WR FW190 Build - Dave B

[DaveB1]

Well here goes..

This will be my (very) rough representation of an FW190 flown by Siegfried "Wumm" Schnell

I 

 

I expected the kit to be confiscated till Xmas, but she's already started on the Xmas Cochet pattern I bought her so here we go 🙂

 

And we're off ....First cuts made on the beautiful foam wings to remove ailerons and the servo box. Need to find a better (hot wire ?) way to cut out the servo boxes

 

[DaveB1]

Dug the wing servo boxes out with a knife, so now my whole work area and clothes are covered in charged polystyrene bobbles that stick to everything ☹️.

Then used a length of sharpened carbon tube to twist through the wing to make a wire feed to these boxes.

It's been a year since my last build but feels good to be building again 😀

[dave parnham]

Hot soldering iron is good enough to get most of the foam out of the holes.

Is that servo box in the correct place? 

[DaveB1]

Hope it's in the right place, I'm certainly not moving it 🙂

[DaveB1]

Well this Butcher bird has drawn it's first blood ! Carving those wingtips is dangerous work 

[Chris Walby]

Buy a Permagrit, less hazardous to fingers

[RICHARD WILLS]

Ouch . I do that . However , little tip here for the eh, ....tips . (wing tips , not finger tips) 

Glue the tip block on rough. Get a big saw , like a 10" plus proper saw and lay the blade flat against the veneer . Saw off the remaining Balsa . 

Dead easy , fast and safe . 

Your servo boxes look in the right place . 

Second tip . before you cut the servo box holes . Offer up the Y lead you are going to use . If you dont , I guarantee you will be just too far out to plug the lead in .

Third tip , dont get blood on the wife's carpet . 😕 

[DaveB1]

All great tips thx. I acquired a knife set with a long carving blade so I thought I'd try it out ...doh, a saw would def have been better.

Ah well, no gain without pain.

Onwards - glued up the fuselage sides and crutch, (nice to have lots of clamps), shaped and rough sanded wing LE and tips, remembered to feed through the servo wires and glued the wings up, used pins and clamps to hold.

Gotta be the quickest wing builds I've ever done 🙂

[RICHARD WILLS]

Yes , and when you get the wiggly bits on , weigh them . Very light indeed. 

I'll stop butting in now and let you get on with your self harming agenda .😁

[DaveB1]

Managed to sneak a little more building

Fuz upper sides on, then decided I would add the balance horns on rudder and elevators

[Eric Robson]

I was tempted Dave but took the easy way out. 

[DaveB1]

Fuz corner triangular longerons in

Little corner fillets under the top fuz sides below the gun mounts

Block sanded the top rear sides ready for the top deck

Bit of adjustment and alignment to get the tailplane level with the wings

Actually remembered to place the elevator joiner before fitting a small triangular packer behind the tailplane for the rear of the fin to rest on (although perhaps I should have covered the tailplane first ?)

[RICHARD WILLS]

The cockpit sides are a bit low Dave , (my fault , I switched canopies moulds at the last minute . ) As shown on Eric's thread , you will need to add a little 1/8th balsa on the cockpit side rails . Can you tell everyone the rough dimensions when you do . 

Its a five minute job . 

[Eric Robson]

Cut approx 10mm from the sheet offcut the side came from and glue to the side perfect fit. Trim to suit canopy. 

[DaveB1]

Ok, no worries. Thx for the detail Eric

[DaveB1]

So I've spent most of the last couple of evenings 'faffing'  (a very necessary process in any project I take on, always with a pencil behind my ear until I put it down and loose it !).

Lot's of little tasks - Grooved and drilled for the elevator joiner, added the raised cockpit sides, first rough sand of the fuz, fitted wing dowel and hole for wing bolt, checked motor position and glued mount, cut and recut ABS parts and canopy, shaped bottom nose cowl block etc

Shaping the nose block :

Added some of the laser cut waste to extend the fuz sides up for the canopy. I added 16mm at the rear tapering down to 12mm at the front. This is probably a bit more than necessary but I can always trim back

Trial fit of the canopy

Glued in Motor mount (I added some blocks to space this back from the front former and help keep it square. Will likely add triangular fillets behind for added strength too.

