Power in Flux

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Richard230 created the thread Another new electric city motorcycle.
" The low power electric motorbike startups just keep on coming. But how many will still be around in a year or two? I find this one interesting because it looks kind of like a home-built model and is clearly not trying to appear to be ICE powered. https://electricmotorcycles.news/new...ics-show-2019/ "

21 Hours Ago

Stevo clicked Likes for this post: Lark Streamliner EV motorcycle Project by larkmachineco

1 Day Ago

Richard230 clicked Likes for this post: Lark Streamliner EV motorcycle Project by larkmachineco

1 Day Ago

larkmachineco created the thread Lark Streamliner EV motorcycle Project.
" Attachment 8138
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Attachment 8140
Hello,
I am new to the forum and it was suggested that I post on this forum to share my project with the EV motorcycle community.
I would love to hear from you guys about your thoughts and ideas!

I am building an EV Morotocycle streamliner to try to break the SCTA and FIM EV motorcycle record (hopefully above 250mph)

Some basic specs:
22kWh battery LifePO4 32650 Cells (salvaged from a dyno traction battery)
200kW motor and inverter combo (can't say what brand)
Custom chassis
DJ safety Parachete and Fire suppression system
Custom fabricated front end and R6 rear swing arm
Custom VCU (ardiuno based)
R6 cooling system and custom reservoir

Undetermined:
Tires
Wheels
Bearings

Other fun engineering systems:
Body fiberglass
Retractable stabilizers
Automatic parachute release on tip over
System operating code
Battery disconnect unit

I've been trying to film some build videos for youtube.
Check them out over at my channel
https://www.youtube.com/channel/UCYy...ZF6cWWAiTYRHXg "

2 Days Ago

Leftfield created the thread E-Motorbikes, paid market research in the UK!.
" Hello everyone,

My name is Saffron and I work for a company called Leftfield (www.leftfield.co.uk).

We are working with an international design firm to help them carry out a market research project with Electric Motorbike owners, and people who are considering buying an electric motorbike. This is an opportunity to take part in a paid market research project (cash incentives offered for participation) and also to check out some exciting new prototypes that our client is working on.

We’re carrying out most of the research in and around Manchester and Sheffield, so would be especially keen to talk to anyone in that area to see if you’re able to take part.

If you’re interested, please pop me an email to saffron@leftfield.co.uk.

Many thanks,

Saffron "

2 Days Ago

Richard230 replied to the thread A dreamer joins in (for a future Honda Cub conversion, I hope).
" Looks nice, Supercub60. That should be fun to ride around town. Best of luck with your build and let us know how it goes. "

2 Days Ago

supercub50 created the thread A dreamer joins in (for a future Honda Cub conversion, I hope).
" Hi everyone,

I decided to join the forum as I've for some time now been playing with the idea of building my own electric bike, inspired by the Deus Bike Build Off and the Shanghai Customs electric Honda Cub conversions. I do find the clean aesthetics quite pleasing with the stamped frame, hub motor and hidden battery. In December I stumbled upon a Honda C50 on the German ebay and decided to jump at the chance, since I'd need to see everything in detail to evaluate if there is even a chance for me to pull off some kind of a conversion to electric drive. I've got some experience on modifying a couple of 2-stroke Yamahas, but nothing electric until now.

So the bike is a Vietnamese import, with a bit funky wiring and quite interesting frame features (kind of a combination of different production years, at least based on looking at the original Honda part diagrams).
The bike is registered as a "light motorcycle" (Leichtkraftrad in Germany) due to the official stated top speed being 75 kph, even though the motor's only 50 cc. Which in my eyes makes it a good project for the conversion since I won't be stuck with the max. 45 kph of mopeds.

Regarding the modification, I am aiming at something custom similar to the aforementioned eCubs. I was thinking of getting a QS 205 hub motor, preferably with a drum brake since I assume the German TÜV won't like brake system modifications much. The swingarm will need to be modified to get the hub motor axle in. For the controller, I've seen that QS suggests the Sabvoton controllers, which I guess are quite alright?

