RE: KMP / YT FW-190 Build Thread

RE: KMP / YT FW-190 Build Thread
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RE: KMP / YT FW-190 Build Thread - 11/27/2007 5:45:52 AM

dvs1

Posts: 163
Joined: 4/25/2005
From: Kanab, UT, USA
Status: offline

After taking another look at the plane with the cowl installed I've decided that the standoff length that I chose is incorrect.
I installed 60mm standoffs and I should have used 50mm. So tomarrow I will order a set of 50mm stand offs. By using the
shorter standoffs I will accomplish 2 things. First the Spinner will be in a very, very close scale position in relation to the cowl.
Second I may be able to get away without modifying the cowl blister for the spark plug boot.

On another note for those curious I threw the plane on my balancer with engine installed and with 2 battery packs on the firewall,
and all servos moved forward to the firewall I will still need to add nose weight. However I did use one of the lightest gas engines
on the market so with a heavier gasser the 10-15 oz. might bring it very close to balancing.

(in reply to dvs1)

Post #: 276

RE: KMP / YT FW-190 Build Thread - 11/27/2007 1:37:50 PM

cgcrc

Posts: 50
Joined: 6/25/2007
From: Oshawa, ON, CANADA
Status: offline

Hi Curt;

Your efforts and model are looking great. Nice to see the pics of the BCMA installed.
Haven't received my model yet, should be in shortly, acquiring all the accessories for now.

Was wondering if you have a chance could you measure the distance of your BCMA 26 from the center of the crankshaft to the top of the spark plug cap. Just comparing numbers with the Evolution 26. As yourself, I would like to have the engine enclosed in the cowling if possible. (I haven't purchased any engine yet). Would still like to use a gasoline engine.

1) Also, what muffler system will you be using with the BCMA and where will it exhaust?

2) Not having seen the model yet, is there a sufficient opening between the fuse and the cowling to allow cooling air for the engine to exhaust?

3) If one were to consider a glow engine what are your thoughts on a OS FT 160 twin. It's rated at 26cc, h.p. and weight is similar to your BCMA? Overall size from the top of each cylinder head is appox. 7.75".

Appreciate the building thread and your efforts.

Regards
Randy

(in reply to dvs1)

Post #: 277

RE: KMP / YT FW-190 Build Thread - 11/28/2007 1:14:23 AM

AKondor

Posts: 351
Joined: 10/11/2002
From: Thunder Bay, ON,
Status: offline

Hi Guys:

I will definitely order some extra drop tanks for these models. I had no idea we swould get som many requests for more of them. the next container leaving at the end of December (arriving end of January with fingers crossed) will have some extra units in it. If they are primed and airbrushed with the matching color the price will be 29.95 each.

_____________________________

Andrew Kondor
KMP Models

(in reply to cgcrc)

Post #: 278

RE: KMP / YT FW-190 Build Thread - 11/28/2007 5:11:49 AM

dvs1

Posts: 163
Joined: 4/25/2005
From: Kanab, UT, USA
Status: offline

Randy,

The distance to the top of the cylinder head is only 3.5 inches, however the distance to the very top of the plug boot installed is 5.0 inches and this is
where I am having my small dilema.

I may just use the equipped muffler with the engine and let it exit out the bottom af the cowl via a .75 inch hole which I could totally live with.

If you look back on the first couple of pages on this thread I have pics posted of the cowl openings for exaust gasses to escape, they are basically the exact
shape and size the real plane runs its exaust head pipes out. Plenty of room I think for breathing.

I thought of giving Keleo creations a call and having them build me a custom exaust for this plane so it would have a realistic functional exaust but I am afraid
there might not be enough room for both scale exaust and exiting airflow. So for right now I will put the exaust on hold before making any decisions.

As far as the glow engines are concerned I have totally given up on them for aircraft. I am just sick and fed up with cleaning the gooey mess of a fantastic looking
plane every time I go flying. But sometimes you have to decide on these smaller planes, messy oil everywhere or extra holes in the cowl. I am very confident that
with the BCMA engine it will be completely enclosed except I may have to make the right blister a little longer like a stated in my previous post. I will keep you posted
when I get the new stand offs installed whether or not cowl mod is necessary. Either way I need the shorter 50mm stand offs because where the spinner sits now does
not look right.

