Scratch Building, Aircraft Design, 3D/CAD If you are starting/building a project from scratch or want to discuss design, CAD or even share 3D design images this is the place. Q&A's.

31% Fokker Dr-1 Scratch Build

Reply

Old 10-22-2011, 04:24 PM
  #1  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default 31% Fokker Dr-1 Scratch Build

31% Fokker DR-1 Scratch Build.... I have scratch built a Nieuport 17 and Nieuport 28C 1/3 scale size along with four Fokker D-7 and two Fokker D8, ( In fact I have the 1/3 D-8 listed for sale on RCU now with photos and link to the first flight video on the add) ... The Fokker D7 my favorite flys great and iseasy to land with out getting squirlie on landings. The Nieuports are also great flying airplanes... Having built many different airplanes I have never built or flown a DR-1 tri plane so I thought it would be my next project. I well be sure to install the wing tip skids since they all seem to drag a wing on landing and maybe just a slightly wider wheel stance, nothing noticeable of course.. I found the 1/4 scales a little on the small size for me, and the 1/3 scale just a little larger than what I wanted to be powered with a G-62 engine I have on hand..
I amgoing with a sturdy low maintenance, nice looking sport scale model, easy to repair if I have a flying mishap,with some scale detailing with out going to deep. First thing was to look up the Dr-1 in my scale drawingsbooks to get some construction details of the full size planes and get photos of what I want the airplane to look like.
As for plans I went with a Balsa USA 1/4 size plans and modifide the plans to what I need andenlarged it to just a little over 31% size at Kinko's which should come out to about a 87" wing span. I have bought many 1/3 size fiberglass cowls from Fiberglass specialties as well as spun aluminum cowls from Balsa USA and have modified them and have been very satisfied with both.
For now I am not going to post lot of pictures of every little detail or do a lenghty forum on this project, but it well give some one a idea of how I tackle the problem of building a airplane to a particular size choice as I proceed. Couple of possible DR-1 color schemes which I like below.
Attached Thumbnails Click image for larger version

Name:	Ge96651.jpg
Views:	44
Size:	70.8 KB
ID:	1677584   Click image for larger version

Name:	Xv65285.jpg
Views:	43
Size:	683.2 KB
ID:	1677585  
rcwarbirdbuilder is offline  
Reply With Quote
Old 10-23-2011, 04:18 AM
  #2  
lazyace
My Feedback: (126)
 
lazyace's Avatar
 
Join Date: Jul 2002
Location: buffalo, NY
Posts: 510
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

I like pic no. 1 , like the streaking , I'll be watching
lazyace is offline  
Reply With Quote
Old 10-23-2011, 05:38 AM
  #3  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

I like the streaking as well, the red is not bad either, the streaking is the one that caught my eye first and got me enterested in building, the draw back is the multiple colors are going to be lot more work, on top of that the bottom is another color!, a light blue.
rcwarbirdbuilder is offline  
Reply With Quote
Old 10-23-2011, 07:03 AM
  #4  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

I went to Kinko's and enlarged the 1/4 scale DR-I plan 1.23%, I think that was the number. They have a nice set up which handles paper up to 36" wide, and has a keypad which to punch in the percentage enlarge or decrease for the copys. The only draw back is that the cost is about $2.50 per foot copy, so it can add up quick in price. On average I end up paying over a $150 for plans which encludes buying the original to work with and than the copy price, it could cost more if you make errors and have to recopy. You can see spots whited outwhich I well modify on theconstruction. The top photo is the original 1/4 scale plan and the bottom is the enlarged, which has a fuselage lenght of 70.5" which is over 12" longer than the 1/4 scale fuselage.
Attached Thumbnails Click image for larger version

Name:	Bz79565.jpg
Views:	80
Size:	80.4 KB
ID:	1677798  
rcwarbirdbuilder is offline  
Reply With Quote
Old 10-24-2011, 02:43 PM
  #5  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

I am gettting ready to cut the parts out on a band saw, I transfered the parts outline on to construction paper and cut them out to make templates to draw the parts. On the ribs I stack about 5 sheets of balsa and stick some pins though it to hold and cut out multiple ribs on one pass.
Attached Thumbnails Click image for larger version

Name:	Wu59417.jpg
Views:	52
Size:	92.8 KB
ID:	1678379  
rcwarbirdbuilder is offline  
Reply With Quote
Old 10-25-2011, 02:35 AM
  #6  
lazyace
My Feedback: (126)
 
lazyace's Avatar
 
Join Date: Jul 2002
Location: buffalo, NY
Posts: 510
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

what are you doing for the sheet and stick size's
lazyace is offline  
Reply With Quote
Old 10-25-2011, 03:44 AM
  #7  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