For the battery, I was thinking of as many 18650 or 21700 cells as possible under the seat. I hope 60 V (16s) will get me a cruising speed of 60 kph on flat. And the battery should be cased and removable, as I'd like to charge it somewhere safer than the cellar I call my building space, in case it all turns into a ball of fire. Need to measure everything out inside the frame to see how much space I really do have.
Also I need to run a 12 V system through a DC-DC converter, which I think might fit inside the original battery box on the side of the frame, just need to make the cover water proof.

So that's it, until now I've only had the time for short test rides and figuring out the DIY-wiring so I get the head and tail light working. I guess this season will be spent still on gasoline while measuring out the frame and planning the new components.

Any suggestions and hints are welcome! "

2 Days Ago

Ted Dillard replied to the thread Best Gearing for your bike..
" ...for those reading this thread after it's been de-boticized, it's getting hammered by every bot on the planet. "

4 Days Ago

Ted Dillard replied to the thread Best Gearing for your bike..
" the fuuuuuuuu? "

4 Days Ago

Stevo replied to the thread Sachs xtc 125 conversion.
" I love European plywood.... it's hands down 100x better than the 5 layer crap we have in USA. "

4 Days Ago

flo replied to the thread Sachs xtc 125 conversion.
" Don`t know why the manage attchment sometimes rotates the pics 90 deg to the left... on my cam and pc they are upright ?? "

4 Days Ago

flo replied to the thread Sachs xtc 125 conversion.
" Happy new year everybody.
After 32 Days of cycling and testing and retesting the weakest cells here is the outcome
Best 1 mOhm worst cell 5 mOhm
Best 26,7 AH worst 22,3 Ah between 4,12 and 3,35 V
2 cells soft
2 cells show some iregulation on the layers right beneath the outer aluminium packing... definetly not use them
2 cells got tabs weldet on ? so definetly not new even if unused... but they are strong so i only have to figure out how to adjust connectors...

While cells idling on the linup of 4 chargers/dischargers.. i used the time to do some things non ev related..
Like milling a new mould for a new plane i designed...
and
build a nice christmas present for my love..
enjoy: "

4 Days Ago

Ted Dillard replied to the thread Best Gearing for your bike..
" ^^^ The bots are getting more sophisticated. This one's almost even on topic even. "

5 Days Ago

furyphoto replied to the thread Is this an electric motorcycle?.
" Makes the Livewire seem like quite a bargain! Buy an overpriced Harley and save ten grand! 😐

Quote Originally Posted by A-Bomb View Post
The Novus is only $39,500! Wow! $3,950 would be a more reasonable price for a little bike like that.
"

1 Week Ago

A-Bomb replied to the thread Is this an electric motorcycle?.
" The Novus is only $39,500! Wow! $3,950 would be a more reasonable price for a little bike like that. "

1 Week Ago

Richard230 replied to the thread Electric Harley?.
"
Quote Originally Posted by Ted Dillard View Post
I might be missing something but I haven't seen anything on the specs that is better than a Zero SR. Which you could almost by two of for that price.
Well, it does come with a Blue Tooth app that allows you to do various things besides ride your LiveWire. You can probably use it to serenade the neighborhood as you ride along, take calls from your buddies and maybe even listen to a really loud potato, potato, exhaust sound to remind you what you are missing by riding an electric motorcycle. And it is free - for the first year, after which you have to pay a subscription fee to continue to use it. My Zero app is not only free, but it gets updated regularly. (Not always a good thing, though, and it doesn't let me make phone calls or watch a movie while I am riding along.) "

1 Week Ago

Ted Dillard replied to the thread Electric Harley?.
" I might be missing something but I haven't seen anything on the specs that is better than a Zero SR. Which you could almost by two of for that price. "

1 Week Ago

Stevo replied to the thread Electric Harley?.
" Screw that... $30 grand will buy you a beautiful low mile used Porsche! "

1 Week Ago

Richard230 replied to the thread Electric Harley?.
" Here is a link to a 17-minute long video detailing the features of the H-D liveWire. Kind of interesting, but what I really enjoyed reading were the comments below the video. The people posting comments really dumped on the poor bike, mostly about its price. Some of those guys are really funny. Most of them feel that the LiveWire is going to be a real dust collector in H-D showrooms - after a few are purchased by "rich dudes": https://www.youtube.com/watch?v=5EKvj_u8C28 "

1 Week Ago

Nicman clicked Likes for this post: Sun 300-1774 by Spoonman

1 Week Ago