RC Warbirds and Warplanes Discuss rc warbirds and warplanes in this forum.

Ziroli 1/6 Hellcat Build

Reply
Old 03-24-2017, 06:21 PM
  #126
DaleCS
Thread Starter
 
DaleCS's Avatar
 
Join Date: Aug 2002
Location: Novi, MI
Posts: 143
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Cockpit work

Sorry to be away - a bit stalled. Switched back to cockpit, for now and was struggling a bit with the seat belt harness - perhaps overcomplicating it by trying to stich nylon straps by hand. Decided to look over some full-scale and RC seat belt strap examples to see there were ideas on how to simplify, yet still have the belts look good. Then, discovered that the harness kit I had purchased was of the wrong design - British! Now, the Brits did have belt latch mechanism that was simpler, faster to get out of - but not fitting for a US Navy fighter.

So, gave up my struggle - found a 1/5 scale Navy example from IFlyTailies.com said "Good enough!" I'll include some pics once I've got the seat installed.

Continuing to review cockpits, and waiting for aileron hinges, decided I would add some details not included in the cockpit kit. Decided to go ahead with recreating the head/shoulder armor plate and the mounting bracket for the headrest. The armor plate is made from 0.08" styrene sheet. The headrest mount, from 0.25" brass stock. Will use 4-40 socket head bolts - 3 to mount the armor plate, 2 to mount the brass bracket to the styrene.


Looking forward to getting this painted and mounted.
Attached Thumbnails
Click image for larger version

Name:	IMG_3933.JPG
Views:	335
Size:	1.88 MB
ID:	2206904  
DaleCS is offline  
Reply With Quote
Old 03-28-2017, 06:07 PM
  #127
DaleCS
Thread Starter
 
DaleCS's Avatar
 
Join Date: Aug 2002
Location: Novi, MI
Posts: 143
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default


Head/shoulder armor plate, headrest with headrest mounting bar, in place.
Seat belt harness from IFlyTailies.

Now that I have this sorted and know how I'm going to attach the seat belts, will go ahead and paint, install the rest of the seat hardware.
Attached Thumbnails
Click image for larger version

Name:	IMG_3941.JPG
Views:	303
Size:	2.02 MB
ID:	2207495  
DaleCS is offline  
Reply With Quote
Old 04-01-2017, 04:10 PM
  #128
DaleCS
Thread Starter
 
DaleCS's Avatar
 
Join Date: Aug 2002
Location: Novi, MI
Posts: 143
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default



Remainder of seat components painted - will let paint set overnight. I really like the shade of green used here - basically, a simple olive drab. Looks really good against the interior green used in the rest of the cockpit, giving the impression that the seat came out of another bird as part of a repair. Since there was no standard for interior green, variation was common. I have a piece of hardwood dowel that will be placed under the seat - screwed to the floor pan, glued to the seat - this will support the weight of a pilot figure.

Worried about the top seat post mounting brackets remaining attached to the rear cockpit wall. I've got them pinned and plan to use a vinyl sealant to glue to the wall, as recommended by Dynamic Balsa. The sealant I plan to use is very robust - but there's not much contact area. Expect Dynamic Balsa's recommendation is fine - they've been doing this for many years. Just if it fails, the rework will be a pain - won't have the open sides which make current work much easier. Options? Pull the pins out and run a screw through the back wall into hole currently occupied by the pins.

Used a few bits from the British seat belt kit from Dynamic Balsa - painting them silver, seen in the first picture. I have 'em, might as well use 'em and these bits are generic - anchor points and belt adjusters.

Shoulder straps of seatbelt harness mounted - simply attached with a couple pan head screws and left a bit loose. Had the seat and pilot temporarily installed in order to find appropriate points to put screws.
Attached Thumbnails
Click image for larger version

Name:	IMG_3942.JPG
Views:	251
Size:	2.36 MB
ID:	2207974   Click image for larger version

Name:	IMG_3943.JPG
Views:	244
Size:	1.62 MB
ID:	2207975  

Last edited by DaleCS; 04-06-2017 at 07:25 PM. Reason: typo
DaleCS is offline  
Reply With Quote
Old 04-06-2017, 06:22 AM
  #129
DaleCS
Thread Starter
 
DaleCS's Avatar
 
Join Date: Aug 2002
Location: Novi, MI
Posts: 143
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default



Headrest mounted, shoulder and seat straps mounted, couple details on back panel painted and seat assembly in position, though not permanent. Will hold off making it permanent until further into final assembly of cockpit and plane. Found the anchor points for the lap belt that came with the IFlyTailies harness - will swap them in as they have a finer finish.



