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Richard230 clicked Likes for this post: Electric Harley? by Stevo

2 Days Ago

Stevo replied to the thread Electric Harley?.
" Maybe Mattel or Hasbro will buy Harley-Davidson when they go bankrupt... because those toys look fun! LOL "

3 Days Ago

Warren replied to the thread Electric Harley?.
" My favorite electric Harley, so far. Affordable too.

https://www.harley-davidson.com/us/e...nce-bikes.html

Harley's amazing marketing. They ran these at the X-Games, with no mention of the LiveWire. The commentators at the end of the race say, "Those things look super fun." "I want one. Like, an adult sized one." "

4 Days Ago

frodus replied to the thread Bike components check.
" 72V ought to give you higher speed. I'd probably recommend at least 72V. "

6 Days Ago

anonjihen replied to the thread Bike components check.
"
Quote Originally Posted by Stevo View Post
Your goal of a 150lb bike with a 55mph top speed and range of 50 miles is a bit optimistic with 4 Pb acid batteries. I'm guessing the batts will weigh in at around 20 lbs each... thats 80lbs just for battery weight.... and you will be disappointed with the power output of those batts as well. Not to mention that you already are working with a pretty small bike chassis.
But don't be discouraged....building your own electric scoot is a big endeavor with lots of lessons to learn. I would just steer you away from lead acid batteries as a waste of time and money. My first attempt of building an emc 9 years ago used Pb acid batteries and although it worked, it was very heavy and very underpowered.
Definitely keep your eyes open for a good deal on Nissan Leaf cells... its your best and most affordable option
Thanks for the advice. Do you know of any places or kinds of places should be looking for Nissan Leaf cells, other than the forums?

Quote Originally Posted by frodus View Post
I think that you should get a paired motor/controller combo rather than try to get individual parts like that and doing it yourself. I don't know of any file that exists for the 1305 motor for the Sevcon at the moment, so unless you have a dyno and experience tuning Sevcon, you're going to have a lot of trouble. You'll spend more time getting it working than putting the vehicle together.

Look around on the forums for some used motors/controllers if this is a first build. See how you like it, then you can decide if you want to upgrade, and pass along the motor/controller to someone else.
That's probably a better idea, I'll keep a lookout. I'm not in any hurry to build this, and it's mostly for learning purposes anyway.



Am I at least looking into the right type of motor in terms of power at least? 7kw/100amps, 48v, 5000rpm minimum? Would it be more advantageous to look into 72volts over 48v? "

6 Days Ago

frodus replied to the thread Bike components check.
" I think that you should get a paired motor/controller combo rather than try to get individual parts like that and doing it yourself. I don't know of any file that exists for the 1305 motor for the Sevcon at the moment, so unless you have a dyno and experience tuning Sevcon, you're going to have a lot of trouble. You'll spend more time getting it working than putting the vehicle together.

Look around on the forums for some used motors/controllers if this is a first build. See how you like it, then you can decide if you want to upgrade, and pass along the motor/controller to someone else. "

6 Days Ago

frodus replied to the thread Lifep04 or LTO.
" They're made for an EV, so it's going to be something like 2-3000 cycles 100% which would give you about 80% capacity at that point.

There's lots of data out there, just got to search for some sites,
like Hybrid Auto Center: https://www.hybridautocenter.com/HAC...ule&Itemid=605 "

6 Days Ago

Stevo clicked Likes for this post: H2 vs electrical power by Richard230

6 Days Ago

mindowgas replied to the thread Help choosing a motor.
" Hey, I have a brand new Emrax 228 Medium Voltage combined cooling, here is some reference motor info: https://emrax.com/products/emrax-228/
I bought it for my electric project but never got to use it. If interested the price is $4500.
I also have the Bamocar motor controller that is suitable for this motor the price for controller is $5500.

The motor is capable of delivering 100kW peak power and 230Nm peak torque, and it weighs only 12.3 kg. "

6 Days Ago

Stevo replied to the thread Bike components check.
" Your goal of a 150lb bike with a 55mph top speed and range of 50 miles is a bit optimistic with 4 Pb acid batteries. I'm guessing the batts will weigh in at around 20 lbs each... thats 80lbs just for battery weight.... and you will be disappointed with the power output of those batts as well. Not to mention that you already are working with a pretty small bike chassis.
But don't be discouraged....building your own electric scoot is a big endeavor with lots of lessons to learn. I would just steer you away from lead acid batteries as a waste of time and money. My first attempt of building an emc 9 years ago used Pb acid batteries and although it worked, it was very heavy and very underpowered.
Definitely keep your eyes open for a good deal on Nissan Leaf cells... its your best and most affordable option "

