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 Post subject: Re:
PostPosted: Sun Aug 18, 2019 4:32 pm 
Classified Mod
Classified Mod

Joined: Wed Dec 30, 2009 8:34 pm
Posts: 14267
Location: Fife in Scotland
old_coyote_pedaller wrote:
I read an article in a climbing/mountaineering magazine I use to get many years ago about Goretex and how breathable it is.
In ideal conditions, i.e. not in normal use the way everybody actually uses Goretex jackets, it is perfectly breathable but ideal conditions almost means laboratory conditions. Goretex needs vapour pressure to push out the moisture as vapour molecules which are small enough to pass through the pores in the Goretex membrane. To maintain this vapour pressure it has to be warm enough inside jacket so that it does not condense into water which cannot pass through the pores as the water molecules are too big. This is also how Goretex stops rain getting in.

Jackets need to be almost sealed to create the warm atmosphere which will maintain this vapour pressure. If, as we all do, wear a jacket with zip down a bit or sleeve cuffs open because we are too warm, or hem of jacket is open which most are normally, we allow the interior of jacket to cool down so there is no vapour pressure. Damp/wet patches then occur.
If there then is a layer of actual moisture on inside of jacket it cannot pass through and the water vapour cannot either.
That is also why jackets have to be cleaned and occasionally re-proofed so that rain balls up and runs off the outer fabric, if it gets wet the vapour cannot pass through it after passing through the pores in Goretex. Probably the inner fabric also needs to be clean and proofed as well for same reasons.

Some of the above may be me misremembering but it is essentially why most folk moan about their "waterproof" :roll: jackets.


Wise words from the auld fella :wink:


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PostPosted: Mon Aug 19, 2019 12:36 pm 
Retro Guru

Joined: Wed Aug 18, 2010 9:58 pm
Posts: 978
Location: Highlands, Scotland
If you want breathable, a thick hairy wool jumper with natural wool does the job.
I often use this in the StrathPuffer and carry a Pertex top for when it actually rains (as opposed to Scotch mist and light drizzle)


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 Post subject: Re:
PostPosted: Mon Aug 19, 2019 2:59 pm 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider

Joined: Thu May 06, 2010 10:05 pm
Posts: 8969
Location: Scotland
Ah Brian! There you are! I've been meaning to ask you what you use to make compressionless / linear brake lines for your bikes? And where to get it from?
I'll be setting some TRP Spyes up soon and want to get the best out of them (the last cable disc brakes I tried were BB5 copies and used regular brake cable, suffice it to say they slowed you rather than stopping you...


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PostPosted: Mon Aug 19, 2019 10:25 pm 
Retro Guru

Joined: Wed Aug 18, 2010 9:58 pm
Posts: 978
Location: Highlands, Scotland
Alloy tubing from B&Q for the outer. Use it for the places where the outer does not have to flex.
You can carefully bend the tubing into shape with just your thumbs, but get it right because it doesn't like being bent back if you over do it (nothing bad happens, it just doesn't look 'right')
Can't remember the size but also get the next size up because you can cut short bits of that to superglue on to the ends to make a home for the flexible bits of outer you'll need.
You'll also need a liner. I use a suitable diameter of teflon air hose. (I think the company I get it from is called Airlines)
Also useful is one of those flexible V-Brake noodles.

Here's an old post from mtbr.com which has some pics https://forums.mtbr.com/fat-bikes/ragle ... 15927.html


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 Post subject: Re:
PostPosted: Tue Aug 20, 2019 6:12 pm 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider

Joined: Thu May 06, 2010 10:05 pm
Posts: 8969
Location: Scotland
Cheers, will have a look into that once I get around to fitting the brakes.


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 Post subject: Re:
PostPosted: Sat Aug 24, 2019 8:08 pm 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider
User avatar

Joined: Mon Feb 11, 2008 12:03 pm
Posts: 6809
Location: held captive by baby haggis in a cave in Scotland
Hi guys
Am currently sitting in a pub in Stockton on Tees ready for the VCC Jack Taylor ride in North Yorkshire tomorrow. It’s taken me about 9 hours and 450 miles so far since I left work yesterday.
One consolation was I had to detour through Durham to pick up a 1963 frame I bought a couple of months back.
It came with a set of wheels and while the frame may have been built, it was never used and the wheels are are as built. Never used. Sachs hubs and Dutch tubs 27 x 1 1/4 built by race wheels Birmingham. Found in the guys mother in laws loft and believed to be her husbands sisters husband. Unfortunately they are long gone and the sister in law has dementia, so after several months the trail comes to a dead end. It was just found when clearing out the mother in laws loft in a bin bag. Several chips but as good as new. Well pleased.


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 Post subject: Re:
PostPosted: Sat Aug 24, 2019 8:27 pm 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider

Joined: Thu May 06, 2010 10:05 pm
Posts: 8969
Location: Scotland
Enjoy your time down there with the smoggies, I lived in Redcar for a few years (and only a brief few years thank god! :lol:).
Weather is looking good for tomorrow 8)

Interesting how these bikes and parts come into our possession sometimes isn't it?
I just bought a Cannondale from a chap who found it whilst clearing out a garage for a friend, i believe the previous owner had passed away. :(

My other half says she hopes she goes before me, she doesn't want to have to deal with all the bikes and related stuff I've accumulated :lol:


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 Post subject: Re: Re:
PostPosted: Sat Aug 24, 2019 9:10 pm 
MacRetro rider
MacRetro rider

Joined: Tue Mar 29, 2011 6:06 pm
Posts: 2645
Location: Roamin' in the gloamin'
jimo746 wrote:
My other half says she hopes she goes before me, she doesn't want to have to deal with all the bikes and hardcore porn I've accumulated :lol:


Jamie, I’m surprised you’re not at Comrie for the singlespeed nationals. Mind you I bet it was a brutal day out. I struggle there with 32x50!


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 Post subject: Re:
PostPosted: Sat Aug 24, 2019 9:19 pm 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider
User avatar

Joined: Mon Feb 11, 2008 12:03 pm
Posts: 6809
Location: held captive by baby haggis in a cave in Scotland
I decided a long while back that the Jack Taylor weekend would come first this year. The single speed isn’t the same without Brian anyway, though I did have his entry but to be honest, I have a bit going on and it would just be too much as I thought of doing it Sat then driving down here for Sunday morning but to be honest it would just make both things stressful.
Yeah it was a good buy. I have been worried about buying it off of photos and from a guy who knows nothing about bikes. It was a fair price but seeing the condition and the fact he threw the wheels in it is now a bargain.
I helped originally to identify it and pointed him to where to sell it. I was glad I paid his wife as the money was for his mother in law. She had no idea and only vaguely remembered it coming from her sister in law when she passed. Clearly covered in the bag as while a couple of chips the paintwork is bright and vibrant and the only defect is the Reynolds 531 decal is crinkled and all dried and flaking as these went on after clear oat. So not protected. Wheels have some pinpoint rust spots but not a mark of fitting, use and never had a brake pad touch them. I knew what it was as the guy gave me the number and I have access to the copies of Ken Taylor s build books so knew the size, model and the fact it was finished on 23/7/1963


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 Post subject: Re:
PostPosted: Tue Aug 27, 2019 4:49 pm 
Classified Mod
Classified Mod

Joined: Wed Dec 30, 2009 8:34 pm
Posts: 14267
Location: Fife in Scotland
Am I right in thinking Garmin do servicing?
My Edge 800 screen has frozen and none of the buttons are functioning.
It's probably needing updating anyway.


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