RE: KMP / YT FW-190 Build Thread  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       


Ziroli B-25 Mitchell - 101"make firm offer - RTF
Seller:  1972stroker
Details:   $3,800.00   |  7/15/2008   |  Classified Ad
We will rotate YOUR AD in this spot if you select "Forum Featured" when placing or editing your ad!

All Forums >> RC Airplanes >> RC Warbirds and Warplanes >> RE: KMP / YT FW-190 Build Thread
Page: <<   < prev  9 10 [11] 12 13 14 15 16 17 18   next >   >>  

Login
Message << Older Topic   Newer Topic >>
RE: KMP / YT FW-190 Build Thread - 11/10/2007 12:07:07 PM   
cgcrc


 

Posts: 52
Joined: 6/25/2007
From: Oshawa, ON, CANADA
Status: offline 		Hi dvs1;

Have been following the building thread for a while. Keep up the great effort it certainly is appreciated.
Had a chance to order one of these models at a recent show and is due in on the next shipment. (One of my upcoming winter projects).

Much like yourself I wanted to stay with a gasoline engine for this model. Wanted to know your thoughts between the Evolution 26 and the BCMA 26 you will be putting in your model. I was leaning toward the Evolution engine but wanted a chance to discuss this before purchasing either one.
From what I have read the weight should be close, the Evolution is indicated at 33.6 oz without muffler and the BCMA is at 36 with ignition and muffler.

Was it weight, size, hp, cost, fit inside the cowling, etc.

One last thing if possible, what is the approx. diameter of the cowling where the engine will sit.

Thanks again for the thread.

Regards
Randy

(in reply to dvs1)
       Post #: 251

RE: KMP / YT FW-190 Build Thread - 11/10/2007 3:10:51 PM   
PE2fan



Posts: 210
Joined: 6/30/2005
From: Glen Burnie, MD, USA
Status: offline 		Who is going to get one of these in the air ? I am really curious as to how it flies. I just bought a Saito 170 and need to decide if it is going in this plane or the Bearcat.

_____________________________

Club Saito #299

(in reply to cgcrc)
       Post #: 252

RE: KMP / YT FW-190 Build Thread - 11/10/2007 5:58:49 PM   
dvs1



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

Hi dvs1;

Have been following the building thread for a while. Keep up the great effort it certainly is appreciated.
Had a chance to order one of these models at a recent show and is due in on the next shipment. (One of my upcoming winter projects).

Much like yourself I wanted to stay with a gasoline engine for this model. Wanted to know your thoughts between the Evolution 26 and the BCMA 26 you will be putting in your model. I was leaning toward the Evolution engine but wanted a chance to discuss this before purchasing either one.
From what I have read the weight should be close, the Evolution is indicated at 33.6 oz without muffler and the BCMA is at 36 with ignition and muffler.

Was it weight, size, hp, cost, fit inside the cowling, etc.

One last thing if possible, what is the approx. diameter of the cowling where the engine will sit.

Thanks again for the thread.

Regards
Randy


Randy,

I highly considered the evolution 26 but in the end it was the money factor that made me purchase the BCMA26.
Weight is not a factor, acually both engines really don't weigh quite what I wanted for this tail heavy plane. But these are the
only two I really found that I think will fit entirely in the cowl, and that was the main thing for me was a hidden engine. Both will
spin comparable sized props. One thing I did want to get away from was the cradle type engine mount the Evolution uses. I wanted
to use a engine like the BCMA that uses standoffs or mounts directly to the firewall. I did contemplate using the BCMA40 as just a small
portion of the head would stick out and I would be able to use a scale prop. But I really am trying to get away from engine parts bulging
from cowls. I think its 6's either way, from my calculations Both SHOULD fit completely inside the cowl and both are good engines, and like
I said in the end it was cost for me. I also figured if I need just a little more room for the plug boot I can rotate the engine and fit the boot
in the cowl blister.
The cowl diameter where the engine will be placed is just at or under 8.5 inches.
If you have any other questions let me know and post some pics when you start your build. I like to see how other people are coming on
theirs as well and see any mods they are doing.

