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I'm looking for a used OS lower unit. Doesn't matter if the skeg is broken / damaged, want to cut the skeg and run it with an offset skeg on a JAE21 OB. Only need the alu lower unit, don't need the rest of the drive line etc. Anybody has one laying around that wants to sell it? I live in the...

Are the Prather offset skegs still available?

good luck and keep us updated. I still have an JAE21OB in a box I want to built some day.

see also this topic with some info: https://www.intlwaters.com/threads/zipkits-outboard-rigger.75924

Look great Terry, what kind of needle valve is that in the last picture?

Nice work Lohring, looks realy cool. So this is jus a hollow sponson? Could you stop it half way and add foam inside it?

Tnx guys, so Dumas was also very early involved in the tunnel business.

when did Dumas start producing tunnel hulls?

Carl, page 162 is part B of the PDF: https://rclibrary.co.uk/files_titles/2382/RCM_1979_01_January_partB.pdf

Colour scheme: LINK

Carl, does it come with a pressure nipple or if not which one do you recommend?

Thanks for posting James, hadn't seen one before.

Out of curiosity, got a picture of it?

Excellent, I'll wait for the paypall invoice.

what are the benifits and for what size JAE?

Yes it working now. Nice :)

Jerry, do not see the image.

It is the same lower.

Otis, there were 2 versions of the hot shot sprint, a 45 and 67 version. The 67 version was 5 inches longer, so you probably now have the 67 version. See below picture from the Dumas catalogue:

see this topic: https://www.intlwaters.com/threads/gx2-gas-rigger-options.77005/ post #12 and #13