Double pump from Leimbach
 

Not sure if you would call it twin or double pump (or something else ;)), but it's nothing I've seen before.

http://www.leimbach-modellbau.de/Doppelpumpe.html

https://translate.google.com/transla...ppelpumpe.html

Re: Double pump from Leimbach
 

Very interesting. In the 1:1 world, dual variable piston pumps allow similar performance when using multiple functions at once. I think this a good approach for improved speeds and minimal space requirement.

Ken

Re: Double pump from Leimbach
 

Somewhere I have some diagram's, of older 1:1 excavators with a 2 pump system. I can post if there is any interest.
Cheer's, Neil.

Re: Double pump from Leimbach
 

Thanks for the heads up. The 12V version might just do the 2 blade lift-rams and the 4-barrel ripper on my dozer build.