20b OMP vs 13b-rew OMP

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Old Feb 22, 2014 | 09:39 PM
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From: chch
20b OMP vs 13b-rew OMP

Hi guys is anyone able to take a photo of a 13b-rew OMP mounting flange so I can compare it to my 20b one.

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basically I just want to know that the mounting holes line up and the drive for the OMP line up.

cheers
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Old Mar 30, 2014 | 11:28 AM
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20B on the left, FD on the right

The FD and 20B OMP appear to be interchangeable from shelf testing.
Attached Thumbnails 20b OMP vs 13b-rew OMP-image-2520850002.jpg  
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Old Mar 31, 2014 | 03:42 AM
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From: chch
Awesome stuff man, thanks
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Old Apr 9, 2014 | 07:30 AM
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What is the reason for the question? The 13B one from memory doesn't have all the outlet points and also. I was working on my OMP last week as I am modding it to manual. Probably fixed for the moment but intend to try and make it adjustable down the line. The 13B other than the blanked holes looked identical inside and out.
I was hoping to use and early mechanical pump but the mounting flange and gallery shape are completely different. Not sure if there is more than one option there?
Have you got an ECU that will control the electric one then?
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Old Apr 9, 2014 | 01:54 PM
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From: chch
Reason being is I was looking to see if the rotary aviation/Sohn 13b electric OMP adaptor would bolt up, so that the OMP no longer runs engine but can instead run 2 stroke, on all accounts it appears that the 20b OMP can be retained and the rotary aviation 13b electric adaptor(your make your own) can be used.

There are a few ECU's out there now that can capable of running the electric OMP's.
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