Adding a windshiel wiper to snow cab

[SnowMower]

OK boys. I have the motor.

http://www.allelectronics.com/images/gold/full/DCM-171.jpg

I know the electrical part. Now, I just don't know how to mount it, and what kind of arm and brackets it should connect to. Any advice greatly appreciated. And any pictures would certainly help.

Thanks
Bill

[Keweenaw4310]

That's pretty much what my curtis cab uses but they have a hole right though the glass for mouting the wiper. Not really a modification you can add later.

Hopefully you have enough mounting space above your glass where you can drill a hole for the arm pivot and then any additional holes you need for structural mountin screws/bolts.

It will be a point of entry for water from melting snow so you'll be sure to need some type of rubber gaskets or washers figured into the mounting holes.

[sixchows]

That looks like its made for a car. The one on my cab has the grooved male stud that connects to the wiper arm sticking directly out of the motor. So mine has a hole for that stud to protrude through the front of the roof panel and then the 2 or 3 smaller holes where bolts go through the roof into the housing to hold the motor in place.

[SnowMower]

Can you boys get me an up close and personal picture of how it looks on your machines?

Bill

[Keweenaw4310]

I can take pictures of mine but not until later. I'm at work right now.

[SnowMower]

Me too, working from home. ;)

Thanks, I look forward to it.

Bill

[sixchows]

I just went and took a few pics. Came back in and tried to download them. Then I remembered! I broke the USB port on my computer this morning! DOH!

[LPBOLENS]

The one on my Cozy Cab mounts like Six's does. I think they all do because of the space restrictions. It also requires a motor that reverses by design when it reaches a certain position.

The one you have there appears to be for a car, and would require sufficient room at the top left or top right of the cab to allow what was called a "transmission" in the car application (actually rods assembled in such a way to convert the rotary motion of the motor to back-and-forth motion at the wiper). You would still need to have a wiper assembly on a shaft that went through the top front of the cab to finish the installation. Not easy to describe, I guess, but if you have ever had the outside cowl off a car or pickup, you will know what I am trying to decribe.

[Keweenaw4310]

Here are pictures of the wiper on my Curtis cab....

------------------> Click here for the link <--------------------------- (http://www.bootjackmi.com/tractor/wiper/pictures.html)

[sixchows]

Here's one on my original cab that sounds like the one on LP's cozy cab

http://i2.photobucket.com/albums/y37/sixchows/IM000386.jpg

[SnowMower]

Hmmm? :confused:

Looks like I've got me some custom fabrication to do to adapt this car motor to the tractor.
From what I can tell from the pictures fellas, and correct me if I am wrong, the "transmission" is built right into your units.

thanks again.

Bill

[sixchows]

Bill
Yeah I guess so it works like LP said it goes maybe 1/2 way and then reverses itself then repeats the process. The one you have keeps going in complete revolutions.

[LPBOLENS]

In my case the Cozy Cab windshield wiper motor autoreverses itself at the end of each sweep to each side, so there is no "transmission" per se. The shaft that comes out of the motor goes right through the metal above the windshield and has the wiper blade arm on the outside end of the same shaft.

My earlier reference to a "transmission" was in reference to how you would have to adapt your current motor to behave as it would in a car application. If as an example you wanted the wiper to be center-top mount over the windshield, you would need to have the motor mounted in an upper front corner with the "transmission" rod(s) crossing to the center above the widshield and attaching to the wiper shaft.

For this application, the fab might not be that bad. If you had a bulkhead shaft that you could mount a wiper arm to on the outside, and on the inside you had an arm off the same shaft that looked kind of like the arm on the motor shaft, then you could connect them with one rod. You might have to fiddle arm lengths and rod length to get the best sweep with no "stalling" or binding, but at least you are not trying to operate two wipers as in a car. That makes for more "transmission" rods.