For the spars and sticks for the wings I am going to use 1/4"x3/8" hardwood spars, for the fuselage I am using 3/8"x3/8" hardwood,, I well never use balsa for these items, from past experiance balsa well break easy on spots like the fuselage frame leaving a major repair problems latter, as for sheeting I have couple bundles of very hard 3/32" balsa which well work nice on the top and side of the fuselage, I well get some photos posted as I proceed.
rcwarbirdbuilder is offline  
Reply With Quote
Old 10-25-2011, 12:04 PM
  #8  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

I started with the fuselage construction first. I have a pile of printed 1/8" ply given to me by another modler friend I like using in areas which well not show, nice thing is that it isstrong almost like birch ply but light. ( this well all be sprayed green after final sanding). I cut out the two side panels for the fuselage front, set it over the plan, than epoxied the 3/8"x3/8" hardwood stripouter frame rails over it. After the two sides are completed, three square formers made from 1/8" x 11/4" ply strips are epoxied in to hold the side together, than the remaining 1/4"x3/8" balsa strips are added accross the fuselage frame.
The top ply is than glued in the front and the grooved hard wood rails for the 3/16" strut wires are installed. The firewall is made from two 1/4" hard ply laminated and epoxied to the front of the fuselage with about 1.5 degree of right offset to counter actprop torque. The cowl ring up front may look like overkill, but as I stated I want a strong built airplane for minimal maintenance after completion.
Attached Thumbnails Click image for larger version

Name:	Cz79742.jpg
Views:	76
Size:	99.0 KB
ID:	1678653  
rcwarbirdbuilder is offline  
Reply With Quote
Old 10-26-2011, 04:06 PM
  #9  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

With the basic fuselage structure completed I need to start on the center wing to go any further. The wing well be in three sections with the center section which well be glued to the fuselage. All incidence and refference well be taken from the center wing so it needs to be accuratley placed. I am using 1/8" balsa ribs, the seperation point well get 3/16" balsa ribs. The wing tube and sleeve are 1" diameter.
Attached Thumbnails Click image for larger version

Name:	Db85890.jpg
Views:	56
Size:	95.9 KB
ID:	1679151   Click image for larger version

Name:	Hf97657.jpg
Views:	52
Size:	95.8 KB
ID:	1679152  
rcwarbirdbuilder is offline  
Reply With Quote
Old 10-27-2011, 02:39 PM
  #10  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build



Here is the wing getting the front leading edge and sheeting glued on, and almost a completed center wing section which still needs the cap strips instaled on the ribs.

Attached Thumbnails Click image for larger version

Name:	Wu62312.jpg
Views:	44
Size:	101.7 KB
ID:	1679512   Click image for larger version

Name:	Ig97547.jpg
Views:	58
Size:	88.7 KB
ID:	1679513  
rcwarbirdbuilder is offline  
Reply With Quote
Old 10-28-2011, 05:20 AM
  #11  
lazyace
My Feedback: (126)
 
lazyace's Avatar
 
Join Date: Jul 2002
Location: buffalo, NY
Posts: 510
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

moveing fast looks good I'm watching close
lazyace is offline  
Reply With Quote
Old 10-30-2011, 01:30 PM
  #12  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

Making more ribs for the bottom andtop wings, stacked some 1/8" balsa, traced the outline on the top and cut it out on the band saw, next a hole saw to make the holes for the wing tube socket. I always try to cut a hair outside of the line to leave room for final sanding.
Attached Thumbnails Click image for larger version

Name:	Cz80039.jpg
Views:	51
Size:	89.3 KB
ID:	1680581  
rcwarbirdbuilder is offline  
Reply With Quote
Old 11-02-2011, 03:06 PM
  #13  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

I have the center wing construction just about completed, than alignedand glued the center section to the top of the fuselage. At the fuselage front you can see the wing cabane grooved hardwood block which is held down by screws into the two tee nuts.
Attached Thumbnails Click image for larger version

Name:	Ay74615.jpg
Views:	61
Size:	105.6 KB
ID:	1681700  
rcwarbirdbuilder is offline  
Reply With Quote
Old 11-04-2011, 04:42 PM
  #14  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

