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

CMP BF109F BUILDING THREAD

Reply
Old 12-04-2009, 10:42 PM
  #1426
kahloq
 
kahloq's Avatar
 
Join Date: Jan 2006
Location: Fort Collins, CO
Posts: 4,295
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

Rhom air?.
kahloq is offline  
Reply With Quote
Old 12-05-2009, 12:29 AM
  #1427
SCALECRAFT
 
SCALECRAFT's Avatar
 
Join Date: Jan 2002
Location: MONTEBELLO, CA
Posts: 2,649
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

I thought I had seen the link on the struts in the winter season when the wheel pants were removed.

I'll check the 109lair.

Steve
SCALECRAFT is offline  
Reply With Quote
Old 12-05-2009, 12:36 AM
  #1428
paladin
 
Join Date: Feb 2002
Location: Vestal, NY
Posts: 2,814
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

the sissors are hidden by th wheel. this is for the g but out of time. total doc size is 22meg so i can't post it for the enjoyment of all.

Joe
Attached Files
File Type: pdf
Ki18079.pdf (74.4 KB, 11 views)
paladin is offline  
Reply With Quote
Old 12-05-2009, 12:43 AM
  #1429
SCALECRAFT
 
SCALECRAFT's Avatar
 
Join Date: Jan 2002
Location: MONTEBELLO, CA
Posts: 2,649
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

According to the book " Messerschmitt BF 109 F,G,& K Series: An Illustrated Study by Jochen Prien and Peter Rodeike",a winter pic without the pants shows the links are there, small but there.

The links are hidden by the tire and wheel pants.

Steve
SCALECRAFT is offline  
Reply With Quote
Old 12-05-2009, 12:45 AM
  #1430
SCALECRAFT
 
SCALECRAFT's Avatar
 
Join Date: Jan 2002
Location: MONTEBELLO, CA
Posts: 2,649
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

paladin, I think you win that one with that diagram.

Steve
SCALECRAFT is offline  
Reply With Quote
Old 12-05-2009, 08:44 AM
  #1431
LDM
 
Join Date: May 2003
Location: Denver, PA
Posts: 9,283
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

wow great info Joe, had me fooled , never viewed links on all the models I searched on google
LDM is offline  
Reply With Quote
Old 12-12-2009, 04:47 PM
  #1432
paladin
 
Join Date: Feb 2002
Location: Vestal, NY
Posts: 2,814
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

Looking for the angle of the struts and the best I’ve been able to get is this far is the attachment below. It tells me that a scale wheel base will be 15inches. I need to see how this looks on the model next. i have the 109F doc but it is to large for here so i attached the g.

Joe
Attached Files
File Type: pdf
Ec88548.pdf (258.0 KB, 12 views)
File Type: pdf
Av68206.pdf (892.4 KB, 9 views)
paladin is offline  
Reply With Quote
Old 12-12-2009, 05:01 PM
  #1433
LDM
 
Join Date: May 2003
Location: Denver, PA
Posts: 9,283
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

Joe correct me if I am wrong , with forward strake , that would mean the landing gear mounting rails would need to be on an angle so the gear would lean forward when extended and turn slightly aft when retracted to stay flat once in the wing ?
I had the same set up with my seafury , but not as much of a forward angle
LDM is offline  
Reply With Quote
Old 12-12-2009, 08:00 PM
  #1434
paladin
 
Join Date: Feb 2002
Location: Vestal, NY
Posts: 2,814
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

yup, right now my forward rail is .200in below the aft rail. it does the same thing as adding the .250 spacer between the rail and Aft LG ear. if I wanted to move the strut further into the wing i move both rails into the wing =ly. this being an ARF I don’t have plans so I can’t be exact so I’ll live with what I get cause it won’t be perfect.

Joe
paladin is offline  
Reply With Quote
Old 12-16-2009, 11:05 PM
  #1435
paladin
 
Join Date: Feb 2002
Location: Vestal, NY
Posts: 2,814
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

Robart 660DB Gear Door Mounting Bracket 7/16" Strut (GDMB) tapped a second hole for mounting the Landing Gear Fairings. Cut the OLEO to length, slip the GDMB on the strut, press the bushing into place and taping them.

I’m not sure the Rhom Airs will hold up under the wt. of this plane but I seam to have them all over the work shop, so I’ll give it a try. I’ve used these with OLEO’s on planes up to 15#. But they make the setup of the angle of the strut pretty easy.

Joe
Attached Thumbnails
Click image for larger version

Name:	wu60325.jpg
Views:	18
Size:	383.1 KB
ID:	1336005   Click image for larger version

Name:	bz77425.jpg
Views:	27
Size:	1.08 MB
ID:	1336006   Click image for larger version

Name:	vr53057.jpg
Views:	31
Size:	440.8 KB
ID:	1336007   Click image for larger version

Name:	Ca82000.jpg
Views:	23
Size:	52.2 KB
ID:	1336008  
paladin is offline  
Reply With Quote
Old 12-17-2009, 10:10 AM
  #1436
SCALECRAFT
 
SCALECRAFT's Avatar
 
Join Date: Jan 2002
Location: MONTEBELLO, CA
Posts: 2,649
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

paladin

I have spring airs in mine. They work. My model is at 12lbs. It has a 108 in it.

