samsavvas
100 W
Hi folks,
I have a quick query about BBSxx installation practice. I recently installed my 2nd BBSxx - a 350w/36v - on a Surly LHT built up as a commuter/every-day transport hack. It's the first time I have had to deal with the potential interference with the under-the-BB route of the rear derailleur cable. How do people do it? I know you are supposed to have the motor casing butt up hard against the down tube to stabilise it and resolve any tendency for the drive unit to try to twist around it's BB mounting. But unfortunately on the LHT this pushes 8mm or so into the rear gear cable's route under the BB.
Do you just accept this and let the cable run against the casing? Or do you mount the motor off-set a bit, rotated down maybe 10mm and away from the down tube? It seems to hold ok in this position statically but I'm worried that under repeated torque loads it may work it's way loose. Maybe this position would be OK if I glued in a really solid plastic or rubber spacer between casing and d/tube?
What is established practice please or do the engineers on the list have a recommendation? Kepler - has this 'problem' vexed you at all?
Thanks,
Savvas.
I have a quick query about BBSxx installation practice. I recently installed my 2nd BBSxx - a 350w/36v - on a Surly LHT built up as a commuter/every-day transport hack. It's the first time I have had to deal with the potential interference with the under-the-BB route of the rear derailleur cable. How do people do it? I know you are supposed to have the motor casing butt up hard against the down tube to stabilise it and resolve any tendency for the drive unit to try to twist around it's BB mounting. But unfortunately on the LHT this pushes 8mm or so into the rear gear cable's route under the BB.
Do you just accept this and let the cable run against the casing? Or do you mount the motor off-set a bit, rotated down maybe 10mm and away from the down tube? It seems to hold ok in this position statically but I'm worried that under repeated torque loads it may work it's way loose. Maybe this position would be OK if I glued in a really solid plastic or rubber spacer between casing and d/tube?
What is established practice please or do the engineers on the list have a recommendation? Kepler - has this 'problem' vexed you at all?
Thanks,
Savvas.