Subject: 4:1 Rubican Transfer case.
From: paul lamar
Date: 11/24/2016, 11:56 AM
To: A10-Me-Earthlink




Heads up gang!

We have a request for a 4:1 reduction drive to fit a 250 hp. Airboat engine
utilizing the gear set as installed in a Rubican transfer case.

We are in need of information that describes the gear sets, case
manufacture, specific model number, and drawings, etc.

If you have ANY information or can direct our attention to a source please
let us know as this might lead to an adaptable gear box for a remote
pilotless aircraft involving a DARPA contract.

We will be pleased to keep one and all informed of our progress in this
matter.

Happy thanksgiving!

Milo D. Burroughs,


Here  is what I have so far. I think you woll need to buy one to get the
dimensions.

Paul Lamar

The stock NP231 transfer case is 2.72:1.  The NP241OR is the version shipped
in the Wrangler Rubicon, and it has the 4:1 low.  Here's an article over at
Novak on the one you're looking for.

http://www.novak-adapt.com/knowledge/transfer-cases/np241or/

Stock NP231s are easy and cheap ($100) to find.  NP241ORs (with the 4:1
planetaries) are a lot pricier, although occasionally people swap them out
for an Atlas and sell them.  They tend to run about 10 times as much on
Craigslist. I've looked around on the web and not yet found an NP241OR
planetary set for sale separately.  They're probably available from
Chrysler.

Dave Klingler


Thanks a million Dave!
Milo Burroughs


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