[Charlie C]

I have been an extremely lucky boy.

One of these turned up today with my name on it:



Although we had it all out in the shop to check everything is OK, (As we do with all models), I couldn't wait to it it home and have a touchy feely gander.

Just stuck a few bits on to get an idea of size:



Its a bit big, fills half of my obviously inadequate workshop:



Its pretty light. In fact I was surprised how light, till I took a gander inside. That's not a criticism though as it all seems well thought out and well glued together. I will be going round it all with some thin ZAP though.





Last photo for tonight, the office. Again, not perfect scale by any means, but a big improvement on the usual pilot bust and flat dash ARTF.



I was expecting to find a bright shiny film finish but it appears to have been filmed and painted. There are panel lines which don't stick out a mile and most of the detail is already on.

I have asked for a weathering master class from Mudders on this one as I really want it weathered, and weathered properly.

Luckily he has agreed. Cheers Mudders 

The retracts, unlike the early Black Horse efforts are well made and beefy enough and all the retract bits are supplied, as well as decent looking control surface M3 linkages.

All in all, I'm pretty chuffed

I have a Z62 just dying to get itself planted in the front. The prototype used an OS 55GT which looking at the video was somewhat eerrrrr overpowered. I have had the chance to put and evolution 58 in it, again, far to much power for this model. I think a Z62 will be just about right  and reliable.

So, there you go folks.

Do you want a build thread 

Charlie C

[styk]

Yes Please

[NSS]

Subscribed.
 

[Lee Wilson]

Watching

[nickr100]

looking forward to seeing this one develope   

[Kjell Aa]

Do you think it would fly with this one?
http://www.hobbyking.com/hobbyking/store/__17164__Contra_Rotating_CR50L_Brushless_Outrunner_Motor_inc_Radial_Motor_Mount.html

If you could find some suitable propellers for it?

Kjell Aa

[rcfanuk]

Subscribed, love the Wyvern

Steve

[Dizz]

Nice!  Yes please to a build thread
Looking at the construction do you think it is suitable for conversion to electric power ?
Cheers
Pete

[Charlie C]

I like ugly , boy is it ugly. 

Specs.

88" Span
20lbs target weight.

"All" I have to supply is engine and radio gear.

Aiming for Specktrum Powersafe and Hitec 645s all round. If they fit. Going to semi-retire the Bearcat to nick some of the servo's as the Cat badly needs a paint job.

50-55cc, buts its getting a Z62 mag. I intend to do a bit of work on the engine box as to me it just doesn't look 55/62cc proof.

Its probably me just worrying though.

Need to do a bit of grovelling to SWMBO but I hope to have it ready for the Mudders treatment and get it flown before Barkston.

Charlie C

[Charlie C]

Nice!  Yes please to a build thread
Looking at the construction do you think it is suitable for conversion to electric power ?
Cheers
Pete

I reckon it could be done. Loads of room for batteries.

However, I know nothing about electrification.

Charlie C

[Charlie C]

To continue,

Had time for a proper play this evening. Got it all out of the box and stuck it together. It fits in the workshop, after I have stuck a wing out through the door though 





I had to spend an hour on the wings and wing tubes. At first they just wouldn't fit, but a bit of proper chamfering on the wing tube and some mucking about got all the sticky out bits on and pointing in the right direction.

Nice bit of flappage as well:



Mudders has specifically requested photos of the trotters, so here ya go Mudds:

Main trotters:



Back end trotter:



Ailerons, Elevators and Rudder come pre hinged with proper hinges:



Right then, question time.

I have the choice of two engines. A ZG62 mag, or an Evolution 58. The 58 has stacks of power, probably to much to be honest.



The problem is, and probably the realistic decider is fit.

The cowl is huge. You could hide a baby in it  , but, because of the long front tube to the propeller, they are both to short to the prop driver.

The ZG is 5mm to short:



The Evo is 15mm to short:



The reason I say to short is that the front of the engine is hard up against the lower lip of the cowl. I don't want to hack away at it as that will spoil the look.
Also, the ZG fits inside with a little bit of room to spare where as the Evo will need a hole hacking out for the plug and plug lead.

On that basis, the ZG is self selecting.

The question is, should I hack a hole in the inner front of that lovely cowling, or, should I make up a prop driver extension, or even knock up a longer prop driver.

I know that extending the prop driver is probably not the best idea in the world, but has anyone out there done it and did it make any real difference.

