Search found 156 matches

by jimlews
11 Oct 2019, 6:23pm
Forum: Bikes & Bits – Technical section
Topic: What Not To Make Bike Frames Out Of
Replies: 35
Views: 999

Re: What Not To Make Bike Frames Out Of

Yorkshire pudding.
by jimlews
9 Oct 2019, 6:10pm
Forum: For Sale - bits of bikes, etc.
Topic: Ian Hibell Into Remote Places SOLD
Replies: 3
Views: 283

Re: Ian Hibell Into Remote Places

I would like to buy the book please Steve.
That's if it hasn't already been snapped up.
JL
by jimlews
6 Oct 2019, 10:28pm
Forum: Bikes & Bits – Technical section
Topic: "Gusset" under downtube
Replies: 67
Views: 2018

Re: "Gusset" under downtube

OK, probably time to put this one to bed. Though like all naughty children it is quite likely to want to stay up a lot longer. :mrgreen: Even if you hadn't wanted to cut it off, it was still a good question. I have a Spa tourer frame which I am currently building up. I like the idea of the strength...
by jimlews
6 Oct 2019, 9:59pm
Forum: Bikes & Bits – Technical section
Topic: "Gusset" under downtube
Replies: 67
Views: 2018

Re: "Gusset" under downtube

OK, probably time to put this one to bed. I've just got back from an 'excursion' and happen'd to get talking to a chap who turned out to be a metallurgist/mechanical engineer (not the same thing, apparently).I ran this question past him. The gist was that the frame didn't need a gusset in the first ...
by jimlews
5 Oct 2019, 3:32pm
Forum: Bikes & Bits – Technical section
Topic: "Gusset" under downtube
Replies: 67
Views: 2018

Re: "Gusset" under downtube

Thanks for posting the pics, Brucey. You've saved the blushes of an incompetent photographer. The welding on the BMX frame is BEAUTIFUL. I could sit and admire it all day! That in the second picture is, I think less good. Somewhat uneven. Is it mere coincidence that the crack propagates from where t...
by jimlews
5 Oct 2019, 1:56pm
Forum: Bikes & Bits – Technical section
Topic: "Gusset" under downtube
Replies: 67
Views: 2018

Re: "Gusset" under downtube

A picture would be good. I’ve never seen this before. I note people seem to recognise it, but are you sure it’s not a repair to a front end shunt? From Chris Juden's review of the Spa Tourer: I can’t fault the geometry or tubing choice and was pleased to see a reinforcing plate under the down-tube/...
by jimlews
5 Oct 2019, 12:21pm
Forum: Bikes & Bits – Technical section
Topic: "Gusset" under downtube
Replies: 67
Views: 2018

Re: "Gusset" under downtube

I can't see that it contributes much that is useful on a frame whose purpose is general touring and one that is made from one of Reynolds posher tubesets. Touring bikes have successfully done without such addenda for generations. 1. For generations touring bikes were overwhelmingly lugged, not weld...
by jimlews
5 Oct 2019, 10:44am
Forum: Bikes & Bits – Technical section
Topic: "Gusset" under downtube
Replies: 67
Views: 2018

Re: "Gusset" under downtube

I am thinking that if I remove it carefully, there should be no reduction in the strength of the frame. I understand that 725 steel becomes harder due to the welding process (hopefully, not embrittled), so the aprox 38mm of heat affected area down each side of the downtube should be at least as stro...
by jimlews
5 Oct 2019, 8:52am
Forum: For Sale - bits of bikes, etc.
Topic: Collectable and rare cycling books - More added
Replies: 11
Views: 587

Re: Collectable and rare cycling books - More added

Are you not tackling this from the wrong end?

I'd be selling the BMW to fund the cycling!

Motorbikes - nasty, noisy, smelly things.
by jimlews
4 Oct 2019, 9:18pm
Forum: Bikes & Bits – Technical section
Topic: "Gusset" under downtube
Replies: 67
Views: 2018

"Gusset" under downtube

I recently acquired a frameset from a member of this forum (many thanks, Bill; it's built into a lovely bike). The frame has a reinforcing piece of metal plate (Gusset for want of a better term)under the downtube immediately behind the headtube. It is TIG welded to the headtube at its forward end an...
by jimlews
7 Sep 2019, 10:57pm
Forum: Does anyone know … ?
Topic: Simon Davey frame?
Replies: 12
Views: 873

Re: Simon Davey frame?

"Does (did) the vendor have any info." Not beyond name and that was built for the one previous owner for a tour of Belgium. The condition suggests that that is about all it ever did! You might try to trace that "one previous owner". He/She aught to know who built it. So the pers...
by jimlews
7 Sep 2019, 9:41am
Forum: Does anyone know … ?
Topic: Simon Davey frame?
Replies: 12
Views: 873

Re: Simon Davey frame?

Does (did) the vendor have any info.

My guess is that SD was ex Raleigh/Carlton builder.
by jimlews
2 Sep 2019, 6:35pm
Forum: On the road
Topic: Cycling unbridled
Replies: 13
Views: 1522

Re: Cycling unbridled

Enlightened.
by jimlews
26 Aug 2019, 6:10pm
Forum: Cycle Camping sub-forum
Topic: canvas tents
Replies: 30
Views: 1127

Re: canvas tents

I'm intrigued by VENTILE which is, I think a very close woven cotton material. Developed in WW2 for survival suits for airmen who ditched in the sea. I believe it is available as a tent material and as a (presumably) lighter material for shirts and trousers. Has anyone had any experience of this mat...
by jimlews
25 Aug 2019, 7:44pm
Forum: Does anyone know … ?
Topic: Modern bicycles...
Replies: 35
Views: 1859

Re: Modern bicycles...

plus1 , many other LBS's will agree, a way of manufacturers saving money on machining threading and fitting decent alloy or steel shells in any composite frame. and creating a monstrous wide shell to house outboard brgs which they claim stiffens up the twist on the frame when putting high wattage t...