Golden Age, Vintage & Antique RC Want to discuss some of those from the golden age, vintage rc planes or even an old classic antique vintage rc planes, radios, engines, etc? This is the place for you. Enjoy!

WACO YMF

Old 10-22-2007, 06:59 AM
  #4076
Jim Henley
 
Join Date: Nov 2005
Location: Omaha, NE
Posts: 589
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Thank You George, I am looking forward to finally getting it in the air !
Jim Henley is offline  
Reply With Quote
Old 10-22-2007, 08:59 AM
  #4077
WacoJoe
 
Join Date: Jun 2007
Location: Oshkosh, WI
Posts: 103
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF


Quote:
ORIGINAL: aminiet

Regarding the cowlings, Also looking at the pictures on the National Waco Club I can see that some YMF as well as UMF had either evenly spaced blisters, or in pairs or no blisters at all such as the Cuban Navy air crafts which I am working on. Also looking at the aircraft right at top of the Cuban UMF, NC 14132 has a bigger cowling and not as flat as the Cuban UMF.
The cowlings with evenly spaced bumps are for Jacobs engines, and the evenly spaced bumps are for Continental engines. Smooth cowls were also used on both engines on some aircraft.

Joe
WB #54
WacoJoe is offline  
Reply With Quote
Old 10-22-2007, 09:01 AM
  #4078
skylarkmk1
 
skylarkmk1's Avatar
 
Join Date: Sep 2004
Location: Festus, MO
Posts: 2,030
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Jim (SCM), Bill and others,

FWIW info. Nelson Hobby Specialties http://www.nelsonhobby.com/ has piano hinge in 3/8, 1/2 and 5/8 widths and also suggested using a smaller wire for more free operation of the hinges. Nelson also has a 1/8th wide by 1/32nd thick flat flying wire in Stainless Steel.
skylarkmk1 is offline  
Reply With Quote
Old 10-22-2007, 09:35 AM
  #4079
SuperCub Man
 
Join Date: Sep 2002
Location: St. Catharines, ON, CANADA
Posts: 617
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Quote:
ORIGINAL: skylarkmk1

Jim (SCM), Bill and others,

FWIW info. Nelson Hobby Specialties http://www.nelsonhobby.com/ has piano hing in 3/8, 1/2 and 5/8 widths and also suggested using a smaller wire for more free operation of the hinges. Nelson also has a 1/8th wide by 1/32nd thick flat flying wire in Stainless Steel.
Also check out Lee Vallery Tool at http://www.leevalley.com/hardware/pa...=3,41241,41263 and note posting on page 200 post #3995
SuperCub Man is offline  
Reply With Quote
Old 10-22-2007, 10:53 AM
  #4080
red1
 
Join Date: Oct 2004
Location: Frederick, MD
Posts: 88
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Hi Guys

Is there some particilar reason why this lengthy thread is organized back-to-front (oldest-to-newest) ? I, for one, find it "strange" to have to go to the tail end to get to the most recent. But...I'm the new guy on the block, so...

Don Borton (aka red 1)
WACO Brotherhood 72
AMA IMAA
red1 is offline  
Reply With Quote
Old 10-22-2007, 11:14 AM
  #4081
skylarkmk1
 
skylarkmk1's Avatar
 
Join Date: Sep 2004
Location: Festus, MO
Posts: 2,030
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Don,

I guess RCU set it up to read like a book (you can print the thread out for a hard copy with out pictures). If you click on the link you get with an email notification (if you are subscribed to the thread), it will take you directly to the entry with out having to go through any other gyrations. If you want to reply and have not signed in the reply button will take you to a sign in page and then back to the page you were on after signing in.
skylarkmk1 is offline  
Reply With Quote
Old 10-22-2007, 11:23 AM
  #4082
vasek
 
vasek's Avatar
 
Join Date: Jan 2002
Location: Prague, CZECH REPUBLIC
Posts: 4,083
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Red, if you click on the arrow BESIDE the title, you'll get to the "unread" posts right away (if that was your question?)

