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PostPosted: Thu Oct 20, 2011 10:12 pm 
retrobike rider
retrobike rider

Joined: Mon Sep 21, 2009 3:17 pm
Posts: 944
Location: Anywhere that is not on this planet
I have just changed a wire around and now i have sequential gearing where the front changes all by itself. I have stunned myself. watch the vid here

http://www.youtube.com/watch?v=eOZATgN5 ... ture=feedu

thanks andy


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PostPosted: Fri Oct 21, 2011 12:13 am 
Dirt Disciple

Joined: Wed Apr 06, 2011 12:06 am
Posts: 23
Location: ohio
WHAT!!!!????? HOW???


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PostPosted: Fri Oct 21, 2011 12:22 am 
Gold Trader / rb Rider / Special
Gold Trader / rb Rider / Special
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Joined: Mon Aug 31, 2009 12:26 am
Posts: 16165
Location: Rurally close.
Yeah how?!

Chainline out? Front mech not setup properly?

Or is it supposed to be like that?


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PostPosted: Fri Oct 21, 2011 7:52 am 
retrobike rider
retrobike rider

Joined: Mon Sep 21, 2009 3:17 pm
Posts: 944
Location: Anywhere that is not on this planet
cyfa2809 wrote:
Yeah how?!

Chainline out? Front mech not setup properly?

Or is it supposed to be like that?


Im not sure what has happened i think i have crossed a wire when i was putting the wires into the frame. i rode it and it feels strange in the fact that you are in first gear and then because you drop to second gear or or fourth or fith the system thinks ok you must be wanting to go faster so it puts the chain up on the big ring at the front and it will not release the chain from the big ring at the front until you shift back up to first gear or shift the trigger to send it back up the cassette.

I think what is happening is that due to the fact that the front mech can only move 2 shifts so when you go from 1st gear the press of the trigger one click sends the message to the front mech to move up and then if you go down the cassette by clicking again the message is still sent to the front mech to move in the same direction again but it can't due to the stops so it stays where it is and so the process is repeated all the way down the cassette. now when you then press the trigger to go back up the cassette a message is sent to the front mech to say go to bottom chain ring and then when you press to go up the cassette again the message is sent again to the front mech to shift down again but the front mech can't due to the stops. so of course this message is repeated as you keep pressing the trigger to go up the cassette.

basically one trigger is acting for both front and rear but the mechs can only go as far as the stops. the ride is strange but efficient

thanks andy


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PostPosted: Fri Oct 21, 2011 3:05 pm 
retrobike rider
retrobike rider

Joined: Mon Sep 21, 2009 3:17 pm
Posts: 944
Location: Anywhere that is not on this planet
This is the latest scenario with my crazy di2

http://www.youtube.com/watch?v=_EO3x-RvjxE

thanks andy


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PostPosted: Sun Oct 23, 2011 10:34 pm 
retrobike rider
retrobike rider

Joined: Mon Sep 27, 2010 12:17 am
Posts: 876
Location: At The Gates Of Dawn
That's brilliant - and like you said in the vid, you're a genius 8) Have you told Shimano?


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PostPosted: Mon Oct 24, 2011 12:11 pm 
Posh Mark
Posh Mark
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Joined: Wed Apr 18, 2007 2:49 pm
Posts: 5981
Location: As far from the city as you can be ....
Loving the video 8)

All sounds a bit like these guys have been at your flight control:

Image

I would be very worried if you wake up one morning and see this:

Image

I think the machines are taking over.

Time for the foil hat.

Image


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PostPosted: Mon Oct 31, 2011 7:46 pm 
Retro Guru
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Joined: Thu Mar 04, 2010 10:26 pm
Posts: 420
Location: Bristol
I wonder what srands would make of this?!


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PostPosted: Fri Nov 04, 2011 7:59 pm 
Retro Guru
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Joined: Wed Mar 21, 2007 8:13 pm
Posts: 1661
Location: fettling in the cave
you never cease to amaze! :D


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PostPosted: Thu Nov 17, 2011 1:00 am 
Dirt Disciple

Joined: Wed Apr 06, 2011 12:06 am
Posts: 23
Location: ohio
Did you ever figure anything out with your bike? Very curious


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