TF FW190 GIANT ARF
03-31-2016, 08:48 PM
#4151
The white powder is flux.
It's to help clean the impurities from the parts as you perform the soldering process.
I've never used powdered flux for silver silver.
See if you can source this product,http://www.micromark.com/Stay-Brite-...qb-RoC0QTw_wcB
It's all I've ever used for structural joints and I was taught to use it at the age of 15 back in the mid 70's.
Scuff your parts clean with scotch brite,apply the liquid flux, remember it's a corrosive acid.
Heat the parts with a small torch or soldering gun. Touch the solder to the parts. It will flow to the heart when you reach the proper temp. Allow the joint to cool normally. Don't disturb the joint as it cools.
It's to help clean the impurities from the parts as you perform the soldering process.
I've never used powdered flux for silver silver.
See if you can source this product,http://www.micromark.com/Stay-Brite-...qb-RoC0QTw_wcB
It's all I've ever used for structural joints and I was taught to use it at the age of 15 back in the mid 70's.
Scuff your parts clean with scotch brite,apply the liquid flux, remember it's a corrosive acid.
Heat the parts with a small torch or soldering gun. Touch the solder to the parts. It will flow to the heart when you reach the proper temp. Allow the joint to cool normally. Don't disturb the joint as it cools.
06-06-2016, 07:50 AM
#4152
Hello guys, now my gear is bendt as well.
It was a brand new trunion, bendt on the first flight.
The landing was flawless, and i made a small couse correction just after touchdown. Maybe changed course 10 degrees.
And that was it.
The trunion was newly installed, but the original gear has lasted for perhaps somewhere between 70 and 100 landings.
Then I had a real accident, and had to replace the trunion.
And the new one didn't last even one landing.
Soft as butter.
So there obiously has been a quality change here.
Now I dont know what to do; The Focke Wulf is grounded.
It was a brand new trunion, bendt on the first flight.
The landing was flawless, and i made a small couse correction just after touchdown. Maybe changed course 10 degrees.
And that was it.
The trunion was newly installed, but the original gear has lasted for perhaps somewhere between 70 and 100 landings.
Then I had a real accident, and had to replace the trunion.
And the new one didn't last even one landing.
Soft as butter.
So there obiously has been a quality change here.
Now I dont know what to do; The Focke Wulf is grounded.
Last edited by kwik; 06-06-2016 at 07:57 AM.
06-06-2016, 09:45 AM
#4156
06-06-2016, 09:51 AM
#4157
I have Sierra gear in my Vailly Fw 190 and Sist 190. There is no way to get spare parts.
The mails are simply not answered, and thats it.
I don't know what's worse. Getting spare parts that lasts for one flight, or not getting any.
Last edited by kwik; 06-06-2016 at 09:53 AM.
06-06-2016, 10:29 AM
#4160
There is a problem with Sierra for the Top Flite 190;
Look at the angle; It is made for a 190 with the correct dihedral. There is almost no dihedral on the Top Flite........
Why Top Flite made it without the correct dihedral? Maybe to avoid us going for Sierra?
Hehe.
Look at the angle; It is made for a 190 with the correct dihedral. There is almost no dihedral on the Top Flite........
Why Top Flite made it without the correct dihedral? Maybe to avoid us going for Sierra?
Hehe.
Last edited by kwik; 06-06-2016 at 10:31 AM.
06-06-2016, 10:34 AM
#4161
Yes, well, thats until you try to get some spare parts.....its impossible.
I have Sierra gear in my Vailly Fw 190 and Sist 190. There is no way to get spare parts.
The mails are simply not answered, and thats it.
I don't know what's worse. Getting spare parts that lasts for one flight, or not getting any.
I have Sierra gear in my Vailly Fw 190 and Sist 190. There is no way to get spare parts.
The mails are simply not answered, and thats it.
I don't know what's worse. Getting spare parts that lasts for one flight, or not getting any.