This is reference material used for choosing the two different shades of zinc chromate/interior green, from F6F Hellcat in detail and scale, Bert Kinzey.
Attached Thumbnails
Click image for larger version

Name:	IMG_3951.JPG
Views:	211
Size:	1.38 MB
ID:	2208639   Click image for larger version

Name:	IMG_3952.JPG
Views:	215
Size:	1.74 MB
ID:	2208640   Click image for larger version

Name:	IMG_3953.JPG
Views:	209
Size:	2.56 MB
ID:	2208645  

Last edited by DaleCS; 04-06-2017 at 07:27 PM.
DaleCS is offline  
Reply With Quote
Old 04-17-2017, 06:09 PM
  #130
DaleCS
Thread Starter
 
DaleCS's Avatar
 
Join Date: Aug 2002
Location: Novi, MI
Posts: 143
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default


Outboard flaps are done. Used construction technique taken from wings. Front is a D-box with shear webbing on top/bottom spars. Cap strips on top and bottom of ribs. For the top sheeting, used two layers of 1/16" balsa sheet, forming a laminate. These flaps are very stiff.

Looking forward to finishing the aileron mounts, finish sanding and then covering the these outer control surface in Solartex.
Attached Thumbnails
Click image for larger version

Name:	IMG_3968.JPG
Views:	163
Size:	1.87 MB
ID:	2210359  

Last edited by DaleCS; 04-17-2017 at 06:13 PM.
DaleCS is offline  
Reply With Quote
Old 04-21-2017, 06:16 PM
  #131
DaleCS
Thread Starter
 
DaleCS's Avatar
 
Join Date: Aug 2002
Location: Novi, MI
Posts: 143
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Chad's aileron bits arrived late last week, while I was in Nashville. Visited Stones River Battlefield, Sly's Hill, had some Nashville 'hot chicken,' heard some good country music and the Nashville Symphony - my wife has a childhood friend that plays for the symphony. Also visited Leipers Fork - nice little village in the hills that has some large RC events, but none were in progress last weekend. Maybe next time.

Gluing up the the 'yoke' (u-side) of the hinge arrangement. Chad had a pilot hole put in and a 0.050" Allen-key fits well enough to serve as an alignment pin during assembly. Will use a #50 drill and 2-56 tap on the u-side. The other, single bit (tang?), I'll start with a #43 drill (clearance fit) - if too tight, will use #41 drill.

I like these new ailerons hinges better - nothing wrong with the Tamjet hinges, but these replicate the Hellcat's better - the single tang extending back from the trailing edge will allow the clearance slot in the aileron to be 1/3 the size required of the Tamjet hinges - again, more in line with the full-scale Hellcat.

BTW - what does everyone think of changes on how pictures are managed here? Tried putting pictures within the text and pictures came in huge. Resized them with some difficulty. After saving post, the resizing was thrown out. So, removed the pics. As they are available at end of post as attachments, guess that this is the new way going forward?. And the editing window is only an inch (2.54 cm) high. Ugh!
Attached Thumbnails
Click image for larger version

Name:	IMG_4022.JPG
Views:	18
Size:	1.93 MB
ID:	2210759   Click image for larger version

Name:	IMG_4023.JPG
Views:	16
Size:	2.00 MB
ID:	2210760  

Last edited by DaleCS; 04-21-2017 at 06:29 PM.
DaleCS is offline  
Reply With Quote
Old 04-22-2017, 10:09 AM
  #132
DaleCS
Thread Starter
 
DaleCS's Avatar
 
Join Date: Aug 2002
Location: Novi, MI
Posts: 143
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Manufacturing background gave me an idea for faster processing. By running the Allen-key through 6 sets of hinges, can get one aileron set done at a time, and, this methods ensures better, squarer alignment of the pivot points. Tamjet hinges shown for comparison. The stationary part, to the left, is the portion that the aileron must be slotted to rotate around. May be able to see from this comparison the slot width difference needed between the two solutions. Will become clearer once these are mounted. Had started with the Tamjet hinges, so I'll be able to do a comparison picture.

