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Stevo replied to the thread Aprilia RS125 2-STROKE conversion.
" Can the rear shock be resprung and dampened? I checked my suspension go to RaceTech and they only have kits for RS250 "

6 Hours Ago

gregjet replied to the thread Aprilia RS125 2-STROKE conversion.
" Take one of the best handling motorcycles on Earth and add 43kg to the back wheel of a bike that weighs not much over 100kg total. Unsprung to sprung mass is not exactly ideal. Rear suspension will be completely overwhelmed. "

19 Hours Ago

MrModify replied to the thread Aprilia RS125 2-STROKE conversion.
" It's a QS Motor 14kW (nominal) and 34kW (maximum) hub-mounted motor. 43kg. 350Nm of torque. "

1 Day Ago

Nifty replied to the thread Hi from Tasmania BMW K100 Electric..
" Hi Guys. Stevo! You said good luck with the programming,??? Havnt done so well yet. After two years plus tinkering the motor actually turns !!!. Have to dig deeper into the secret files of Curtis to extract the righ dial ups i need. Jon at Bylong/Catavolt is being very helpful,pity my brain isn’t. However ill peas on and hope to have some more positive updates and pic soon. Cheers guys, and don’t let this Covid scamdemic get u down. "

1 Day Ago

Spaceweasel clicked Likes for this post: Hi from Tasmania BMW K100 Electric. by Nifty

1 Day Ago

EVcycle replied to the thread Battery Help!.
" Chevy Volt batteries come in a 48 volt single pack. Ready to roll for around $500.
I have used them in several projects. You can purchase 50.4V Lithium chargers for about $250.
Use the Controller as a BMS and have fun!

Ed "

4 Days Ago

Stevo clicked Likes for this post: Hi from Tasmania BMW K100 Electric. by Nifty

5 Days Ago

Stevo replied to the thread Battery Help!.
"
Quote Originally Posted by 4r3st3r View Post
Hi all,
Some questions:
The BMS is attached to the battery (?) so would a battery that I buy come with a BMS pre installed. Do I need to program or edit the BMS to ensure that it keeps the cells in the battery balanced and with enough voltage? Or can I leave it to it, and use / charge the battery as I would with a lead-acid battery?
Is it better to get a battery custom built with the correct voltage / amperage output with a BMS that can handle that?
I think I have two mounting places for batteries, is it better to buy two 48v batteries (each with a BMS) and mount them in parallel, or two 24V batteries and mount them in series (with a BMS each, or one for both?)
If you buy from a salvage yard to get a good deal on Nissan Leaf modules or Chevy Bolt modules you will need to learn how to cut them apart.
Same with a Tesla pack, but all of those flashlight batteries will be a challenge to incorporate a BMS. The pouch cell modules are easier to deal with.
If you are building your own pack, like I did, you can arrange them anyway you want or need to. since this is your first build, try to go with one stack in series and figure out how to mount them on your frame space. They can be divided into groups. I have 3 groups of battery pouches all wired in series. There are a few BMS options available,,,, you'll have to do some research. I went with the Thunderstruck BMS.
ElectricCowboy has some good advice for you, But if you want to do your own from scratch, AND if you have the ability to weld and fabricate your own mounts and stuff, you can build your own for 1/2 the cost of a Boom Moto "

5 Days Ago

Nifty replied to the thread Hi from Tasmania BMW K100 Electric..
" Hi Spaceweasle. Made a new clutch center bolted to the clutch basket of plates etc. Keyway on motor shaft to fit center,same offsets all round just a different input,ie, electric motor. Made in conjunction with the adapter plate so all bolts up neat.Time will tell how the box /motor combo works.Bronze bush in end of motor shaft to center the box input shaft.Am trying to upload more as i can,stay tuned. "

5 Days Ago

Richard230 clicked Likes for this post: Boom Moto actually delivering bikes by Electric Cowboy

6 Days Ago

Electric Cowboy created the thread Boom Moto actually delivering bikes.
" Boom Moto uploaded a video about actual deliveries, this is super impressive. I personally saw a custom Orange bike with some Native American designs get picked up by a customer while Morgan and I were there. These guys are really working hard.

https://www.youtube.com/watch?v=pdOagsh_9SI "

6 Days Ago

Spaceweasel replied to the thread Hi from Tasmania BMW K100 Electric..
" How did you interface the motor with the transmission/clutch? "

1 Week Ago

Electric Cowboy replied to the thread Battery Help!.
" A lot of these answers depend on your build. You might want to consider one of the Boom Motos. They are not as polished as Zeros or Energicas, but they are 10kW hub motors with 6-9kwh batteries. and they cost $6500 to $7500 they are reasonable quality for the cost, and EASILY hackable. Way better to start with one of these and modify than to build from scratch if you are new. It will also help you learn a lot.

