Need a bit of an assist on little project im wanting to kick off. I want to Build an Electric MotorCylce but dont know what size Motor I would need or the controller etc. From what id read online i know Id need a DC Brushless motor. with a Controller for it. Id like to Achieve atleast 100Mph/160Kmph with some decent acceleration. Id commute roughly 60Km to work and then 60Km back. both place i can charge up. I can Fabricate my own Brackets and mountings.I have Electrical experience, So i can wire up all the component.. I am just not sure of what sort of Rating I would need to go for. In terms of DC Motor Size, DC Motor Conroller Size. How much and what type of batteries i would need to go for.
Picture related as i have the same Bike for the Conversion Please help Guys/Gals
Also, why it has a gas tank? Do you need gas for something?
Austin Walker
Why would you come to Sup Forums for this, or even to Sup Forums in general? There must be dozens of focused sites with people who live for this shit
Jonathan Robinson
Gas tank literally only serves as a filler of sorts. the bottom of the tank has been cut away. its meant just for Body position and leg placement. when cornering its alot nicer to press your one knee against the side of the tank. also could place things inside the cavity. like the DC Motor Controller.
Lincoln Clark
Technically it is a DC Motor so its still a Motor Cycle.
Charles Rivera
I know there are some people here who may be inclined to this sort of thing on here. Ive come here for some years now and understand well enough that i could also see this thing turn out to be a complet flop. but i guess i have faith or hope that i could get what i need from here. there are a number of sites i have visited. But they arent really Giving the Information im really looking for.
Xavier Green
find an abandoned electric car and take one of the motors, if it still works. Cheapest way to do it, just go to the junkyard and see if you can find something
Luis Russell
Arent the motors from those rather combersom? Id imagine i wouldnt need a motor of that size..
Michael Wood
bump?
Matthew Diaz
please help
Jose Taylor
You're going to electrocute yourself to death or retardation and I'm inclined to encourage you until you get hurt. What do you expect the final weight will be?
Carter Scott
Go to an e-bike forum or at least go to /diy just pls dont ask advice on engineering on /b you'll end up making mustard gas
Thomas Foster
its not impossible to do. but i doubt i would get electricute. much more likely id fry the bike and cause a fire before that. i weigh roughly 90Kgs. the bike ... not sure to be honest. 90 to maybe 110 depending on batteries.
Dylan James
Spose thats good advice. lol id like to believe id see a trick like that coming though. ive seen some really hectic stuff here and some really Gulible people.
Jaxon Lee
You're going to electrocute yourself just wiring it up, never mind turning it on. I recommend around a 3000w motor with a pwm controller. Do you have any parts yet? If so list them and their specs
Xavier Allen
Actually make that a 25kw motor, if you want to go really fast
Alexander Murphy
72v parallel of however many cells is most optimal, type of battery and budget is biggest hurdle. gonna need atleast 10kW/hr of whatever you can scrap together to get 60km
its a bit hard to imagine... i work at this PV plant where our inverters take in 500V-900V DC. i regularly work with electricity and having to wire stuff up isnt a problem for me. I do understand this a little different though.. Well im looking Forward to this project. Do the Passive cooling Brushless motors Cut it? i really dont want to burn one out...
At the moment i have the SV650 rolling chassis. ive gutted it. have all the fairings and stuff. hollowed out the tank. and its just waiting now.
i have a bunch of DC Cablling from some Genset installations.Fuse holders. hmm... thats actually about it... id been wanting to do this for a while but decided to finally actually begin
Jacob Rogers
Make an magnetic generator thatll fit and put out enough juice to power the 12v brushless...
Juan Rivera
lunacycle.com/ check that place out for ideas but i say go with a 6000 watt hub motor but go with a bigger spoke size you will need to custom build the wheel
Zachary Flores
>Do the Passive cooling Brushless motors Cut it? Probably not unless the motor specifies it can handle it. You're going to need to shunt 3-25kw of heat away from the motor. What's your battery situation like?
>25kw DC motor (remove parentheses) www(.)mrosupply(.)com/motors/ac-motors/general-purpose-motors/2268412_u773_marathon-electric
Juan Lopez
Fuck, that link is to an ac motor. Give me a minute
Alexander Edwards
I had a light fear of that... but hey i still have the rad from the bike so that can come in handy haha. as far as the Motor Size goes. its goign to be fun locating one here where im based Hey thanks for the link on that . will give it a look.
Charles Rodriguez
What he said. Your battery situation is the more pressing one.
What's your budget for this thing looking like? Good BLDC motor/controller pairings usually start around $2k, and your batteries can run pretty similar. I also think the SV frame is kinda shit for a custom conversion as it's got that really high up welded aluminum frame: one of the older Hondas with a steel tube box frame would be way easier to work with.
Carson Parker
Thanks for the link. Im a little Nervous abouyt that setup in regards to having the custom wheel built up. If i was Going for a DC Brushless motor i could atleast fabricate and install it myself with little hassle
Jordan Walker
>6kw
Brevshnich, this is a motorcycle, not an ebike. He's gonna need 20kw minimum to have a good time.
Jack Butler
Batteries i didnt really get anything as of yet. I didnt want to Jump the gun and buy stuff. find out i just screwd the build if i did buy bad batteries.
the Budget for the Build is like 8K. The whole reason why im going for this is literally so i no longer have to pay for fuel. i get free power where i live now and i get free power where i work. why the heck not sort of thing. i got given it from a bud whos motor ran bearings (Common issue apparently on the SV650?) i also have both Tube steel and L steel laying around at work. which i asked if i could have at it. so they are fine doing it.