6 Days Ago

Richard230 created the thread Battery tech discussion video.
" This is a very informative video discussing lithium battery technology, its problems, why batteries degrade, how their manufacturing can be improved in the future and then discusses the advantages and disadvantages of "ultra capacitors":
https://www.youtube.com/watch?v=DE_PZQ13YTY: "

6 Days Ago

Richard230 created the thread H2 vs electrical power.
" This is an interesting video discussing the economic and efficiency merits of both H2 and electrical powered vehicles: https://www.youtube.com/watch?v=f7MzFfuNOtY "

6 Days Ago

anonjihen created the thread Bike components check.
" Hey everyone. I've been reading up here and on other sites for a couple of months now and I was hoping to get some feedback on my potential build and to make sure I understand correctly everything I've learned (lol). Thank you in advance to anyone that reads this.

The original bike is a 1981 Honda NC50. When it was alive it had a 50cc motor and a top speed of about 30 mph, I was originally going to bump up the engine to 70cc and replace several parts on it but decided to just convert to electric instead. If this goes alright, I plan to buy a standard motorcycle later and convert it to electric too.

My goal is to get the bike up to 55 mph and a minimum range of 30 or 40 miles. I'm guessing with everything on it, the bike will be 100-150lbs, rider weight of 150-200lb. The back wheel, with tire, is 18.5".

EV parts:
Motor: Motenergy ME-1305 BLDC 24-48v, 100 amps continuous, 5000 rpm ( https://www.evdrives.com/ProductDeta...E1305&CartID=1 )

15-tooth motor sprocket

Motor Controller: Sevcon G4827 ( https://www.thunderstruck-ev.com/sevcon-g4827.html )

Rear Wheel Sprocket: 32 teeth

Contactor: Tyco LEV200 ( https://www.thunderstruck-ev.com/tyco-lev200.html )

Throttle: Magura Twist Grip ( https://www.evdrives.com/product_p/thr-magura-assy.htm )

Batteries: 4* 12v 26Ah sealed lead acid batteries ( https://www.remybattery.com/ps-12260-sla-battery.html )

Main Fuse ( https://www.evdrives.com/product_p/fs-ann250.htm )

Pre-Charge Resistor ( https://www.evdrives.com/category_s/1947.htm )

Charger: tbd

Spedometer/display: tbd

So I guess my main question is: Does this combination of parts look correct to achieve my goal? Am I forgetting anything? Are there better places to buy motors and parts for cheaper? I know I could buy a cheaper brushed motor but I'd rather have brushless so I'm fine with the increase in price for that.

Additionally, what kind of charger should I get for this? Any suggestions?

Does anyone have any strong opinions on the Motenergy ME-1305 vs other motors? I was also considering the Mars 0907 BLDC ( https://www.cloudelectric.com/produc...-mars-0907.htm ) which might allow for a cheaper controller, but everyone I've read suggests a Kelly for it but that those are also apparently very unreliable - but all of that was also from 5+ years ago. Is this still true? Should I look into that instead? Or is there another compatible controller for the Mars 0907?

I'll be fabricating my own mounts and bodywork to protect the components, etc.

Thanks! Sorry if this sounds ridiculous - I'm still learning. "

6 Days Ago

Zero_Phobia replied to the thread Lifep04 or LTO.
" Perfect, I'll see if I can order some, thanks dude. Any idea what the cycles on them are? "

1 Week Ago

frodus replied to the thread Lifep04 or LTO.
" I don't know in South Africa though, but we get them at Hybrid Auto Specialists here in the states. Either gen1 or 2 is fine. "

1 Week Ago

Zero_Phobia replied to the thread Lifep04 or LTO.
" Thanks Travis, is there a good source you can reccomend and is the Gen1 batteries ok or must I go for gen2? "

1 Week Ago

Richard230 created the thread The original EV.
" This is a fun video: The way it used to be. This Jay Leno video takes a little time to get into its subject matter: https://www.youtube.com/watch?v=OhnjMdzGusc "

1 Week Ago

frodus replied to the thread Lifep04 or LTO.
" Get some Leaf batteries and go have some fun. They're easy to wire up, and fairly known as far as charging and voltage high/low limits and current ability. If they were around when I converted my eVFR, that's what I'd have gone with. "

1 Week Ago

Zero_Phobia replied to the thread 18650 Motorcycle - Current question.
" Thank you!! "

1 Week Ago

tylerwatts clicked Likes for this post: Soyachips’ Electric FZR250 by soyachips

1 Week Ago