RE: KMP / YT FW-190 Build Thread (Full Version)

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ticketec -> RE: KMP / YT FW-190 Build Thread (10/13/2007 2:13:09 PM)

Hey Redback,

Thanks fro the measurements.

Hey Alanc, are these gear available separately? i tried an Aussie store that sells the kits, but they said no, not available separately. hope you aussie blokes don't bend your retracts then.....

Thanks

dave



dvs1 -> RE: KMP / YT FW-190 Build Thread (10/14/2007 6:21:36 AM)

Have to admit I haven't progressed much in the last few days with my plane I have too many things going right now.
I did however start to build a semi-scale drop tank rail to be mounted to the underside of the wing. The kit does not come
with one and it would be a shame to mount this tank to the underside of the wing without something. I went through some
scale pics and drawings and came up with the basic shape. Like I said it is semi-scale so don't go ballistic on me.
Here is a pic after the first glass and epoxy layer.



mobyal -> RE: KMP / YT FW-190 Build Thread (10/15/2007 11:11:24 PM)


quote:

ORIGINAL: mobyal


quote:

ORIGINAL: H8Basher

My gear looks exactly like the ones in the pic, and has the correct angle machined into the strut for the axle.


Yesterday morning I ordered the Sierra retracts w/ the options.....
Anyone want me to post pics when they come in?


Ordered the Iierra Retracts Friday am and they came in today! The kit retracts got here Fridsay. Attached are some pics of the two sets. The Sierra retracts are, not surprisingly, much sturdier and better-machined and wll undoubtedly do a better job for me as I fly off grass that's not particularly smooth. Plus the looks! LOL But the kit retracts sure look like they're adequate to the task. "you pays yer money and you takes yer choice...." as the man says.



mobyal -> RE: KMP / YT FW-190 Build Thread (10/15/2007 11:15:03 PM)

OOPs! Messed up the attachment. First two are the two sets. Sierra and then the kit gear.



mobyal -> RE: KMP / YT FW-190 Build Thread (10/15/2007 11:17:50 PM)

Here they are side by side.



dvs1 -> RE: KMP / YT FW-190 Build Thread (10/16/2007 1:02:44 AM)

To me it looks like the KMP struts are actually more scale in appearance than the Sierras except for the stroke distance. Every FW-190 I have
seen has fairly straight gear not tapered and does not have scissors.



ticketec -> RE: KMP / YT FW-190 Build Thread (10/16/2007 1:51:15 AM)

Hey dvs1

The Fw-190 does have scissors of the full sized one, but your right, the legs do not taper down

thanks

dave.

P.S. did you take that pic of the Fw at Duxford? if so, we would have been there winthin day of one another because i understand that she was only there for a short period of time.



dvs1 -> RE: KMP / YT FW-190 Build Thread (10/16/2007 2:48:36 AM)

quote:

P.S. did you take that pic of the Fw at Duxford? if so, we would have been there winthin day of one another because i understand that she was only there for a short period of time.



No, I think I got that pic off RCU I have just searched the internet for pics for technical reference. Wish I had seen the one in the pic though, because I would have taken about at least 300 digital pics.



dvs1 -> RE: KMP / YT FW-190 Build Thread (10/16/2007 2:50:35 AM)

Oh and I forgot to thank you for the more detailed gear pics too.
Thanks ticketec



ticketec -> RE: KMP / YT FW-190 Build Thread (10/16/2007 3:10:39 AM)

No probs mate!

Yeah, I nearly jumped out of my skin when i heard one of the guys who worked there say there was something special in hanger 3[;)]

Unfortunately, because it was a flying aircraft, the access arround her wasn't as good at the static display aircraft, and so it was a little harder to get great shots of her with my equipment.[:o]

Some more for you to enjoy.

thanks

dave




mobyal -> RE: KMP / YT FW-190 Build Thread (10/16/2007 4:49:11 AM)


quote:

ORIGINAL: dvs1

To me it looks like the KMP struts are actually more scale in appearance than the Sierras except for the stroke distance. Every FW-190 I have
seen has fairly straight gear not tapered and does not have scissors.


