kids bike electric image
oldfarrrrt
i am trying to make an electric bike for my granddaughter. can anyone give me some suggestions on how to accomplish this? what size motor would i use? can the battery be recharged while in use? any info would be appreciated.
Answer
To answer your question, 24 to 36V would be more realistic. 12V will be a very slow e-bike (maybe that's what you want?)
That said, this is a classic make-vs-buy proposition. Let me hazard a guess that you want this by Christmas, and it needs to work, right?
I suggest buy.
The reason is, motors for e-bikes are much more robust than those you might find in a hand tool, kid's ride-on toy or a starter. A typical e-bike motor will be 500W or more sustained duty, and so will have the extra mass and cooling to handle it. A tool or starter motor just isn't built for that kind of duty and will fail in short order.
Plus, the kit will come with a speed control - and if done right the controller will do regenerative charging too.
Lucky for you, there's lots of e-bike kits, both the in-hub style and chain drive. Looks like they run about $400, with the bulk of the cost being the motor and battery.
First link below is to a site that sells both parts and complete kits. (Lots more if you google "electric bike kit" - second link is just an example).
BONUS: sub-8 second electric drag bike (last link.) Just because.
To answer your question, 24 to 36V would be more realistic. 12V will be a very slow e-bike (maybe that's what you want?)
That said, this is a classic make-vs-buy proposition. Let me hazard a guess that you want this by Christmas, and it needs to work, right?
I suggest buy.
The reason is, motors for e-bikes are much more robust than those you might find in a hand tool, kid's ride-on toy or a starter. A typical e-bike motor will be 500W or more sustained duty, and so will have the extra mass and cooling to handle it. A tool or starter motor just isn't built for that kind of duty and will fail in short order.
Plus, the kit will come with a speed control - and if done right the controller will do regenerative charging too.
Lucky for you, there's lots of e-bike kits, both the in-hub style and chain drive. Looks like they run about $400, with the bulk of the cost being the motor and battery.
First link below is to a site that sells both parts and complete kits. (Lots more if you google "electric bike kit" - second link is just an example).
BONUS: sub-8 second electric drag bike (last link.) Just because.
What are some good ways to mooch off my college?
tolkienfan
Since college is expensive, I need to find ways to use their facilities to my best advantage.
So far I have
-charging my stuff at school (phone, camera, batteries, &c)
-working out/showering at their gym
-studying more on campus to reduce my electric bill when studying at home
Anything else?
Answer
At the end of the school year, go to the dumpsters outside the residence halls. Kids toss out some great stuff as they move out, simply because they don't have room to take it home. You can get furniture, rugs, electronics, bikes, textbooks - seriously, go dumpster diving. You won't be the only one doing it.
Go to art openings and opening nights for performances on campus. There is often free food. We actually learned which galleries gave the best food on campus, and would make sure to hit them on opening night.
Attend free events at your school. There are often free plays, concerts, lectures, movies - take advantage of all of that.
Furnish your apartment with milk crates. Not that I'm telling you to steal milk crates. Not that I myself did that or anything.
Join the local library in town, and get your DVDs and CDs from them for free. Your uni library may also have this stuff, but often does not - so use the local library. Find out if your textbooks are held in reserve at the library (and if not, ask your prof if he can put a copy on reserve), then use it there instead of buying the book.
Kill cable, and either watch tv in a lounge at the school or else watch stuff off the internet.
At the end of the school year, go to the dumpsters outside the residence halls. Kids toss out some great stuff as they move out, simply because they don't have room to take it home. You can get furniture, rugs, electronics, bikes, textbooks - seriously, go dumpster diving. You won't be the only one doing it.
Go to art openings and opening nights for performances on campus. There is often free food. We actually learned which galleries gave the best food on campus, and would make sure to hit them on opening night.
Attend free events at your school. There are often free plays, concerts, lectures, movies - take advantage of all of that.
Furnish your apartment with milk crates. Not that I'm telling you to steal milk crates. Not that I myself did that or anything.
Join the local library in town, and get your DVDs and CDs from them for free. Your uni library may also have this stuff, but often does not - so use the local library. Find out if your textbooks are held in reserve at the library (and if not, ask your prof if he can put a copy on reserve), then use it there instead of buying the book.
Kill cable, and either watch tv in a lounge at the school or else watch stuff off the internet.
Powered by Yahoo! Answers
Title Post: is it poss to run a bicycle or small motorcycle on 12 volts dc?
Rating: 94% based on 932 ratings. 4,1 user reviews.
Author: Unknown
Thanks For Coming To My Blog
Rating: 94% based on 932 ratings. 4,1 user reviews.
Author: Unknown
Thanks For Coming To My Blog
No comments:
Post a Comment