The #50 drill and 2-56 tap worked well on the 'u' shaped part. #43 drill for through hole on 'tang' was sufficient - hinge swings smoothly, no slop.
Attached Thumbnails
Click image for larger version

Name:	IMG_4033.JPG
Views:	20
Size:	1.88 MB
ID:	2210849  

Last edited by DaleCS; 04-22-2017 at 02:47 PM. Reason: Update
DaleCS is offline  
Reply With Quote
Old 04-22-2017, 07:15 PM
  #133
DaleCS
Thread Starter
 
DaleCS's Avatar
 
Join Date: Aug 2002
Location: Novi, MI
Posts: 143
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

One of the new ailerons installed (bottom), showing comparison with original (top, black). The new hinge requires a clearance slot in the aileron much closer to scale. Need a trip to LHS - out of 2-56 pan-heads, so using a control rod on the new hinge.
Attached Thumbnails
Click image for larger version

Name:	IMG_4035.JPG
Views:	17
Size:	1.97 MB
ID:	2211094   Click image for larger version

Name:	IMG_4036.JPG
Views:	22
Size:	2.14 MB
ID:	2211095  
DaleCS is offline  
Reply With Quote
Old 05-27-2017, 08:10 AM
  #134
DaleCS
Thread Starter
 
DaleCS's Avatar
 
Join Date: Aug 2002
Location: Novi, MI
Posts: 143
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Chad's hinges, installed on ailerons. Build slowed by family events.

The ailerons are turning out to be my most complicated subassembly, so far. Still need to install sheer webs, cut/install ply square for control horn mount, mount control horn, install lead weight within leading edge (anti-flutter), top sheet and top cap strips, shape trailing edge and complete trim tab. Times two. And, still need to mount to wing.
Attached Thumbnails
Click image for larger version

Name:	IMG_4071.JPG
Views:	20
Size:	1.89 MB
ID:	2217204   Click image for larger version

Name:	IMG_4072.JPG
Views:	31
Size:	1.89 MB
ID:	2217205  

Last edited by DaleCS; 05-27-2017 at 08:28 AM.
DaleCS is offline  
Reply With Quote
Old 05-27-2017, 05:06 PM
  #135
PLANE JIM
 
Join Date: Dec 2002
Location: AT THE AIRPORT
Posts: 1,959
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

My Byron is getting close for the maiden-your work is outstanding
Attached Thumbnails
Click image for larger version

Name:	hellcat.JPG
Views:	25
Size:	134.8 KB
ID:	2217339   Click image for larger version

Name:	hellcat1.JPG
Views:	33
Size:	112.7 KB
ID:	2217340  
PLANE JIM is offline  
Reply With Quote
Old 05-27-2017, 08:29 PM
  #136
DaleCS
Thread Starter
 
DaleCS's Avatar
 
Join Date: Aug 2002
Location: Novi, MI
Posts: 143
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Looks great, Jim. You'll enjoy that plane, I'm sure - still miss my Byron.
DaleCS is offline  
Reply With Quote
Old 06-01-2017, 06:20 PM
  #137
DaleCS
Thread Starter
 
DaleCS's Avatar
 
Join Date: Aug 2002
Location: Novi, MI
Posts: 143
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Making aileron progress. Sheer webs are in, counterweights in, control horns in, and one aileron forward top-sheet in place. Starting to look like they are close to completion...finally! The forward top-sheeting, I'm doing in two layers to avoid splits. Also, though the counterweights are epoxied in place, I glued a wood hold down over the top of them - just in case they loosen up, I don't want them flopping around, moving backward, ruining their purpose for being there. And if they do come loose and my hold down keeps them in place, I may not have to tear them open....belt and suspenders.
Attached Thumbnails
Click image for larger version

Name:	IMG_4087.JPG
Views:	18
Size:	2.29 MB
ID:	2218382   Click image for larger version

Name:	IMG_4088.JPG
Views:	23
Size:	1.84 MB
ID:	2218383  
DaleCS is offline  
Reply With Quote
Old 06-03-2017, 11:57 AM
  #138
Bob Paris
 
Join Date: Nov 2002
Location: Lahaina, HI
Posts: 1,837
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Hay DaleCS,
I have been watching your F6F build and I love your work. The Hellcat never has received her due...and you are doing good...really good. Keep it up...and I love your pictures.
Soft Landings Always,
Bobby
Bob Paris is offline  
Reply With Quote
Old 06-03-2017, 08:07 PM
  #139
DaleCS
Thread Starter
 
DaleCS's Avatar
 
Join Date: Aug 2002
Location: Novi, MI
Posts: 143
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Bob - thank you so much for your following and kind words. Was in Maui several years ago - honeymoon - 11 days, 4 islands - just in case we didn't make it back, saw as much as we could. Hope to make it back there for our 30th anniversary. Almost heaven on Earth - if the snow skiing were better, would be perfection! Tried looking up RC clubs on Maui - if you're at 2701 Mokulele Highway, that's one nice site.

