Electric motorcycles, and large scooters

Acknowledging that pre real-world drive estimates are just that, I'd be interested in thoughts about the following:

2 different motor/batt combinations under consideration.

1) 6 kw motor with 16 40 aH LiFePo Batts. 48 volts, ~1.9 kw batt pack capacity.
2) 3 kw motor with 5 50 aH SLA Batts. 60 volts, ~3.0 kw batt pack capacity.

Actual daily commute challenge: 17 miles @ 35 mph avg, with 900 feet elevation drop. 4.5 hours down (charge) time.
Return - 17 @ 35 'uphill'. 4 hours down (charge) time.
17 miles @ 35 'downhill'. 3.5 hours down (charge) time.
Return. 10 hours charge time available.

Questions:

Assuming that the SLA scooter will weigh more, over the same route, which is likely to have better range? By how much?

Which would handle 2 charge cycles per day, 5 days a week, better?

How does the motor kw rating relate to efficiency, draw-down pattern, etc, with the two battery chemistries?

Hi Electric Scooter Community,

I look forward to participating in this forum. After reading many of the threads on X-Treme scooters, I finally bought a 5000. Now it appears I am experincing 2 common issues:

1) Registration in the state of Califoria as a street legal vehical.
I'm seeking guidance from anyone who has successfully navigated through the certifications.

2) My battery gauge does not seem to work. It registers fully charged all of the time, even when there is amost no charge left and the scooter will only do 10 MPH.
Can anyone confirm that their XM-5000 battery gauge actually reads anything other than full charge? I
understand that it is not an accurate meter, but I assumed it would at least move.

Thank in advance for your responses to this.
Darryl

Hey, all--thanks for a great forum.

I just acquired an engine-less '78 Vespa Bravo and am brain-storming an electric conversion.

Knowing next to nothing about electric systems, I'll try not to bog down the forum with questions I can research myself, but I do have one that I think some of you could answer quite easily:

For those familiar with this moped, I'm considering converting it to a hard-tail so I can mount the motor behind the seat on the frame above the rear wheel. Those hub motors are cool, but I'm going cheap--this is a for fun learning project--and this way I can leave the rear brake intact. This also opens up room for large cheap batteries underneath my feet where the original engine was. I'm a carpenter/fabricator and can handle the structural stuff myself, but I'm going to have to do a lot of research when it comes to the control and drive system.

Anyway, this moped came with a gear reduction unit attached to the rear hub. It already has a pulley on it, and a round thingy (was that the clutch, or a flywheel or what?) that I think will go away leaving lots of room for pulley options. My question is whether I should use the gear reduction.

By my calculations, I would need to input 5500 rpm at this gear box to achieve 30 mph at the wheel, which is my goal. I have been told that with most of the popular motors, little to no reduction would be needed (?) but I am wondering if by using this 11:1 reduction I might open up some compelling motor options. For instance, by having this reduction, would I be able to go lower voltage? (I'd like to go cheap on the batteries!) Would I be able to use a cheaper motor, or would the reduction allow me to get greater acceleration with less wear and tear on my motor?

I have read that a safe estimate in moped conversion world is that 1000 watts will get you (barely) 30mph, so this is my rough plan so far.

So what's the verdict? Use the reduction, or not, and why, please. I truly appreciate any input.

Last week I got to interview the current CEO of Mission Motors, Jit Bhattacharya. Over the last month a story has been emerging that Mission was in conversation with Chinese motorcycle maker on some kind of joint venture. I've done three articles about it.

Expect sometime in the future that Zongshen will be making electric motorcycles using a mission motors designed drive train. What's not clear is whether these Zongshen bikes would be for export or only for the Chinese domestic market.

Mission Motors plans to make a modest cost sport bike where "modest" might still seem pricey but less so than the Mission One. Expect them to announce details later this year.

More insights on the odd-couple pairing of Mission Motors and Zongshen

Zongshen, Warren Buffett, Mission Motors and BYD

Electric supermotorcycle maker Mission Motors pondering a deal with Chinese motorcycle company

If the Admin approves, perhaps we could put together a survey of owners and get some ratings of the various brands and models. Anyone interested?

I read of this complaint in many posts on many sites.
Please try mitts instead of gloves. Bush bike hand protectors also reduce the cooling from windchill.

Not quite to 100 miles since new and the throttle control is flopping. I can't see any set screw and I can't get the end cap off without the probability of destroying the control? What normally holds the control tight to the handlebar? Is it normally tight to the light switch or is there a 3/4" gap?
Any and all ideas welcome.
Thanks:
Reid

I am taking a 48v 750w scooter hub motor and putting it onto a bike. I need to spoke a new wheel with this large hub motor and I'm not sure where to start. I just got the electric scooter for 100$ and now I have a hobby. I have no license but can get around that by strapping this motor to a wheel. I will have pictures available shortly during the whole process for all of you fans of building soon but thats after I figure out the flange sizing I have to drill to spoke out the wheel. Any talk and advice will be helpful. My grandfather's sprint car garage will be whre most of the fabricating will take place at so....

Hi, I have been into scoots for awhile now and need a little help with wiring direct my lights and horn to a 12v 7ah battery I have fried 2 converters and I have a 60v battery system. One converter worked ok from EVParts until I added the other battery, just wasn't thinking 13.8v was only thinking 12v x 5=60. Then ordered a so called 72v converter from Thunderstruck and when I pulled the sticker back it had read the same as the 1st one I fried 30-60, but was lasered printed w/ 72v?; called and asked about it and was told don't worry it will work. I said if it fries I want my money back, he said yea no prob. I had it at a automotive electrician they hooked up and it fried...My delemia is I am out of work and can't afford any more burning of money I don't have and can't afford the $90.00 for a real 72v converter! I don't know what scooter I have it's not named! The wires going into the converter from the scooter are 1 red, 1 black and one green w/red strip. Then the converter was wired w/ 1 red, 1 black and one yellow. So here is my question: what the hell is the green w/ red stripe for? (My guess is the horn). Can someone please help me and tell me just how to wire this setup; (toggle + lights and horn to 12v 7ah battery) up correctly without fring anything else?
I would appreciate any help you can offer me here please!
Thanks a lot,
Steven