – Technical section
Topic: Tiagra 4403 chainrings
Replies: 41
Views: 3220

Re: Tiagra 4403 chainrings

If you are running indexed front gears, then Using the wrong BB axle length (say more than +/-2mm), as well as giving poor chain line can make the front indexing poor or worse. Because the front mech is further in (or out) from where it should be, its on a different part of its swing, so shifts the ...
by PT1029
2 Apr 2013, 8:34pm
Forum: Bikes & Bits – Technical section
Topic: Destructive Cartridge Bottom Bracket Removal
Replies: 12
Views: 1898

Re: Destructive Cartridge Bottom Bracket Removal

If you force things ready hard, you might simply strip the frame's BB threads (have seen it done, and that was turning in the correct direction!). You you go down the hit a bar/spanner with a hammer, don't use a hammer. What works better is hitting with something that have more momentum than a spann...
by PT1029
30 Mar 2013, 3:22pm
Forum: Bikes & Bits – Technical section
Topic: What shed material for security ?
Replies: 17
Views: 1671

Re: What shed material for security ?

Bikes locked to something heavy put in what ever shed you buy. If I remember to lock my bikes, I lock bikes together in the shed. I might get round to using the concrete set in a bucket with a pipe throught it (can put a chunky chain though the concrete to lock things to, my dad made it years ago af...
by PT1029
30 Mar 2013, 3:03pm
Forum: Bikes & Bits – Technical section
Topic: Spokes clicking - concerned about future breakage
Replies: 6
Views: 696

Re: Spokes clicking - concerned about future breakage

Agreed, clicking spokes often due to insuffucient tension. Ditto re gear mech in 1st gear (has the gear/hanger been bent in due to impact?). When I find just 1 loose spoke, its more often that spoke working loose, rather than the rim being bent. Occasionally I have found clicking due to the spoke re...