Roger
http://www.vqwarbirds.com/
06-06-2016, 10:43 AM
#4163
Roger
06-06-2016, 10:45 AM
#4164
Serra are far more Scale than the Robarts too. About the wrong Diherderal on the TF FW 190.
I'd think it would be easy enough to modify the landing gear mounting blocks especially on the Kit of the FW 190 to accommodate the better scale Serra gear. Just My Opinion since I like a FW Killer like the Republic P-47. Could U see the old P-47 say with a 20 MM miny Gun under each wing. WOW. But then this is the FW 190 show sorry.
I'd think it would be easy enough to modify the landing gear mounting blocks especially on the Kit of the FW 190 to accommodate the better scale Serra gear. Just My Opinion since I like a FW Killer like the Republic P-47. Could U see the old P-47 say with a 20 MM miny Gun under each wing. WOW. But then this is the FW 190 show sorry.
06-06-2016, 03:35 PM
#4166
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There is a fix for the Robart gear. The FW190 electric gear has the same flaw as the TF P51 gear. The Gear will twist and ruin the pivot. You can fix this, It has been discuss in this thread several years ago. The quick answer is to put a set of cam blocks in the back of the gear housing. Then both sides of the pivot will be caged in the cam block and they can no longer twist. I have done this to 3 set of Robart TF gear and it fixes the problem permanently
.
06-06-2016, 03:50 PM
#4167
There is a fix for the Robart gear. The FW190 electric gear has the same flaw as the TF P51 gear. The Gear will twist and ruin the pivot. You can fix this, It has been discuss in this thread several years ago. The quick answer is to put a set of cam blocks in the back of the gear housing. Then both sides of the pivot will be caged in the cam block and they can no longer twist. I have done this to 3 set of Robart TF gear and it fixes the problem permanently.
06-06-2016, 04:18 PM
#4168
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When you put another set of cam block in the back it cages both sides of the pivot. If you take apart a Robart TF FW P51 gear or actually watch the jack screw push on the pivot when it is fully extended. Then, even on a good landing, just a little side force pop the pivot out and bend the pivot shafts. When you use an extra set of cam blocks, the pivot shafts are encase in the cam blocks and can't twist. Also the jack screws id now putting equal pressure both sides of the pivot.
Sorry no better pictures are available.
06-06-2016, 05:53 PM
#4169
This is only a problem with the electric gear. The jack screw goes thru the pivot, putting unequal pressure on the pivot when fully extended. This is not a problem on the air version. 
When you put another set of cam block in the back it cages both sides of the pivot. If you take apart a Robart TF FW P51 gear or actually watch the jack screw push on the pivot when it is fully extended. Then, even on a good landing, just a little side force pop the pivot out and bend the pivot shafts. When you use an extra set of cam blocks, the pivot shafts are encase in the cam blocks and can't twist. Also the jack screws id now putting equal pressure both sides of the pivot.
Sorry no better pictures are available.
When you put another set of cam block in the back it cages both sides of the pivot. If you take apart a Robart TF FW P51 gear or actually watch the jack screw push on the pivot when it is fully extended. Then, even on a good landing, just a little side force pop the pivot out and bend the pivot shafts. When you use an extra set of cam blocks, the pivot shafts are encase in the cam blocks and can't twist. Also the jack screws id now putting equal pressure both sides of the pivot.
Sorry no better pictures are available.
06-07-2016, 06:27 AM
#4171
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Nice to see this thread is still going after this long. I got my 190 a few weeks ago and just started working on it. It's my first GS. Been reading through this whole thread and there sure is a lot of good info here. I'll run the Saito FG84 on mine. Ran it on the bench and after 40oz it would not start anymore. Sent it back to HH and they found the drive flange moved changing the timing and the ignition unit was also bad. No idea how that could've happened. I'll get it back Thursday and we'll see how it does.