Your comments, as always are very welcome 

Charlie C

[Cornish Pixie]

I would fit the 62 just for total reliability, ease of starting and most important I like them in scale models.
How long is that driver. They do a long one for the 62, though the one you have looks long.
You could easily make one  or a thick spinner back plate would do the same thing , you could easy make that on your lathe

Si

[Charlie C]

I would fit the 62 just for total reliability, ease of starting and most important I like them in scale models.
How long is that driver. They do a long one for the 62, though the one you have looks long.
You could easily make one  or a thick spinner back plate would do the same thing , you could easy make that on your lathe

Si

That's what I was thinking Si. Effectively a 5mm spacer, either under the prop driver hub, or even on the boss.

Just not sure about the principle of extending it. As you say, it has the longest prop driver on it already.

Charlie C

[idigbo]

I've used longer prop drivers on Zenoahs with no problems as long as all is balanced. Mudflaps Tiger Moth has a long prop driver, longer than commercially available, my Raiden has and my Tigers have had the longer than standard ones too. If you know someone that could knock you one up then I'd say go for it without reservation

Ian.

[Charlie C]

I've used longer prop drivers on Zenoahs with no problems as long as all is balanced. Mudflaps Tiger Moth has a long prop driver, longer than commercially available, my Raiden has and my Tigers have had the longer than standard ones too. If you know someone that could knock you one up then I'd say go for it without reservation

Ian.

 

Cheers Ian, that's the answer I was hoping for.

Now the, how do I go about that I wonder 

Charlie C

[Pup Cam]

Now the, how do I go about that I wonder 

I reckon your best bet is to find someone with a lathe and ask them to turn one up for you - job done

Alan

[Dizz]

I reckon it could be done. Loads of room for batteries.

However, I know nothing about electrification.

Charlie C

Thanks - got me thinking :-)
Pete

[Norfolk'n'Good]

No reason a spacer cant be made up as long as you make the locating protrusion into the driver and corresponding hole in the other end to take the flywheel machined upstandy middle bit it should line up perfectly just needing longer bolts.  I would bolt the engine to the firewall with it sitting at it's best leaving room for the head against the cowl and make the prop driver to fit whats needed.

[Charlie C]

No reason a spacer cant be made up as long as you make the locating protrusion into the driver and corresponding hole in the other end to take the flywheel machined upstandy middle bit it should line up perfectly just needing longer bolts.  I would bolt the engine to the firewall with it sitting at it's best leaving room for the head against the cowl and make the prop driver to fit whats needed.

Not quite sure what you mean Shaun.

The plan:

Bolt engine into position.

Bolt cowl into position.

Measure prop driver deficiency and make up a spacer of the appropriate thickness to bolt twixt prop driver and fly wheel. Fitting longer bolts to suit naturally.

Charlie C

[steamysheep]

Is it done yet? 

Will pop over when the dust settles

[Norfolk'n'Good]

IIRC and I have not looked at one for a while but the driver has a hole that located accurately over a protrusion on the flywheel so if you machine a indent in the spacer and protrusion to go in the driver you will centrally locate it perfectly just needing 5mm or whatever longer bolts to put it on than normal.

[Charlie C]

IIRC and I have not looked at one for a while but the driver has a hole that located accurately over a protrusion on the flywheel so if you machine a indent in the spacer and protrusion to go in the driver you will centrally locate it perfectly just needing 5mm or whatever longer bolts to put it on than normal.

Ahhhhh,

I see now 

Ta muchly

Charlie C

[Charlie C]

A bit of an update for you. Nothing to exciting though, I'm afraid

First job. Tidy up and throw an old white sheet over the bench to hide the rubbish I couldn't be bothered to move. OK, its also to stop the bits from getting scratched.



Decided to use the manual to stick it all together. If there are any anomalies (Posh word for C**k ups) they will get passed back.



Checked out the hardware pack. Impressed. All the bits are decent quality. I have not seen flight control surface linkages like these before. They seem pretty good so I'll use them.



This is an aileron one fitted. Nothing special to get the servo in, suffice to say all the hatch mountings are already in. Even the 2mm holes for the hatch screws are laser cut and everything just fits. So far.



The flap servo is exactly the same so on to the undercart. Black Horse undercarriages have not have the best of press in the past. This lot looks pretty well made. The wing bearers are pretty substantial as well. Hope they are Cox proof 



Right then. First problem. The undercarriage up nipple on the ram is directly above a wing rib. I hope you can see from the photo.



Its an easy enough fix. 10 minutes with the dremel and I had a bit carved out of the rib and a stiffening piece of light ply attached. No big deal, but a little bit annoying.



Leg fitted. I like the idea of captive nuts on the back of the bearers. Just a case of screwing the rectract into position and and feeding the pipery through to the wing root.