This is my first BCMA engine as well so I hope reliability and power will not be a problem.

Later,
Curt

(in reply to AKondor)

Post #: 279

RE: KMP / YT FW-190 Build Thread - 11/28/2007 5:16:15 AM

MANFRED

Posts: 773
Joined: 1/26/2002
From: san diego, CA, USA
Status: offline

Anyone figure out a spinner for this Deutschland Beeotch yet?

< Message edited by MANFRED -- 11/28/2007 5:18:55 AM >

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Life is too short to fly ugly planes!

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Post #: 280

RE: KMP / YT FW-190 Build Thread - 11/28/2007 12:45:22 PM

cgcrc

Posts: 50
Joined: 6/25/2007
From: Oshawa, ON, CANADA
Status: offline

Hi Curt;

Thanks for your reply and measurements of the engine. I saw the previous post of the pics re the exhaust cooling and agree it looks to be sufficient.

I also have used fabricated blisters on previous models to enclose the plug cap. Unless you knew the model it looks like it was part of the mould.

Keleo Creations is a good option for a modified exhaust system. Agreed, to use the openings on the fuse for the scale exhaust will restrict the airflow. Another option may be if you go with Keleo is to have two stacks exit the bottom of the cowl such as the larger FW 190 that are using the 215 radial. As you say, you have a little bit of time to think about that.

Since you are using the BCMA I may go with the Evolution 26 so we can compare "apples and oranges" on this model, both for installation and flying qualities.

(Oh yes, I need to have the model first).

Thanks again.

Regards
Randy

(in reply to MANFRED)

Post #: 281

RE: KMP / YT FW-190 Build Thread - 11/28/2007 1:33:42 PM

mobyal

Posts: 698
Joined: 1/2/2006
From: Lexington, VA, USA
Status: offline

quote:

ORIGINAL: MANFRED

Anyone figure out a spinner for this Deutschland Beeotch yet?

Andrew said (Post #164 on p.7) that they were having spme made up by Truturn.
Haven't heard if they;re available yet.
Andrew?

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MobyAl

(in reply to MANFRED)

Post #: 282

RE: KMP / YT FW-190 Build Thread - 11/30/2007 2:21:18 AM

MANFRED

Posts: 773
Joined: 1/26/2002
From: san diego, CA, USA
Status: offline

Thanks

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Post #: 283

RE: KMP / YT FW-190 Build Thread - 12/1/2007 3:03:56 AM

dvs1

Posts: 163
Joined: 4/25/2005
From: Kanab, UT, USA
Status: offline

I received my retractable tailgear today from Darrell at Sierra and I have to say I am very impressed. This thing looks
fantastic. One thing that surprises me is this thing is extremely light. I will be using a different light weight tail wheel and
by using it and my new retractable tailgear it barely weighs much more than the factory heavy gauge wire setup with the
heavy tailwheel. So it will not hinder my balancing problems. Which is great so now I won't worry about installing a scale
cockpit as planned.

(in reply to MANFRED)

Post #: 284

RE: KMP / YT FW-190 Build Thread - 12/6/2007 5:21:08 AM

MANFRED

Posts: 773
Joined: 1/26/2002
From: san diego, CA, USA
Status: offline

Anyone install one of these tailgear yet? Got the gear but no plans or hints as to installation.

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Life is too short to fly ugly planes!

(in reply to dvs1)

Post #: 285

RE: KMP / YT FW-190 Build Thread - 12/6/2007 3:24:51 PM

mike-rc

Posts: 63
Joined: 2/13/2004
From: Port Washington, NY, USA
Status: offline

Hello Mobyal,
Thats pretty funny that we have the same winter projects! You have excellent taste in aircraft!
What are you using for power in this plane? I was going to use an AXI 5330/18, but I think it would get to heavy, and my batteries are the long type which I would not be able to get far enoungh forward to get the CG right. I decided to follow Curt's lead and have ordered a BCMA-26. I can deal with gas, but I will never fly with glow again.