Cheers, V.


Quote:
ORIGINAL: red1

Hi Guys

Is there some particilar reason why this lengthy thread is organized back-to-front (oldest-to-newest) ? I, for one, find it "strange" to have to go to the tail end to get to the most recent. But...I'm the new guy on the block, so...

Don Borton (aka red 1)
WACO Brotherhood 72
AMA IMAA
vasek is offline  
Reply With Quote
Old 10-22-2007, 03:39 PM
  #4083
mango12
 
Join Date: Mar 2007
Location: duncanville, AL
Posts: 282
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

I am sure this question has already been addressed, but without having to look thru what has now become the Wacopedia, what type of engine powered the YMF? And where can I purchase one in 1/4 scale?
Thanks
mango12 is offline  
Reply With Quote
Old 10-22-2007, 04:18 PM
  #4084
Stickbuilder
Thread Starter
 
Stickbuilder's Avatar
 
Join Date: Nov 2005
Location: Leesburg, FL
Posts: 8,658
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF


Quote:
ORIGINAL: mango12

I am sure this question has already been addressed, but without having to look thru what has now become the Wacopedia, what type of engine powered the YMF? And where can I purchase one in 1/4 scale?
Thanks
The original engine for the YMF was the 225 horsepower Jacobs 7 cylinder radial. As to where one can be had, I have no idea regardless of scale. I'm making mine from another radial engine who's cylinders look kinda-sorta like those from a Jake.

Bill, AMA 4720
WACO Brotherhood #1
Stickbuilder is offline  
Reply With Quote
Old 10-22-2007, 04:45 PM
  #4085
skylarkmk1
 
skylarkmk1's Avatar
 
Join Date: Sep 2004
Location: Festus, MO
Posts: 2,030
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Mango,

YMF-3 – Jacobs L4, 225hp, Even spaced Cowl Bumps
YMF-5 – Jacobs L4, 245hp, Even spaced Cowl Bumps
YMF-5 Classic – Jacobs R755B, Even spaced Cowl Bumps
YMF-5 Super – Jacobs R755B, Even spaced Cowl Bumps
Both the Classic and Super engines are available with fuel injection.
UMF-3 – Continental R-670, 210hp, Paired Cowl Bumps or Larger Smooth Cowl (Cuban UMFs for example)
Some were possibly refitted with the Continental R-670, 220hp engine

As far as I know, no one is making a true scale dummy Jacobs engine, although it is on the list for Williams Brothers according to the reply from Dan Brett, President of Williams Brothers;

Hi John,
oh boy, I hear you on that one! Once I get this business on it's feet, I'll be looking at what it takes to fill the gaps in the model engine world! The Jacobs was on the list for sure. Also, things like Continental for J-3 Cubs!
I'll be digging into the whole mold making process later this year.
I know some of those resin kits are actually casted from our cylinders when times got desperate after WmBros, Inc went out of business. I can't blame them, but the plastic injected type is really hard to beat for detail and durability.

This line needs to grow in order to survive, so I'll be looking at several items to add to the line!

Thank you for the input- I like to hear what people are after and on the wish lists out there!
I take it seriously!


Daniel J. Brett, President
Williams Brothers Model Products


Ken, Jim or Bill can probably tell where they got (or how they made) their engines.

Top flight has a vacuumed formed 9 cylider engine for their Staggerwing, and a couple of other places have resin cast engine but not a Jacobs or Continental.
skylarkmk1 is offline  
Reply With Quote
Old 10-22-2007, 05:01 PM
  #4086
mango12
 
Join Date: Mar 2007
Location: duncanville, AL
Posts: 282
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Bob Dively has a 1/4 scale P&W that I thought I might be able to modify, but I am not sure what I would have to do to convert it, as I am not familiar with either engine.
John , your input on this thread has been top notch, thanks.
Any input from the Brotherhood on this subject would be great !!
Scott
mango12 is offline  
Reply With Quote
Old 10-22-2007, 05:48 PM
  #4087
Tony V.
 
