Hawker Sea Fury - Scratch! - Page 5 - RCCanada - Canada Radio Controlled Hobby Forum
RCCanada - Canada's Radio Control Hobby Forum
Scale Aircraft Discuss Scale Aircraft.

Reply
 
Thread Tools Display Modes
Old 03-02-2016, 10:51 PM   #41
Cougar429
Level 3 Supporter
★ Site Supporter ★
 
Cougar429's Avatar
 
I am: Gary L
Join Date: Aug 2008
Location: Tecumseh, Ontario

Feedback: 72 / 100%
Posts: 5,305
Total Props: 30
Re: Hawker Sea Fury - Scratch!


       Remove this ad - become a site supporter!
I used that C/F tape in Rare Bear. Great stuff.
__________________
I know there's money in aviation........I put it there!
Cougar429 is offline   Quick reply to this message.

Sponsored Links - Subscribe to remove this ad.
Old 03-20-2016, 05:10 PM   #42
Warbird_ace
RCC Expert Contributor
 
I am: Adam S
Join Date: Mar 2003
Location: Barrie area, ON

Feedback: 3 / 100%
Posts: 845
Total Props: 1
Little bit more progress. Yes grammar I know.....
Haven't had much time to do much, I am starting a new job tomorrow (massive mental relief) so I've been trading shifts all over the place to accommodate my 9 weeks orientation.
However, I've still managed to log 10 mins here and there setting c/f tape and making spars. Once I got the wing all straightened around, I dropped all the spars in. Rear spars were installed individually and then wrapped with c/f tape after the fact, that way there would be no guessing with angles. Worked out well,they're still going to get shear webs once they're sanded down. Also true to scratch build fashion, I didn't actually pre cut the spar slots. Ribs placed down and they were transposed vertically from the plan with a speed square. Quick, easy, and for me they were accurate. Oh and this whole wing is being built upside down. Rather than mess around with measuring building tabs out it was much easier to just leave a flat section on the top of each rib.
I also installed the retract rails and trial fitted the units. It's a bit of a trick to weasel them into place owing to the proximity of the front bottom spar, but man, do they ever look sweet. Especially with the oleo kinda sitting in place.

Next steps happening now: the tops of W5 are really thin and provide poor contact points for the spars. Simple little slotted pieces being glued in right now should alleviate that, combined with the shear webs (these ones will be thicker balsa) should be more than enough.

Flap spars are going in next, wheel wells will be built in, shear webs all installed, and spars brought to shape. Outer panels will get their respective flap spars, wire tubes, ailerons, servo linkages, shear webs, etc.



Sorry for the rambling, making a list of tasks here actually helps me set a course of action.
Cheers!
Attached Thumbnails
Click image for larger version

Name:	IMAG1054_1458508163900.jpg
Views:	56
Size:	147.3 KB
ID:	884458   Click image for larger version

Name:	IMAG1055_1458508187037.jpg
Views:	61
Size:	179.3 KB
ID:	884466   Click image for larger version

Name:	IMAG1063_1458508204927.jpg
Views:	61
Size:	166.9 KB
ID:	884474  
Warbird_ace is offline   Quick reply to this message.
Old 04-28-2016, 08:52 PM   #43
Warbird_ace
RCC Expert Contributor
 
I am: Adam S
Join Date: Mar 2003
Location: Barrie area, ON

Feedback: 3 / 100%
Posts: 845
Total Props: 1
Re: Hawker Sea Fury - Scratch!

Quick update:
Spar reinforcements are complete and solid.
Shear webs are in, I'm in the process of sanding down the spars. I purposely used bigger stock so i could sand them down to match contour of the ribs.
I'm toying with different ideas of how to attach the outer panels to the centre panel. The latest and greatest idea which would also allow me to ensure proper angles is to use a fiberglass section between the joints. Since it will be a permanent joint, I think the epoxy/glass mixture will sufficiently fill any gaps left to ensure the proper dihedral.
I'll joint the tops with CF tape and move on
__________________
Adam S.
Warbird_ace is offline   Quick reply to this message.
Old 04-29-2016, 10:30 AM   #44
Cougar429
Level 3 Supporter
★ Site Supporter ★
 
Cougar429's Avatar
 
I am: Gary L
Join Date: Aug 2008
Location: Tecumseh, Ontario

Feedback: 72 / 100%
Posts: 5,305
Total Props: 30
Re: Hawker Sea Fury - Scratch!