Next step is to apply the sheeting to the fuselage, thin ply works good, in this case I have some very hard thin balsa I well use.. I have not decided yet but I may use thin aluminum skin panels over the balsa which is used mainly as a form, the fuselage top front and the cockpit area in the original which I think was metal in those areas, than again plywood was used also in some.
Attached Thumbnails Click image for larger version

Name:	Pn35574.jpg
Views:	55
Size:	105.4 KB
ID:	1682391   Click image for larger version

Name:	Us55393.jpg
Views:	41
Size:	92.0 KB
ID:	1682392  
rcwarbirdbuilder is offline  
Reply With Quote
Old 11-07-2011, 05:13 PM
  #15  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

I am using 3/8"x5/8" balsa sticks to make the rear stablizer, the edges well be rounded. The stab well be removable, Iam using a 1/8" ply base in the center laminated with 1/4" balsa.
Attached Thumbnails Click image for larger version

Name:	Ca82215.jpg
Views:	37
Size:	100.8 KB
ID:	1683450   Click image for larger version

Name:	Mk25300.jpg
Views:	33
Size:	97.9 KB
ID:	1683451   Click image for larger version

Name:	Ec88791.jpg
Views:	38
Size:	89.6 KB
ID:	1683452   Click image for larger version

Name:	Rp42847.jpg
Views:	37
Size:	82.9 KB
ID:	1683453   Click image for larger version

Name:	Db85749.jpg
Views:	38
Size:	103.2 KB
ID:	1683454  
rcwarbirdbuilder is offline  
Reply With Quote
Old 11-11-2011, 05:42 PM
  #16  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

Next I am going to build the bottom wing which is the easyist of the threeto build. The first picture show the the joint ribs for the two peice wing, I am using 3/16" balsa for the ribs here with a 3/8" alingment dowl in front and behind the hole for the wing tube,, The paper in between the ribs well keep the two side from sticking together as the t.l. and l.e edges are glued,, once the ribs are glued in, a long sanding barworks good for sanding across the ribs in prep for cap strips and sheeting...Balsa blocks have been added as mounting hardpoints, only thing remaining is to glue in the wing socket and cap strips..
Attached Thumbnails Click image for larger version

Name:	Lj22777.jpg
Views:	40
Size:	91.4 KB
ID:	1685316   Click image for larger version

Name:	Ec87737.jpg
Views:	36
Size:	101.0 KB
ID:	1685317   Click image for larger version

Name:	Bz77193.jpg
Views:	40
Size:	96.3 KB
ID:	1685318  
rcwarbirdbuilder is offline  
Reply With Quote
Old 11-13-2011, 08:41 AM
  #17  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

Trying out the midle, bottom wing, front 3/6" wire cabane and stabfor fit on the fueselage.
Attached Thumbnails Click image for larger version

Name:	Ki18799.jpg
Views:	52
Size:	88.1 KB
ID:	1686039   Click image for larger version

Name:	By76322.jpg
Views:	48
Size:	95.1 KB
ID:	1686040   Click image for larger version

Name:	Vt57623.jpg
Views:	43
Size:	103.8 KB
ID:	1686041  
rcwarbirdbuilder is offline  
Reply With Quote
Old 11-20-2011, 08:08 AM
  #18  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build



Next step is to get a tentative fix on the main wing struts before moving to the top wing construction, I well post more detail close up of strut pocket and anchors to the wing.

Attached Thumbnails Click image for larger version

Name:	Ec87270.jpg
Views:	43
Size:	83.4 KB
ID:	1688938  
rcwarbirdbuilder is offline  
Reply With Quote
Old 11-24-2011, 05:55 AM
  #19  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

Third and final (top) wing for the DR-I, I started with the right wing panel build, than the center wing panel, than the left panel, as seen on the last photo I pin down the front and rear balsa sheeting down, than glue the front spar to it, glue and pin the rear spar down, than glue on the ribs. On the last photo you can see the two 3/8" wood aligment dowls in place on the rib.
Attached Thumbnails Click image for larger version

Name:	Fd92029.jpg
Views:	37
Size:	104.4 KB
ID:	1690618   Click image for larger version

Name:	Ec87309.jpg
Views:	38
Size:	99.2 KB
ID:	1690619   Click image for larger version

Name:	Ay73894.jpg
Views:	38
Size:	93.1 KB
ID:	1690620  
rcwarbirdbuilder is offline  
Reply With Quote
Old 12-04-2011, 11:23 AM
  #20  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

