Originally Posted by
Winfried
Note: That bike came with a single chainring, that I needed to replace with a dual crankset to get a wider range for touring. Hence my problem.
Folders can be quite different from standard bikes.
In this particular case, even with the original 127mm, BSA 68mm
Kenli KL-08A BB it came with, the fork of a dual derailleur can't totally move inboard (it hits the rear triangle) enough without the chain slighly rubbing againt the derailleur fork; Moving the big ring yet further outboard with a 2mm spacer or a triple derailleur makes it difficult or even impossible to work because of its ~60mm chainline.
I didn't know those "E-type" derailleurs. Provided I do find one second-hand since they're no long manufactured, can they handle a ~60mm chainline?
https://www.youtube.com/watch?v=518ane6ONRU
https://www.ebay.com/itm/226344804407
https://www.taylor-wheels.com/front-.../3x8-top-swing
Note the Max tooth count of the sprocket the altus is used for... It WILL NOT fit Your bike with that 50T ring.
can you please post a few direct-on side pics of the drive side of YOUR bike? and also a measurement of the seat tube of the frame?
why have you chosen the 127mm Bottom bracket? what is the exact Crankset model number that's on the bike now?
how much room is there between the chain ring teeth and the Chain stay/lower frame tube that runs from the BB to the rear axle? a Downlooking Pic of that area would also help us.
what model front Derailleur is on the bike now, or that you have tried to make work? the number will be on the left side of the left half of the cage...
all we have to work with is the info you can provide here...