06-09-2016, 07:15 AM
#4172
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Top Flite FW-190 ARF Dihedral
For those of you looking to modify the dihedral, I contacted Top Flite directly on what the dihedral of the TF FW-190 ARF is. Here's their response:
"I sent your question directly to the R&D employee who worked on the plane, below is his response.
The drawings are showing 7 degrees total, 3.5 degrees per wing panel. This is measured from the datum line to the horizontal line. If you measure the bottom of the wing to the horizontal it is 5 degrees, 10 degrees total."Also, the scale dihedral for the FW-190 is 6.2 degrees per side as measured from the wing datum line. I found this at (http://www.rcgroups.com/forums/showt...=2#post4911625). I also have the book he pulled this from (Aircraft Archive: Classics of World War II) which has some great diagrams of the FW-190.
"I sent your question directly to the R&D employee who worked on the plane, below is his response.
The drawings are showing 7 degrees total, 3.5 degrees per wing panel. This is measured from the datum line to the horizontal line. If you measure the bottom of the wing to the horizontal it is 5 degrees, 10 degrees total."
Last edited by cflorcke; 06-09-2016 at 07:39 AM.
06-09-2016, 07:41 AM
#4173
For those of you looking to modify the dihedral, I contacted Top Flite directly on what the dihedral of the TF FW-190 ARF is. Here's their response:
"I sent your question directly to the R&D employee who worked on the plane, below is his response.
The drawings are showing 7 degrees total, 3.5 degrees per wing panel. This is measured from the datum line to the horizontal line. If you measure the bottom of the wing to the horizontal it is 5 degrees, 10 degrees total."
Also, the scale dihedral for the FW-190 is 6.2 degrees as measured from the wing datum line. I found this at (http://www.rcgroups.com/forums/showt...=2#post4911625). I also have the book he pulled this from (Aircraft Archive: Classics of World War II) which has some great diagrams of the FW-190.The drawings are showing 7 degrees total, 3.5 degrees per wing panel. This is measured from the datum line to the horizontal line. If you measure the bottom of the wing to the horizontal it is 5 degrees, 10 degrees total."
What do you think TF's conclusion is? That their plane has the correct value, or incorrect value?
In my opinion It is wrong.....;
06-09-2016, 09:48 AM
#4174
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Top Flite FW-190 ARF Dihedral
Primarily I wanted to share the datapoint. Top Flite hasn't published it anywhere and I've only seen speculation that it's 2 deg. Secondly, I've seen the 5 deg number passed around as scale.
I don't think there is any question that the dihedral is not scale on the TF FW-190. The question for me was, what is the as built dihedral so I could properly design the shim and new wing joiner.
Visually, I can certainly see why the 2 deg number is out there. Attached is a rough measurement using one of the photos posted showing the top of wing, leading edge (close analog to wing datum), and TF's claimed wing datum dihedral.
The top of wing is approx 2 deg and the leading edge (close analog to wing datum) is 2.9 deg. Though this measurement is just an approximation, TF's 3.5 deg number appears overstated by about .6 deg.
I'm working on modifying the dihedral to scale on my FW-190 and will be measuring the dihedral as built by Top Flite. I'll post when I have the numbers.
I don't think there is any question that the dihedral is not scale on the TF FW-190. The question for me was, what is the as built dihedral so I could properly design the shim and new wing joiner.
Visually, I can certainly see why the 2 deg number is out there. Attached is a rough measurement using one of the photos posted showing the top of wing, leading edge (close analog to wing datum), and TF's claimed wing datum dihedral.
The top of wing is approx 2 deg and the leading edge (close analog to wing datum) is 2.9 deg. Though this measurement is just an approximation, TF's 3.5 deg number appears overstated by about .6 deg.
I'm working on modifying the dihedral to scale on my FW-190 and will be measuring the dihedral as built by Top Flite. I'll post when I have the numbers.
Last edited by cflorcke; 06-09-2016 at 01:41 PM.