Hi bob,
My bike is shifting really well, I "feel" it shifts better than stock but that is so subjective, "feelings" should be disregarded.
If it really
did make a big difference to use ball bearings, the makers would all be fitting ball bearings to jockey wheels of all but the cheapest derailleurs. But they don't.
Here is a whole thread worth reading all the way through. I just now found it by searching.
I'm still pleased to have and I do enjoy these Dutch made ball bearing jockey wheels. I viscerally disliked the...
principle...of the plain bushing bearings because they are crudely shielded. The bushings run in a slurry of gritty oil and water. I've seen Shimano wheels wear out from neglect.
Maybe these new ball bearings are going to become badly contaminated in no time: in which case they will soon seize,because ball bearings are not tolerant of solid contaminants. I will report any failure or problem.
As it stands today I would buy them again for the feelings they provide : )
PS: my "upgrades" are customizations to please my own likes. I think the bike as delivered is almost beyond criticism in its specifications. Tora made all the right choices.
For instance, the controller's assist settings:
- ECO permits up to 5 amperes
- 1 permits up to 8 amperes
- 2 permits 10 amperes
- 3 permits 15 amperes
- "S"(should be "4" in the present scheme of steps) allows up to 20 amperes
Thereby, a rational system of stepped up assistance. I could never have thought it out any better.
We will hope that in some future production the assist steps will be labeled "0" for no assistance but speedo/odo and headlight capability, and 1, 2, 3, 4, 5. That would be ideal!