I believe the Hellcat's lack of notoriety is one of the main reasons why I like it so much - good looking, if not distinctive, just a workhorse that got the job done extremely well - it's specs and stats speak volumes.

Top sheeting is done on both ailerons. I'll probably will not post for awhile - next steps involve top stripping the ailerons and then completing mount/fit/sanding of ailerons and flaps - won't be anything exciting to show until the bits are all in place on the wings. Then, I'll cover the ailerons and outboard flaps in Solartex.
Attached Thumbnails
Click image for larger version

Name:	IMG_4103.JPG
Views:	23
Size:	1.93 MB
ID:	2218682  

Last edited by DaleCS; 06-03-2017 at 08:15 PM.
DaleCS is offline  
Reply With Quote
Old 06-17-2017, 04:23 PM
  #140
DaleCS
Thread Starter
 
DaleCS's Avatar
 
Join Date: Aug 2002
Location: Novi, MI
Posts: 143
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Right, inboard and outboard flaps fitted with 'flap pin' fitted. I think I'll be satisfied using the pin rather than another servo - even at full deployment, the separation between the flaps is not too great and the pin not too noticeable. Byron Hellcat had this and it functioned well. Print called for 5/32" rod for pin material. Byron used a brass tube - lighter and functioned just fine, so used it again, here.

Was a little bit a pain to fit the pin - since I didn't follow print and custom built the outboard flap with 'built-up/fabric covered' construction, the pin hole in each of the laser cut ribs didn't line up well - the pin hole in the outer flap didn't line up with its inboard counterpart by half a diameter. Would like to say I built something, a nice jig or something - instead, just hands and eyes, carefully creating new hole location and then drilling into its mounting block behind the rib. End result is darn near perfect.

Now that the flaps are fitted, can fit the aileron, its hinges and finish sand - then repeat for left side!
Attached Thumbnails
Click image for larger version

Name:	IMG_4112.JPG
Views:	15
Size:	2.09 MB
ID:	2220534   Click image for larger version

Name:	IMG_4113.JPG
Views:	16
Size:	2.32 MB
ID:	2220535  

Last edited by DaleCS; 06-19-2017 at 04:30 PM.
DaleCS is offline  
Reply With Quote
Old 06-17-2017, 04:39 PM
  #141
DaleCS
Thread Starter
 
DaleCS's Avatar
 
Join Date: Aug 2002
Location: Novi, MI
Posts: 143
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

One question, for anyone that wants to answer: Wing tube mounting in outer wing panel - glue it in or use a sleeve?

I have carbon fiber wing tubes, with sleeves epoxied in place in inboard wing panels. Drawings show wing tube glued into outer wing panel, no sleeves.

I know this will work, so why ask the question? Breaking a carbon tube - whether minor or major damage, cracked carbon can mean the need to replace the whole tube - if epoxied in place, this becomes a major repair involving refinishing, paint.....as I type this, I think I'm talking myself into installing sleeves in the outer wing panel. If I chip, crack or other damage a tube, its a simple repair.

Any thoughts?

Last edited by DaleCS; 06-17-2017 at 04:42 PM.
DaleCS is offline  
Reply With Quote
Old 06-17-2017, 10:04 PM
  #142
Chad Veich
 
Join Date: Dec 2001
Location: Litchfield Park, AZ
Posts: 7,385
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Sleeves for sure in my opinion.
Chad Veich is offline  
Reply With Quote
Old 06-19-2017, 04:28 PM
  #143
DaleCS
Thread Starter
 
DaleCS's Avatar
 
Join Date: Aug 2002
Location: Novi, MI
Posts: 143
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Thumbs up

Quote:
Originally Posted by Chad Veich View Post
Sleeves for sure in my opinion.
Will order another set.
DaleCS is offline  
Reply With Quote
Reply


Thread Tools
Search this Thread
Display Modes

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



All times are GMT -8. The time now is 09:35 PM.