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PostPosted: Fri Feb 26, 2010 10:08 pm 
Gold Trader
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8) 8) 8) a lovely build indeed.
can see the amount of time you put into it. love every bit of it. 8)


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PostPosted: Sat Feb 27, 2010 1:26 am 
Old School Grand Master
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Posts: 3186
Location: NFA
JeRkY wrote:

Thanks all for your kind comments. As for a BOTM, I fear that a "modern" full suspension downhill rig wont stand a chance against a gate sized late 80's rigid on here. Perhaps if there were a special month for UK made downhill bikes, in red, with a blue spring it may stand a chance. :lol:


Nonsense man, this is a fantastic machine, rare, ultra desireable, and retro too...


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PostPosted: Sat Feb 27, 2010 1:41 am 
MacRetro rider
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Location: Democratic republic of Coquetdale
JeRkY wrote:
johnnyp3000 wrote:
awesome! I can't believe I never saw this in on your bike. No chain device?


The design of the swingarm actually gets in the way of many of the period correct chain devices...


I remember seeing one of these raced at Peebles years back..yes, push up track. Chain device was a pulley kind of affair on the top of the chainring?


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PostPosted: Sat Feb 27, 2010 10:52 am 
Retro Guru
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Joined: Thu Aug 23, 2007 9:19 pm
Posts: 1568
Location: Europa
Amazing.
British engineering in the form of ride-able art.
Worthy of BOTM for sure.

...now, if only I could find one of the dark-blue anodized 24-inch dirt jump frames I saw in a magazine review...


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PostPosted: Sat Feb 27, 2010 11:34 am 
retrobike rider / Gold Trader
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Joined: Sat Jan 27, 2007 10:35 pm
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Location: The desolate flats of Cambridgeshire
Simonside resident wrote:
JeRkY wrote:
johnnyp3000 wrote:
awesome! I can't believe I never saw this in on your bike. No chain device?


The design of the swingarm actually gets in the way of many of the period correct chain devices...


I remember seeing one of these raced at Peebles years back..yes, push up track. Chain device was a pulley kind of affair on the top of the chainring?


There are ways of doing it, but on reading around the topic, and on looking atdifferent devices available at the time none of them were really a great fix. And most of them needed some bodging to get in the right place.

The problem is the clearance between the chain ring and the pivot of the swingarm is very small. there is the option of running a longer BB axle but this affects chainline fairly dramaticaly.

Also the chain tension provided through the EGS mech (favoured by the French DH scene in 98/99) is significantly greater than that which I have seen through a traditional format rear derailleur, Which hopefully helps a little to keep the chain ontrack up front.

It is something I shall look into though.

Cheers for the further comments!


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PostPosted: Sun Feb 28, 2010 11:22 pm 
Retro Guru
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Location: muddy, grimy yorkshire :D
Man, that is sweet! You'll have to bring it out to Stainburn in the summer if you get it to Leeds.... on a dry day of course!


JeRkY wrote:
Also the chain tension provided through the EGS mech (favoured by the French DH scene in 98/99)

wondered where the hell that mech came from. ive never seen one...


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PostPosted: Mon Mar 01, 2010 7:45 am 
BoTM Winner / Gold Trader / Rider
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Joined: Tue Feb 24, 2009 10:00 am
Posts: 1737
Location: Cumbria
Very cool, love it 8) Great job Jerky.


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PostPosted: Mon Mar 01, 2010 7:07 pm 
retrobike rider / Gold Trader
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Location: The desolate flats of Cambridgeshire
albash82 wrote:
Man, that is sweet! You'll have to bring it out to Stainburn in the summer if you get it to Leeds.... on a dry day of course!


JeRkY wrote:
Also the chain tension provided through the EGS mech (favoured by the French DH scene in 98/99)

wondered where the hell that mech came from. ive never seen one...


Oh I am sure I will be about Yorkshire way during the summer, whether the 500 comes with me is a different question... think it would put the suspension out on my car :P


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PostPosted: Tue Mar 02, 2010 3:09 pm 
Retro Guru
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Joined: Mon Apr 16, 2007 12:37 pm
Posts: 805
Location: Kenilworth
That is absolutely awesome, fantastic piece of kit!


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PostPosted: Tue Mar 02, 2010 9:58 pm 
West Midlands AEC
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Joined: Wed May 14, 2008 11:06 pm
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Location: Stow on the Wold, Glos
Brilliant work Rob , Great dedication 8)


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