What’s the best way to go about doing this? Any good resources, builds, guides, videos, etc.?
I want to build my own high performance electric motorcycle
Falling into your wing while paragliding is called 'gift wrapping' and turns you into a dirt torpedo pic.twitter.com/oQFKsVISkI— Mental Videos (@MentalVids) March 15, 2023
The fuck is going on with the front suspension and steering? Looks like the Akira bike
It has double wishbone front suspension
It’s so fucking cool…
That's pretty wild, I wonder if the steering feels much different compared to a normal bike
> To do so, the team based in Monaco enlisted the help of Venturi North America, the Group’s subsidiary based in Columbus, Ohio, at the campus of Ohio State University (OSU).
>It was there that the Voxan Wattman’s battery was created and built. The engineering students selected the most powerful cells on the market, put them through a series of bench tests, then assembled them in numbers before shipping them to Voxan Motors’ workshop in Monaco,
Wait what the fuck? That’s here.
Think they’d tell me how they made the batteries if I asked?
I imagine they'd want you to pay them for the consulting work
If it was done by students, they probably released some sort of paper on it.
With a frame that big you could fit a turbo LS or some massive gas engine in there. What is the point of making it electric?
Because it was purposely built for electric motorcycle speed records (under 300kg). Pretty impressive at 292mph.
Hub centre steering dates back to the other twenties.
Neat, is this not the standard because the extended wheel base is only desirable in highspeed applications where stability is needed? Or because it adds unneeded complexity? The look of having both wheels hanging in space is quite striking
It doesn't really add much length to a bike, it's just pain in the ass to build for no real benefit, it's engineering for the sake of it. If it gave any distinctive advantage top supersports would be all running it.
Oh, this article
said they went with double wishbones at the front to increase the wheel base, I assumed that was characteristic of this style of bike. It does seem like a bunch more complexity compared to standard forks, I guess it'd be marginally heavier as well.
>It does seem like a bunch more complexity compared to standard forks
If you also compare wheel swing angle you get significantly less in a swing arm setup front, suitable for track/speed records but horrible for slow speed tight turning, like daily bikes do all the time. There might be a good reason they wanted this setup for that particular bike, like having longer wheel base without shifting the center of mass too far forward (large rake forks are pretty shitty to ride so going this way probably wasn't their first idea), it can be a good solution for a specific problem, it's just not a great general solution.
Forkless front ends are typically expensive and have shitty steering feel because of all of the linkages. They also generally have a larger front cross section because the control arms need to clear the tire at full lock, but there's designs that don't have that problem.
It's more complex and heavier. It's mainly to separate the steering from the effects of brake dive. BMW and Honda actually use something similar in their big touring bikes.
Sorta reminds me of the Honda ELF bikes.
if you can understand it you have a fighting chance at building something that will not kill you immediately. Then you can proceed to more application-centric material for motorcycle design. Performance bikes are insanely complicated devices anon, and understanding how they behave as a whole is silly simple in comparison to understanding the physics of stuff like frame design and math to follow so your creation isn't a wobbly death trap.
Looks like the battery is mounted low in the frame. Which is good, it keeps the center of gravity low.
I don't know what type of batteries you have in mind, but they are on the heavy side you should mount them in the same way.
...and speaking of hub steering.
Not sure what batteries would be best. I’ve seen quite a few builds with leaf batteries, so I guess I’ll look into those first. Not sure if I’ll need something better. The batteries and the motor will be by far the most expensive parts of the build, I suspect.
In any case, my battery needs will be dictated by the motor I go with.
Unfortunately, a lot of high performance drive units seem bulky and heavy. I wish I could just steal picrel.
Any ideas on which motor I can use?
I've heard good things about Golden Motor. This one is 26hp (20kw) nominal and 67hp peak. It might be adequate if you keep the bike on on the lighter side like a dual sport bike. If I wanted to build a battery for it I would get Molicel p42a cells and run 28 in series and minimum 10 sets in series. 12-14 series would be easier on the cells
didn't link it like a dick
Not bad, but honestly I’m looking for more power. I was looking at the Emrax 268. It has 117kw continuous power and 210kw peak, with 250nm continuous torque and 500nm peak torque.
Of course this will be much more expensive, but I want to build a true sport bike. I imagine it’ll take me at least 2 years anyways, so I can spread out the costs a bit.
Is there any particular reason why you recommend Molicel p42a cells?
You're not going to be able to get away with using that motor. It's more power than a tesla model 3 and you don't have the space for a battery that big. A model 3 pack outputs 222kw.
A Harley Livewire has a 78kw motor and weighs 460lbs.
With the motr you're using you're going to need an 800 lbs battery.
I recommended the p42a because of the discharge rate of 45a. Model 3 cells discharge 17.8a
I’m only looking at motors of that power (and that one specifically) in the first place because I know they’ve been used in electric motorcycle/superbike builds before. It’s definitely possible. You don’t need a terribly large battery either, most seem to weigh around 50-100kg.
Anyways, I found this build by an Australian guy. Pretty cool stuff:
haha holy shit he used lipos. Lithium polymer cells are more powerful but they also combust all the time. That isn't even a meme the use these in rc planes and drones and shit. They also have a much lower lifespan than regular cells.
I don't know anon I don't like to be a crab but this will be monstrously expensive and the battery will only last like 15 minutes and will need replacing frequently. This is also your first bike right? It's really a huge undertaking and seems like something that would be a magnum opus not not a first bike.
Not saying you shouldn't do it but I think you should start with something smaller to learn. Worst case you can just sell it and get your money back. But hey if you really have that kind of money and extreme patience then go ahead.
>haha holy shit he used lipos.
Yeah, I saw that. Safety seems to be of little concern here. He even had a “first” battery fire, which implies there were more…
Thankfully, most of these bikes do seem to use Li-ion batteries. I even saw an LMO battery setup with a 14kwh capacity, which is pretty insane given that its the same size and weight as an LFP 8kwh battery pack. Regardless, you’re going to be paying a pretty penny for any sort of battery setup, and range is going to be abysmal.
But yeah, you do bring up valid points. This project is going to be stupidly expensive. It’s going to take years and years of dedicated work. It’s going to require a lot of learning and a lot of trial and error. But I’m retarded and want to do it anyways. Besides, learning and planning is free.
Channel the spirit of John Britten
>hand casting engine blocks at home
what a madman
I bet he would have killed for a 3d printer. Makes me wonder if anyone has a file for a little one pot engine to strap onto a bicycle or something.
Start with a bicycle
Go to the ecomodder forums and look up vetter fairing feet forward enclosed. There done.
Get some good brakes.
Electric bikes will never be feasable because you cant fit them with big batteries.
You wanna make some obscure niche record?
Not everything has to be minmaxxed for optimal utility
Ah okay, enjoy then anon, I hope you can make it work.
I have a weird feeling anon will kill himself even before he gets to test ride his contraption, if anything comes of it anyway.
I found the website of osu’s electric motorcycle team. It has all the specs of their bike. I might just copy their drivetrain…
>$9k + tip for the 200kw motor
Not great, not terrible. Motor controllers are expensive as fuck too. The batteries are probably the same. Looks like I’ll need to budget at least 30k-40k for this project.
No you dont, you just wanna pretend that you do for 10 minutes so you made this thread.
Ew. Gross. Just throw a screaming eagle on that bitch and get some pussy.
Screeching Seagull is pleb tier...