Recent content by Ken Taylor

Both handsets run IP bike always and often I run Spotify, Speedict or Google direction finding on a new route. While I wish there were two power channels, cycling apps only provide a single power channel, intended for human power. So, because I measure human power and bike power I've found the...

I'm wondering why you want to "turn on a USB power port". If you want to, then a power switch on the battery provides a mechanism to do it without modifying the motor. The batteries from Em3Ev come with an off switch. I have one of these but I also use other batteries that are always on. I run a...

I've been puzzling over this and come to the view that downloading a driver direct from FTDI is exactly what you shouldn't do. FTDI have a problem in that they were losing market share. Other people were supplying chips that were different internally but had the FTDI interface so worked with...

This is a question for the programming thread but the answer is:- I've tested that this setting works. As an aside and because I see you also have a 350W BBS01. You can make a 350W BBS01 the same as a 250W BBS01 by changing the Limited Current (A) from 18 to 15 or vice versa. The only other...

A right one is difficult but I got a left crank arm from ebay. Fortunately I only damaged the left one. You need 170 mm with minimum offset. Something like this...

On a slightly different note I'm finding habituation kills your judgement on the effect of assist. The first taste seems great but like a heroin addict, you keep needing more to get the buzz and withdrawal is horrible. I ride around Lake Burly Griffin several times a week which is probably...

There is still some interest in how to avoid damaging the controller. One person lost two of them. Em3EV has suffered warranty claims and astmacca sums up the current, incomplete, consensus Keeping the cadence up wouldn't be necessary if there was phase current limiting in the Bafang...

Yes, I'm curious too. Hopefully I'll see an explanation here. I thought the suggestion of a high limit to stop the the motor pushing faster than the rider can match was convincing. There are substantial energy savings in limiting the assist speed, at a rideability cost. I don't know but on on...

I might give it a go but it's a long way down the priority list and it will not happen this weekend as I'm participating in the lifecycle event. It's too hot to ride at the moment, hence the reply. The data above is from early testing before I realised that setting Keep Current(%) to 100 mostly...

I've found setting Keep Current(%) to 100 makes power largely independent of cadence which is not "almost the same" as the trace below with Current Decay set to 8 and Keep Current(%) set to 20. In the other traces Keep Current(%) was also set to 20 but Current Decay was set to 4 which were...

At 2.11 http://youtu.be/VVPsDme0YHU?t=2m12s request goes to 0 for about 2 secs but response doesn't. Why is that, perhaps a loss of signal?

OK, but I don't consider them optimal yet and optimal depends on what you are aiming to achieve. I'm trying to optimise for 80km - 200km ranges, riding with stronger and lighter unpowered riders. Just enough assist to stay with the best of them. It is apparent there are no settings that get all...

I've no doubt they are "following each other pretty closely" but your explanation indicates the current instrumentation can not show the delay between request and response. Great project.

I'm not sure I've understood this but I've read it as the Mode setting on the Throttle Handle tab is affecting behaviour in PAS mode. I'm fairly confident this is not the case. Settings on the Throttle Handle tab only affect behaviour in throttle mode. I've looked through my ride data and I...

You need instrumentation and post ride analysis in Strava or similar to reasonably quantify your behaviour. There is also a discussion on cadence in the programming thread including test data for the BBS01 in this post...