The top wing is in three peices, the first pic shows what the center section looks like....What a pain trying to get the three wing incidence straight,, I can see it is not going to happen, maybe close at best,, On a real airplane the hardpoints for mounting the wing has some type of threaded rod set up which can be raised or lowered,,, a model lacks this set up and the wing is prone to slight bending as it is bolted to the fuselage and struts. I well play with the incidence more but like I say it well not be perfect..( than again I have built many old biplanes and the settings on incidence and thrust are all a guese and needs to be reset after test flights) regardless if they are built to plan specs.
You can see that the wing tips have a slight under curve for illussion of airfoil shape.
I build the wings sectional for easy loading in my trailer but you can opt for one peice wing.
Attached Thumbnails Click image for larger version

Name:	Om33468.jpg
Views:	45
Size:	93.1 KB
ID:	1695138   Click image for larger version

Name:	Ki18906.jpg
Views:	37
Size:	82.0 KB
ID:	1695139  
rcwarbirdbuilder is offline  
Reply With Quote
Old 12-04-2011, 11:38 AM
  #21  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

I am making the airlons and hinging it with homemade hinges, 3 hinges per each at scale locationsfabricated from thin 1/2" wide brass. The leading edge is made from 3/8" round hardwood rod, it is attached to additional leading edge supplement made from 1/8" balsa which the ribs well glue to. I have slipped on some 13/32" Dia. 5/8" wide brass over the 3/8" dowel to act as a bearing surface. The control horn is cut from some aluminum angle.. ( This step can be simplified by eliminating the wood dowl leading edge and using conventional hinges along with store bought control horns). Note: hard to see, but on the 5th photo you can make out that the first hinge on the left is sloted in the center, wide enought for a small screw to go through and screws into the 3/8" dowl, this eliminates the slop to the left and right on the airlons, once completed the fabric covering well cover all this and well not be visible.
Attached Thumbnails Click image for larger version

Name:	Vt57400.jpg
Views:	34
Size:	83.1 KB
ID:	1695147   Click image for larger version

Name:	Rp43304.jpg
Views:	36
Size:	84.4 KB
ID:	1695148   Click image for larger version

Name:	Tr49500.jpg
Views:	35
Size:	100.2 KB
ID:	1695149   Click image for larger version

Name:	Yv65970.jpg
Views:	36
Size:	101.5 KB
ID:	1695150   Click image for larger version

Name:	Ki18035.jpg
Views:	41
Size:	98.6 KB
ID:	1695151   Click image for larger version

Name:	Ki18469.jpg
Views:	34
Size:	108.9 KB
ID:	1695152   Click image for larger version

Name:	Lj23644.jpg
Views:	33
Size:	102.7 KB
ID:	1695153   Click image for larger version

Name:	By76484.jpg
Views:	34
Size:	98.5 KB
ID:	1695154  

rcwarbirdbuilder is offline  
Reply With Quote
Old 12-05-2011, 03:18 PM
  #22  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

I am working on the elevators now, the leading edge is a 3/8" hardwood dowl laminated to a 3/8" square balsa. I am using two brass tubes slipped over the dowl as a bearing surface at the hinge points. The hinge well be made from 1/2"wide brass strip wraped around the bearing and attached to the stabalizer like on the airlons, or you can use standard hinges.
Attached Thumbnails Click image for larger version

Name:	Xv64810.jpg
Views:	37
Size:	87.9 KB
ID:	1695776  
rcwarbirdbuilder is offline  
Reply With Quote
Old 12-08-2011, 06:04 AM
  #23  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

Charlie a copy of the DR-1 plans are in the mail today, George.
rcwarbirdbuilder is offline  
Reply With Quote
Old 12-08-2011, 08:18 AM
  #24  
Props4ever
Senior Member
 
Join Date: Aug 2005
Location: Mississauga, ON, CANADA
Posts: 4,195
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build

Amazing!!!, wow it didn't took you long to make lumber into a airplane!, I love DR-1's they are my fav of WWi fighters, i can see myself getting on or building a 3rd scale monster on this historical tri-plane in near future...Subedd!!
Props4ever is offline  
Reply With Quote
Old 12-08-2011, 09:05 AM
  #25  
rcwarbirdbuilder
Thread Starter
My Feedback: (104)
 
Join Date: Feb 2002
Location: canton, MI
Posts: 1,121
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 31% Fokker Dr-1 Scratch Build



Thanks, I do have to admit my self I am a quick builder, When I decide on a project I have ideas in my mind how to go about the consruction and have a game plan, I have built many airplanes as well so everything goes into place.. Good luck on your future projects as well, george.

rcwarbirdbuilder is offline  
Reply With Quote

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy