Search results

I replaced the Nexus7 hub gears with a Nuvinci CVT instead... 350% range instead of the old 244%. I have a 21tooth cog on the Nuvinci as I cared far more about hill climbing than top speed. I did try an 11tooth sprocket for a while which gave a top end assist speed of around 24mph but I changed...

Succombs Hill.... no problem :) I wasn't fast up there, but at least I wasn't sweating either. My agattu really can climb any hill.. albeit at 4.5mph... With my modified gearing, cruising speed on the flat is a healthy 17.5mph. You do need to pedal though as walk-along throttle has very limited...

My personal choice for data logger was the Raczing Wilog. I liked that it used my mobile phone for displaying all the data as I already had that attached to the handlebars on my bike. It meant I could get the wilog installed very neatly next to the battery and still see how much current I was...

The most often quoted figure for average power usage in real-world conditions is around 10watt-hours per mile. From my own long distance rides, that seems about right (30 miles from a 260Watt-hour battery). I've done some big big hill climbs on a 'derestricted' bike (~450W average motor...

Hi Tilson. I'm pretty much certain that it doesn't just use voltage alone. The battery meter seems to be measuring watt-hours rather than voltage (certinaly for most of it's range). The final cutout I would expect to be based on voltage though.

The BMS protects the battery. On my 20Ah Ping pack, the BMS has a 40A current limit set. The Fuse would be to protect your wiring (which in my case is only good for 30A)

25.9v is the 'nominal' voltage of the pack... which is the voltage it reaches when 90% of the capacity is used up. The voltage drops off very rapidly after that. I've recorded all the charge cycles for my battery since new, so I know for certain that the slow flashing light starts pretty much...

I was doing a conditioning run on one of my batteries a couple of weeks ago. It just so happens that I had a datalogger attached when I did it. I found the dropoff of power once the battery goes below 26v to be very noticable. Just before the final cutout happens at around 22v, the system is...

Thanks Alex - I'll give them a call in the morning. Edit: Just an update to the thread in case anyone cares.... The problem was indeed a faulty controller. I installed the replacement (took about an hour) and it worked first time. Powacycle's spares department were very responsive and shipped...

I ordered my Ping 29.7v, 20Ah pack directly from Ping via his website. It was cheaper than ebay and besides which, I don't have an ebay account anyway. No problems with the service. Ping gave excellent customer service.

Can anoyone tell me where to order spares for a Powacycle Windsor? Strider has dropped the faulty windsor discussed earlier in this thread round to me for fixing. Having examined it, my conclusion is that it's either the controller, or the hall sensors in the motor so I'd like to order a...

Yes - the motor controller (regulator) will most likely be responsible for determining the cutoff voltage, although many BMSes also have a cutoff voltage built in. It would probably be very unwise to try a 36v pack on your 24v(29.4v) controller though as it is likely that it has 35v rated...

You may find a 24v (26.4v) ping pack to be disappointing if you're used to a 25.9v lithium-ion pack. The LiIon pack will deliver most of it's useful energy from 29.4v when it's fresh-off-the-charger, down to 24v when the battery is empty, whereas an 8-cell ping pack will deliver from 27v when...

I love the Cruiser, but hate marmite. Aiden - Do you have a bigger pic of the cruiser you can post please?

Yep - the inverter is a far better option. That way you can always start the car's engine and burn some fossil fuel to get extra watt-hours.

It says the battery inside it is a 12v, 17Ah = 204 Watt Hours... and then the inverter on there would only be about 85% efficient... plus the bike's charger would be about 85% efficient... So you'd get about 147 watt hours into your bike battery. Not enough to fully charge any e-bike battery...

As an aside to this, studies have shown that the braking/accelerating action of cars in congested traffic under 30mph follows Hookes law for compression waves travelling in springs. The compression wave of people braking and then accelerating progresses along the congested traffic at around...

Does the radiation help? :D :) :D :)

I was my bad back which got me into e-biking in the first place. I put my back out about 5 years ago when moving furniture around and it has never been the same since. A friend of mine gave me two rubbish chinabikes when he moved into a flat, and although I was initially very skeptical of a...

I guess that posting on forums is just as bad an idea before morning coffee as it is after evening beer :) 18650 cells aren't just for telecoms though... As I mentioned before, they're also for powering the Tesla roadster.