retrobiker273891
Retro Guru
The video didn't show anything regarding the 2/3+2/3 hanger. Still don't understand what that is tbh.
What is the maximum tooth sprocket you could fit on the back using a Deore DX rear derailleur?
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bold stelvis
Kona Fan
Just buying an extension is the sensible choice if you really want to try this 
as others have pointed out it might compromise shifting, especially at the high end of the gear range (ie the smallest sprockets) as its essentially just pushing the derailleur further away from the sprockets
It potentially has a negative effect on capacity as well - most people trying this sort of thing tend to be on 1 x setups up front, not a triple with a very small granny ring!
that doesn't mean it definitely won't work, just things to be mindful of if you're determined to try.
they are not expensive and likely to be accurately made as opposed to a DIY bodge if you're not entirely sure what your up to (which I'm pretty sure applies)
https://www.sjscycles.co.uk/gear-spares/ztto-derailleur-hanger-extender/https://alpkit.com/products/sonder-...Vwr5L9UiULPjq59Zi6aJxifEYL7cnZGygzdrmldSd9Db3
as others have pointed out it might compromise shifting, especially at the high end of the gear range (ie the smallest sprockets) as its essentially just pushing the derailleur further away from the sprockets
It potentially has a negative effect on capacity as well - most people trying this sort of thing tend to be on 1 x setups up front, not a triple with a very small granny ring!
that doesn't mean it definitely won't work, just things to be mindful of if you're determined to try.
they are not expensive and likely to be accurately made as opposed to a DIY bodge if you're not entirely sure what your up to (which I'm pretty sure applies)
https://www.sjscycles.co.uk/gear-spares/ztto-derailleur-hanger-extender/https://alpkit.com/products/sonder-...Vwr5L9UiULPjq59Zi6aJxifEYL7cnZGygzdrmldSd9Db3
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It's a double ring I believe, so a bit easier on the chain and the mech through its cage swing.
Do they make a hanger that replaces the hanger on these shadow mech (M771 will be a shadow rear mech so has the floppy hanger thing.) scratch that theat wa the 770, 771 was normal (old) style!?
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retrobiker273891
Retro Guru
Is that a question? Please elabourate if so as didn't understand it.
retrobiker273891
Retro Guru
Yes I know they are cheap, seen on sjscycles for a few quid. Would buy one if I feel the cause to.Just buying an extension is the sensible choice if you really want to try this
as others have pointed out it might compromise shifting, especially at the high end of the gear range (ie the smallest sprockets) as its essentially just pushing the derailleur further away from the sprockets
It potentially has a negative effect on capacity as well - most people trying this sort of thing tend to be on 1 x setups up front, not a triple with a very small granny ring!
that doesn't mean it definitely won't work, just things to be mindful of if you're determined to try.
they are not expensive and likely to be accurately made as opposed to a DIY bodge if you're not entirely sure what your up to (which I'm pretty sure applies)
https://www.sjscycles.co.uk/gear-spares/ztto-derailleur-hanger-extender/https://alpkit.com/products/sonder-...Vwr5L9UiULPjq59Zi6aJxifEYL7cnZGygzdrmldSd9Db3
Funny thing is I have read that using hangers increases wear but also not using a hanger and having the jockey wheel too close the the cassette will cause wear to damned if you do damned if you don't.
Since it already works as is I question whether there is any point adding a hanger if that too could cause wear.
Wear happens one way of the other anyway doesn't it so perhaps just accept as par for the course and ride away and replace with new parts if they do wear out.
retrobiker273891
Retro Guru
From that video I can see why, from the comments I read, e-bikes go through drivetrains like toilet paper with all the extra work it does!
If he is, then he is also all over the CTC forum with the same questions.I’m 80% convinced that this member is a sock puppet account for an established retrobiker who’s become bored/jaundiced with the scene and enjoys a good wind up!
(And before you cry “smelt it dealt it” - I promise it’s not me!)
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retrobiker273891
Retro Guru
Ok!
I got the new cable today and put it on.
Results...
Shifting is a lot cleaner and responsive but really only for the gears that would index before anyway with the trouble gears on either side still causing the same issues, just a bit less. It is closer but still will not index everything cleanly.
I can just about get everything to change but very very loosely. The highs and lows still complain. Granny gear lows are only just indexing with some jumping about and the high gears I have to overshift with click and push just to the edge before the next click to shift up a cog.
Now I have ruled that out I am thinking it is like the mechanic said earlier that the parts were just not made for each other. As such thumbies seem to be the way forward now! As @Imlach noted in an older thread "friction will solve all your problems".
I got the new cable today and put it on.
Results...
Shifting is a lot cleaner and responsive but really only for the gears that would index before anyway with the trouble gears on either side still causing the same issues, just a bit less. It is closer but still will not index everything cleanly.
I can just about get everything to change but very very loosely. The highs and lows still complain. Granny gear lows are only just indexing with some jumping about and the high gears I have to overshift with click and push just to the edge before the next click to shift up a cog.
Now I have ruled that out I am thinking it is like the mechanic said earlier that the parts were just not made for each other. As such thumbies seem to be the way forward now! As @Imlach noted in an older thread "friction will solve all your problems".
Yeah every time I've run combos outside spec I've used friction. If sticking to indexing it usually won't work well, as Ben said, it's not designed to go together. Usually you can make stuff work but not without caveats, so it's a balancing act on your part to determine what is worth the hassle.
retrobiker273891
Retro Guru
As thumbies were my preference even before experiencing this indexing quagmire it just makes sense and now I have good justification to use them!
Also good to get confirmation this is a common issue with more experienced tinkerers.
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