| Author |
 Topic  |
|
Mav80
Apprentece
USA
26 Posts |
 Posted - Jun 01 2011 : 12:24:33 AM
|
Hello, I was trying to build an electric scooter when I stumbled upon this site and saw the exact kind of scooter i had in mind. I plan on using this motor kit: http://www.monsterscooterparts.com/24-volt-350-watt-motor-controller-throttle-kit.html , which uses an eleven tooth sprocket. Its a 24v 350watt motor. My gear ratio is 5:1. I want to go about 10 miles, for the round trip to the school and back, but coming home it is hilly all the way. I was thinking of buying either 7ah or 10ah batteries, but I'm not sure if the extra money for the 10ah is worth the performance.
I'm only thirteen, so any help is well appreciated |
|
|
Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jun 01 2011 : 12:00:04 PM
|
Great price! But according to the website that kit is out of stock. I can't say if that gear ratio will work without knowing the size of your rear tire. If it's the typical 6", then it should be fine. Though at 350W, I'd recommend about 8:1 if you intend to climb hills. 350W is a pretty small motor. In a hilly area with that motor I'd say go for the 10AH, especially if it has to travel 10 miles. I have a very similar motor on my scooter but it's been rewound and I'm also pumping it with 48V on a controll capable of 1000W. I only run a 3:1 reduction with a 6" wheel and it attacks hills but draws 1000W while doing so.
|
 |
|
|
Mav80
Apprentece
USA
26 Posts |
Posted - Jun 01 2011 : 3:36:55 PM
|
| My tire is 8", so will that make it easier for hills? Or should I just save up some more money and invest in a 500watt or 1000watt motor? |
|
|
|
Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jun 05 2011 : 10:34:00 AM
|
| With an 8" tire you will need a larger reduction between the motor and wheel. Adding wheel diameter is like decreasing the the ratio between the motor and wheel. I'd recommend a 10:1 reduction with that motor and wheel. Or a 6:1 reduction (to 8:1) with a 500W motor. A 1000W motor is a good way to go but at that point you are wanting to go to 48V. |
|
|
|
Mav80
Apprentece
USA
26 Posts |
Posted - Jun 05 2011 : 5:55:51 PM
|
Ok, thanks for all your help. The wheel assemblies I ordered came in friday, and I built the front forks yesterday. I'm gonna keep saving for the 500watt motor. Maybe I'll post some pictures when I'm done.
Thanks again. |
|
|
|
Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jun 11 2011 : 11:06:03 AM
|
Post some pictures of the work in progress.  |
|
|
|
paulh
Apprentece
5 Posts |
Posted - Jun 15 2011 : 10:25:02 AM
|
I remember a similar project we had in college for our engineering class. Though, it can be classified as a remote controlled racing vehicle, we constructed a 1/10th scale model of an electric scooter. making it run on its own controlled through a radio device that transmits directly to its receiver.
We made it to run on part fuel and part cooking oil. Though, it did not log in impressive run times as we had very limited resources. |
|
|
|
Mav80
Apprentece
USA
26 Posts |
Posted - Jun 23 2011 : 02:21:05 AM
|
quote:
Originally posted by Aaron Cake
Post some pictures of the work in progress.
I finally got around to taking some pictures but my internet was giving me a hard time so icouldn't upload them. I'll try again tomorrow though.
On the rear wheel, the main forks are going to run all the way up into the motor housing. Coming off of the forks are steel supports cut and welded on at a 45 degree anlge. Then, in order to keep everythng from toppling over as soon as we put some weight on it, we added in two spacers consisting of some square aluminum tubbing with 3/4 in conduit inside. All that then had to be bolted to the 1 in conduit running the length of the deck. It was a huge mess, and everything was crooked and leaning everyway except the way we wanted it to. But miraculously, everything worked out in the end, and the tire is perfectly straight.
So, with my mom coming to pick me up soon, we decided to get it ready for a little show and tell. The old scooter deck was screwed on to the widened deck (actually an old yeild sign cut to the shape) and we were able to wheel it around the shop, however it needs some cross members before it will be strong enough to ride
Anyways, the motor kit ships this friday and should be here by thursday, at the the latest. All thats really left to do is build the motor housing and battery compartment.
|
|
|
|
Yerboogieman
Nobel Prize Winner
USA
577 Posts |
Posted - Jun 23 2011 : 4:00:31 PM
|
| Aaron's webpage sucks for uploading files. It's better to upload them to photobucket or something, and paste a link. |
If you don't have the time to do it right, when will you have the time to do it over? |
|
|
|
Mav80
Apprentece
USA
26 Posts |
|
|
Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jun 25 2011 : 10:15:58 AM
|
Looking good! Where you will you be mounting the batteries?
One thing I'd be concerned about is the flat plate used to mount the wheels. I think that if you hit a bump or curb while the scooter is leaning, it's going to bend. |
|
|
|
Yerboogieman
Nobel Prize Winner
USA
577 Posts |
Posted - Jun 25 2011 : 9:29:17 PM
|
| The second picture makes it look really great and professional. Nice job. |
If you don't have the time to do it right, when will you have the time to do it over? |
|
|
|
Mav80
Apprentece
USA
26 Posts |
Posted - Jul 03 2011 : 5:40:50 PM
|
quote:
Originally posted by Aaron Cake
Looking good! Where you will you be mounting the batteries?
We're going to make a small box out of some scrap aluminum plating from my dad's work, instead of a floorboard running the length of the deck. There will be a hinged door on the bottom of it for easy battery loading.
quote:
One thing I'd be concerned about is the flat plate used to mount the wheels. I think that if you hit a bump or curb while the scooter is leaning, it's going to bend.
Thanks for pointing that out. We will attach another strut to the battery box to keep it from bending like that.
The site I'm buying my motor kit from keeps changing the day it says it will recieve their motor shipments, so it could be awhile before we finally finish this project. |
|
|
|
Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jul 10 2011 : 10:11:35 AM
|
That's too bad about the motor being delayed. I generally buy my parts from http://www.electricscooterparts.com and they've always been good with shipping (though sometimes a bit expensive).
That said, the rear wheel blew on my scooter a few weeks ago. I've had constant issues with the wheels because they weren't designed for this type of use. So now I need to take the risk and just buy another or try to find better 6 x 2 wheel...which seems to be hard to find.
It may be easier to hinge the top floorboard instead of the bottom. Or, since the batteries really don't need to be accessed all that often, just bolt on the covers. |
|
|
|
Mav80
Apprentece
USA
26 Posts |
Posted - Jul 15 2011 : 02:03:32 AM
|
All the motor stuff finally shipped awhile ago and I was lucky enough to go to Yosemite for a couple nights, which kept me from going crazy trying to track it every second of the way.
About your tire problem, from the little bit of research I've done, it seems that 8 inches is the more standard size. On most sites you can also get wheel assemblies that come with the sprocket and a way to mount it. |
|
|
|
Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jul 16 2011 : 10:38:22 AM
|
| I may have to go to 8" another option is to make my own 6" inner tube. They tend to fail around the valve stem so I could also just buy a new one and reinforce that area. |
|
|
|
Topic |
|
Scooter project
