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Hi Guys, Obviously this is on the front pedelecs page so most of you probably know about it now. Just wanted to say that I'm gutted that they invented it before me! Now my final year project scope has to change! Still, its a great invention (minus the bluetooth controls). They would be...

My word, what are you talking about! I want to share in the laughter! Won't you please post the name of the person you are talking about! No wait, I think I just figured it out.... either that or the person I just read posts from is also hillarious! Do I win a cookie now?

Just a quick bit of info I just found from a company I used to work for: It seems the infrastructure is well under development!

I'm going with nuclear fission and super conducting wires. Its done... theres a man deep in the irish countryside who lives off his own nuclear fission mini plant and shields himself from all knowledge with a superconducting magnetic force field! At least I think there is :confused: I...

Followed by the 'Virtually Dark Age', where all our power comes from solar panels in orbit beaming down energy to earth, and sadly, blocking our sun, thus ruining my perfect tan...

Thanks Nick! I'll make sure I investigate that when I do my controller designs. Flecc, check this webby! It told me all about SLA's LEAD ACID BATTERIES, BATTERY HISTORY TYPES AND DEVELOPMENT THE SOLAR NAVIGATOR WORLD ELECTRIC NAVIGATION CHALLENGE, NELSON KRUSCHANDL In short, batteries...

Apparently my 'basic knowledge' is a little too basic :D . Could you explain that a little? Are you saying that a normal diode saps lots of volts when the current passes through? Doesn't the MOSFET require power to work anyways? Wouldn't the energy lost through the small circuit make the...

I am doing a Bsc/Hons Design Engineering degree, which pretty much leaves me open to join any field of either design or engineering... or both! The modules I have taken are pretty varied so I hope I have a basic understanding of most principles. I want to take a Masters in something like...

Ha! Thats brilliant! Whislt my youth makes me hopeful, it's also the subject of my degree, so I'm planning on helping out as much as I can once I hit the industry, (and once I have some private capital to invest in it). EEStor are working with GM and their Volt, which is going into production...

Hi Guys, I only just came across this post, so please excuse me for going backwards a bit. Over the next 10 years several things will happen. Battery technology will get much better, and we will start to see combinations of supercapacitors and batteries similar to what eestor is...

Heh, yeah that's what I was on about :p ! I'm basically using it for technical feasibility, saying that 'Yes' it is worth it to provide assistance, and heres how much the motor would need to provide! (Although your first way still accomplishes this :) ) Thanks Miles, for the equation. Now I...

Thats an interesting principle! I also forgot to thank you personally for the link to the cycling information papers you provided; so uh... Thanks!:o Also, thanks to David for passing on his links! A completely irrelivant point I'd like to rant about is the policy regarding items in...

Thanks for the input guys! Although I am still confused as to how to work out the actual rating of the motors power. I was told to use P=VxI, which tells of the battery supply. So how does the back emf of a motor calculate the power when the voltage is variable with speed? Especially when...

Hi Dave, I think you and flecc are saying the same thing? You both agree that with an unlimited supply of energy any motor could power itself at its peak power, be it 500w or whatever, indefinately (with proper cooling)? So with the regulatory speed limit of 15mph, the motor has to reach...

Thanks flecc, thats pretty damn sound reasoning! Sorry Tiberius, was stuck in Canadian mode where they dont practise maths, they do math! :eek: I think I've seen this before somewhere, but I don't actually own a bike at the moment, so I cant test it; how much torque is required to get...

Thanks for the input guys! Tiberius: Does that mean that there is something wrong with my math?:confused: Also, I think you are probably right. 750W would be enough to provide those torque levels, but the Hiezemann motors are German arn't they? And when they go uphill they do so at a...

I emailed him and asked to quote his research in my research, but he didn't reply. I guessing as his email address is a university email, he has finished his final year and left; thus meaning he doesn't get his email anymore :( Did he send you a copy of the PDF for review flecc?

Hi guys, Some more theory questions :( I am struggling to find any mention of the typical motor torque provided by various e-bike hub motors. Ebikes.ca quotes the average direct drive at around 35nm, and planetary geared ones as much as 80nm. I'm not sure how that is possible considering...

Thanks! Am looking into it now. From what everyone is saying, it is seeming like I have a bit more to think about. I'll be honest in saying that the only time I cycled as a kid was to school and back on a mountain bike, so I'm not very savvy with technique! I think the main benefit of...

Thanks guys, I appreciate the criticism. Hopefully once this one is done, I can create a better more targetted questionnaire. Apologies if I offended anyone with the survey; it was rather brashly put together by me, a young whipper snapper, with not a lot of foresight! Unfortunately its...