Topic bearings (amended):
Just exchanged the original ones in my HS against SKF with following experience:
Put the bearings in the refrigerator for 3 hours at minus 25 Celsius and the sidcovers at ambient 20 Celsius, clean and polish the bearing seats in the sidecovers with car wax protection - the bearings slide in like a charme without any press.
If this does not work take e.g. a M12 threadbar, which could be used as a wonderfull press.
Than polish the bearing seats on the axle with car polish and put the stator into the refrigerator for one night at plus 2 Celsius. Mount the sprocket side cover with the nine screws. Then heat the inner ring of the bearings in the sidecovers with a soldering iron (not too long). Next in dry ambient air let the cold stator snap into the magneting ring (be sure nothing is near to the stator like e.g. the tail of you cat or dog). The stator snaps in with such an enormous force, that the sprocket side bearing is well done already. Thereafter without delay strive the cable sidecover over the axle. Push by hand until the 9 screws do engage - then work carefully on all 9 screws half a turn one after the other until the side cover is in. Thereafter push again with hand force - there might be a last millimeter to go still. Ready you are
For the Tandem with the HT and the overall heavy loads during riding the original bearings are still in use without any problems.
Topic freewheel:
The expensive 8 sprocket freewheel from a famous Northamerican dealer started to make some noise at each round of the wheel (Tack, tack, tack) after a record trial with some additional 1500 Watt from 4 legs (tandem). These muscle watts applied at the outside smallest sprocket with the respective lever apparently were too much load for the freewheel, which up to that trial ran perfectly, except for the largest sprocket, which despite of a washer could not be used as the chain would strive the screws of the sidecover. I have exchanged that one with a 14 Euro Shimano 7 sprocket freewheel now. No issues with the biggest sprocket anymore and it works perfectly with the 8 gear shifter, as the distances between sprockets apparently are the same than for 8 sprockets. With such a hub you normally anyway need only the 2 smallest sprockets.
Topic Controller:
I am more than satisfied with my sensorless Lyen. It always starts in the right direction from zero. So what do we need halls for? They only need valuable space in the axle channel, which could be used in a better way.
Topic Thumbnail:
Only a thumbnail is not enough. I had a near miss on the HT recently where the thumbnail was nearly gone already. In addition to the thumbnail you need to turn the inner plastic peace on the axle by 180 degrees (only for first batch motors) and drill a 6 mm hole vertical to the axle for the cables. Be sure to leave the inner part (hub side) of that plastic peace for 2 mm in original condition, so that contrary to the original cable outlet this new one holds the cable and the thumbnail entirely down (hope this is clear enough - if not I can send some pictures).
Overall:
Basically these Crystalyte hubs are wonderfull - lots of fun from
to
And the cruising range is also top - the 86 percent max efficiency as per Crystalyte webpage seem to be real and is exactly at those operating points where you need it.
Bikesport
