A few weeks ago I contacted Eagle Tree (Data logger) and told them I needed two rpm sensor inputs that could be calibrated seperately. One for motor Rpm and...
Here are some comments from a west coast friend. ... outrunner is not using hall effect sensors but uses the unpowered windings' magnetic induced voltage spike...
... with ... talk ... RC ... the ... the ... frequency ... upon ... In most vehicle applications the motor has to operate over a considerable range of speed...
I finally got the parts assembled for my 2-stage belt drive. After rethinking the design several times I settled on 17/80 primary stage with a 6mm wide 3mm...
... ......Hey great. I will be looking forward to see what your set up looks likes and performs. I'm glad your using the belt drives so we can make some...
I installed the motor/gearbox Friday and took a test ride. I got about a mile down the road when the chain derailed and I couldn't clear it so walked it home....
Elden, Better luck on your next test ride with the improved chain guides. I'm looking forward to hearing more about your on road experience and perhaps even a...
... ......hey congradulations for getting the first ride. And the chain problem is typical of first time out adventures. Got any photos? ... ....Yup. John Tetz...
... While the system is working, the feeling is quite exhilarating so i am ... ......I have forgoten what your system is all about. How about an up date ?...
... I posted a report in the Files section as "Belt drive construction for Agio" with a couple photos. I'd wanted to do more bench testing before mounting but...
I am working with an off the shelf 180W motor from Cyclone ( http://www.cyclone-tw.com/newkits.htm). It comes with a 9.33:1 planetary gearbox. The motor +...
... planetary ... pretty ... ..........Thats not so bad. When I spotted a Cyclone system a couple years ago and noted they were pullng onthe chain coming off...
... couple ... easily ... I've had another problem with something in the system. When I brought my pedal up the prepare to start it got stiff. After another...
... brought ... was ... I found the source of the intermittent drag. This time when it happened I couldn't see anything in the belts, but then I noticed that ...
... that ... moved ... connected ... ......I'm not sure I understand. Are you saying the leads were shorting out? That would of course cause a lot of drag from...
... I ... shorting ... real ... Yes, the leads were shorting by contacting the aluminum sideplate. Shorted motor leads really puts a load on it. I have the...
I have two NiMh battery packs. I have been using only one for the last few months. The other had some use then sat idle. I got it out and ran it and was...
I have a battery question. I have seen many cases during my tests that one or more cells drop to zero output voltage then going into negative charge if the...
... to ... value ... cells ... each ... is ... I would think that it is unlikely a cell with be damaged by its mate. The A123 cells should be safe down to...
I was informed Sunday that may battery should arrive this week, so it is time to get everything ready to operate. Although the last details will depend...
... I was able to test the motor with no-load operating ... with ... 80%. ... driving ... .......I would try to seperate out the motor from the drive train. ...
... road ... drive ... How ... I wanted the peak efficiency to be when power is near 100W. Since it drops off quickly at speeds above the peak, I was planning...
... it ... ....My understanding is the efficiency drops really quickly below the optimum power and much slower above the optimum power. If I'd chosen a motor...
... Since ... about ... the ... Higher speed corresponds to lower power. ... was ... I've been searching for someone locally that can reweld them, but no luck...
The NE HPV rally will be at the Burlington Bikefest this year, Oct. 4&5, this year. The website is www.hpvburlingtonbikefest.org. I plan to be there and hope...
... ....Yes the spreadsheets will help determine CdA and Crr butit really requires a datalogger on the vehicle and very careful attnetion to details. I feel we...
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