My next one is getting a major bash, it will have CJet retracts once I finish the home expansion. 99% done though.

Steve
SCALECRAFT is offline  
Reply With Quote
Old 12-17-2009, 07:37 PM
  #1437
paladin
 
Join Date: Feb 2002
Location: Vestal, NY
Posts: 2,814
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

thanks Steve,

I weighed all the parts months ago, and estimate those parts I did not weight, and came up with 17#. I know it will come down as the real parts are added. I have not balanced it yet which may go against me but right now I’m hoping for 16#. That should be ok with rhom’s.

The rhom’s will make getting the angle right easy. Just bend the 3/16 joiner between the retract unit and OLEO’s. it looks like 1.25in over the length of the strut.

Joe
Attached Thumbnails
Click image for larger version

Name:	mi22280.jpg
Views:	27
Size:	895.5 KB
ID:	1336623   Click image for larger version

Name:	mr41077.jpg
Views:	24
Size:	492.8 KB
ID:	1336624   Click image for larger version

Name:	xr45968.jpg
Views:	24
Size:	712.4 KB
ID:	1336625   Click image for larger version

Name:	it10092.jpg
Views:	25
Size:	488.1 KB
ID:	1336626   Click image for larger version

Name:	pg62555.jpg
Views:	25
Size:	488.8 KB
ID:	1336627  

Click image for larger version

Name:	us54593.jpg
Views:	22
Size:	534.7 KB
ID:	1336628  
paladin is offline  
Reply With Quote
Old 12-19-2009, 02:47 PM
  #1438
dornhoffer
 
Join Date: Dec 2004
Location: ROland, AR
Posts: 16
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

Hey Paladin,
Your mods looks good and I think the Rhom Airs are strong enough. The only thing you might watch for is that they don't have a positive lock up like some of the newer gear. I have some on my Platt FW190 that comes in at around 12lbs. I have robart struts as you have done. They work great but if the gear doors don't fit snuggly against the leading edge, they tend to pull down in the slip stream and create drag as the gear are pulled down at high speed. I ended up flying without the gear doors because of this. Let us know how they work out.
Best, John
dornhoffer is offline  
Reply With Quote
Old 12-20-2009, 06:17 PM
  #1439
paladin
 
Join Date: Feb 2002
Location: Vestal, NY
Posts: 2,814
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

John, because they don’t lock in the retracted position they are much easier to set up. Because I don’t have to reach the up lock, it stops where ever it hits a solid stop. While rhoms not locking up causes them to sag (allow the wheels to partially deploy) under high G’s if over loaded. Like at the bottom of a loop. I have 5 other planes with rhoms the worst of which is my Platt Focke Wulf 190 D-9 with a 9in strut weighting 1oz, a wheel weighting 4.5oz, and a strut cover that weights .75ox for a total moment of 48.4oz-in. with a starting tank pressure of 80 psi I can get two retractions before the third one exhibits the problem you are talking about. So the me109 has an almost 7 in strut weighting 1.5oz, wheel weighting 4oz, and a cover weighting .75oz for a moment of 36 oz-in. so I think I’m ok with 80 psi on the tank

Joe
paladin is offline  
Reply With Quote
Old 01-01-2010, 03:45 PM
  #1440
paladin
 
Join Date: Feb 2002
Location: Vestal, NY
Posts: 2,814
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

guy's i finally joined the wings and even with the lowering of the front LG mount the landing gear axile is nowhere close to the LE. have any of you flown off grass? and how mutch of a shim did you use?

Joe
paladin is offline  
Reply With Quote
Old 01-14-2010, 12:33 AM
  #1441
paladin
 
Join Date: Feb 2002
Location: Vestal, NY
Posts: 2,814
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

I plugged the oversized dowel holes, figuring that the plastic ones would not hold up. Then used ¼ in dowels also can see that I glassed the center section. I did not take pic’s of the belly pan but it hid it all. the CG cam out at the aft recommended point, do you guys thing that is to far aft? should i move it forward for the first flights?

