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Dummy Radial engine - 9/3/2006 3:13 AM   
RS-cap



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From: North Liberty, IA, USA
Status: offline 		who makes a good scale dummy radial engine for a 1/4 scale Balsa usa Sopwith Pup, I'm using a G-26 engine. I've looked on the net and when I find something they don't even provide pictures. I would appreciate any help. thanks

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RE: Dummy Radial engine - 5/21/2007 8:19 AM   
Virg.



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From: Kill Devil Hills, NC, USA
Status: offline 		RS-cap I'm not sure what dia. engine you need for a 1/4 scale Sopwith Pup, but you might want to check out DARE HOBBY's offering of WW1 ROTARY engines. Their kit makes any (one) of three different dummy engines. They added this kit along with some RADIAL dummies and overlooked the fact that WW1 engines were NOT RADIALS at all, but were ROTARIES that rotated with the prop! Terry, of Dare Hobby said that the webmaster will make this correction, but hasn't done so (about 2-weeks already).

These make up into 3 3/4" - 4" engines depending on the add-ons to match the appropriate engine. You could mount it BETWEEN THE MOTOR AND THE PROP so it will spin like the full-scale!

Here's the site:

http://www.darehobby.com/images/accessories/wwiradialengines.jpg



< Message edited by Virg. -- 5/21/2007 8:22 AM >

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RE: Dummy Radial engine - 7/27/2007 3:44 AM   
old git


 

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From: BelvedereKent, UNITED KINGDOM
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quote:

ORIGINAL: Virg.

These make up into 3 3/4" - 4" engines depending on the add-ons to match the appropriate engine. You could mount it BETWEEN THE MOTOR AND THE PROP so it will spin like the full-scale!

Here's the site:

http://www.darehobby.com/images/accessories/wwiradialengines.jpg





I have seen a rotary engine on a 1/4 scale model, it was built up from balsa etc. It ran free on bearings, NOT fixed to the driveshaft. The friction of the bearings caused the rotation. One reason to mount the motor free was to isolate it from the power impulses from the big Zenoah. I saw it a couple of years ago at the Queens Flight Airfield Warbirds event but my memory is such that I cannot remember the aircraft type other than the fact that it was a WW1 pusher with the Zenoah mounted well forward in the pod and a driveshaft to the prop and scale rotary engine. It looked very convincing both on the ground and in flight.



old git - - - - - - - aka John L.

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RE: Dummy Radial engine - 7/27/2007 4:09 PM   
FokkerAce


 

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From: Cortland, NY, USA
Status: online 		Williams bros parts, Mick Reeves Models in England, Arizona Modelcrafters.

and yes, it is a Rotary, not a Radial.

or, for the price of a used car, you could get a real rotary [hahaha....great pictures, tho]
http://www.replicaengines.com/products/gnome.htm

http://www.rjdunn.co.uk/tony/aero/thumb0001.htm

http://www.powerhousemuseum.com/collection/database/?irn=206763

does this help?

FA

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