OK. If you say so....



dvs1 -> RE: KMP / YT FW-190 Build Thread (10/16/2007 6:05:32 AM)

quote:

OK. If you say so....



As I said "TO ME."
That is my opinion your entitled to yours.



mobyal -> RE: KMP / YT FW-190 Build Thread (10/16/2007 2:04:19 PM)


quote:

ORIGINAL: dvs1

quote:

OK. If you say so....



As I said "TO ME."
That is my opinion your entitled to yours.


No sissors, huh?
OK. If you say so....



Redback -> RE: KMP / YT FW-190 Build Thread (10/17/2007 1:24:02 AM)

Spent some time contemplating my (ESM) retracts last night.

Can't figure out why the axles are so long, even allowing for the fact that you need a spacer inside there's still a lot of axle before the thread on the end for the retaining nut.

Unless I can see any reason not to I'm planning to cut some off and either cut a new thread or use a normal collet. Also, the spacers referred to in the instructions didn't seem to be included, all I had were 4 collets which didn't fit, presumably intended for the fixed U/C.

Terry



H8Basher -> RE: KMP / YT FW-190 Build Thread (10/17/2007 1:59:36 AM)

Yeah, I noticed the same thing [8|]

But on a different note..... My Saito 170 radial arrived yesterday [:D] I qiuckly checked clearance in the cowl and there is plenty of room for it.

I have made up a stand to run it in with, and will hopefully run a few tanks through this evening....... I'll let you all know how it goes......



NoFlaps -> RE: KMP / YT FW-190 Build Thread (10/17/2007 8:29:11 PM)

Anyone have a "actual" final weight on this plane RTF ?



Redback -> RE: KMP / YT FW-190 Build Thread (10/18/2007 11:22:58 AM)

Hooked up one of the retracts tonight and hit an apparent problem. With the wing the correct way up the gear only raises very slowly and does not make it all the way into the well. This is with the wheel on but not the wheel cover.

The gear seems to drop OK, and with the wing the other way up (and without the weight of leg + wheel to contend with) comes up OK.

This is my first experience with springairs, had robart air up/down in my (sadly departed) TF Corsair. Couldn't find anything in the instructions as to what pressure these things work at, but was trying them at higher pressures than were necessary for the Robarts to work reliably. As far as I can tell the mechanism is working OK and is not binding.

Anyone else had any problems or able to give me any advise?

Regards


Terry



BigRetracts-RCU -> RE: KMP / YT FW-190 Build Thread (10/18/2007 11:56:29 AM)

Redback,

My thoughts are you will have to roll the plane over after take off to raise the gear. !-(
With the air cylinder fighting the internal spring, weight of the wheel, long strut and then with the wind
resistance, you will need a lot of air pressure to make them retract fully. And you will most
likely only get one up cycle. What a shame.



NoFlaps -> RE: KMP / YT FW-190 Build Thread (10/18/2007 3:24:57 PM)

I'm in agreement with Bigretracts-RCU.
The spring shouldn't be that powerful though that you're fighting it with 100+PSI, you can fihgure that once the plane has wind resistance in the air, the retracts will be even less effective.
If you have the gear door covers on, then forget about it, those things are like brakes when you have poorly operating retracts.
I have to take the door covers off soo many times and that drives me mad.
have you tried using some of the spare parts from your Corsair (regulator) on this plane to see if you can make them more effective ?



Sturtz -> RE: KMP / YT FW-190 Build Thread (10/18/2007 9:55:18 PM)

Do you have the lines restricted ? Kink in the line ? Is the line/valve setup correctly ? Are you using the small air tanks provided with the SpringAirs ?
Mine have to be restricted so they don't blowout the wheel wells .



