I want to make a homemade mid drive bike, but I can't find much information on how to go about this. I've done various searches with Google, but the sheer amount of pages where people are just bolting on a hub motor just gets in the way.
What I want to do is buy a generic full suspension bike and mount http://www.monsterscooterparts.com/24-volt-750-watt-motor-ezip-750.html this motor in front of the front sprocket.
It's a brushed motor, so doesn't need a controller, so I'm just going to have an on/off switch, maybe a 3 position switch, for off, 1/2 power and full power.
It seems like people put a sprocket on the left side of their front sprocket and drive that with their motors for gear reduction purposes.
Since my mountain bike will have 2 or maybe 3 front sprockets, I was just going to use on of those, but I was wondering if there was a reason that people did it the way they did?
The only reasons I can think of is for allowing them to use all of the gears on their bike, which I wouldn't bother with, since me, plus my motor should be putting out a good amount of power, or maybe they use a free wheeling sprocket over the other side. Apparently you can can get free wheeling attachments for pedals, so I don't know about that.
The motor I'm looking at is a 24v, 750w motor, so I only need 2 12volt batteries, I only have a 10k/6.25 mile drive to work and I should be allowed to charge it there, so I don't need a long range.
Nothing's ordered at this stage, so I might look for a 36v, 1000w motor, I found one like that, but it was too long to fit in between the pedals of the mountain bike I was looking at.
I'm planning on doing this very cheaply, I have a mig welder and various tools, etc, it would be so much easier for me to simply buy a 1000w hub motor, but I'm going to build this to save money on driving to work, so it would defeat the purpose to spend lots of money to save money.
I think I should be able to figure this all out myself, since it's going to be a cheap mod, but I'd really like to see how other people did this and the reasons for why they did what they did.
What I want to do is buy a generic full suspension bike and mount http://www.monsterscooterparts.com/24-volt-750-watt-motor-ezip-750.html this motor in front of the front sprocket.
It's a brushed motor, so doesn't need a controller, so I'm just going to have an on/off switch, maybe a 3 position switch, for off, 1/2 power and full power.
It seems like people put a sprocket on the left side of their front sprocket and drive that with their motors for gear reduction purposes.
Since my mountain bike will have 2 or maybe 3 front sprockets, I was just going to use on of those, but I was wondering if there was a reason that people did it the way they did?
The only reasons I can think of is for allowing them to use all of the gears on their bike, which I wouldn't bother with, since me, plus my motor should be putting out a good amount of power, or maybe they use a free wheeling sprocket over the other side. Apparently you can can get free wheeling attachments for pedals, so I don't know about that.
The motor I'm looking at is a 24v, 750w motor, so I only need 2 12volt batteries, I only have a 10k/6.25 mile drive to work and I should be allowed to charge it there, so I don't need a long range.
Nothing's ordered at this stage, so I might look for a 36v, 1000w motor, I found one like that, but it was too long to fit in between the pedals of the mountain bike I was looking at.
I'm planning on doing this very cheaply, I have a mig welder and various tools, etc, it would be so much easier for me to simply buy a 1000w hub motor, but I'm going to build this to save money on driving to work, so it would defeat the purpose to spend lots of money to save money.
I think I should be able to figure this all out myself, since it's going to be a cheap mod, but I'd really like to see how other people did this and the reasons for why they did what they did.