Join Date: Mar 2004
Location: Lafayette, IN
Posts: 146
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Guys.,
Look at the GP..PT-17 Dummy Radial Engine. 7 cyl. Just fits inside my Cox WACO Cowl....Part No. GPMA2806...
I think it will look good in my ARF.....
Tony V. is offline  
Reply With Quote
Old 10-22-2007, 05:57 PM
  #4088
khodges
 
Join Date: Jul 2003
Location: newton, NC
Posts: 5,443
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF


Quote:
ORIGINAL: mango12

Bob Dively has a 1/4 scale P&W that I thought I might be able to modify, but I am not sure what I would have to do to convert it, as I am not familiar with either engine.
John , your input on this thread has been top notch, thanks.
Any input from the Brotherhood on this subject would be great !!
Scott
Scott, my dummy came from www.aerotecmodels.com

They have both 7 and 9 cylinder dummies in 1/7, 1/6, 1/5, and 1/4 scales. They look more like Wright or P&W, but they're passable. The 1/4 scale 7 cylinder is $65.00. These are resin cast, fairly basic, but details are easy to make. This is what mine looked like before and after:
Attached Thumbnails
Click image for larger version

Name:	Ur52008.jpg
Views:	18
Size:	78.5 KB
ID:	788221   Click image for larger version

Name:	Hc93062.jpg
Views:	24
Size:	53.4 KB
ID:	788222   Click image for larger version

Name:	Wb75007.jpg
Views:	25
Size:	85.2 KB
ID:	788223   Click image for larger version

Name:	Ge96945.jpg
Views:	22
Size:	150.2 KB
ID:	788224  
khodges is offline  
Reply With Quote
Old 10-22-2007, 06:12 PM
  #4089
skylarkmk1
 
skylarkmk1's Avatar
 
Join Date: Sep 2004
Location: Festus, MO
Posts: 2,030
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Mango,

The Williams Bros Cylinders P & W Wasp cylinders show the most promise to be converted to a Jacobs “sorta looks like” engine but you would still have to make your own crank case. The Williams Bros. site has a mini How-To on building a small crank case that might be of help.

The Bob Dively 7 cylinder P & W (p/n DE-502) is the right diameter (10” for ¼ scale) and may be the cheapest ($22) and easiest conversion. No crankcase to build. Maybe not, they are vacuum formed and would need some backing (epoxy w/microballoons or similar inside) before any cutting could be done.

In the meantime here are a few pictures of a real Jacobs engine (L 245hp);

P1 Overall View
P2 Cylinder #1 Front view, note the fins turn up on the exhaust side rocker tower and no fins on the intake side, the different diameters of the fins on the upper (natural) section with slightly wider spacing then the smaller diameter fins on the lower (black) section. Rocker housing/covers are different than the P & W.
P3 Cylinder #7 Top view
P4 Jacobs R 755, 275 hp mounted in an YKC.
Attached Thumbnails
Click image for larger version

Name:	Pm34689.jpg
Views:	19
Size:	80.4 KB
ID:	788260   Click image for larger version

Name:	Xv65149.jpg
Views:	14
Size:	69.2 KB
ID:	788261   Click image for larger version

Name:	Lj22687.jpg
Views:	14
Size:	87.3 KB
ID:	788262   Click image for larger version

Name:	Wu59444.jpg
Views:	14
Size:	72.1 KB
ID:	788263  
skylarkmk1 is offline  
Reply With Quote
Old 10-22-2007, 06:50 PM
  #4090
Tony V.
 
