Author Topic: Older/Lightweight Cycles site!  (Read 1839 times)

guest18

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Re: Older/Lightweight Cycles site!
« Reply #15 on: April 23, 2012, 06:37:24 AM »
not as long as you take it to bits and clean it thoroughly first, otherwise best to stick to semi-synthetic Andy ;)

Presta for a road bike, but schraeder for a tourer, *much* easier to find a pump in a nearby garage...
(also presta are a fiddly pita!)

guest7

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Re: Older/Lightweight Cycles site!
« Reply #16 on: April 23, 2012, 10:49:54 AM »
I don't want to scare you all, but I've just had my Ross Recumbent frame repaired. Looking at making a seat frame, handlebar stem and bottom bracket tube and then it's just a matter of bolting on standard cycle stuff.

I had the frame replaced under warranty in 1995 and they didn't want the old one back. I damaged the front forks a little later and replaced that too so I've had a frame and forks hanging up in the garage ever since. I took the frame down to my engineer the other day and he said "no problem at all". £8 later it was done. I took the fork next and he said it will be done this week.

I've got my cycle trade mates looking out for a damaged alloy frame to liberate a bottom bracket shell from to weld to the slider tube that fits into the 'bent frame (see picture of similar bike below).

I'm just wondering how to make the seat mesh. The original had tensioning laces in the rear (yes, just like a corset  ;))
Any ideas?


002

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Re: Older/Lightweight Cycles site!
« Reply #17 on: April 23, 2012, 11:04:20 AM »

I'm just wondering how to make the seat mesh. The original had tensioning laces in the rear (yes, just like a corset  ;))
Any ideas?


Adjustable Straps !? Similar to the Triumph ones as used in crates.

Just an idea !

Jethro
Cooey
Martini-Greener GP
Lee Enfield
ELG

guest18

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Re: Older/Lightweight Cycles site!
« Reply #18 on: April 23, 2012, 03:21:52 PM »
What Jethro said, or if you have a frame, why not canvas (or more breathable material) eyeleted and laced at the back as before?
Pretty cool though  8)

Have you seen the "Atomic Zombie" homebrew stuff? I got the book of plans and the lowracer keeps on attracting my eye... not that I have the time to make one, or the space...  :(this one; http://www.bicycles.net.au/forums/viewtopic.php?f=11&t=15213 )

guest7

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Re: Older/Lightweight Cycles site!
« Reply #19 on: April 23, 2012, 04:17:11 PM »
Cool!


guest18

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Re: Older/Lightweight Cycles site!
« Reply #20 on: April 23, 2012, 09:32:31 PM »
"cool"
lol, isn't it! The plans in the book are for the hardtail version, apparently you'd need some 3/32" thick 1 1/2" dia square (or round) tubing and from scrap frames; two head tubes, a bottom bracket, chainstays cut from a 26" frame and two pairs of forks (one for a 20" wheel, one for a 26").  A lot cheaper than anything you could get over the counter!!

Don't know if the rear suspension would be an advantage or just more weight to drag, either way, looks like it should be a flying machine on the flat or downhill  ;D

Maybe once I retire from part time work... :-\

SRXweb

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Re: Older/Lightweight Cycles site!
« Reply #21 on: April 24, 2012, 06:53:57 PM »
Go here http://www.krencker.com/ and click "Gallerie"


guest7

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Re: Older/Lightweight Cycles site!
« Reply #22 on: April 24, 2012, 07:31:11 PM »
Go here http://www.krencker.com/ and click "Gallerie"

Bloody hell! that's a great bike eh?

Thanks for posting the link.

As for the mesh material for my 'bent seat... trampoline mesh! Bloody ideal stuff and there should be loads of dead trampolines around to scrounge bits off.

My forks are back, straightened, strengthened and all for only £8. So far so cheap  ;)

GC

Steve Lake

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Re: Older/Lightweight Cycles site!
« Reply #23 on: April 24, 2012, 09:59:19 PM »
On resurrecting my Mike Burrows time trial bike at the beginning of the year i was disappointed to note that the 'tubs' were flat....this after 'only' 15 years at the back of the garage... they did however manage to hold pressure for a day or so when inflated.

so... where to find new tubs... bugger!... no-one seems to make them, finally found a dutch company flogging tubs at between £50 and and telephone numbers!... and as for the 24" tub on the front (good old Mike, put a 24" front sprint on to get the low profile he was after).... £100+ for that one!

so, I had to pull out my old holdworth 'training' iron, buy some relatively cheap HP rims and tyres, bolt on some tri bars i had loafing about, just to compete in the clubs new years day 10.... history (and the club records) will show i did a measly 29.12 ... hardly worth the effort... to think... when i packed up the Time Trial scene 15 years ago i was putting in long 21's.... ho hum.... i hate growing old!

guest7

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Re: Older/Lightweight Cycles site!
« Reply #24 on: April 25, 2012, 07:54:17 AM »
I remember once passing a bloke a bloke on a 'low-pro' time trial bike. He was contorted over the very low bars and sweating like a good 'un. I was riding the recumbent and passed him, chatting, one-handed and relaxed. That told me everything I needed to know about the aerodynamic advantage of a recumbent.

What wheels do TT bikes use these days then?

GC