Questions and Answers If you have general RC questions or answers discuss it here.

Ring Cowl?

Old 02-12-2007, 09:41 AM
Charlie P.
Thread Starter
Charlie P.'s Avatar
Join Date: Feb 2003
Location: Port Crane, NY
Posts: 5,088
Likes: 0
Received 0 Likes on 0 Posts
Default Ring Cowl?

I am bashing up a 1/5 +/- semi-scale Curtiss F6C-4 and ordered a fiberglass ring cowl (Fiberglass Specialties). I've never attached a ring cowl before. This has no obvious attachment to the fuselage from the images I have, and I'm not familiar with how original ring cowls were attached. At this point I figure on adding four dummy pistons (the "real" plane had a 9-cylinder radial) with attachment points on the tips and bolt them into attachment blocks glassed into the cowl lining.

Anyone have tried and true or better ideas? I assume there was some kind of framework on the full scale to position the ring.
Attached Thumbnails Click image for larger version

Name:	Ki17932.jpg
Views:	6
Size:	24.6 KB
ID:	619560   Click image for larger version

Name:	Xt60076.jpg
Views:	3
Size:	50.2 KB
ID:	619561  
Old 02-12-2007, 10:27 AM
Senior Member
My Feedback: (4)
MinnFlyer's Avatar
Join Date: Apr 2002
Location: Willmar, MN
Posts: 28,519
Likes: 0
Received 5 Likes on 5 Posts
Default RE: Ring Cowl?

I would bend up a few brackets that could mount the inside of the cowl to the firewall
Attached Thumbnails Click image for larger version

Name:	Nl29572.jpg
Views:	5
Size:	48.1 KB
ID:	619570  
Old 02-12-2007, 10:27 AM
Join Date: Oct 2002
Location: San Diego, CA
Posts: 2,670
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Ring Cowl?

This is the way the real Jungmeister did it. I cannot document the ring at the fusealge, it may have been fastened to the engine, so that everything would vibrate together.

In my research into a Kinner engine, one of the technical drawings showed that a rocker arm cover bolt was a long stud or standoff, on a number of the cylinders; presumably to bolt the cowl to.

If this is going to be a internal combustion engine airplane, you would probably be better off with a system like MinFlyer suggested. The vibration will likely tear your dummy engine up.

Attached Thumbnails Click image for larger version

Name:	Us52990.jpg
Views:	6
Size:	37.5 KB
ID:	619571   Click image for larger version

Name:	Bw72700.jpg
Views:	5
Size:	63.0 KB
ID:	619572  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.