Join Date: Mar 2004
Location: Lafayette, IN
Posts: 146
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

$19.95, No pushrods, or sparkplug wires yet...
Attached Thumbnails
Click image for larger version

Name:	Zw69552.jpg
Views:	26
Size:	46.1 KB
ID:	788290   Click image for larger version

Name:	Wr53992.jpg
Views:	25
Size:	84.3 KB
ID:	788291  
Tony V. is offline  
Reply With Quote
Old 10-22-2007, 07:34 PM
  #4091
skylarkmk1
 
skylarkmk1's Avatar
 
Join Date: Sep 2004
Location: Festus, MO
Posts: 2,030
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Tony,

Who makes it?
skylarkmk1 is offline  
Reply With Quote
Old 10-22-2007, 08:35 PM
  #4092
Jim Henley
 
Join Date: Nov 2005
Location: Omaha, NE
Posts: 589
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Tony,
That is what I have in my WACO, the Great Planes pt-17 radial, you can not beat the price and by the time you get it inside the cowl you have to be VERRRYYY close to see that it is a vacuformed engine. Put the (included) push rods and plug wires on and your good to go !!
Jim Henley is offline  
Reply With Quote
Old 10-22-2007, 08:51 PM
  #4093
Live Wire
 
Live Wire's Avatar
 
Join Date: Nov 2002
Location: Sterling , CO
Posts: 6,059
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Jim
Nice looking plane won't be long now and up she goes.
Live Wire is offline  
Reply With Quote
Old 10-23-2007, 09:57 AM
  #4094
mango12
 
Join Date: Mar 2007
Location: duncanville, AL
Posts: 282
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Thanks guys. I am ordering the Bob Dively engine today. I'll let you know how it turns out!!!
Scott
mango12 is offline  
Reply With Quote
Old 10-23-2007, 12:03 PM
  #4095
SuperCub Man
 
Join Date: Sep 2002
Location: St. Catharines, ON, CANADA
Posts: 617
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

I guess everyone has their own way of doing this, but through the info you guys so kindly provided, I came up with this method. (Pix #1).
I like the thought of being able to replace a burnt out bulb or LED so I made the unit removable. The lights are from a small clip-on reading light and have the spring at the back of the LED still attached. I put a removable balsa strip behind them so the spring holds them tight into the frame but allows removal if necessary. (Pix#2) A clear plastic cover on the wing will hold them in place.
Two LEDs each side on a 3 cell pack give enough light to see fairly well even in the daylight. (Pix #3).
Overall effect is satisfying if not overly dramatic! (Pix#4) but I'm happy with the effect - now for the wing tip lights!! I have that nearly solved with a flashing white LED that I will use as a strobe and a non-flashing coloured LED all squeezed together in an aluminum tube. Some work yet to do on it, but it looks promising!
Attached Thumbnails
Click image for larger version

Name:	Jg14048.jpg
Views:	37
Size:	64.7 KB
ID:	788816   Click image for larger version

Name:	Mi22277.jpg
Views:	44
Size:	53.4 KB
ID:	788817   Click image for larger version

Name:	Mr39756.jpg
Views:	41
Size:	47.3 KB
ID:	788818   Click image for larger version

Name:	Qk21685.jpg
Views:	40
Size:	70.7 KB
ID:	788819  
SuperCub Man is offline  
Reply With Quote
Old 10-23-2007, 01:34 PM
  #4096
BigBoy99
 
Join Date: Dec 2006
Location: Berg/Ravensburg, GERMANY
Posts: 288
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Hey Jim,

that looks great, good job. I´m doing the same just now on my Waco. I will take two high power Led´s emitter
with 240 lumen light stream each and reflectors.



Regards
Bernie
BigBoy99 is offline  
Reply With Quote
Old 10-23-2007, 02:51 PM
  #4097
BigBoy99
 
Join Date: Dec 2006
Location: Berg/Ravensburg, GERMANY
Posts: 288
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Hi Guys,

I´m searching for a scale prop in 32x18", who knows, where to buy?
It should look like this:




Bernie
Attached Thumbnails
Click image for larger version

Name:	Wu60661.jpg
Views:	31
Size:	70.0 KB
ID:	789006  
BigBoy99 is offline  
Reply With Quote
Old 10-23-2007, 03:32 PM
  #4098
skylarkmk1
 
skylarkmk1's Avatar
 
Join Date: Sep 2004
Location: Festus, MO
Posts: 2,030
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

