Search found 58 matches

by cromo
20 Jan 2016, 11:14pm
Forum: Bikes & Bits – Technical section
Topic: Rim ERD, hub dimension, spoke length confusion
Replies: 26
Views: 2112

Re: Rim ERD, hub dimension, spoke length confusion

I've built wheels using 26" sputnik rims with shimano small flange hubs. I used 262mm for the front and 262 / 260 for the rear, the lengths were fine. Using the DT Swiss spoke calculator or the EDD spoke calculator these lengths would correspond to an ERD of 541mm. An ERD of 537 would have you ...
by cromo
27 Aug 2015, 8:20am
Forum: Bikes & Bits – Technical section
Topic: Front Derailleur on a triple chainset
Replies: 11
Views: 2015

Re: Front Derailleur on a triple chainset

I'm no expert, but is it possible that the bar end shifter is mounted incorrectly so that it is not pulling enough cable? The bar end shifter sits on a square mount and I seem to remember reading somewhere that if it is mounted 90 degrees out, then the cable pull is affected.
by cromo
5 Apr 2015, 11:01pm
Forum: Bikes & Bits – Technical section
Topic: seat post slipping
Replies: 14
Views: 1894

Re: seat post slipping

I had the same problem and found it very annoying! I did not want to use excessive force on the seatpost clamp bolt. So, I purchased a seatpost clamp (30.0 mm) and a seatpost shim (27.2 to 30.0mm) and cut the shim to fit inside the extra seatclamp. This extra clamp was then tightened around my exist...
by cromo
6 Aug 2014, 9:05am
Forum: Bikes & Bits – Technical section
Topic: cone axle
Replies: 1
Views: 554

Re: cone axle

According to shimano techdocs the m770 rear hub uses the axle Y3CZ98010 and the T780 hub also uses the same axle Y3CZ98010. If I was in your position I would buy a T780 rear hub from chain reaction cycles for £31.99 and that would hopefully give you other spares as well, including a freehub.
by cromo
21 Aug 2013, 2:50pm
Forum: Bikes & Bits – Technical section
Topic: Of seat post clamps...
Replies: 2
Views: 997

Re: Of seat post clamps...

I think some seat tubes have a bigger O/D at the top. This is for extra strength and to allow tig welded joints to be made. A 28.6 seat clamp would therefore be too small.
by cromo
13 Jul 2013, 1:10pm
Forum: Does anyone know … ?
Topic: Shimano Alfine 11 oil
Replies: 62
Views: 10893

Re: Shimano Alfine 11 oil

No doubt, someone who knows about lubricants will come along and give their advice but if I was in your situation I would try automatic transmission fluid.
by cromo
28 Jun 2013, 3:00pm
Forum: Bikes & Bits – Technical section
Topic: Do you have a Surly LHT or Avid SD 7's, or both?
Replies: 8
Views: 1131

Re: Do you have a Surly LHT or Avid SD 7's, or both?

Perhaps I need to clarify my post above - I used Tektro RL520 brake levers for V brakes with SD 7's. As was pointed out drop bar brake levers for cantis will not work well at all.
by cromo
28 Jun 2013, 9:28am
Forum: Bikes & Bits – Technical section
Topic: Do you have a Surly LHT or Avid SD 7's, or both?
Replies: 8
Views: 1131

Re: Do you have a Surly LHT or Avid SD 7's, or both?

The Avid SD 7 length of arm from centre of pivot to top of arm, is 107mm. That is the arm that does not have the cable anchor bolt. I have used SD 7's on a LHT with flat bars and with mudguards - no problems, lots of clearance. I have also used SD 7's with Tektro drop levers on a different bike and ...
by cromo
13 Aug 2012, 9:29am
Forum: Does anyone know … ?
Topic: Can't Get my Chainset off!
Replies: 33
Views: 7496

Re: Can't Get my Chainset off!

If you still have not removed the bolt, buy a 9mm Allen key and file it slightly so that it can be bashed into the now enlarged 8mm hexagon "hole". OR if the crank bolt has a plastic dust shield, prize it out, drill a hole or notch in the larger diameter base and use a punch and hammer. Yo...
by cromo
26 Jun 2012, 2:01pm
Forum: Bikes & Bits – Technical section
Topic: Spa XD-2 & Deore LX FD
Replies: 35
Views: 4503

Re: Spa XD-2 & Deore LX FD

It could be that the bottom bracket you are using is giving a chainline that is too small for the LX front derailleur. The LX derailleur probably works best with a chainline of about 50mm. The XD 2 chainset with a 110mm bottom bracket produces a 46 mm or so chainline. You may need a longer bottom br...
by cromo
21 Jun 2012, 7:22pm
Forum: Bikes & Bits – Technical section
Topic: Suntour Power Down tube shifters
Replies: 3
Views: 820

Re: Suntour Power Down tube shifters

You are correct with the ratcheting direction. As for the washers.......?
by cromo
21 Jun 2012, 8:57am
Forum: Bikes & Bits – Technical section
Topic: Replacement wheel cones
Replies: 6
Views: 1494

Re: Replacement wheel cones

Could the problem of not being able to find replacement cones be temporarily solved by fitting balls of a different size? By that I mean rear hubs normally use 1/4" (6.35mm) balls, so could 6.5mm balls (or 6.0mm) be fitted instead? Presumably the balls will then contact with a different (unworn...
by cromo
29 May 2012, 8:27am
Forum: Bikes & Bits – Technical section
Topic: Replacement Pulleys for M739 XT rear?
Replies: 5
Views: 1358

Re: Replacement Pulleys for M739 XT rear?

SJS cycles do Tacx T4000 Sealed Jockey Wheels, the pics shows them with 10 teeth. They are for 7/8 speed and come with various spacers to suit the derailleur they are to used in.
by cromo
30 Apr 2012, 8:55am
Forum: Bikes & Bits – Technical section
Topic: Correct frame size
Replies: 17
Views: 2359

Re: Correct frame size

As mentioned above, actually trying the bike out is the only way to getting correct fit. There are so many factors to consider - frame size (which can be measured in a variety of different ways, standover height, top tube length, how much steerer tube is above the headset so that you can get the cor...
by cromo
22 Apr 2012, 3:25pm
Forum: Bikes & Bits – Technical section
Topic: What's a good quality sealed BB cartridge?
Replies: 174
Views: 12475

Re: What's a good quality sealed BB cartridge?

The answer to all these arguments is staring us in the face - a wooden bottom bracket spindle with wooden cranks, nailed on!
Why not go the whole hog, wooden frame, wooden wheels, wooden tyres, wooden sprockets, wooden chain, wooden work!