Later,
Curt

(in reply to cgcrc)
       Post #: 253

RE: KMP / YT FW-190 Build Thread - 11/11/2007 1:10:06 PM   
cgcrc


 

Posts: 52
Joined: 6/25/2007
From: Oshawa, ON, CANADA
Status: offline 		Hi Curt;

Thanks for the reply and info re engine selection. I was in at the local hobby dealer and measured the Evolution 26, as you mentioned I think it may be close to fit everything inside the cowling considering the spark plug cap. I'll now for certain once I get the model.

As yourself, I like to mount any of the larger gasoline engines "flush" to the firewall instead of the cradle set up. I presently use the "flush" mount system on a KMP DeHavilland Beaver on floats using a Zenoah G-26.

Any idea how much extra nose weight will be required for the FW 190. Was hopeful not to have added to much however with the shorter nose moment it doesn't surprise me. Again, with the Beaver I use a "FEMA" onboard compact electric starter system. Slick outfit, but still had to add a little nose weight.

Once I get underway with the model I'll certainly post some pics. If I go with the Evolution we can compare notes re assembly, engine mounting and flying characteristics.

Will keep you posted.

Regards
Randy



(in reply to dvs1)
       Post #: 254

RE: KMP / YT FW-190 Build Thread - 11/11/2007 9:06:46 PM   
Redback



Posts: 501
Joined: 8/27/2004
From: GraftonNew South Wales, AUSTRALIA
Status: online 		Having solved the problems with the stab I took a look at the rudder.

No holes drilled for the pull-pull to exit and no clues as to where they need to be. Drew out an outline of the fuse on an old plan to figure out the position lengthwise. Planning to use a Precision Aerobatics Carbon Fibre servo horn same as my Edge, this looks like it will match the width of the rudder horns.

On looking down the inside of the fuse there are two formers just behind where the elevator tubes exit, by design (hopefully) or good fortune these have holes in the sides that the cables can go through. Took a guess that the holes were 10mm below where the elevator pushrods exit and marked the vertical position using these as a guide.

Drilled the holes and Bl**dy miracle, they are in the right place. Now if I can only get the elevator pushrods to run smoothly I can move on. Seen that others had problems here, would like to use the supplied rods if possible but will discard if I have to.

BTW, still had a bit of a gap between the stab and fuse one side, even after all the bending and sanding. Found that adding a bit of black pigment to epoxy + microballons gave me a grey very similar to the colour of the stab.

Terry

< Message edited by Redback -- 11/11/2007 9:08:42 PM >

(in reply to cgcrc)
       Post #: 255

RE: KMP / YT FW-190 Build Thread - 11/11/2007 11:02:16 PM   
Helijet


 

Posts: 510
Joined: 1/9/2002
From: Kamloops, BC, CANADA
Status: offline 		Hi Terry

I just received my kit and have found all the same problems that you have described thus far. I apologized if I missed it earlier but what engine are you going to use. It looks to me like it is going to take a lot of weight up front to get to the correct CG.

Message to the designers - there is little in the manual to describe the flight characteristics of this bird? Can you supply us with any more info?

Regards
Dean W.



_____________________________

Dean Wichmann
microturbines

(in reply to Redback)
       Post #: 256

RE: KMP / YT FW-190 Build Thread - 11/12/2007 1:08:00 AM   
Redback



Posts: 501
Joined: 8/27/2004
From: GraftonNew South Wales, AUSTRALIA
Status: online 		Dean,

At the moment planning to use an OS120AX plus, I expect, a lot of weight.

May yet change my mind and go for a petrol engine though.

Regards

Terry

(in reply to Helijet)
       Post #: 257

RE: KMP / YT FW-190 Build Thread - 11/16/2007 1:34:15 PM   
BigRetracts-RCU



Posts: 229
Joined: 12/19/2001
From: Brunswick, OH, USA
Status: offline 		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



Attachments
Click to see fullsize image.
Click for fullsize


< Message edited by BigRetracts-RCU -- 11/16/2007 11:26:00 PM >

(in reply to Redback)
       Post #: 258

RE: KMP / YT FW-190 Build Thread - 11/16/2007 7:44:06 PM   
dvs1



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

Latest News,

The 1/6th scale FW-190 Tail Retracts are almost done.
There are only going to be about 15 built, so done be the 16th customer.

