Electric Vacuum Pumps · 23 August 05
After ten years on the internet, hundreds of thousands of visitors, and thousands of emails what do you think the most popular question about the EV conversion is?
Hey, where’d you get the Vacuum Pump?
I bought it from a company called EcoElectric, which has since gone out of business. I suspect they bought the various parts and put it together inside of an aluminum hobby box. Here’s a photo of the insides of the box with the major sections labelled.
Probably the toughest part to find is the 12vdc motorized vacuum pump. Here’s a closeup of the label.
The part number is 608757 and it says VDO Antriebstechnik at the top. It also show a type: M42×25/I
And that’s about all I can tell you about those. A few years back I found some via a web search, but no such luck today. Here are a few suppliers (drop me an email or leave a comment if you know of others):
Believe it or not, out of 60+ people asking where they can find a vacuum pump one fellow wrote to tell me where to find them. There was a small car model that didn’t generate enough vacuum in the engine so they all shipped with an electric vacuum, which he said you can still find in junkyards. Here’s a list of vehicles with electric vacuum pumps.
Another fellow suggested using an old air conditioner compressor and running it off of the electric motor…but that means no vacuum generation unless the motor is spinning. Here’s one built out of an old fridge compressor, but probably not something you want in your vehicle.
Update 5/22/06: Matt writes that he’s using the pump for this motorcycle horn. Even with the horn removed it’s on the noisy side. Another reader sent along a link to this site that shows some of the typical booster types out there.