Bil and the rest of the gang,

I just talked to Darrell at Precision and he has recieved the pictures I have sent him. We discused a few points on mounting to the fuse, making the inner strut adjustable, tail wheel streering, incorporating a wheel pant mount on the lower gear, and how to keep the lower section from rotating (he already has that figured out). He will be doing some drawings and talking to his welder about some of the parts and doing a mock up. The thought is that the Main Upper section for the 1/5th Pica will be 5/8th OD (a little larger than scale) and will be under the fairing so it should not matter. The inner strut will possibly be just a round section, but similar to full size, you can cap it with wood to get a airfoil section. He does have a few projects he is working on that he needs to finish up before he can get going on our gear, so be patient, it may be a couple of weeks before he starts.
skylarkmk1 is offline  
Reply With Quote
Old 10-23-2007, 03:43 PM
  #4099
khodges
 
Join Date: Jul 2003
Location: newton, NC
Posts: 5,443
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF


Quote:
ORIGINAL: BigBoy99

Hi Guys,

I´m searching for a scale prop in 32x18", who knows, where to buy?
It should look like this:

Bernie
Bernie, I doubt you'll find one like that, but it's easy enough to make one. First, find a nice wood prop about 34 inch diameter; the chord of the longer prop is likely a tad wider than a 32 prop would be. Cut the tips square, bringing the prop down to the required 32" diameter. Sand the prop to bare wood, removing the factory finish, or at least most of it. Using the picture you posted, take measurements of the leading edge cladding and transfer them to the scale prop, pencilling in the shape of the cladding. Then use some metal tape like heating and a/c ducts are taped with and trace the shape onto it, cut it out and apply to the prop. Burnish it down with a piece of dowel or a Sharpie cap, mask and paint the tips, and then clearcoat the entire prop. If you want to try flying the prop, check the balance at every step, and then when you clearcoat it, achieve final balance with the clear coat.

The hub can be done with a fender washer, 2-56 threaded rod (or proper proportion for the scale you're using) and nuts to fit. Then a big prop hub to top it off.

Here's the picture I used and the scale prop I came up with, using a 20 inch Zinger prop, cut to 18 inches:
Attached Thumbnails
Click image for larger version

Name:	Qo39022.jpg
Views:	21
Size:	25.8 KB
ID:	789038   Click image for larger version

Name:	Yu63549.jpg
Views:	26
Size:	56.4 KB
ID:	789039   Click image for larger version

Name:	Sx61180.jpg
Views:	23
Size:	51.8 KB
ID:	789040   Click image for larger version

Name:	Wp40929.jpg
Views:	19
Size:	52.9 KB
ID:	789041  
khodges is offline  
Reply With Quote
Old 10-23-2007, 04:18 PM
  #4100
trlambsr
 
Join Date: Jan 2002
Location: Bethesda, MD
Posts: 85
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: WACO YMF

John
I would like to thank you for what you are doing to Help Darrell At Sierra Giant Scale design landing gears for the WACO. Without your help it would not have come to were it is. We will now, because of your efforts be able to have the Best scale landing gear made by who I think is the best vendor in the business.
Thank you again for all you have been doing and I hope the group appreci
Quote:
ORIGINAL: skylarkmk1

Bil and the rest of the gang,

I just talked to Darrell at Precision and he has recieved the pictures I have sent him. We discused a few points on mounting to the fuse, making the inner strut adjustable, tail wheel streering, incorporating a wheel pant mount on the lower gear, and how to keep the lower section from rotating (he already has that figured out). He will be doing some drawings and talking to his welder about some of the parts and doing a mock up. The thought is that the Main Upper section for the 1/5th Pica will be 5/8th OD (a little larger than scale) and will be under the fairing so it should not matter. The inner strut will possibly be just a round section, but similar to full size, you can cap it with wood to get a airfoil section. He does have a few projects he is working on that he needs to finish up before he can get going on our gear, so be patient, it may be a couple of weeks before he starts.
ates your efforts as much as I do.
TR
WACO Brotherhood # 69
trlambsr is offline  
Reply With Quote


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 12:26 PM.