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something like the Imax B6 with DC PSU? http://www.coolcomponents.co.uk/lipro-balance-charger-imax-b6.html

this XMK motor is the clone of the XOFO motor with built in torque sensor XFC like in this Woosh Sport TS: Weight wise, it's about 3kgs + 300g for the controller, you are not far from the 3.7kgs crank drive kit BBS01 XOFO will bring out shortly (end of this month) a crank drive version...

I agree with d8veh, it's difficult to prove that x is more reliable than y, simply because you are looking at small probability and many variables. It's better to judge the quality of the after sale service through real cases reported here.

I think d8veh is right, it seems the battery needs checking. just a suggestion: try to discharge your battery into some light bulbs (eg 500W flood halogen) or bar heater - checking on the voltage every now and then. When a fair amount has been discharged, put the battery back on charge. That...

I applaud frankie's attitude. Not afraid to ask why. Note that his budget has more than doubled since. Didn't I say membership of this forum makes you spend more?

under £1000? Woosh Big Bear is difficult to beat!

smee, should have joined the forum before ordering! the site has a searchable database of all the models you can buy from sellers on the forum http://www.pedelecs.co.uk/buy/find-an-electric-bike/ and post about what you want to buy - that will help you get the best bike for your budget.

I didn't. All spokes must be evenly tensioned on each side. Wheels done by machine often put 10% less tension on the non-drive side. I did not recommend that either. I recommended that if you don't have a spoke tensiometer, you can ping the spokes with your fingers to find loosened spokes, that...

they feel tighter when you ping the shorter ones with your fingers, the spoke tension should be within 90kgf to 100kgs. The 300kgf figure is the force you need to break a spoke when it's being pulled. Sapim publish their datasheet for all their 14G in PDF. example: sapim super spoke: middle...

john F has a Santana CDL with 36V 15AH battery - a new one costs £300 from Woosh. He'd need 9 14.4V 5AH bricks, plus 9 Y-pieces, plus monitor, plus inline fuses, plus DC power supply, plus balance chargers plus case plus firebag to make a replacement. Not much cheaper than a ready made one. The...

yes, you are correct. The rear wheel needs to be dished to keep the rear wheel to the middle line of the bike, so there will be one side where the spokes are tighter than the other - but they should really be within 10%. The key to maintenance is prevention. The bolts and nuts of your new bike...

it is doable to build your own battery but commercially suicidal if you want to start a small business doing this. As d8veh said, simplest way is to buy cheap ready made 'bricks' and join them together and add a monitoring circuitry. You won't save much making your battery this way though. 3...

occasionally, spokes break, usually on rear hub motor wheels. Spokes break when the wheel is out of true or the stress gets too much. The spokes usually break at the elbow, where the steel is thinner and rubs against the metal flange of the hub causing metal fatigue. E-bike spokes are 13 gauge...

talking about mechanical components, where can you buy Ambrosio rims? Halfords don't stock Magura brakes, or Bosch Isis BB for example. On electrical components, I doubt that any of your customers would dare do it themselves in fear of voiding the guarantee.

just a very small point, the BBS01/02 have built in controller, making them about as easy to fit as a front hub conversion and without needing torque arms. BTW, the chainring has 46 teeth.

the reduction system is the easy bit - plenty of choice off the shelf. Big problem is, if you lower the RPM, you lose efficiency and torque big time. Efficiency is the main attraction of RC motors, the weight of the motor is not that important. Even if you could control the RPM without Hall and...

neat trick with the little bend in the metal ring. Love it.

you may need to upgrade your brakes if you want to fit a 500W rear BPM kit. I'd stick to 250W BBS01 kit which offers better speed and hill climbing performance than any 250W front hub solution you can buy at the moment (except d8veh's xiongda XD).

they are about the same but consider this: 1) 9 out of 10 controllers use 3.9mm bullets, 2) when you have to push wires into a small box, you do not want the cables to get snagged, round bullets are better. Also, you can work with bullets without looking, in the dark. Sometimes people go for...

the battery connector on the xiongda controller are the same bullets. That's the default, if you don't change anything. http://www.ebay.co.uk/itm/Motorcycle-Bullet-Connector-3-9mm-Male-Female-Japanese-Socket-Classic-Terminal-/170711501780