Search found 176 matches

by bgnukem
6 Sep 2019, 11:40am
Forum: Bikes & Bits – Technical section
Topic: Loose seatpost - Spa Aubisque frameset
Replies: 67
Views: 3835

Re: Loose seatpost - Spa Aubisque frameset

Cheers. Might end up doing that if the machined seat post slips in the frame!
by bgnukem
6 Sep 2019, 11:27am
Forum: Bikes & Bits – Technical section
Topic: Mavic X138 rim crack
Replies: 51
Views: 3147

Re: Mavic X138 rim crack

Have been riding a rim with similar cracks on my Giant summer bike for the summer. Just marked the ends of the cracks and monitored them for growth. The cracking occurred after I tweaked the wheel and slightly increased the tensions, so obviously some rims are not very tolerant of increased spoke te...
by bgnukem
6 Sep 2019, 11:16am
Forum: Bikes & Bits – Technical section
Topic: 50/34 chainsets and the older rider
Replies: 55
Views: 2277

Re: 50/34 chainsets and the older rider

At 47 I find the compact double gearing too high. Usually I have a top gear of around 100" and aim to use my large chainring for normal riding and the smaller 'rings for the hills. I've resorted to fitting the Spa Cycles triple chainsets to most of my bikes. Only problem is I found they don't r...
by bgnukem
2 Sep 2019, 7:08pm
Forum: Bikes & Bits – Technical section
Topic: Loose seatpost - Spa Aubisque frameset
Replies: 67
Views: 3835

Re: Loose seatpost - Spa Aubisque frameset

Bike isn't built up yet. Had to leave frame/forks in York to get the seatpost machined to fit.

When it's built I'll try both seat posts. However, from past experience it's been an issue for me of seatposts slipping even when they're not as loose as the seatpost Spa sold me.
by bgnukem
29 Aug 2019, 3:57pm
Forum: Bikes & Bits – Technical section
Topic: Loose seatpost - Spa Aubisque frameset
Replies: 67
Views: 3835

Re: Loose seatpost - Spa Aubisque frameset

Result was the seatpost the shop uses was still loose enough to rock in the seat tube, although around 0.1mm larger in diameter than the original 'post I bought to build the bike. So, I left the frame with my mate and supplied two 27.4mm seatposts, which would not fit in the frame, which he had a fr...
by bgnukem
28 Aug 2019, 4:03pm
Forum: Bikes & Bits – Technical section
Topic: Loose seatpost - Spa Aubisque frameset
Replies: 67
Views: 3835

Re: Loose seatpost - Spa Aubisque frameset

Will be collecting the frameset from my friend in Yorkshire this weekend, after he had a friend of his machine down a 27.4mm seatpost to hopefully fit the frame. However, I'd be interested to know if there are any external clamps out there which could be fitted to a 27.2-ish seatpost to stop the sea...
by bgnukem
28 Aug 2019, 3:52pm
Forum: Bikes & Bits – Technical section
Topic: Shimano M324 pedal prob
Replies: 41
Views: 1531

Re: Shimano M324 pedal prob

Another shout for Silkolene Pro RG2. Been using it for years and seems to last well enough in wet conditions. It's formulated for motorcycle bearings, perhaps a bit thicker than ideal for bike bearings (NLGI 2) but it becomes more fluid with use and I put it in my freehub bodies rather than oil. As ...
by bgnukem
21 Aug 2019, 3:09pm
Forum: Bikes & Bits – Technical section
Topic: Frame tubing question
Replies: 9
Views: 598

Re: Frame tubing question

For some reason (which I can't find!) 531 appears to be averse to the higher temperatures generated by TIG welding, but brazing has been used to build 531 frames for generations, However, it seems the tubing is now available to special order only. Reynolds 525 Cr-Mo is the modern equivalent and, giv...
by bgnukem
21 Aug 2019, 12:29pm
Forum: Bikes & Bits – Technical section
Topic: Disc frame touring build..or just go buy a bike?
Replies: 86
Views: 3102

Re: Disc frame touring build..or just go buy a bike?

Agreed, exactly that happened to a friend of mine last week. She hit a shallow kerb stone at small angle and lost control. Bars apparently twisted around and I noticed the hinged bracket on the V-brake arm, into which the noodle fits, was damaged as the noodle had tried to pull through it. Having ha...
by bgnukem
1 Aug 2019, 4:02pm
Forum: Bikes & Bits – Technical section
Topic: Narrow q factor triple chainset with steel rings
Replies: 22
Views: 3387

Re: Narrow q factor triple chainset with steel rings

Just to complicate things, I experienced terrible shifting problems with my front mech (Deore XT M750 - 9 speed) when I replaced the original Deore chainset with one of the Spa Cycles triples a few years ago. It really wouldn't work with the 10-tooth difference between the top and middle 'rings but ...
by bgnukem
19 Jul 2019, 12:33pm
Forum: Bikes & Bits – Technical section
Topic: Should I worry about cracks in rim alongside spoke holes ?
Replies: 18
Views: 1096

Re: Should I worry about cracks in rim alongside spoke holes ?

…. If the cracks were oriented laterally across the width of the rim I'd probably bin it.... why? Wheel rims have nigh-on this exact thing (a radial crack) anyway if they have a pinned joint. If the wheel has a reasonable tension in it there is a compressive force holding the rim together of approx...
by bgnukem
18 Jul 2019, 1:31pm
Forum: Bikes & Bits – Technical section
Topic: Should I worry about cracks in rim alongside spoke holes ?
Replies: 18
Views: 1096

Re: Should I worry about cracks in rim alongside spoke holes ?

Have to admit I've got the same issue with the rear wheel in my summer bike, a Giant Rapid. I marked the ends of the cracks a while ago - there are 4-5 cracked spoke holes - and have been monitoring for growth since. The cracks have grown a bit but as yet there's no sign the spoke eyelets are starti...
by bgnukem
18 Jul 2019, 1:27pm
Forum: Bikes & Bits – Technical section
Topic: New bike - scraping noise from front disc brake
Replies: 20
Views: 752

Re: New bike - scraping noise from front disc brake

Assuming the caliper has only one moving pad, then using the manual adjuster on the static pad, screw it inwards a few turns, then re-set the caliper position as before by pulling the brake on, then releasing and re-tightening the caliper mounting bolts, then back off the adjustable pad a few turns ...
by bgnukem
12 Jul 2019, 12:20pm
Forum: Bikes & Bits – Technical section
Topic: Park Tool CC-2 chain checker and KMC X-9 93 chain. Missing link tool.
Replies: 10
Views: 474

Re: Park Tool CC-2 chain checker and KMC X-9 93 chain. Missing link tool.

Seems odd the original chain has worn so quickly in just 600 miles, but you could always keep it and use it again on the transmission when the chainrings and sprockets are fairly worn, and the chain will run smoothly. I use 3 chains in rotation and replace each after 1000 miles, then go back to the ...
by bgnukem
10 Jul 2019, 2:25pm
Forum: Bikes & Bits – Technical section
Topic: Shimano hydraulic brake bleed funnel sizes
Replies: 8
Views: 373

Re: Shimano hydraulic brake bleed funnel sizes

In a similar vein, I recently bought an eBay bleeding kit to bleed the basic hydraulic front brake on my commuter bike only to find that most of the kit was useless as the syringes and plastic tubes intended to bleed the caliper won't fit as there is no bleed nipple on the caliper. There just seems ...