I have probably made this all as clear as mud, but it's the best I can do without drawing something, and I don't think any of us want to see the result of THAT exercise. :fing20:

Doug

[Keweenaw4310]

Complete revolutions? A hole in the middle of the windshield would accomodate that.

Ok, bad idea.
My first cab on my 455 was hand operated, not motor. I liked that one. Just reached up every once in a while and gave it a crank from side to side. I think that was a cozy cab - possibly right through John Deere.

[SnowMower]

Think I have a pretty good understanding the 'transmission'. Just spent 20 mins in the shed staring at the tractor and the motor.
Looks like I will have to mount the motor to some of kind bracket I will fashing about 3/4 of an inch inside of the windshield. Then whip up a transmission and secure it to a wiper arm with some kind of bolt that goes through the windshield.
Piece of cake. :) [famous last words]. LOL

Stay tuned, will try to put something together over the next few weeks.

Bill

[LPBOLENS]

I don't know; without some careful design work and perhaps more rods, it might do complete revolutions. ROF I guess it depends on the relative lengths of the two arms and their positioning with respect to each other whether or not this will happen.

I would have to model it to be sure of the best way to put it together, but obviously the arm on the wiper motor itself converts rotary motion to push-pull motion when there is a rod attached to the ball stud in Bill's picture. Personally, I'm glad that I don't have some rod dancing around in mid-air above my head when I am using the cab!!

[Keweenaw4310]

Ok, check out my link now. I took the darned thing off and apart for you...

http://www.bootjackmi.com/tractor/wiper/pictures.html

[LPBOLENS]

Right. Your wiper works the same as Six's and the one on my cab. It is an autoreversing straight through design (with the right angle drive head). If he really does have a wiper motor for a car, Bill has a motor that does not autoreverse. It spins one direction only.

[LPBOLENS]

Bill, I cannot stop thinking about the challenge to use your existing wiper motor!! :fing20:

I think the trick is to make the arm on the wiper shaft enough shorter than the arm on the motor to keep the arm on the wiper end from going around. In other words, since the sweep on the wiper has to be something less than 90 degrees, the end of the short lever arm at the wiper needs to point at the motor end when it is at its extreme sweep position towards the motor. And the arm on the wiper motor has to be pointed directly away from the wiper shaft at the same time. Adjust the connecting rod to the derived distance between the two arms. The total sweep of the wiper will be determined by the length of the arm on the wiper shaft. As long as it is short enough to provide less than 90 degrees sweep, the wiper cannot overcenter and go around in a circle, while the motion of the motor arm will change from push to pull right at the extreme of the wiper sweep away from the motor.

Doug

[SnowMower]

http://sylvester.math.nthu.edu.tw/d3/thesis-2003/jyt/another/windshield_wiper/index.2.gif

Look about right?

Bill

[Keweenaw4310]

So the guy on the right with the mowhawk who is kissing the bald headed woman on the left is the one that's going to run the manual wiper?

[LPBOLENS]

Bill, that is the concept I was trying to convey. I think making it work so the wiper doesn't go around in circles is a matter of arm length and relative arm position on the follower.

Doug

[SnowMower]

BTW, thanks for tearing the motor apart. Did ya manage to get it back together ok?

Bill

[dirtybernie]

a quick trip to the bone yard is in order. just get the arm and the wiper setup from a donor vehicle. but would the car wiper motor draw enough amps that the charging system couldnt keep up? just a thought.

[Keweenaw4310]

The motor is back on the gearbox now but it is actually my spare.

[Rusty Jones]

The kind of wiper motor you need is the type used in the 1982 to 1990 Chrysler and dodge/ Plymouth mini vans, on their vans tail gates! It turns so far, then stops and goes the other way! All you would need is some kind of bracket to mount it to the cowl of yer tractor, and then buy the length of wiper arm you would need! (That motor was also used on the Plymouth Horizon, on the rear lift gate.)
Those units should still be available at auto wreckers yards. And, probably not too expensive!
Rusty Jones, the old Chrysler auto body man!