So, I see a lot of the "air-push" type windshield wiper motors, with their arms and that unique blade that you see on locomotives. It's a thin blade with one half wrapped in a thin metal jacket, and a hole halfway down where it bolts to the wiper arm. Most locomotives have them, you know the ones.

Where do you get those??

Try this company, we have had good dealings with them over the years.

http://www.epowerrail.com

Hope they have your needs,
Tim S.

Try local auto parts center. We get ours at NAPA. They are a standard tractor single blade wiper. They might come in multiple lengths, or we just cut them to fit our windows. They work well and come with small adapters for different size wiper arms.

Pat Connors

We have used Rome Truck Parts for blades like these.
http://www.rometruckparts.com/pdfs/blades/flat/C-1100-L%20&%20C-1100-2-L.pdf

Slightly more mainstream option ... Amazon.com: http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=trico+flat+blade

A couple years ago I was looking for replacement blades for some of our transit cars and wound up getting a ton of them for a really good price on Amazon, as they were on sale ... something like $3.00 a blade (with free shipping). I don't see them on sale for that low right now, but it's something to keep an eye on if you want to buy a whole bunch of them.