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PostPosted: Tue Jan 04, 2011 11:23 pm 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider

Joined: Thu May 21, 2009 11:02 pm
Posts: 5252
Location: Falkirk! But I am a Fifer so that's OK...
velomaniac wrote:
It does sport my by now signature ghost ring tensioning ...

I'm probably going to ghost ring as well - 24T chainring is 51g versus 87g for the tensioner. Is it robust enough for off-road duties? Seems stable enough bouncing the back wheel up and down in the basement, only problem I can see is it hitting the chainstay.


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PostPosted: Tue Jan 04, 2011 11:30 pm 
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Location: Sol Kitts
zigzag wrote:
velomaniac wrote:
It does sport my by now signature ghost ring tensioning ...

I'm probably going to ghost ring as well - 24T chainring is 51g versus 87g for the tensioner. Is it robust enough for off-road duties? Seems stable enough bouncing the back wheel up and down in the basement, only problem I can see is it hitting the chainstay.


Thats where granny ring ratios will help, brings the chainline in and increases chainstay clearance.


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PostPosted: Tue Jan 04, 2011 11:39 pm 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider

Joined: Thu May 21, 2009 11:02 pm
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Location: Falkirk! But I am a Fifer so that's OK...
kaiser wrote:
Thats where granny ring ratios will help, brings the chainline in and increases chainstay clearance.

:idea:
I wish the wee chainring up front didn't look so bad.


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PostPosted: Tue Jan 04, 2011 11:47 pm 
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zigzag wrote:
kaiser wrote:
Thats where granny ring ratios will help, brings the chainline in and increases chainstay clearance.

:idea:
I wish the wee chainring up front didn't look so bad.


Aye it does look quite feeble. I can't help but shake my head and 'pffft' when I see it :twisted:


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PostPosted: Wed Jan 05, 2011 12:00 am 
MacRetro rider
MacRetro rider

Joined: Fri Feb 09, 2007 4:16 pm
Posts: 8658
I'm using 24T : 15T with a 74mm BCD inner chainring on a 110mm BB axle. Result inner ring a gnats whisker (1-2mm) from chainstay but allows a 32T ghost ring with oodles of clearance and adjustability. If you've got the chainline as straight as possible and your ghost rings got long enough teeth without shifting teeth/ramps then provided you have enough tension the ring will not come out. I used the system at Strathpuffer Lite, 4 laps on rough rocky terrain and not once did it come loose.

Front ring may look naff but ghost ring is sooooooper smart 8)


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PostPosted: Wed Jan 05, 2011 12:22 am 
Gold Trader / MacRetro rider
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Joined: Wed Aug 22, 2007 12:23 am
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They do look cool I agree. I am just waiting on my Ritchie grips and I will be all done- had a bit of fun with some decals tonight damn the extra weight!


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PostPosted: Wed Jan 05, 2011 7:09 pm 
Gold Trader / MacRetro rider
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Joined: Wed Aug 22, 2007 12:23 am
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so is anyone able to pick up big eck for dunkers? (he has no transport) If no-one from the east can do it, I will but it does really add a big detour so in an ideal world.....


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PostPosted: Wed Jan 05, 2011 7:51 pm 
Gold Trader / MacRetro rider
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Joined: Sun May 25, 2008 11:03 am
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Location: Sunny Glasgow
clockworkgazz wrote:
so is anyone able to pick up big eck for dunkers? (he has no transport) If no-one from the east can do it, I will but it does really add a big detour so in an ideal world.....


Im also looking for transport.Meant to say earlier :oops:


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PostPosted: Wed Jan 05, 2011 7:58 pm 
MacRetro rider
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Joined: Fri Mar 09, 2007 2:11 pm
Posts: 8700
Location: DUNDEE
provisional map up...
http://www.retrobike.co.uk/forum/viewto ... 139#976139

Are you riding this year Dyna or just sorting out the excellent post ride entertainment like last year?


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PostPosted: Wed Jan 05, 2011 8:07 pm 
MacRetro rider
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Joined: Sat May 22, 2010 7:25 pm
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Location: Edinburgh
If I have my car up and running by then I should be able to help out. Depending on borrowing a bike rack that takes more than one bike.


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