Do those outer panels join to the center with spar plates? If so an idea may be to fab them with my layering method. I build mine from thinner plies layered with glass between to end up with a piece of original thickness. Virtually indestructible and usually the same weight of an equivalent wood joiner.
__________________
I know there's money in aviation........I put it there!
Cougar429 is offline   Quick reply to this message.
Old 04-29-2016, 11:57 AM   #45
Warbird_ace
RCC Expert Contributor
 
I am: Adam S
Join Date: Mar 2003
Location: Barrie area, ON

Feedback: 3 / 100%
Posts: 845
Total Props: 1
Re: Hawker Sea Fury - Scratch!

The original plans do call for a spar plate, but the original spars were also straight in line with each other. The new modified spar placement puts a couple compound angles into the mix that a wood plate wouldn't work. Never thought of pre-making a glass one. I might be able to fab up some forming blocks to make them.
My original plan was to do something similar with a piece of CF tape wedged in a gap between spar and rib, but that was contingent on the panels being already attached.
__________________
Adam S.
Warbird_ace is offline   Quick reply to this message.
Old 04-29-2016, 12:19 PM   #46
Cougar429
Level 3 Supporter
★ Site Supporter ★
 
Cougar429's Avatar
 
I am: Gary L
Join Date: Aug 2008
Location: Tecumseh, Ontario

Feedback: 72 / 100%
Posts: 5,305
Total Props: 30
Re: Hawker Sea Fury - Scratch!

The Top Flite Texan has the same problem and the kit-built had a joiner with several different laminations to give the angles required. These were all bonded to one central ply plate, though, so it may work for your app.

The ARF used pockets within each panel with a ply joiner plate and alignment pin at the trailing edge.

If you PM me your Email I can forward the manual in .pdf format.
__________________
I know there's money in aviation........I put it there!
Cougar429 is offline   Quick reply to this message.
Old 04-30-2016, 01:01 PM   #47
Warbird_ace
RCC Expert Contributor
 
I am: Adam S
Join Date: Mar 2003
Location: Barrie area, ON

Feedback: 3 / 100%
Posts: 845
Total Props: 1
Re: Hawker Sea Fury - Scratch!

Hmm, that could work, check PM.
__________________
Adam S.
Warbird_ace is offline   Quick reply to this message.
Old 07-12-2016, 10:41 PM   #48
Warbird_ace
RCC Expert Contributor
 
I am: Adam S
Join Date: Mar 2003
Location: Barrie area, ON

Feedback: 3 / 100%
Posts: 845
Total Props: 1
Re: Hawker Sea Fury - Scratch!

Well, its been about 10 weeks since I've done anything with this project, and tonight I finally committed an hour to making a big leap - joining the wing sections!
After hours of researching, sketching, drawing, thinking, day dreaming, I finally settled on a method that I feel will work for this project.
Gary - the manual was an invaluable resource and taught me a lot (basically that I should have planned this more at the design stage than the commitment stage!!!) It will remain in my library of construction techniques for future builds. (AKA 80" electric PC-12)

My creative solution involves several steps. In the end, the solution (in theory) will be lighter, and involved pretty much zero math.

Each panel joint consists of a fibreglass sandwich. I'm not sure of the weight, but its got some good size weave on it, and I had it laying around from when I attempted to build this bird 16 years ago. My justifications is that the thickness of the cloth would allow me the fractional mm of play to get the dihedrals (or is it tri-hedral???) perfectly aligned at the tips, and to fill in the gaps of the joints, essentially binding these 2 pieces I mitred at 2.5 degrees each into a giant solid rib.

