60miles at 30mph - Possible?

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jk
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60miles at 30mph - Possible?

I'm really not familiar with Crystallite systems but was wondering if anyone can recommend a system that will take me 56 miles minimum at an average speed of 30mph?

Thanks in advance.

dogman
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Re: 60miles at 30mph - Possible?

Honda 125 scooter. Seriously, by the time you load up with enough lithium batteries, if you could afford it, you may be down to 20 mph. What you want to do is more like the capability of a good motorcycle conversion, but you won't get that far on most ordinary lead acid motorcylces. It will take big buck lithium. If you really want to do this on a bike, you will need a trailer or a trike to carry as much as 50 pounds of lithium batteries, like about 40-60 ah. Or at least a bike with a huge frame triangle. If it's a daily ride, that is about 3 hours in the saddle one way. Whew! I'd be looking at small gas motorcycles and scooters that get 50-70 mpg for this. And they will go 50 mph. Really small gas mopeds will fall apart on ya if you drive em that far. I used to put mine back together every 10 miles no matter how much locktite I used. Another issue if you live in a warm climate is , can a hub motor run for 2 1/2 to 3 hours without melting? Can the controller? I once added more gas tank to a motorcycle to find the original small tank was that sise for a real good reason.

Be the pack leader.
36 volt sla schwinn beach cruiser
36 volt lifepo4 mongoose mtb
24 volt sla + nicad EV Global

sgmdudley
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Re: 60miles at 30mph - Possible?

I have a Zapino. At 20mph, I can go 25-30 miles. You could get the range you want with a more expensive scooter.
See the EVC Volta.

Metro
8KW Motor
Torque: 133 Ft-Lbs
0-50MPH: 5.5 & 5.1 Sec.
Range: 75 Mi*
Starting at $7,995

http://www.evcusa.com/

Robert Dudley
E-Scoot Tech

dogman
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Re: 60miles at 30mph - Possible?

Or pack a huge battery on the zappino. Lotsa manufaturers claim range. My wilderness energy does 1/2 the claimed range. Most never give range at full throttle. I should have mentioned that a good electric scooter on better batteries could do it. They are made to carry that weight if they have 5 lead batteries. Bikes kinda balk at packing 50 extra pounds in addition to a 20 pound hub in my opinion. But again, does it fry on that long a ride? Something built with an etec and lots of lithium batteries would be good.

Be the pack leader.
36 volt sla schwinn beach cruiser
36 volt lifepo4 mongoose mtb
24 volt sla + nicad EV Global

andrew
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Re: 60miles at 30mph - Possible?

60 miles at 30 mph is possible with enough battery capacity. I'm running some calculations with this calculator and stock settings:
kreuzotter.de bicycle power calculator

If you select the top racing bicycle with the rest of the settings stock, and enter 30 mph, then the power requirement comes to 703 watts. Maybe you can provide 150 watts to power the bicycle continuously? That would be 553 watts provided it is flat terrain, and this doesn't account for any wind or start/stops which would probably increase this figure.

553 watts/30 mph = 18.43 whrs/mile * 56 miles = 1032.3 whrs. This is probably conservative for that speed. I would probably figure more like 25 whrs/mile if not more, and figure that the battery will probably provide about 90% of it's nominal energy (for lithium) which also gives more margin for error. That would require about a 1550 whr pack.

[url=/forum-topic/motorcycles-and-large-scooters/587-my-kz750-electric-motorcycle-project]KZ750 Motorcycle Conversion[/url]
[url=/forum-topic/motorcycles-and-large-scooters/588-fixing-my-chinese-scooter]900 watt scooter[/url]
Pic from http://www.electri

cerewa
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Re: 60miles at 30mph - Possible?

48v30Ah is almost 1500 wh, and will probably be enough for 60mi @ 30mph.

When Pingping ebay lithium iron phosphate packs come up for sale again, buy a couple of the 48v ones... 20ah+10ah...

it's affordable enough, if you're comparing to the price of, say, a Vespa or other nice gas scooter. way cheaper than a car.

schnelsr
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Re: 60miles at 30mph - Possible?

YESA
http://www.yesa.com.hk/product_pack.asp?lb=3&id=0
has a 48V 20 Ah pack. Two of those should get it. At 25 pounds each you would have to get one in the triangle and one on the rack. They quoted me $1100 plus shipping that came to $1300 but the shipping would be reduced on two packs.

Slow1
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Re: 60miles at 30mph - Possible?

I don't know if he does 30mph sustained, but he claims 24mph (40Km/hr) for a MUCH longer distance and a top speed of 45mph...

http://www.evalbum.com/1947

Then again, he's recycling batteries and building his cells himself - quite an impressive rig from what I can tell (then again, I'm still a noob here so everything seems impressive).

swbluto
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Re: 60miles at 30mph - Possible?

48v30Ah is almost 1500 wh, and will probably be enough for 60mi @ 30mph.

When Pingping ebay lithium iron phosphate packs come up for sale again, buy a couple of the 48v ones... 20ah+10ah...

If you're going to parallel them(Which is *heavily* advisable to reduce the stress on the cells. Make sure to parallel them using diodes to protect the packs.), then I'd suggest getting 15ah+15ah and just order from him directly. Or you could ask for a 30AH battery to see if he could make one. Mismatching the pack capacities effectively limits your per-battery-capacity to the smallest one which, in the 20ah+10ah case, would be 10ah+10ah or 20AH. Unless you disconnected it near the 10ah mark, you'd also risk damaging the BMS.

mcstar
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Re: 60miles at 30mph - Possible?

It's definately possible with at least a 30AH battery. I ride 14miles each way and use between 5.0-7.6AH for each trip. The variance comes from several factors.
1. How much air in my tires at 100psi I use much less than at 60psi.
2. Wind, makes a huge difference, it can add 1-2AH to the ride.
3. Direction (to work or from) going into work I use 1-2AH less than coming from. This is mostly becaue of a 200ft climb that uses a ton of current.
4. How hard I work of course.

richardb
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Re: 60miles at 30mph - Possible?

This past fall, I got my first electric scooter, and I found that the biggest obstacle to higher speeds is wind resistance. I would experiment with streamlining before adding battery capacity. I'm going to guess that if you can cut your drag in half, you could get by with a 20AH pack. I would start with a recumbent, and work on lowering the wind resistance with some sort of fairing.

Dickey_b
Waste Not, Want Not

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