Never had a model fitted with inner doors before. Its only sprung loaded with a bar glued to it for the wheel to catch and push on but it seems to work.



The fit of the doors could be better when closed. I shall have a play with them once both wings are fitted out and try and get a better fit.



Having said that. Would you notice the fit as its flying past you. If Pylon was flying, you would have to lie down to even see them 

That's all for tonight.

Charlie C

[fokker]

watching this with interest . i keep looking at the macchi mc200 and would be interested to know if the retracts etc are the same quality

[Charlie C]

watching this with interest . i keep looking at the macchi mc200 and would be interested to know if the retracts etc are the same quality

You are not the first to ask Geoff.

I will have a look and report back 

Charlie C

[bluescoobydoo]

the retracts are different in the fw190 they need to be moded to get them to work and the units are made better on the wyvern from the look of it

[Charlie C]

I have tried to have a look at the Sea Fury and Macchi retracts and mountings.

Trouble is that they are so well packed that it takes half an hour to get into them, that's without undoing all the fibre lacing and stuff inside and to be frank. Its sooooo busy that we don't have the time.

All boxes get opened and the contents checked before dispatch so I need to be there at that time.

The guys say that from what they have seen, they are all of a similar standard, so I thought I would give you a few close ups of the Wyvern retract mounts.







If its of any help, I think they are a dammned sight better that the mountings in my Mustang. (before I modded them that is)

Its only my opinion though.

Hope this helps

Charlie C

[Charlie C]

Could do with some advice here chaps.

The instruction tell you to attach the fin to the rear fuselage by mounting onto two tubes, like so:



Then insert a 3mm bolt through the fusalge, into and anchor nut built into the fin and thats it. Its just below the servo.



I am not that comfortable with this set up. (The tail planes are the same BTW) but, I don't normally play with ARTF's at this sort of size.

I am considering epoxying them on as well.

What do we think on that 

Anyones experience in these things would be greatly appreciated.

Charlie C

[Norfolk'n'Good]

Looks fine to me as per plan.  My Pups tailplane is held on with a single M3 bolt through the rear with a tongue on the front.  Granted it does have rigging wires to but the pull on your fin should be in sheer so a singlew bolt should hold it down no problems.

[Mudders]

I agree with NFG, The grub screws stop it from sliding off and the tubes take the loads 

[JohnMac]

Nice looking model. I have long had a thing for the Wyvern's purposful lines. Just one thing from the photos, it looks as if the wheels are too far back. The real Wyvern's wheels were well ahead of the LE and certainly were not attched to the gear doors, which hung straight down. If I am right the ground handling will be a bit of a bu***r.

[Charlie C]

Nice looking model. I have long had a thing for the Wyvern's purposful lines. Just one thing from the photos, it looks as if the wheels are too far back. The real Wyvern's wheels were well ahead of the LE and certainly were not attched to the gear doors, which hung straight down. If I am right the ground handling will be a bit of a bu***r.

No idea John.

Time will tell. The ground handling looked ok on the pre-production video.

Charlie C

[steamysheep]

. If I am right the ground handling will be a bit of a bu***r.

Nah, the aircrew will have no problem with ground handling..... 

[Winchweight]

Nah, the aircrew will have no problem with ground handling..... 

And if we do there's nothing the grubbers like more than polishing out a few scuffs in the jolly old paintwork. Keeps them humble.

 

[Mudders]

 

[Charlie C]

And if we do there's nothing the grubbers like more than polishing out a few scuffs in the jolly old paintwork. Keeps them humble.

 

Bl**dy Aircrew,

Hate Crew Chiefs and groundcrew but can't live without em 

Charlie C

[Winchweight]

  you love us really!

[Charlie C]

you love us really!

Really 

CC

[Charlie C]

Did a bit more yesterday evening.

Decided to fit the finlets onto the tailplanes having installed the servo's.

First off, stripped the film form the tailplane and the finlets using a soldering iron.





Some raggedy bits round the edges, just needs a clean up and job done. The fit is excellent, they just needed pushing into place and then attacked with thin cyno.



The next bit needed some thought. 

To keep the Z62 inside the cowl I needed an engine mount that wasn't a standard item as it needed to stand the lump exactly 17mm off the fire wall. There isn't a mount with those dimensions available. I'm sue you can guess what happens next:



I had some alloy of the appropriate diameter so away we go and knock one up.



Not a bad fit:



Going to try and keep it all, including the exhaust inside the cowl.

Onwards

Charlie C

[Norfolk'n'Good]

Is that a counterbore on the wrong side I see there