Search found 1938 matches

by breakwellmz
3 Aug 2017, 9:34am
Forum: Bikes & Bits – Technical section
Topic: A calculation i could do with help with.
Replies: 33
Views: 1627

Re: A calculation i could do with help with.

Cheers. "it is unlikely (but still possible) that two frames are bad; how the wheel sits between the seat stays is often a good guide. However if there is any doubt, and you don't have an unequivocal means of measuring the wheel dish, try reversing the wheel in the frame." Done that. I als...
by breakwellmz
3 Aug 2017, 7:58am
Forum: Bikes & Bits – Technical section
Topic: A calculation i could do with help with.
Replies: 33
Views: 1627

Re: A calculation i could do with help with.

A DISHING TOOL!!! :roll: It sits the same way in both frames i`ve dropped it into.I just find it strange that what appears to be an unadulterated new wheel that looks right at the hub end can be so wrong at the rim end. Whats the minimum gap i can have between the(14t)top sprocket(without chain)and ...
by breakwellmz
2 Aug 2017, 1:28pm
Forum: Bikes & Bits – Technical section
Topic: A calculation i could do with help with.
Replies: 33
Views: 1627

Re: A calculation i could do with help with.

Axle nuts now sorted thanks. I`ve dropped this wheel into a couple of frames now to find the rim is HUGELY offset to the left.The rim is hard up against the frame on one side with an 18mm + gap on the other! This is a NOS 126mm OLN hub wheel remember. There is an 8mm gap between sprocket and frame s...
by breakwellmz
1 Aug 2017, 8:30am
Forum: Bikes & Bits – Technical section
Topic: Drops to straight bar conversion handling.
Replies: 32
Views: 1216

Re: Drops to straight bar conversion handling.

Bicycle steering has an element of self-centering, tyre drag is the force that centers the steering, acting through the "lever" of steering trail.....thats the distance the front tyre contact patch is behind where a line drawn through the headset intersects the road https://en.wikipedia.o...
by breakwellmz
28 Jul 2017, 10:53am
Forum: Bikes & Bits – Technical section
Topic: A calculation i could do with help with.
Replies: 33
Views: 1627

Re: A calculation i could do with help with.

Thanks for that chaps.

It bloody well is M10,5x26tpi!
Normal is direct with an indirect lower range if that makes sense.
by breakwellmz
28 Jul 2017, 9:47am
Forum: Bikes & Bits – Technical section
Topic: A calculation i could do with help with.
Replies: 33
Views: 1627

Re: A calculation i could do with help with.

I was using the term anneal in the generic, to soften , sense. I see; it does of course have a specific meaning in relation to heat treatment of steels. NA, am I right in thinking this is for an old Sachs 2s hub? If so, might I make a suggestion...? You could dismantle a current base model shimano ...
by breakwellmz
19 Jul 2017, 10:13pm
Forum: Bikes & Bits – Technical section
Topic: A calculation i could do with help with.
Replies: 33
Views: 1627

Re: A calculation i could do with help with.

No, dummy. (in the photo)
The proper one has a much larger dia, about 80mm.
by breakwellmz
19 Jul 2017, 8:52pm
Forum: Bikes & Bits – Technical section
Topic: A calculation i could do with help with.
Replies: 33
Views: 1627

Re: A calculation i could do with help with.

That`s easy for you to say! :wink: I ground out the largest sprocket so it clears the cassette back flange allowing it move about 3mm inboard, the rest of the sprockets still bares up against that flange. With a dummy spacer and fully assembled it all sits as it should and i can see on what pitch th...
by breakwellmz
19 Jul 2017, 8:33pm
Forum: Bikes & Bits – Technical section
Topic: Noisy Sturmey Archer 3sp
Replies: 122
Views: 6005

Re: Noisy Sturmey Archer 3sp

Five miles of varied terrain and speeds. The grease started coming on on the LH side but not much, but then again I only did five miles. I'll try for a longer ride on Friday - busy tomorrow. Although I'd cleaned everything, the rear brakes still squeaked, so I'll have to remove the blocks and give ...
by breakwellmz
19 Jul 2017, 1:19pm
Forum: Bikes & Bits – Technical section
Topic: Noisy Sturmey Archer 3sp
Replies: 122
Views: 6005

Re: Noisy Sturmey Archer 3sp

Rather than mixing your own how about using gearbox grease for use in vintage motorcycles?
BTW, Sturmey A used to supply gearboxes to motorcycle manufacturers many years ago.
by breakwellmz
18 Jul 2017, 9:35pm
Forum: Bikes & Bits – Technical section
Topic: A calculation i could do with help with.
Replies: 33
Views: 1627

Re: A calculation i could do with help with.

Yes, it`s this one- https://forum.cyclinguk.org/viewtopic.php?f=5&t=112653&hilit=sachs+orbit Having taken a file to one of the sprocket tabs, they are not as hard as expected compared to others i have tried filing. I`ve looked at other (Shimano and Suntour) sprockets and none of them are use...
by breakwellmz
18 Jul 2017, 5:44pm
Forum: Bikes & Bits – Technical section
Topic: A calculation i could do with help with.
Replies: 33
Views: 1627

Re: A calculation i could do with help with.

Brucey- Can`t quite picture your suggestion i`m afraid and had imagined if i were to use any bolts they would be positioned as per Buks illustration-most amount of material/away from core for less torque seen. 6 x M3 looks good (I have some!)and the socket head depth is less that 3mm. I see making t...
by breakwellmz
18 Jul 2017, 1:28pm
Forum: Bikes & Bits – Technical section
Topic: A calculation i could do with help with.
Replies: 33
Views: 1627

Re: A calculation i could do with help with.

Thanks for making the effort chaps, more information- 1 This is all being done with hand tools at home, not a pillar drill let alone a welder.(In fact i`m using a brace and hole saw to cut out the core of the spacer/plate) 2 The Artu bits look useful.I`m sure the sprockets are case-hardened, i could...
by breakwellmz
17 Jul 2017, 9:55pm
Forum: Bikes & Bits – Technical section
Topic: A calculation i could do with help with.
Replies: 33
Views: 1627

Re: A calculation i could do with help with.

It`s a practical and academic excise to be honest. I remember the manufactures of Loctite 638 claiming it had replaced the welding of car starter rings onto their flywheels, something that has obviously stuck! It also relates specifically to the attachment of the largest (28t) cassette sprocket (no ...