Originally Posted by
FBinNY
You have an IGH hub with vertical dropout. Do you use a chain tensioner, or did the chain just work out right? If no tensioner, is there some slack in the lower loop?
Old chain tensioner from the original rear derailleur (Shimano Altus) is still there. Otherwise I would need an eccentric bottom bracket to adjust chain slack.
Originally Posted by
FBinNY
Also do you have the right keyed anti-rotation washers, and do they key to the dropouts properly, with everything aligned?
Yes, I bought them separately, and I think so, I didn't notice anything unusual at least, looks fine.
Originally Posted by
FBinNY
How and why is the wheel not aligning right, is the axle width wrong, or is something in the way?
Well, firstly, there was a little too much width between two dropouts, I had to tighten the end nuts to remove that extra width. Secondly, there's a difference compared to the old hub. The axle is not round (it has a specifically shaped cross-section, for use with anti-rotation washers), and its axle's orientation inside the dropouts is almost vertical. Hence there's a bit of freedom, the axis does not sit naturally straight in the dropouts, if you know what I mean. But another problem is that the wheel seems to be offset to one side, I judge by its orientation relative to the mudguard. It wasn't like that before IGH was built into it... And again, no matter how I tried, I couldn't really align the axis in the dropouts so that the wheel is at least straight while being offset...
Originally Posted by
FBinNY
If everything external is right, and given that you've opened the hub once already, I'd open it again and see if there's anything obvious such as migrated grease making the pawls sticky, dirt where you don't want it, or any chipped parts or metal chips in the oil sump.
I'm not really experienced in this, so a question which arises in my mind is: will I have to remove previous grease and oil (if there's no dirt inside) in order to make a second attempt in lubricating the hub? Or I will just have to, say, add extra grease and possibly oil, if there's no grease around pawls?
Do I understand it correctly that probably the pawls simply get stuck in free rotation mode sometimes, which normally happens only when back-pedaling?