Search found 210 matches

by markfh
13 Dec 2017, 8:57am
Forum: Bikes & Bits – Technical section
Topic: Buying advice hybrid flatbar + carbon + disc
Replies: 35
Views: 3109

Re: Buying advice hybrid flatbar + carbon + disc

Just a few thoughts that you may want to include in your consideration. 1. There are a very wide choice of bikes available and what suits you may be different to what suits a lot of other people. It may take some trial and error to find a bike that suits you and your requirements may change as you g...
by markfh
10 Nov 2017, 9:23am
Forum: Bikes & Bits – Technical section
Topic: Park Tool Chain Whip
Replies: 35
Views: 1995

Re: Park Tool Chain Whip

Whilst respecting Gattonero's opinion I have a Decathlon 'chain whip' as well as a traditional chain whip and it is now my "tool of choice" for removing cassettes as I have found it far easier to keep it in position than a traditional chain whip. I also find it easier to get leverage betwe...
by markfh
4 Nov 2017, 9:43am
Forum: Bikes & Bits – Technical section
Topic: Useless positioning of disc brakes on frames and what to do about it?
Replies: 30
Views: 1542

Re: Useless positioning of disc brakes on frames and what to do about it?

With a bit of googling found that that the Avid parts are referred to as "Avid Cable Boot Kit BB7" Avid part no 11.5311.621.000 and consists of two parts, a larger boot that goes over the end of the brake cable where the outer cable goes into the adjuster on the caliper and a smaller one t...
by markfh
4 Nov 2017, 9:30am
Forum: Bikes & Bits – Technical section
Topic: Useless positioning of disc brakes on frames and what to do about it?
Replies: 30
Views: 1542

Re: Useless positioning of disc brakes on frames and what to do about it?

I believe part of the reason for the move to chainstay mounted rear disc calipers was to allow easier mudguard / rear rack mounting. Avid BB7 disk calipers come with a short "rubber" bellows where the cable emerges from the cable adjuster to help reduce the ingress of water/muck but I do n...
by markfh
4 Nov 2017, 9:22am
Forum: Bikes & Bits – Technical section
Topic: Shifters/Rear Mech Compatibility
Replies: 43
Views: 2088

Re: Shifters/Rear Mech Compatibility

AFAIK Tiagra STI shifters up to and including the Tiagra 4600 had the gear cable coming out of the side of the shifter and used the original cable pull. It was with the introduction of under tape routing with the Tiagra 4700 series that the cable pull was changed/increased.
by markfh
4 Nov 2017, 7:51am
Forum: Bikes & Bits – Technical section
Topic: Shifters/Rear Mech Compatibility
Replies: 43
Views: 2088

Re: Shifters/Rear Mech Compatibility

Although not directly relevant, as MickF is considering using an Ultegra rear mech, the cable pull definitely changed for the Shimano 4700 series 10 speed rear derailleurs and associated shifters. I believe that they also changed the cable pull for the Shimano 4700 double front derailleur and associ...
by markfh
21 Oct 2017, 9:02pm
Forum: Bikes & Bits – Technical section
Topic: Is chain ring on correct way around?
Replies: 26
Views: 1285

Re: Is chain ring on correct way around?

As I see it, unfortunately, the picture you posted is clear and shows the outer chainring behind, not in front of, the spider. If you look at the picture Brucey posted there is only a single (slightly curved) line adjacent to the chain fixing bolts between the fixing bolt and the centre part of the ...
by markfh
21 Oct 2017, 7:59pm
Forum: Bikes & Bits – Technical section
Topic: Is chain ring on correct way around?
Replies: 26
Views: 1285

Re: Is chain ring on correct way around?

Further to my last post I have found a picture of the FC-M430 crankset on a Shimano website ( http://bike.shimano.com/content/sac-bike/en/home/mtb1/drivetrain/crankset/fc-m430-l.html ) This shows both the black and silver versions of the crankset. If you look at the picture of the silver version the...
by markfh
21 Oct 2017, 7:28pm
Forum: Bikes & Bits – Technical section
Topic: Is chain ring on correct way around?
Replies: 26
Views: 1285

Re: Is chain ring on correct way around?

The chainset (also known as a crankset) is the whole assembly including the cranks and chain rings. Normally for Shimnao chainsets there is a sticker on the inside of the crank arm, i.e. the opposite face from that shown in your pictures. From the look of it appears to be a Shimano Alivio FC-M430 bu...
by markfh
16 Oct 2017, 8:11am
Forum: Bikes & Bits – Technical section
Topic: Hub gear conversion ?
Replies: 9
Views: 784

Re: Hub gear conversion ?

I don't know the full range of Shimano Nexus hub gears but for a chain tensioner to be an option the internal brake should NOT be a coaster brake which is a brake that is operated by back pedalling - see Sheldon Brown for more details ( https://www.sheldonbrown.com/coaster-brakes.html ). Another opt...
by markfh
13 Oct 2017, 3:59pm
Forum: Bikes & Bits – Technical section
Topic: Hub gear conversion ?
Replies: 9
Views: 784

Re: Hub gear conversion ?

What sort of brake is with the nexus hub? Provided it isn't a coaster brake a simpler option might be retain the existing (vertical ?) rear drop outs and use a chain tensioner.
by markfh
11 Oct 2017, 12:30pm
Forum: Bikes & Bits – Technical section
Topic: V brake pad holder spare nuts
Replies: 14
Views: 711

Re: V brake pad holder spare nuts

If all you are after is the nuts then there are a lot of far cheaper brake pads available from a variety of sources that come with similar nuts which may provide you with an economic although not ecologically sound solution. :wink:
by markfh
5 Oct 2017, 7:58am
Forum: Bikes & Bits – Technical section
Topic: Gearing : resolving the 17t - 20t sprocket jump
Replies: 29
Views: 1597

Re: Gearing Yes yet again.

A few things you may want to consider:- 1. Modern triple front derailleurs have a shaped inner plate with a lowered portion corresponding to the position of the chain when on the middle ring. This can make them quite sensitive to the difference between the middle and outer rings. Looking at several ...
by markfh
25 Sep 2017, 8:55pm
Forum: Bikes & Bits – Technical section
Topic: gear problems
Replies: 6
Views: 486

Re: gear problems

A rear derailleur mechanism has two functions, one is to move the chain "sideways" across the sprockets of the freewheel/cassette and the second is to maintain the tension in the chain by taking up the "slack" as you move to smaller sprockets at the rear or a smaller chainring at...
by markfh
17 Sep 2017, 3:30pm
Forum: Bikes & Bits – Technical section
Topic: Flat bars to Drops
Replies: 19
Views: 1045

Re: Flat bars to Drops

As I see it for the front derailleur you have a choice of either trying to match the design spacing of the middle and outer chainrings or the getting close to the curvature of the outer chainring. The current crop of 8/9/10 speed (Claris/Sora/Tiagra) Shimano front derailleurs for triples are all des...