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there is no BMS in those SLA batteries. Anied: don't worry too much about leaving these sealed lead acid batteries for months - they are quite tough if you charge up to full and keep indoors for a few months at a time. They are also cheap to replace (about £60). Please note: the battery...

XOFO are a conservative lot. The controller is quoted 12A, 25A max. I wonder if they fit a high current BMS to their bottle battery in the kit. Space for the BMS is restricted by the diameter of the bottle.

I noted that maximum torque 31.06NM @ 170 RPM. Assuming bike + rider = 120kgs, 170RPM on 700C wheels = 6.35M/s (14.2mph), gradient: 6.8%. Are you happy with this performance?

small plastic parts can easily come off and get lost in transit. If it's the piece is a black plastic clip at the end of the metal hanger, I am sure that any good LBS should be able to provide you with a replacement.

it looks extremely well designed - no need to grease the motor. Bosch, here comes a proper competitor. Shame it can't be fitted to a standard bike.

Yes, I did. At the end, it was the fear of broken spokes with a powerful hub motor that put me off the BPM. If you keep tightening the spokes, the holes get enlarged and eventually, you'll have to relace the whole wheel. I asked XOFO if I could have their motor laced to to a rim with eyelets...

XOFO is cheaper than Bafang - But how does the quality compare? When I wrote and asked XOFO last year, they said their BPM is also better than Bafang because something about the way the magnets are mounted? screw versus glue? and also something about better waterproofing, the way XOFO mount...

The controller normally deals with reverse power connection, under voltage and over current load and some (sine wave controllers) also cut off connection to the battery on reverse power flow. The battery's BMS should instantly cut off the power if there is over-voltage charge, over current load...

pull up the rear carrier with a hanging rope or change the side propstand for one of those two legged ones:

the mounting support (black blob at the front with wires) is clamped to the seat tube or down tube. The battery is then slotted into it. A bit flimsy IMHO, the Bagier bag system as reported in this thread http://www.pedelecs.co.uk/forum/electric-bicycles/15611-pas-sensors.html seems better...

it could have a large fixed platform, the kind of place for fishing. I wonder where this lake/pond is.

find a lake with a pontoon and a promenade then wait for the rainy season?

I thought you could use a magnetic loop to generate enough power for a PIC chip and program it to set pulse rate for maximum assist to whatever you like - I reckon 25mph should be enough for most of us.

agreed, but Frank is going to fix it with his 48V batteries. Actually, you can run the BBS01 with 48V if you like. I wonder what the Woosh CD is like with a booster battery.

where does that leave the bikes fitted with the old SWX then?

true but there is no sign of of 'porpoising' when speed changes, when the guy starts or turns or stops.

I wrote to them a few months back asking about this - got a reply: they don't make them any more.

I must say the bike video looks dodgy, The ride is too smooth, it cannot be a modified aqua-skipper. At the end of the video, the rider sunk into the water, meaning that there is not enough static bouyancy to keep the rider in the riding stance, so a fairly substantial vortex is needed below...

virtually all that kudosdave said is true, except that gear snatching happens also with hub bikes in similar situation when you pedal hard uphill. It does not take long to learn to minimize this annoyance on a crank drive. On balance, crank drive is better than hub drive uphill, downhill and on...