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Cowling fixings

How to line 'em up

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Tim Mackey20/05/2009 09:25:30
20920 forum posts
304 photos
15 articles
Pinched from the Hangar 9 Camel instructions
Fit the mounting blocks on the firewall first and drill the screw holes, or drill the holes in the fuselage sides depending on how the cowl is to be fixed. Cut 3 or 4 long strips of card ( depending on number of mounting places ) and tape them securley to the fuselage behind the rear of where the cowl will be when fitted - projecting forward and over the mounting spots. Mark the fixing hole positions on the card strips, then slip the cowl into place UNDER the card strips, align it all up nicely, and then mark through the card holes on to the cowl the exact place where to drill for the fixing screws and bingo!
Stephen Grigg20/05/2009 10:01:32
8691 forum posts
1128 photos
See Timbo youve taught me something today and made me happy.A simple idea when someone else tells you but saves loads of fiddling around thanks for passing the info on.
Garry Pollard20/05/2009 11:28:03
1091 forum posts
Brilliant thanks a lot
Klippy20/05/2009 11:55:34
753 forum posts
13 photos
How simple is that, wonderful!
Tim Mackey20/05/2009 12:09:37
20920 forum posts
304 photos
15 articles
Yep its a cracker huh! As I say, not mine originally but Hangar 9 probably pinched it from someone too. They do say there is no such thing as an original idea.
Heres a picture to illustrate things - scanned from the manual, but if you click for full size shows up pretty well.

Edited By Timbo - Moderator on 20/05/2009 12:19:42

winchweight20/05/2009 12:10:43
2516 forum posts
67 photos
Pretty much what I do except I just use strips of masking tape. It also works for cutting exhaust hole, needle valve holes etc.
Tim Mackey20/05/2009 12:20:20
20920 forum posts
304 photos
15 articles
Surely the masking tape is just too "floppy" - or do you mean something else?
winchweight20/05/2009 12:29:58
2516 forum posts
67 photos
Nope, just masking tape. I tape it to the fuselage then run it out along the engine and mark off the exhaust position etc. I then peel it back partway and fit the cowl before running it back over the outside of the cowl. I then leave it on the cowl and remove from the fuselage before removing the cowl to cut and drill.
Pete B - Moderator21/05/2009 21:38:35
7641 forum posts
733 photos
A 'Tried and Tested' tip, ta! Just mounted my E-flite Cub 25 cowl this way and very pleased with result
Alan B22/05/2009 08:54:57
680 forum posts
92 photos
Excellent! - I also like the bit about slicing fuel tubing for anti vibration washers for the retaining screws.  Never thought of that one!
Myron Beaumont22/05/2009 09:09:31
5797 forum posts
51 photos
Have used servo mounting grommets & screws for doing just that  ..Proper job!
Hamish22/05/2009 09:26:41
642 forum posts
47 photos
Great idea as I am at that stage with my Little Lewis (Miss Lizzy) and this will be ideal.
Just to add to this I have an adaptor that the cowl sits on which larger in diameter than the fuz.  Tried bits of balsa on the mounts and they kept falling off.  I intend to fit fuel tube spacers once I get it centralized.  Ended up putting small blocks of sponge which keeps it in place and I can adjust easily.
Thanks again
Steve Hargreaves - Moderator22/05/2009 09:35:16
6755 forum posts
197 photos
I use those transparent document folders......the sort that have 2 sides closed & two open. I cut them into two approx A4 sheets, tape 'em onto the fuz...draw around the engine/exhaust/needle/whatever with a suitable felt tip pen (the ones used to mark CDs & DVDs are good). cut out the shapes from the plastic sheet as reqd. Remove the engine, refit the cowl & fold the clear plastic back over the cowl....draw the shape onto the cowl & fire up the Dremel!!!!
I have to say I've never been completely happy with any cowls I've cut...I always have the nagging doubt it could be done better if only I knew how......!!!!
Of course you could go electrc & not have any hassle cutting the cowl out but wheres the fun in that!!!!!
Phil Claridge23/05/2009 07:07:22
1924 forum posts
32 photos
fire up the dremel? switching on usually works best steve (lasts longer too)

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