Been busy all year with the house, so I have a few more things to add.
First off, I cut down the front pillar so the hood would be tapered downwards like it should have been in the first place. The panels don't have such horrible gap issues now.
I still need to make a grill though...
I also mounted the forced air fan to keep the motor cooler while I run it.
Here's the inlet.
This is the only time you will see duct tape on this project, I promise you that. It's legitimate though, this is technically a duct.
The 3 point hitch had the unfortunate propensity to twist and tilt on me.
So I had to build a bracket to keep the arms parallel. It adds some effort to add or remove an implement, but it's not bad.
I also made it a more convenient place to connect the winch, and give it some more lifting power, not that it was a problem before, but this also gives me better control.
Coming together nicely.
Electric Tractor
This project is centered around the restoration of a 1948 Massey Harris 20 and its conversion to run off batteries and an electric motor.
2011/12/02
2010/12/24
Snow Job
2010/08/01
Good thing the weather was bad this spring.
Because the tractor wasn't quite ready to handle the rigors of a garden yet.
Experimenting with cultivation provided mixed results. It had power, once I took two of the outer tines off the cultivator. I was able to claw several passes through the very tall grass in my backyard.
This is before I took the outer tines off.
My implements wanted to swing a lot because I didn't have any kind of stabilizer chains in place, and the winch lifting hook being off centre didn't help. A ratchet strap worked perfectly as a temporary solution.
However, the little motor just wasn't up to the job. I overheated it pretty badly, as it had to spin very slowly and draw a lot of current. It wasn't able to cool itself with the built in fan.
So I pulled out the motor.
Found I had melted all the insulation. I have since taken it to an electric motor repair shop, the coils are all good and the wiring was fine, so they reinsulated it for me.
So, down for the count for a few weeks. I found and bought a bigger, more powerful 48v motor from D&D.
It's a lot longer than the old motor as well. Won't fit in the motor mount I made for the last one.
Good thing I'm not the sentimental type.
All hooked up, and back in business.
I did a couple tests with it, cultivated 3 lines, ran up the road at full speed, ran the disc harrow for about 20 minutes. It pulled a LOT harder, smoother and all around better. Temperature stayed at an acceptable level.
Still, I've ordered some active cooling and some gauges, so I will be installing those before I go all out with the cultivating again.
Experimenting with cultivation provided mixed results. It had power, once I took two of the outer tines off the cultivator. I was able to claw several passes through the very tall grass in my backyard.
This is before I took the outer tines off.
My implements wanted to swing a lot because I didn't have any kind of stabilizer chains in place, and the winch lifting hook being off centre didn't help. A ratchet strap worked perfectly as a temporary solution.
However, the little motor just wasn't up to the job. I overheated it pretty badly, as it had to spin very slowly and draw a lot of current. It wasn't able to cool itself with the built in fan.
So I pulled out the motor.
Found I had melted all the insulation. I have since taken it to an electric motor repair shop, the coils are all good and the wiring was fine, so they reinsulated it for me.
So, down for the count for a few weeks. I found and bought a bigger, more powerful 48v motor from D&D.
It's a lot longer than the old motor as well. Won't fit in the motor mount I made for the last one.
Good thing I'm not the sentimental type.
All hooked up, and back in business.
I did a couple tests with it, cultivated 3 lines, ran up the road at full speed, ran the disc harrow for about 20 minutes. It pulled a LOT harder, smoother and all around better. Temperature stayed at an acceptable level.
Still, I've ordered some active cooling and some gauges, so I will be installing those before I go all out with the cultivating again.
2010/06/20
Welcome home.
So I moved into my house on the 16th of April. It's taken a long time, but I was finally able to get my tractor here. There have been a lot of setbacks, delays, and emotional hardships that I don't want to go into here.
Soon I will be able to cultivate the grass and weeds growing in my lot and plant some cover crop. I won't have enough time this year to plant a proper garden (Alberta's weather has been insane this year) but I can plant a few things, beans, peas, maybe some shallots or something. Watch this space for video updates of the tractor actually doing things.
Soon I will be able to cultivate the grass and weeds growing in my lot and plant some cover crop. I won't have enough time this year to plant a proper garden (Alberta's weather has been insane this year) but I can plant a few things, beans, peas, maybe some shallots or something. Watch this space for video updates of the tractor actually doing things.
