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Hmm, looking at the figures (from my perspective) i'm more suprised that you dont destroy 18650s more than you do, but then i suppose that explains the need for a cell/cell bms? :oops: I'ts cool, lm used to polymer batteries, i have made enough for multirotor UAVs by now. By nature defying...

Ok, back to batteries... So going down the "forking out on pristine cells" and keeping my initial battery outlay to the bare minimun. Looking at either prysmatic Lipo or 18650s. (I have 12x unused LiPo cells already to hand! ) Requirements unchanged. Range of 6mile (Total runtime), No human...

Hi Woosh, Righto, so its me just being awkward and working backwards then. See, i'm not comuting, its nothing more than a project (Just because i can) that would have some light functional use. I did my fair share of commuting on a bike 20 odd years back when i left school. My knees would not...

In the process of ammending the list... This 1000w Bafang Mid Drive kit would be a better choice than the Mac motor, along with just crossing out the direct drive hub? I can't find any generic mid drive motors that dont appear to be low quality kids buggy 'toy' motors! Any suggestions on a...

Hi Woosh, Thanks for the link to that simulator tool, that cuts down on a lot of math, much obliged. :cool: Though it also raises further questions why you are so dead against sla batteries: Based on the Mac 8T hub (though initiallay looking at 10T) 48V sla with an increased 0.3 Ohm internal...

Thank you for that update, i was soo worried about those Somali pirates killing the crew and stealing the shipment of conversion kits.

Guaranteed to be here in 8-10 weeks, but mostly always within 3 months, i unless Somali pirates hijact the boat in which case you wont be told for a further 6 months!

Ps. not having a display, isnt that like forgetting to turn the fuel tap from reserve tank? I dont want bluetooth junk but a glorified petrol guage is good! isnt it also a basic interface for the controller soft settings?

Sorry, i should have worded that differently, my bad! "max intended flat surface speed doesn't exceed 28mph" I would however like to acheive a respectable cruising speed that wont make me a pain in the butt for motorists on country lanes! I was going by the winding/speed chart on one of the...

Hi guys, Just wanting a second, or third opinion please! Quick run down on its purpose: This isn't for a bicycle conversion and it will be used with No PAS, just throttle only. I will be re-lacing the motor into a 20" wheel. I intend running this using either VRLA Cyclic or VRLA high rate...

Yes what vfr400 about conditioning batteries... Ignore my ramblings! Been a long day and forgotten we are talking lithium batteries which are memory free!

Hi there, A couple of possibilities to consider before going the whole hog and build an entire new pack: 1. How often do you use the bikes and Cycle the batteries? (no pun intended :) ) Even though they are rechargeable if they are left for prolonged periods fully charged this shortens the...

Hi Nealh, Thanks for the link. Yea, sorry i don't think there are any electrical components that don't come from China these days. I should have probably said "questionable manufactures that over specify the controllers capacity in order to boost sales" opposed to questionable controllers...

Hi there, I have been tinkering around with a few different scratch built e-vehicles (bicycles, scooters etc). Until now they have only been prototypes and have been more than happy to use the somewhat questionable over-rated Chinese controllers and motors. I am now looking to build my final...

Hi Raboa, Very kind of you to offer. Afraid I'm in the North East (Blue Toon) though and the nature of my work makes it hard for me to get much further afield than dundee!

Darn it, only 12 bed springs! Back to the Council tip for some more! I'm sorted with the rest including 3 hoovers and 2 windscreen wiper motors and a pile of scrap steel box section (oh, and i already have 1x 20"BMX wheel) :) Thanks, hard to believe I've been tinkering around for the last 6...

Hi there, Coming to you live from Scotland!... Ok, so not really live, but you get the gist of it ;) Righto, so a little about me then? Hmm, I'll try and keep it brief, lol... Old school Cabinet Maker to trade, retrained as a Machinist/Fabricator I now work as a Maintenance Engineer in the...