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View Full Version : Prop required for Napier Lion engine


racer2_uk
02-13-2008, 02:03 PM
Hi everyone, new here, I hope this is the right place for this, I am looking for a shortened prop or a test club suitable for a ground run engine, my carrier has the following dimensions.

centre bore 3"
8 clamp bolts of 5/8" on 71/4" PCD
hub thickness 7"

Clockwise rotation viewed from front ( RHT ) ?

All idea's considered.

Thanks

Andy

bhunt
03-05-2008, 01:43 PM
Andy.
The Napier Lion is really a interesting engine. As I understand the Napier Lion ranged from 450 to 1000hp. Time permitting I can make you a sutible test club and wouldn't charge you and arm and leg.
If possible could you post a picture of your engine. I think the group would love to see it with its three rows of 4 cylinders. I believe this engine powered the Supermarine S.5 Schnider trophy racer.

Bob

Dave
03-06-2008, 07:55 AM
Clockwise rotation viewed from front ( RHT ) ?



That would make it left hand rotation.

racer2_uk
03-06-2008, 08:44 AM
Hi All,

Dave thanks for setting me straight on the rotation/handing question.

Bob, the Lion was quoted at 400 to 1350hp depending on mark number and age, the engineering is beautiful.
I am very interested in a test club, using a full size prop has many problems on a ground running engine as you can imagine, please let me know a little more about your prop's.


The Lion engine under restoration.

http://i70.photobucket.com/albums/i101/racer2_uk/NapierLion513831stassy20.jpg

http://i70.photobucket.com/albums/i101/racer2_uk/NapierLion513831stassy23.jpg

My Alvis Leonides running after 30 years.

http://i70.photobucket.com/albums/i101/racer2_uk/Leonidesrunning003.jpg

Andy

bhunt
03-07-2008, 12:12 AM
Andy.
Your restoration of the Napier is coming along good. Great pictures. Very interesting to us mechanics. You wouldn't happen to have a Supermarine to go with it? (Just kidding)
I'll send you a private message with some pictures and my e-mail, so we can talk direct instead of on the forum about the test club.
Thanks

Bob