2010/04/02
I need some outside support.
2010/03/28
I was framed.
So with the battery frame done:
I started working on the sheet metal. But it turns out that was a bad idea. When I built that replacement hood support, I measured the height off the dashboard support, guessing that the front of the hood would be at the same height.
As you can see, there are some rather serious panel gap issues. No matter, I'm putting the sheet metal to bed for the time being, until I can get my hands on a metal brake and an air compressor so I can make some new side panels. That probably won't be until winter.
Speaking of winter, I need to finish that snow/dirt plow that I was building.
I should have measured the distance between the top uprights of the frame before I welded it, it was too narrow. So, I cut them off, made new ones, drilled them out, and welded them onto the frame.
Made a little support for the plow.
Then I welded it onto the frame. Ignore the clamp, I didn't have a proper 1/2inch bolt for the main 'hinge'.
There are three holes in the plow bracket so I can angle it however I want. Should be useful.
Looks pretty good, too.
I started working on the sheet metal. But it turns out that was a bad idea. When I built that replacement hood support, I measured the height off the dashboard support, guessing that the front of the hood would be at the same height.
As you can see, there are some rather serious panel gap issues. No matter, I'm putting the sheet metal to bed for the time being, until I can get my hands on a metal brake and an air compressor so I can make some new side panels. That probably won't be until winter.
Speaking of winter, I need to finish that snow/dirt plow that I was building.
I should have measured the distance between the top uprights of the frame before I welded it, it was too narrow. So, I cut them off, made new ones, drilled them out, and welded them onto the frame.
Made a little support for the plow.
Then I welded it onto the frame. Ignore the clamp, I didn't have a proper 1/2inch bolt for the main 'hinge'.
There are three holes in the plow bracket so I can angle it however I want. Should be useful.
Looks pretty good, too.
2010/03/16
Leaded fuel only.
So in building this new tray, I had hoped to get four on the bottom, and four on the top. Unfortunately, as I had built the motor mount slightly bigger than it needed to be, there isn't enough room to get all four in the bottom. No matter, three and five will work out fine, if slightly top heavy.
Support for the top rack.
Drilling holes to secure it to the frame.
Sizing it up.
Gussets like crazy. Just made these out of scrap I had laying around. If I need more in the future, I'll add more. No big deal.
Since this is going to be somewhat tight and cramped, I have to remove the top batteries to get at the lower ones. May as well make it easy for myself to get the bottom ones in and out, so I drilled holes to make this side of the rack removable. Somewhat easy access is important, as these are trojan batteries that have to have their cells checked every so often (acid levels, specific gravity).
Test fitting.
Built a mini-tray for the single 12v that I have room for. I had hoped to get more in there for a paralleled bank, but there's not enough room.
All painted up.
New weatherstripping for the batteries to cushion themselves on.
Bolted down and wired up.
Gave it a quick test, everything seemed normal, so I put the hood back on.
Took it for a short test run on the driveway (first time it's moved in a month and a half), was very satisfied, so I tucked the little batteries in for their very first charge cycle.
All in all, a productive two weeks.
Coming up next, I finish that damn plow blade mount.
Support for the top rack.
Drilling holes to secure it to the frame.
Sizing it up.
Gussets like crazy. Just made these out of scrap I had laying around. If I need more in the future, I'll add more. No big deal.
Since this is going to be somewhat tight and cramped, I have to remove the top batteries to get at the lower ones. May as well make it easy for myself to get the bottom ones in and out, so I drilled holes to make this side of the rack removable. Somewhat easy access is important, as these are trojan batteries that have to have their cells checked every so often (acid levels, specific gravity).
Test fitting.
Built a mini-tray for the single 12v that I have room for. I had hoped to get more in there for a paralleled bank, but there's not enough room.
All painted up.
New weatherstripping for the batteries to cushion themselves on.
Bolted down and wired up.
Gave it a quick test, everything seemed normal, so I put the hood back on.
Took it for a short test run on the driveway (first time it's moved in a month and a half), was very satisfied, so I tucked the little batteries in for their very first charge cycle.
All in all, a productive two weeks.
Coming up next, I finish that damn plow blade mount.
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