I'm fitting a 4240 620 Kv motor that I previously used in a Maricardo. It'll swing a big prop, but I expect I'll need to play around to get the right pitch (on 4S)

 

I drilled a 1/2" square length of balsa for the wing dowel, cut a groove in the wing for it, then bonded it in with the wing in place.

from the

With the wing as square as I could get it, I screwed the pointed wing bolt through from the inside of the fuz to mark the wing before drilling.

 

Oh, and I just couldn't help it ( I said I was faffing)....I knocked up a dummy engine fan to fit in the cowl behind the prop.  I'm sure some of you 3D printing guru's can do a lot better, but I'm sure this will give the right impression when painted

[Lipo Man]

53 minutes ago, DaveB1 said:

So I've spent most of the last couple of evenings 'faffing'  (a very necessary process in any project I take on, always with a pencil behind my ear until I put it down and loose it !).

Lot's of little tasks - Grooved and drilled for the elevator joiner, added the raised cockpit sides, first rough sand of the fuz, fitted wing dowel and hole for wing bolt, checked motor position and glued mount, cut and recut ABS parts and canopy, shaped bottom nose cowl block etc

Shaping the nose block :

Added some of the laser cut waste to extend the fuz sides up for the canopy. I added 16mm at the rear tapering down to 12mm at the front. This is probably a bit more than necessary but I can always trim back

Trial fit of the canopy

Glued in Motor mount (I added some blocks to space this back from the front former and help keep it square. Will likely add triangular fillets behind for added strength too.

I'm fitting a 4240 620 Kv motor that I previously used in a Maricardo. It'll swing a big prop, but I expect I'll need to play around to get the right pitch (on 4S)

 

I drilled a 1/2" square length of balsa for the wing dowel, cut a groove in the wing for it, then bonded it in with the wing in place.

from the

With the wing as square as I could get it, I screwed the pointed wing bolt through from the inside of the fuz to mark the wing before drilling.

 

Oh, and I just couldn't help it ( I said I was faffing)....I knocked up a dummy engine fan to fit in the cowl behind the prop.  I'm sure some of you 3D printing guru's can do a lot better, but I'm sure this will give the right impression when painted

Wow. That fan looks brilliant. Very complex to construct from scratch. Chapeau!

[Eric Robson]

11 hours ago, Lipo Man said:

Triangle fillets are a must,  with the ground soggy at the moment my motor mount came loose on landing. 

 

[leccyflyer]

Nice work Dave - I don't think that there's anything as pleasing or inspiriting as seeing a wee pile of balsa shavings from a David's plane, early on in the proceedings. I save them for home made firelighters.

[DaveB1]

Agree, takes a bit of time to get these little planes sharpened, flattened up and set, but that little effort tuning is well worth it as they can be so satisfying to use

bow't time we had a fire:

[RICHARD WILLS]

I can understand Dave using David's plane but why wouldn't Brian have his own ? 

Might be worth getting a Hamster . 

[Ron Gray]

Nah, hamsters tend to nibble the balsa, better off with a beaver (ooh, Matron).

[DaveB1]

Bit more building and more faffing with details today 🙂

Fitted the ply cowling. Several trials, much muttering and glued up fingers, but it's in place. Nice fit around the top and front but some gaps at the bottom by the wing. As this is the landung surface I'll go back and fill this.

Worked on the battery hatch (really neat design that I'm sure a lot of thought / design work went into). Got the ply hatch and latch to fit / work smoothly, then trimmed the ABS to fit. Used canopy glue to bond together.

I've added a top deck at the rear of the  cockpit to simulate that on the a/c and to provide some stiffness for the canopy. Oh, I also cut down the exfra sixe pieces I'd added below the canopy - these are now 8mm high at fwd end and 15mm at rear

Bit of detail abive the instrument panel

and the started on the wing fillets. I think these can make a real difference on a warplane so tried cutting and shaping the rear sections out of an old ali coffee tin, then used the triangular balsa technique for the rest.....think I'm going for the heavyweight prize on this build 😄

[Silver Wolf]

Looking good, like the little detail above instrument panel 👍

[Lipo Man]

3 hours ago, Silver Wolf said:

Looking good, like the little detail above instrument panel 👍

Me too! I’ll definitely try to copy that! 👍

Great idea!