Available from Sierra Giant


Thanks again Darrell,

Can't wait to get mine in the mail and put it in. These will definately compliment this
plane well.

Curt

(in reply to BigRetracts-RCU)
       Post #: 259

RE: KMP / YT FW-190 Build Thread - 11/17/2007 9:23:46 AM   
ticketec


 

Posts: 908
Joined: 7/16/2003
From: Brisbane, AUSTRALIA
Status: online
quote:

ORIGINAL: dvs1

Mobyal,

What is the weight difference between your sierras and kmp gear. Also is there any play in
the strut or retract mechanism. I am leaning towards getting sierras when I get some extra cash,
because these kmp gear have some play in the retract block I can't get rid of as well as have some
twisting play in the oleo part of the strut. not to mention the two set screws that hold the strut into the
block are very very tiny, much smaller than I have seen on any other retracts. Even JB welded into the
retract block these gear are seriously making me nervous.

If the weight is the same or close that will be the determining factor as my plane is adding up on the scale quick.


Hey Dvs1

I just received the retracts off mobyal, and there is no play in them?? in actual fact one of the is almost a little too tight. I have found that they can seem a little too loose it they are not properly extended or retracted. It's like they feel to be in the right position and you can't force them to move, but there is some play. when i pumped a little more air into them, and the piston moved out a little more it were all good.

Thanks

dave

< Message edited by ticketec -- 11/17/2007 9:25:41 AM >

(in reply to dvs1)
       Post #: 260

RE: KMP / YT FW-190 Build Thread - 11/18/2007 6:43:58 AM   
dvs1



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

Hey Dvs1

I just received the retracts off mobyal, and there is no play in them?? in actual fact one of the is almost a little too tight. I have found that they can seem a little too loose it they are not properly extended or retracted. It's like they feel to be in the right position and you can't force them to move, but there is some play. when i pumped a little more air into them, and the piston moved out a little more it were all good.

Thanks

dave


Dave,

That is good that you received a good set. I have taken all avenues to tighten mine up but I am still unhappy with them. So as soon as
Christmas is over and I get some extra spending money for myself I am going to order a set of retracts and scale main wheels from Darrell
at Sierra to match the scale tailgear that I ordered from him yesterday.

On another note I am still waiting to receive my BCMA engine. Still hoping it will fit entirely in the cowl. I am also going to move all my servos
forward very close to the firewall to help my future CG issue. The only one I will leave in its intended place will be the Rudder/tailwheel steering servo.
Hopefully by keeping everything close to the firewall it will minimize the weight I will have to add to balance.

Have you started modifying your CMP FW-190 to accept the KMP gear yet?

Curt

(in reply to ticketec)
       Post #: 261

RE: KMP / YT FW-190 Build Thread - 11/18/2007 9:43:40 PM   
ticketec


 

Posts: 908
Joined: 7/16/2003
From: Brisbane, AUSTRALIA
Status: online 		Hey Curt,

No mate, They arrived at a bad time. Found out with 4 days notice that we can move into the house we have just bought so i'll have to start renovating about 2 months earlier than originally planned. So Thats going to chew up all the spare money and time.

I will try and do little bit's here and there in the next 2 weeks or so while i still have my work bench setup at the old place, but i also have to clear some customer jobs too. I have had a quick look at it and with the scale length of strut, the mounting plate will have to be moved outboard. they would not fit into the original's either so it's no great loss.

Thanks

Dave

< Message edited by ticketec -- 11/18/2007 9:47:14 PM >

(in reply to dvs1)
       Post #: 262

RE: KMP / YT FW-190 Build Thread - 11/19/2007 1:29:39 AM   
sevans16


 

Posts: 237
Joined: 11/16/2006
From: Las Vegas, NV, USA
Status: offline 		What is the stock setup for the tail wheel? Fixed/retract? Looking into the Sierra retracts, I see they are going to have a limiteed run of tail tracts but I am not committed to the plane yet.

_____________________________

AMA# 737516

(in reply to ticketec)