Isaac King
If you're 100% sure you want brushless, Mars offers an all-in-one setup that ain't too bad. But it also ain't too cheap
Otherwise, if you're on a budget, I'd see about picking up a secondhand Lynch/Etek/Motenergy motors (brushed DC) and an old electric forklift controller (like a Curtis or a Kelly).These setups will get you between 15 and 30kw; any more power and you're going to have to go very custom.
In general, More Volts More Better. Lithium chemistries can be dangerous, but you're not going to get enough capacity out of lead acid to do your 60kms. Read up on this website:
rogershobbycenter com/lipoguide/
Evan Bennett
I'm not having any luck finding you appropriately sized DC equipment, and the AC equipment I'm finding wouldn't work well for a motorcycle, so I'm going to stop helping.
You could make it work with AC if you use an inverter and a different kind of speed controller. Hell, you could make a crude AC speed controller by building a transformer that lowers the inner coil into the outer coil to increase the voltage up to the max rating.
Also keep in mind that you're going to need some crazy battery storage. Probably 10kw*hr for 30minute rides and maybe 60kw*hr for 2-3 hours
Luke Lee
It's not much of a project if we're doing all the research for you.
Just pick one and test it out and see what happens. If it isn't good enough get a different motor.
Im on it 100%, mainly since i wont have to worry about brushes or contacts getting messed up. Id ready about many saying brushless is the way to go.
thats an interesting sort of idea...Thanks for the info. its really rather help full.
Yeah Lithium is both costly and somewhat Dangerous. but the Gains are far worth it. would i have to worry about temperatures during charging? Ill give it a ready now.
Michael Carter
Thanks though for the assistance. hey you know any and all information given is helpfull. Its possible that would work. rigging a sort of tap changer for varying voltage control. could work....
thats alot of power to try log around... lol makes things interesting.
Jordan Rogers
i have been digging before . though the information id been coming up with wasnt particularly helpfull. i also get where you are coming from.. in a sense how it should work is begin project with whatever gained knowledge. attempt and then improve there off. if it fails theres lessons there for the next.
main reason behind this is for more information. less likely to make really bad mistakes.(still can happen. lesslikely.)
Caleb Ross
With any kind of charging you're going to have a bigger issue than just temperature; you're going to need some kind of battery management system (BMS) to regulate the incoming AC voltage and turn it into constant current/voltage DC. What's your outlet situation looking like at home and at work? 240VAC, 60hz?
The terminology here gets screwy and you need to sort of ignore the differences in AC and DC and more focus on the motor construction. A lot of the stuff you've been posting are industrial induction motors; for OP's application, he's really looking for hobby or EV permanent magnet motors. Some of the brushless PM motors do run on technically 3 phase AC wave forms, but it's a variable frequency one generated in the controller, which requires a DC input. Speed is modulated with those brushless motors via variable frequency, not usually via variable voltage.
You're dead right on the capacity though. For ref, my 10kw gokart has about 2kw*hr and lasts 30 minutes to an hour with a top speed of 75kmph
Easton Walker
160km top speed / 120k Round trip
Those are some pretty crazy goals user, 160kmph is the top speed of a geared up (13/52 to 15/48) CRF450X super moto, and 120km is about the range of a tank.
No problem. Honestly with how expensive batteries are you might just want to put that 8k as a down payment on a Tesla and consider the monthly payment as your "gas"
Parker Morris
Actually yeah, OP, check out Alta or Zero motorcycles. They're only a few thousand more than your 8k budget and did all the hard work for you.They're styled to look like the CRF and match it in specs.
Adam Green
>focus on the motor construction That makes sense because pulsed DC is basically just shitty AC. I only posted the one link though.
Elijah Barnes
at home i have available. 240VAC 50Hz 20Amps single phase. and work i have 240VAC 50Hz 60Amps Per phase so power is available...
Im not planning on running 100Mph/16oKmph all the time. just for passing circumstances.
Xavier Gutierrez
The Zero FXS supermoto topped out with the 7.2 kWh hot swappable battery set up is about $10k USD. And the 3.6 set up is about $8k but it doesn't come close to the range you need. The Alta Redshift Supermoto starts at $13k USD. None of them will hit the top speed and have the range you want.
Carson Phillips
He only needs 60km range, not the full 120. Charging at either location.
Gabriel Jackson
And the Zero DSR with the 14kWh battery and power pack will hit the speed and range you're looking for but that's closer to $14-15k USD.
Juan Lewis
This is OP, Thanks everyone for the advice and the information you had all given. im going to give this a thought over then atleast get some sort of basic figures sorted out. build from there pretty much.
have all been very helpfull. Thanks again
Luke Garcia
Check out the endless sphere forums, they're a lot more suited to this sort of stuff than Sup Forums
Dominic Mitchell
Get the biggest electric motor you can get because fucking awesome.
Wyatt Miller
u could use a VSD, that can simulate AC
Samuel Scott
It's really hard to fabricate an electric motorcycle capable of 100mph without some form of gears / gearbox. The amount of torque required to move from a stand still with a single gear would snap a normal chain.Start with something with a lower top speed like 50ish mph.
Jace Sanchez
cause its random, not "a bunch of cod players share normie porn"
