EV Global Motor Question

[ort5]

Hello all,

I just bought a used EV Global bike locally. It's the 36V LE model from 2002. The battery is dead (of course), but it lasted long enough for me to get a 1/4 mile or so to ensure that everything else was working OK.

I'm not positive that I'll keep it, but it was a good deal and I thought why not.

My question is with the motor. I know it's a Heinzmann, brushed motor rated for 36V. Does anybody know any details on it? Is it geared? What is the RPM per volt? The model number is Heinzmann 870-00-215-20 but I can't find anything about it on the internet.

I may just steal that motor and put it on my other bike which I originally wanted to electrify.

 

[RB Cats]

The motor is rated at 500 watts for 36 volts and it is a geared motor. You can tell if it is a geared motor when rolling the bike backwards the drag should increase.

Hope that helps.

RB Cats

 

[Dr. Shock]

Welcome. Here's a couple of Heinzman related sites:

http://www.electricbikes.us
http://www.kinetics.org.uk/html/heinzmann_kits.shtml

 

[Ian]

The 36V 500W:
-catalog # 870-00-265-2030. look for 870-00-865-2030 on the website it looks the same specs:
-rated at 24.5 degree slope
-max current rating of 60 amps.
-84Nm at 800W peak, 500W continuous 20 mins. I'd say this was probably on the conservative side based on what I get away with on my 24v.
- all metal gears.
http://www.estelle.de/e/motoren.asp

 

[Ian]

you can easy run this motor at 48v too

 

[tno]

have you ever had overheating problems with this motor at 48v?
I notice it gets pretty hot when run continuously for several miles.

 

[ort5]

Awesome, thanks guys!

Yeah, I figured it was geared when I tried to roll it backwards and it had lots of drag. I think this motor might have some nice potential then

I guess now the question is if I should keep it in the EVG frame, or swap it out? I'll be upping the voltage to 48V and using a Crystalite controller regardless. You can't beat the ability of the EVG frame to store the batteries in a nice place, but I honestly don't love the way it looks. It's also got some low end components on it.

I scored the bike for $225, so I feel the motor was worth that alone anyway.

Any thoughts?

 

[ort5]

Oh, another question.

I believe at 36V, this motor does around 17mph. So it would then be reasonable to say that the speed would increase (48/36) * 17mph = 22.6mph?

Any idea of what kind of current the motor would draw at 48V? I need to find the right battery. My commute is around 13 miles round trip.

Thanks.

 

[deardancer3]

Oh, another question.

I believe at 36V, this motor does around 17mph. So it would then be reasonable to say that the speed would increase (48/36) * 17mph = 22.6mph?

Any idea of what kind of current the motor would draw at 48V? I need to find the right battery. My commute is around 13 miles round trip.

Thanks.

http://www.kreuzotter.de/english/espeed.htm

you need @ 375w to go this speed. If you are fortunate enough to operate at 75% on a brushed system at this speed, that means about 500w from the pack. if your legs supply say 75 w, thats 425w from the pack at 50 volts, so about 8.5 amps or there abouts, flat, no head winds.

Change tires to Nice wide city HP slicks and power needs go down some.

but stay legal on the top speed, or close too it.

just my opinions.

d

 

[lazarus2405]

but stay legal on the top speed, or close too it.

Psh, forget that. Make your top speed whatever you want, and when on public roads and paths maintain a legal speed. Ride responsibly, but enjoy the power you have when you can.

 

[tno]

Oh, another question.

I believe at 36V, this motor does around 17mph. So it would then be reasonable to say that the speed would increase (48/36) * 17mph = 22.6mph?

Any idea of what kind of current the motor would draw at 48V? I need to find the right battery. My commute is around 13 miles round trip.

Thanks.

at 48v and with the evg frame and tires, the bike will speed up to around 18-19mph. then slowly go to 22mph. I assume the amp draw is limited by your controller. the motor is rated for max 60amp so try not to go beyond that.

 

[Ian]

My 24v evg running at 46v has atop speed of about 22/23 mph on the flat, no wind and light pedaling.
with moderate pedaling drawing 500 to 600 watts continuous keeps me from 15mph to 18 mph against strong headwind and/or up long steep gradients, but overheating will soon occur; 300 to 400 watts keeps me around 13 to 15mph in same conditions, or in the high teens on the level with no wind or with the wind and no overheating, which is an excellent alternative to meltdown any day of the week.
the motor seems to be ok with peak watts of 900 or so but just momentary.

do the riders who aren't spring chickens not realize they can easily electrify a bike these days you have just as much fun and satisfaction if not more, far less misery on the uphills, and maybe keep riding for years longer than you might have done and go distances and places on a bike you never would have previously.

anyway where was I oh yes. re the look of these evg bike. with rear rack and panniers, front handlebar bag, afront and rear wheel guards, it looks a clunker all right. Get rid of all that, and you'll find its not half bad looking. if I met iacocca I'd say get these frame designs back in production with the proper batteries and brushless gear hub , c'mon man it couold be the optibikes way cheaper alternative !!!