They aren't perfect, but they are good enough for their price. "

1 Week Ago

4r3st3r created the thread Battery Help!.
" Hi all,
After seeing all of your amazing builds, I have been inspired to build my own E-conversion. However, I know almost nothing about lithium batteries, BMSs or charging technologies and so I would love your advice before I blunder in and spend too much money on the wrong thing!

I will be using:
QS Motor 3Kw 48V hub motor
Kelly Controller KLS7254N

As far as I understand: the battery uses 50A continuous and 100A peak, so I need a 48v battery that can provide those Amps. Is that right?
Some questions:
The BMS is attached to the battery (?) so would a battery that I buy come with a BMS pre installed. Do I need to program or edit the BMS to ensure that it keeps the cells in the battery balanced and with enough voltage? Or can I leave it to it, and use / charge the battery as I would with a lead-acid battery?
Is it better to get a battery custom built with the correct voltage / amperage output with a BMS that can handle that?
I think I have two mounting places for batteries, is it better to buy two 48v batteries (each with a BMS) and mount them in parallel, or two 24V batteries and mount them in series (with a BMS each, or one for both?)

Apologies if these questions have been answered elsewhere! I worry most things on this forum go straight over my head!
Thanks in advance for any and all help / advice!! "

1 Week Ago

Electric Cowboy created the thread We got to go to Boom Moto to ride, review, disassemble, and provide feedback.
" The guys at Boom Moto seem like really genuine people and are already implementing some of the feedback we gave them. I have really high hopes for their product which is a Chinese / American teamwork thing. Like lightning, these are manufactured in china, unlike lightning, these are affordable at 6500-7500 USD a piece, and they have slightly less performance than the lightning, but a lot more safety. They do have a lot to work on still, but I would get one for tooling around town or putting around the ranch.

We are still working on editing up the review, and recording the final bits. For now though, here is how they reviewed us! Super cool to see!

https://www.youtube.com/watch?v=vtL2_qYZYxU "

1 Week Ago

roadpupp created the thread Connecticut guy upgrading an E Boom Vader, E Grom..
" Hey all-

Been lurking here for awhile. Great group! I got a Razor RSF 650w midrive for my kid and have been upgrading it. Started thinking about finding a donor bike to covert to electric and discovered the Grom Clones with 72v of SLA and 2000w hub motor.

I have a short wife who wanted a motorcycle or scooter and she likes this little electric bike. I have had a blast running around the neighborhood on it but also bought it as a platform to mess with upgrades. My hope is to mod it with a new QS hub motor, controller and battery pack, and with luck, it will get lighter and faster but I can still put it in "low mode" for my wife to ride. I am more interested in real zip than top speed but have registered it as a motorcycle so i can do short stints on faster roads.

So far I installed the fender delete, added one more SLA to go to 84 volts and have an upgraded shock to install.


I am hoping to get some up-to-date info on what controllers and battery packs people are running. I like the idea of Nissan Leaf Gen2 but can't see how i could fit the pack I want without fabricating new bodywork. This bike is small!

Looking forward to learning more about electric bikes. I spent many years wrenching ICE bikes but now am excited by doing the same with electrics.

_Roadpupp "

1 Week Ago

roadpupp replied to the thread Chinese E-Vader/E-Grom/E-Monkey.
" Bio
I received a Boom E Vader with SLA batteries a month ago. Same hub motor you have. I am working on upgrades myself and would love to share tips and tricks.
-
Chad "

1 Week Ago

kennystone replied to the thread Electric motorcycle history.
" Thank you for the article, quite unexpectedly, that the history of electric transport as a whole began more than 100 years ago "

1 Week Ago

kennystone replied to the thread Hello from Ukraine!.
" With the tracks so far things are not very good, have to travel outside the country. Hope that things will change in the future "

1 Week Ago