Now since I like to over kill things, I'm planning on running a strip of CF tape along each of the spar joints. This only after I use the CF tape and cap the top end of the rib sandwich, where its <1mm thick. This should not only distribute the load across the entire rib, but will add yet another reinforcement point on this rib sandwich. All at the cost of minuscule weight gain.

In the unfortunate event of a crash, I fully expect this joint to be the sole intact survivor.

Once the epoxy sets, I'll be trimming off the overhang and completing the above mentioned steps, then setting off with final sanding down of the ribs, and drilling the mounting blocks for the retracts. After that, time to skin!
Attached Thumbnails
Click image for larger version

Name:	IMAG1236[1].jpg
Views:	30
Size:	507.4 KB
ID:	1002305   Click image for larger version

Name:	IMAG1237[1].jpg
Views:	37
Size:	500.6 KB
ID:	1002313   Click image for larger version

Name:	IMAG1238[1].jpg
Views:	31
Size:	573.4 KB
ID:	1002321   Click image for larger version

Name:	IMAG1239[1].jpg
Views:	31
Size:	480.2 KB
ID:	1002329  

Click image for larger version

Name:	IMAG1240[1].jpg
Views:	29
Size:	427.7 KB
ID:	1002369   Click image for larger version

Name:	IMAG1241[1].jpg
Views:	23
Size:	490.0 KB
ID:	1002377   Click image for larger version

Name:	IMAG1242[1].jpg
Views:	37
Size:	470.2 KB
ID:	1002385  
__________________
Adam S.
Warbird_ace is offline   Quick reply to this message.
Old 07-13-2016, 01:09 PM   #49
Warbird_ace
RCC Expert Contributor
 
I am: Adam S
Join Date: Mar 2003
Location: Barrie area, ON

Feedback: 3 / 100%
Posts: 845
Total Props: 1
Re: Hawker Sea Fury - Scratch!

Quick update - everything dried nice and solid, and the joint is stronger than I imagined it would ever be, I might not cap the sandwich after all. There's more flex along other ribs that there is over this joint.
Excess glass was cut off, now its just the tedious process of removing the excess epoxy that dried along the joints.
__________________
Adam S.
Warbird_ace is offline   Quick reply to this message.
Old 07-13-2016, 02:37 PM   #50
Cougar429
Level 3 Supporter
★ Site Supporter ★
 
Cougar429's Avatar
 
I am: Gary L
Join Date: Aug 2008
Location: Tecumseh, Ontario

Feedback: 72 / 100%
Posts: 5,305
Total Props: 30
Re: Hawker Sea Fury - Scratch!

I would still recommend capping the spars. If you think about it, unless there are doublers or gussets to gain from the rib bonds, the ultimate transfer strength will be only the area of the spars themselves butted end on end. This is the least favorable type of joint and one with the least reserve before failure. It may seem capable, but you can easily exceed 2 or more G's in a tight turn. In fact, rule-of-thumb for a 60 degree bank turn is 2 G's to maintain altitude and our models can far exceed that.

In full size wood spars are bonded together in a scarf joint that transfers loads over a much longer area. The taper cut allows the bonding agent access to far more fibers within the wood.
__________________
I know there's money in aviation........I put it there!
Cougar429 is offline   Quick reply to this message.
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the RCCanada - Canada Radio Controlled Hobby Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Member names may only be composed of alpha-numeric characters. (A-Z and 0-9)

!!ATTENTION ADVERTISERS!! If you intend on advertising anything on this forum, whatsoever, you are required to first contact us here . Additionally, we do NOT allow BUSINESS NAMES unless you are an Authorized Vendor. If you own a business, and want to do sales on this site via posting or private message, you will need to follow the rules. Shops, Stores, Distributors, Group Buys without being authorized will see your account terminated.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Your Name
Your first name and last initial is required if you plan on using the forum.
Location
Which city & province you live in. This is mandatory for classified listings.
Radio of choice?
Which radio is your current favorite to use?
Number of RC Vehicles?
How many boats, cars, planes do you own?

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
vBulletin Message

Thread Tools
Display Modes

Forum Jump


All times are GMT -5. The time now is 03:09 AM.


vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.