NoFlaps -> RE: KMP / YT FW-190 Build Thread (10/18/2007 10:51:48 PM)

Old KMP retracts had faulty o-rings which could cause poor functioning retracts, but the new ones should be flawless.
My typhoon retracts worked very well, but those babies were very heavy.
even so, they nearly needed restrictors because the the force they had when retracting or extending.



Evil_Merlin -> RE: KMP / YT FW-190 Build Thread (10/19/2007 5:54:48 AM)

quote:

ORIGINAL: dvs1

To me it looks like the KMP struts are actually more scale in appearance than the Sierras except for the stroke distance. Every FW-190 I have
seen has fairly straight gear not tapered and does not have scissors.



The gear are not tapered, but they sure as heck are not just a tube. The FW 190 gear struts had many reinforcement sections. The top 1/4 or so of the gear at the top is thicker than the main strut which extended about 1/4 the way down the gear to the downlink reinforcement area which was a little thinner itself than the top section, but thicker overall than the primary strut. The next 1/4 of the gear was the same diameter as the 2nd 1/4. This then became the oleo area which DID have scissors. After the oleo the strut was a little thicker than the primary for the wheel axle reinforcement. Thus the struts included with the KMP kit are just cheap. The Seirra gear ain't scale but its a hell of a lot better than the struts included with the KMP kit. I won't even touch on the retract mechanism itself as anyone can tell the Seirra gear is far superior. The new set of gear that Serria is making for the KMP kit are quite nice, and while not 100% scale are worth every penny over the lower end stuff KMP includes. Please note the 1/4s are just estimates, if anyone wants the full dimensions I will be happy to provide them.

Here is the picture of the retracts made for the KMP 190
[image]http://www.sierragiant.com/images/KMP%20FW190.JPG[/image]

Here is the real thing:
[image]http://ipmsstockholm.org/magazine/2004/10/images/detail_fw190a8_50.jpg[/image]


Take into account that the Serria gear is unpainted and the bar stock has a tendency to reflect more making the sections look slightly deeper than they really are.


Also for whatever reason, the KMP stuff from Serria doesn't look as good as the stuff they make for the bigger birds.

[image]http://www.sierragiant.com/images/FW190-Gear.jpg[/image]



Redback -> RE: KMP / YT FW-190 Build Thread (10/19/2007 8:54:05 AM)

Played around a bit more and now have the gear coming up fully with the door fitted. Not too confident that it will do so with wind resistance to contend with, especially in view of the shape of the doors. No kinks or restrictions in the lines, I have a very basic setup (haven't joined the wings yet). Am using the supplied air tank at the moment, I have a larger one but don't see that it will help at present as it doesn't seem to be dropping too much pressure on a cycle.

Will press on and see how it works with both wheels.

BTW, when fitting the ESM retracts consider fitting the gear doors to the legs before marking the holes for the retracts. The doors are shaped so they only fit in one position sideways, so fitting them first will ensure best fit in the wing cutouts.


Terry



Sturtz -> RE: KMP / YT FW-190 Build Thread (10/19/2007 5:15:50 PM)

Terry,,, been to the Jacaranda Festival in 99 I think it was. Got handed a rum drink with a sugar cane for a straw. [:D][:D]

Good to hear you got your legs cycling proper like. Gear doors have always been one of my least favorite projects. A very slight bend after a landing can cause 'em not to close properly. I recently found a way to keep them from getting loose. A few plugs of ShoeGoo between the doors and struts. Won't work on planes with doors that sit further away from the struts,, "like a Zero". But really holds well even if you loose a screw from the ring mounts.



The MacDaddy -> RE: KMP / YT FW-190 Build Thread (10/19/2007 9:46:27 PM)

Does anyone recognize this manufacture? It's on Ebay...

http://cgi.ebay.com/Focke-Wulf-FW-190-Nitro-Gas-RC-Airplane-ARF-70-NIB_W0QQitemZ250162039606QQihZ015QQcategoryZ19164QQcmdZViewItem#ebayphotohosting


dont feel like paying 60 bucks for shipping

I've been hoping for H9 to build a FW, they just keep the allies planes coming..... whatever.

Mac



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