Search found 23 matches

by destry
22 Nov 2013, 12:06pm
Forum: Bikes & Bits – Technical section
Topic: ACI spokes - DB or plain gauge?
Replies: 3
Views: 733

Re: ACI spokes - DB or plain gauge?

Just as I thought - and many thanks for these replies. I also rang Wheelsmith, who have been building with ACI spokes for 35 years, and they were in no doubt that the butting is visible and can easily be felt with the fingers -- and of course, measured at 1.7 mm... On the strength of this barrage of...
by destry
22 Nov 2013, 10:19am
Forum: Bikes & Bits – Technical section
Topic: ACI spokes - DB or plain gauge?
Replies: 3
Views: 733

ACI spokes - DB or plain gauge?

This seems a slightly absurd query to me, but here goes! I just bought 100 double butted (2.0/1.7/2.0) ACI spokes from ParkersInternational on a certain auction site. When they turned up, there was no discernable butting. I put a set of calipers on them and they are around 1.96 mm right down the len...
by destry
11 Sep 2012, 4:43pm
Forum: Bikes & Bits – Technical section
Topic: Wheel truing - How much wobble is acceptable?
Replies: 11
Views: 2606

Re: Wheel truing - How much wobble is acceptable?

I would pluck the spokes in the vicinity of the wobble and see if one is looser than the others (bearing in mind that drive-side spokes will all be tighter than non-drive side). If there's a plunk in amongst the plinks, then it's an easy fix for the price of a spoke key. I agree with others that on ...
by destry
11 Sep 2012, 4:24pm
Forum: Bikes & Bits – Technical section
Topic: Biopace
Replies: 41
Views: 2563

Re: Biopace

Shimano put a vast amount of research effort into Biopace, and I can't see any reason why they would jigger with the data just to produce a ring that most people think works counter-intuitively. The concept failed first because it didn't work for super-fit, high-cadence pro cyclists -- and of course...
by destry
2 Sep 2012, 5:01pm
Forum: Bikes & Bits – Technical section
Topic: Shimmy -- caused by play in hub?
Replies: 35
Views: 2206

Re: Shimmy -- caused by play in hub?

Thanks for all your thoughts. It looks to me like I am lucky to have cycled for so long before experiencing a shimmy! I'm treating it as a rite of passage. Interesting thoughts about frame design, though the bike you describe is going to have very long top and down tubes, hence less stiff (all else ...
by destry
1 Sep 2012, 6:42pm
Forum: Bikes & Bits – Technical section
Topic: Shimmy -- caused by play in hub?
Replies: 35
Views: 2206

Re: Shimmy -- caused by play in hub?

I have fixed the hub.,. But the shimmy only happened once, on quite a rough bit of road. so if it doesn't happen again, that might not mean anything... Of course, what I really wnat is to feel that I can reasonably blame the wheel (easy to fix) rather than the frame (impossible to fix). I'm never go...
by destry
1 Sep 2012, 5:55pm
Forum: Bikes & Bits – Technical section
Topic: Shimmy -- caused by play in hub?
Replies: 35
Views: 2206

Shimmy -- caused by play in hub?

Does anyone know whether the dreaded shimmy -- that is, when a bike goes into a sort of controlled wobble at high speed -- can be caused by having too much play in the rear hub? It happened to me for the first time a week ago, on a frame I've ridden for several years without incident. Bike was unloa...
by destry
12 Aug 2012, 12:56am
Forum: Bikes & Bits – Technical section
Topic: Tubular tyre glueing - advice wanted
Replies: 7
Views: 1345

Re: Tubular tyre glueing - advice wanted

Thanks, guys -- what I really need to know is how a tub feels when properly glued on. Maybe I was expecting a tougher bond than is normally needed...

Keep 'em coming!
by destry
11 Aug 2012, 2:44pm
Forum: Bikes & Bits – Technical section
Topic: Tubular tyre glueing - advice wanted
Replies: 7
Views: 1345

Tubular tyre glueing - advice wanted

I'm glueing on a pair of tubs for the first time and not happy with the results... Advice needed!. Rims are vintage fiamme, tyres are Vittoria Seta Cronometro which are basically NOS but have been mounted before, cement is Vittoria Mastik 1. Here's what I did with the rear wheel: - Thoroughly cleane...
by destry
14 Jun 2012, 1:37pm
Forum: Does anyone know … ?
Topic: Are many Brooks saddles stolen in the London area?
Replies: 50
Views: 7356

Re: Are many Brooks saddles stolen in the London area?

Pitlock make a lockable skewer set which includes a seatpost bolt. Not cheap, but very high quality and you can buy replacement parts. CycleSurgery sell them. I can never understand why people carry great loops of cable around to lock their wheels when it's so easy to replace quick releases with the...
by destry
23 Jan 2012, 12:35am
Forum: Bikes & Bits – Technical section
Topic: Suntour Cyclone Mark I spring
Replies: 9
Views: 942

Re: Suntour Cyclone Mark I spring

Well, I fixed it - for now, anyway! Pretty much every tip given here was useful -- especially the one about removing the boss to make it easier to get the top part of the spring in the best notch, so thanks for that, Chris. I didn't have to unbolt the shaft and I didn't get a whack on the thumb, eit...
by destry
18 Jan 2012, 1:08am
Forum: Bikes & Bits – Technical section
Topic: Suntour Cyclone Mark I spring
Replies: 9
Views: 942

Re: Suntour Cyclone Mark I spring

Many thanks to all for this fount of expertise. I'm going to have a go at a repair over the weekend. On Sunday evening, when several bits of bent spring have embedded themselves in my thumbnails, I will probably message you, Chris, with an offer for your old Cyclone!

Cheers,

Giles
by destry
17 Jan 2012, 1:45pm
Forum: Bikes & Bits – Technical section
Topic: road/offroad compromise tyre
Replies: 14
Views: 3459

Re: road/offroad compromise tyre

There are plenty of tyres that will handle tarmac and light off-road when it's dry. The problem is rain. My view is that absolutely anything is better than riding knobbly tyres on wet tarmac. So for this kind of ride, I use fat Marathons, which work well on road and off road when it's dry. When it g...
by destry
17 Jan 2012, 12:06am
Forum: Bikes & Bits – Technical section
Topic: Suntour Cyclone Mark I spring
Replies: 9
Views: 942

Re: Suntour Cyclone Mark I spring

Thanks, Brucey, and yes, I see what you mean -- there are several notches that could be used to take the 'bent bit' at the other end. I'd always assumed the 'wrong' ones were there simply to cause grief among amateur bike mechanics. If it doesn't work the first time, I can always look in Yellow Page...
by destry
16 Jan 2012, 2:47pm
Forum: Bikes & Bits – Technical section
Topic: Suntour Cyclone Mark I spring
Replies: 9
Views: 942

Suntour Cyclone Mark I spring

I snapped the little projection off the lower end of the spring of my Cyclone Mark I rear derailleur. Does anyone have one?

I salvaged the spring off a VXGT, but it doesn't fit. Would hate to say goodbye to the Cyclone, so here's hoping...