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    Battery Testing Equipment Recommendations?

    Hi Richard, We already use a CA and record data manually be this requires someone to watch the thing and is very labour intensive. Hi Steve, Ray, my engineer has sorted that out, I'll pass on the details once we have tested. Hi disadvantage, thanks for the link, I will have a look at this...
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    Battery Testing Equipment Recommendations?

    Hi Doc, I've got the 'Big Load' covered and I will see the Labview rep next week. Can you recommend a ni daq card for the job, I'm having trouble as they all seem far too complicated for this application. Many thanks, Ian
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    Battery Testing Equipment Recommendations?

    Thanks guys, I'll pass these on to my engineer. My experience comes from using a Cycle Analyst and its only that basic information we need, but recorded on a PC. Labview and Cadex seem overkill, some simple V & A graphs to track voltage sag for a given rate of discharge and total Wh discharged...
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    Battery Testing Equipment Recommendations?

    Hi All, In the coming weeks I will be building some rather large LiFeBATT packs. 50S2P 150V 20Ah for a project which will be announced in February or March. We are designing a charger and a 'load' for testing but we want to record volts, amps, Wh's consumed etc, during the cycle testing. Is...
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    Question about BMC hub motor

    I had an email from Mark yesterday confirming that the new motor will only take a single speed. I think Knoxie found that torque between the 250 and 320rpm motors was very similar, the 320 just faster.
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    LifeBatt cells now available for ebike use

    Excellent news Bob, welcome to the team.
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    Shrink tubing?

    Before I bothered anyone here, I did spend several hours calling around, visiting Maplin, the UK equivalent of Radio Shack, I guess, and surfing the net. But nothing was as big nor as inexpensive. Even farnell.co.uk doesn't offer anything bigger than 114mm ! 492,706 products, my ARSE! Sorry...
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    Shrink tubing?

    Would you believe BatterySpace wanted $45 to ship 4 feet of their 238mm Heavy-Duty Thermal Shrink Wrap Tube ($3.99 per foot) to the UK! :shock: Does anybody know a supplier in the UK, or someone in the US who charges a reasonable fee for shipping? Thanks, Ian
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    I wish I'd built this!

    Hi All, Saw this on EV Album and immediately wished I'd gone this route :mrgreen: The rear dropouts look a bit weedy for an X5. http://www.austinev.org/evalbum/1437 It also needs a nice set of high bars 8) Ian
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    Where's the best place to buy batteries in the UK?

    Hi Matt, I have used Farnell.co.uk in the past. These look good, 1.2V NIMH D 7AH. 35A max current. http://uk.farnell.com/jsp/Electrical/Batteries,+Chargers+&+Holders/GP+BATTERIES/GP700DH1A1P/displayProduct.jsp?sku=1269675&_requestid=235240 They have larger but they get very expensive. When I...
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    The Killacycle & Scotty Pollacheck 7.82 @ 168 MPH 10nov2

    Hi Bill, It is indeed amazing that you participate here at Endless Sphere, we all share your desire to push the technology faster and faster. Also, I hope your now fully recovered from your little 'incident'. Another record has certainly restored any dignity you lost. Can I ask what are the...
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    New KMX video...

    Hi Jozzer, Great video's but I have to agree with Knoxie, get a lid. When I was 16, I told my Dad I wanted a motorcycle, that evening he returned from work (he was an insurance underwriter) with a briefcase full of gory photo's of motorcyclists various bloody parts, literally! Of course being...
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    LiFePo4 arrived

    That is an excellent solution to the battery storage problem, especially as it so easy to remove and carry indoors to your charging station, or if you need to leave the bike chained up in public. I can't remove my batt's without a spanner and 20 minutes. So, I have a hidden cut off switch and...
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    Thumb Throttle Arthritis - Wilderness Energy

    I too have arthritis, pretty much everywhere. I found the half throttle a lot easier. I dislocated my thumb about six months ago on a thumb throttle. But fortunatley, as the thumb doesn't have any cartilige, it poped back in straight away :oops: I am in the process, for the last six months...
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    Brushed motors?

    This is the cost / performace setup between my brushed / brushless setups; Brushed - Powerbyke geared hub motor and 36V 40Amp scooter controller, £105 and 15mph. 7mph up an 8% hill. Brushless - Puma geared hub motor and C'lyte 35Amp controller, £440 and 20mph. 14mph up an 8% hill...
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    ChopSuey's Black Chopper

    Hi ChopSuey, Nice forks ! but unfortunately, together with weight distribution, they are the cause of your bounce. If you look a the yokes from the side you will see that the forks and the steering tube run parallel. This creates a lot of trail. This page will help explain and includes a...
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    Chopper !

    Yo Y, Looking good 8) A nice set of ape bars and you are crusieing 8) http://www.streetlowrider.com/store/product_info.php/cPath/25_52/products_id/215 Ian
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    ChopperMan's MKII

    We are experimenting with 40mm stainless steel, to run a single horazontal support top and bottom, rather than the triangulated four tube arangment that is more like a motorcycle frame. The four bar is easier to build but no god for adding peddles. 25mm SS for the rear frame. Don't know the...
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    Fatal Flaw in Chinese LiFePO4 chargers

    Just had a look at the VoltPeak chargers. I will need 24 chargers and they will take 10 hours to do the 72V 20Ah pack. And at $230 plus shipping to the UK, not really a viable option :(
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    Fatal Flaw in Chinese LiFePO4 chargers

    Gary, This is exactly my plan for the charger. And I hope to use your LVC design in conjunction with this type of charger for the time being. Ian
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    Fatal Flaw in Chinese LiFePO4 chargers

    Hi Guys, Yes they are sh*te. I have two sitting on my bench for the last two weeks. I am fortunate to have an electronics design engineer for a farther-in-law, Ray, and his opinion was "that's the sort of thing we would have done in the 70's!". One was rattling when it arrived and I haven't...
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    ChopperMan's MKII

    Hi D, Yeah I am really pleased with the shape, but it fells like a real heavy weight. I have a small rear mud guard (fender) to go on the back and I am going to fit the same tyre as I have on the back, to the front. Just need to fit a wider rim too. The enclosure is big enough to fit 72V 20Ah...
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    ChopperMan's MKII

    Hi All, Here is a pic of the frame with the enclosure sitting about 4 inches to far forward. Brakes comming this weekend.... then some testing :twisted: Cheers, Ian
  24. C

    ChopperMan's MKII

    Hi Malcolm, I have two options, a legal 200W ebike version with peddles and 36V10Ah. Or a registered moped version Puma 48V 30Ah. Early stages yet, but things are moving fast !!! Ian
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    ChopperMan's MKII

    Hi Malcolm, We have used 25mm, 1.2mm wall mild steel tube. Heavy, but easy to fabricate. The idea is that once the shape/design is finalised, it will then go on a diet. Maybe stainless steel or possibly aluminium, or just 25mm 0.8mm mild steel. 25mm is a cheap size to fabricate as the engineers...
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