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I'm sure you'll enjoy it!

Make sure the batteries are isolated from each other before charging. Other than that as you say make sure the voltages are reasonably close. Mine are both close enough straight off their dIfferent chargers.

Good luck, I'm sure you will enjoy it!

Our valley is not called Wildchönau (wild and beautiful valley is the translation) for nothing. All taken in the last couple of days. No wonder people want to ride E-bikes here!

Certainly in the mountains where I am that is the case. The Inn valley is flat, the cycleway follows the river Inn all the way from Switzerland through Austria until it joins the Danube. The section through the Tirol is 230km of mainly purpose built traffic free track! Loads of mainly German...

E-bike hire is a massive thing in Austria. Last year we had a new hire place open in the valley. They started with about 10 mainly Haibikes, this year they have about another 15 new ones. The hire place in the village where I am will not be replacing his mountain bike bike fleet, all new bikes...

Well done, enjoy your new position :)

No I don't have a more up to date one but it is clear even from some of your other posts that you were very aware that was out of date. BBSHD is not marketed anywhere as a 250W motor as well you know. As far as insults not contributing to the thread neither does misinformation especially from a...

Here we go again Woosh talking absolute crap! That graph is at least 2 years out of date, Yamaha recognised the problem of low cadence years ago! A BBSHD is not legal!

I said likely illegal, i.e. rated higher than 250w like a bbs02 or hd. I certainly don't disagree with the rest of your last post baring the dubious maths, of course most people even the lighter ones would prefer the extra power. I doubt there is that is legal that performs significantly better...

Woosh talking crap again, contradicting himself constantly. Bosch CX has 75Nm of torque, GiantSyncDrive Pro aka Yamaha 80Nm. Anything more than the CX / Yamaha is likely illegal, the Bafang quoted certainly is! This forum has deteriorated into a constant Woosh opinion / sales pitch.

Connecting in parallel is fine as long as the voltage is the same at the time of connection. It makes no difference what the discharge characteristics are as once they are parallel the voltage has no option other than to remain the same. I have been using an extender battery on my Yamaha Haibike...

Bosch wouldn't need to use it, their motor is more likely to be spinning at a realistic speed. Air is a very good heat insulator, most home insulation products work by trapping air in a confined space so you will never achieve equilibtium, the windings will always be significantly hotter than...

There may be plenty of air flow around the motor but there is none around the windings which is why Statorade etc was developed. You need to shift the heat from the windings to the outside air to keep the motor cool.

I bet I could melt the gears without any problems. Which motor type should I use on ebike.ca to model the XF08C, AN XF07 only shows an efficiency of 64% with a 17a controller at 10% gradient with a 100kg load. That means 36% going to heat (150W), I'm sure a hub motor can't dissipate that much...

Please define steep climbs, had a quick look on Google maps and Strava and it looks pretty flat to me around Milnathort.

The whole parallel group goes low together. No need for a smart BMS just make sure you charge fully occasionally.

So now we have gone down two gears and we are starting to make significant heat, your 800W in is now probably less than 600 out and slowing down. This is getting you further away from your optimum rpm than your original scenario making more heat instead of propelling the bike. At what point...

The OP is 20 stone so 217kg plus bike so maybe around 240kg. 8% is an incline not a hill;)