Joe
Attached Thumbnails
Click image for larger version

Name:	jh16578.jpg
Views:	26
Size:	921.8 KB
ID:	1355772   Click image for larger version

Name:	dy78525.jpg
Views:	33
Size:	846.6 KB
ID:	1355773   Click image for larger version

Name:	wb74408.jpg
Views:	21
Size:	816.0 KB
ID:	1355774   Click image for larger version

Name:	xq45169.jpg
Views:	25
Size:	726.9 KB
ID:	1355775   Click image for larger version

Name:	ju13830.jpg
Views:	24
Size:	907.0 KB
ID:	1355776  

paladin is offline  
Reply With Quote
Old 01-14-2010, 08:27 AM
  #1442
Hot Rod Todd
 
Hot Rod Todd's Avatar
 
Join Date: Oct 2002
Location: Robins, IA
Posts: 1,018
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

Is your fuel tank mounted behind the stock position? The CG for most planes is based on some fuel in the tank, if you mount the tank on or near the CG you often have to move the CG forward to get the same effective balance point. In any case, add lead as needed to get the CG up to the recommended position. With an OS 1.60 on the front of mine I had to add tail weight. You must have a light engine. I used the stock plastic inserts for the wing dowels, they worked fine and seem to be holding up well.
Hot Rod Todd is offline  
Reply With Quote
Old 01-14-2010, 03:11 PM
  #1443
paladin
 
Join Date: Feb 2002
Location: Vestal, NY
Posts: 2,814
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

thanks tod!
I'm thinking of moving it forward about 1/4 in
where is your CG?

Joe
paladin is offline  
Reply With Quote
Old 01-14-2010, 03:35 PM
  #1444
Hot Rod Todd
 
Hot Rod Todd's Avatar
 
Join Date: Oct 2002
Location: Robins, IA
Posts: 1,018
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

I don't remember. I'm sure you could search back about 50 pages or so on this forum and find it. I believe it's right on the recommendation, rare for a CmP aircraft. In most cases they provide a CG that is way too far back.
Hot Rod Todd is offline  
Reply With Quote
Old 01-14-2010, 06:06 PM
  #1445
paladin
 
Join Date: Feb 2002
Location: Vestal, NY
Posts: 2,814
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

Yup, before i fly i will look back to see what you guys that flew already got, but that wont be for a few months here in ny.

you can see the cg i marked in the picture with the fuel tank. i move the fuel tank back because it helps with the ground handling not having all that fuel forward of the wheels

Joe
paladin is offline  
Reply With Quote
Old 01-15-2010, 08:03 PM
  #1446
kahloq
 
kahloq's Avatar
 
Join Date: Jan 2006
Location: Fort Collins, CO
Posts: 4,295
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

CG = 112mm for good stable flying.

BTW, the plastic dowl ring things hold up fine as long as you use CA glue on the 3 little screws.
kahloq is offline  
Reply With Quote
Old 01-15-2010, 09:03 PM
  #1447
paladin
 
Join Date: Feb 2002
Location: Vestal, NY
Posts: 2,814
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

Thanks Kahlog

Joe
paladin is offline  
Reply With Quote
Old 02-14-2010, 11:16 AM
  #1448
vmibert
 
Join Date: Mar 2009
Location: Oro Valley, AZ
Posts: 26
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

Ty Brown has created a wonderful product (his spinner for the Nitro Planes Bf-109) and he put together some great tutorial videos that really helped!

Below are two photos of my Nitro Planes Bf-109 with Ty's spinner on it. The only issue I had with his spinner was that his backplate doesn't mount flush with my motor's hub, I'm having a friend make me a small, round plate to serve as a "washer" between the hub and the spinner plate. Other than that, and it looks perfect! After I painted my spinner, I poured on a coating of EnviroTex Lite Pour-On High Gloss Finish and after it cured, I got rid of the gloss by spraying it with a couple of coats of clear Dull Coat spray paint.

I'm still trying to tune my OS Surpass 200 2 cubic inch four-stroke engine. I can't wait to fly this!

Thanks again for your help!

Sincerely,

Bert
Attached Thumbnails
Click image for larger version

Name:	Mk26265.jpg
Views:	26
Size:	119.0 KB
ID:	1378610   Click image for larger version

Name:	To43794.jpg
Views:	28
Size:	80.1 KB
ID:	1378611  
vmibert is offline  
Reply With Quote
Old 02-14-2010, 12:44 PM
  #1449
21onen
 
21onen's Avatar
 
Join Date: Aug 2008
Location: Toronto, ON, CANADA
Posts: 68
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

I received my spinners last week. Very impressed. My plans are to use an E-flight 160 motor with the mounting bracket on the front . As a result the undercut in the spinner helps hide this bracket. Going through a drilling tapping process and using bevelled aircraft screws to mount the spinner to the base plate. Very nicely made spinners. Thanks Ty
Tero T in Toronto
21onen is offline  
Reply With Quote
Old 02-14-2010, 02:12 PM
  #1450
Bill Jennings
 
Join Date: Dec 2001
Location: CygnetTasmania, AUSTRALIA
Posts: 274
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: CMP BF109F BUILDING THREAD

G'Day
Got my spinner from Ty a couple of days ago also very imptessed. Thanks Ty.

Regards.
Bill
Bill Jennings 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 12:33 PM.