Manfred,
Darrell at Sierra said you will need to add a former to mount the tail gear to. You also will need to make up a block of wood to mount the top of the piston to so it has something to push against.
Mike

(in reply to MANFRED)

Post #: 286

RE: KMP / YT FW-190 Build Thread - 12/6/2007 3:36:25 PM

mobyal

Posts: 698
Joined: 1/2/2006
From: Lexington, VA, USA
Status: offline

Mike --
I posted pics on here of the retracts -- kit and Sierra -- side by side so guys could see them. Dave in Australia bought the kit retracts from me and seemd pleased w/ them. Main gear is fine w/ me. Don't want the hassle of the rear retract, but will figure out something to do w/ the tailwheel to make it look better.
I'm a glo guy myself, so I'm thinking an OS160fx; may be a little too much power, but will fit fine. But I hope somebody gets one of these things in the air and gives us a good flight report. Video'd be nice too. Someone said he posted a video of an electric-powered one on here, but I couldn't find it. I'm a little concerned about the weight.. The kit's sure a beauty; how do you like those "instructions", tho? LOL
Best of luck.
Al

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MobyAl

(in reply to mike-rc)

Post #: 287

RE: KMP / YT FW-190 Build Thread - 12/6/2007 4:04:18 PM

mike-rc

Posts: 63
Joined: 2/13/2004
From: Port Washington, NY, USA
Status: offline

The instructions are a joke. They don't even match the plane, the flaps are totally different. I just don't get it. They spend all the time and effort to make a really nice plane and then they drop the ball when they are like 95% of the way there. How much harder would it be to have a descent tail wheel and better instructions?
Roy Vallaincourt from Vailly Aviation demonstrated his Top Gun 1/4 scale FW-190 at our last club meeting. I will try and incorporate some of the features he used. I want to internalize the elevator pushrods and use a more scale pull-pull on the rudder. I will post a couple pics of his plane.
Mike

(in reply to mobyal)

Post #: 288

RE: KMP / YT FW-190 Build Thread - 12/6/2007 4:56:19 PM

MANFRED

Posts: 773
Joined: 1/26/2002
From: san diego, CA, USA
Status: offline

quote:

ORIGINAL: BigRetracts-RCU

Latest News,

The 1/6th scale FW-190 Tail Retracts are almost done.
There are only going to be about 15 built, so don't be the 16th customer.

Available from Sierra Giant

Let me clarify, I got one of these tail retracts and was trying to find some installation ideas.

_____________________________

Life is too short to fly ugly planes!

(in reply to BigRetracts-RCU)

Post #: 289

RE: KMP / YT FW-190 Build Thread - 12/7/2007 4:01:06 AM

dvs1

Posts: 163
Joined: 4/25/2005
From: Kanab, UT, USA
Status: offline

Sorry guys been away for a little while I have a few too many things going on in my life right now so the 190 has kind of been on standby.

First I have to report that I have installed the now 50mm standoffs on my BCMA engine and the distance from the firewall in relation to the cowl is
perfect. With the proper spinner it will have the correct dimensions and look excellent. If only I could find a scale cooling fan I would really be in business.
There is plenty of room now for the spark plug in the cowl blister but with the plug boot installed and the cowl in place everything fits but the boot is putting
pressure on the cowl and would eventually rub a hole in it so I will still have to slightly modify the cowl blister but will be a very small modification in my opinion.
If one would take more time than I did on final engine alignment and mounting I believe one would not need to modify the blister with this engine setup.

As has been asked about the Sierra tailgear retract, that is going to be my next installation as soon as I get some time in my chaotic life. I already have the hole
in the fuse cutout as can be seen a page or two back. All that needs to be done is to install a vertical former right in front of the hole to mount to and cut a small
hole in the back of the vertical fin and install a horizontal former for the air cylinder to mount to then fill the hole, attatch rudder, mount retract, and run a pull, pull
steering setup. I know it sounds complicated but in reality quite simple the hardest part will be to shape the formers without a real template. Unless some one wants
to cut their Fuse in two and make me one.

Unless someone beats me to the punch I will post some step by step pictures