Painting

The last photo is the only one that depicts colour accurately. The rest look like beige. It is actually a fine metalic light grey with a low gloss.  It looks 30's aviation "Old Skool" and I am happy as can be.

I used Dupont 2K and super etch primer.

Quantities

On the forum a poster says the RV-8 is 310 ftsquared. I used a 5 litre tin.

UPDATE: I had some touchups to do on the wing tips and wheel fairings. The paint appeared as good as new. Seems to be going off OK. Nearly exactly two years since the buy by date. Dunno what the specs are. I am just about getting the hang of painting now.

Looks like an airplane.

Putting the prop cowls and wheel pants on looks speccy. There are still plenty of little details that need sorting out yet.

 

Steam Guages / Oil Pressure Port

This caused a fair bit of angst. 

 

By the time I had identified the oil pressure port I had already put the engine mounts/Lord Mounts / engine on the firewall. The oil pressure takeoff is in a bastard spot just under the top engine mount and it is seized.  You cant install an oil pressure fitting in that place without removing the engine anyway. You need a 45° fitting there and you can't install a 90° because of interference with the engine block. Heat from a blowtorch gently applied is the go for loosening the plug.  I used a butane torch till the paint scorched and smoked it took some  torque but cracked ok.

You then need to tap the port since the NPT taper thread will only do up a few turns. Finish with a non hardening Loctite 567 type sealer. 

Reinstalling the engine is a real chore unless you hang the engine from the block and tackle and put the fuselage straight and level. It will either fight like hell or go straight on. Be pateint and get the job lined up right.

37 degree / spherical insert ?

---

I have a Fuel and Oil Pressure Gauge. I want to plumb them using a 37 degree flared fitting. They have a concave seal in the back of the guage male fitting.

I was thinking about spinning up a male 37 degree / spherical brass insert and running a hole through the middle on my mates lathe but it seems extraordinary and fiddly operation.

Is there a better way of doing this ?

RV-4 Fuel Pump Overflow Fitting

RV-4 Fuel Pump Overflow Fitting. Even though I bought the special fuel pump overflow fitting that Van's sells, I had no clearance between the fitting and the firewall.  I hit the firewall with an angle grinder and gain 1/4 inch strong clearance without causing damage to the underlying brackets.

Gascolator - where to mount it?

Empenage

When I fitted my HS I found that the inboard edges interfered with the fuselage when it was bolted on. Had I allowed 1/4 inch extra they would have been fine. As it is I had to file out the flanges to prevent it chaffing on the fuse skin. I dont have a photo but can take one if it would help.

It took a day and was quite fiddly getting everything lined up but I got the empenage installed.

Lining up the elevator and rudder rod ends and installing the bolts is hell fiddly too. I dont think there is an easy way. The camlock instal tool is hand for putting over the bolts and squeezing them into the bracket / rod end  hinge points.

TO DO : The two forward facing bolts and an extra hole / bolt need to be installed / torqued.  Gonna do it at the same time as I fit the pitot static. Chains for the tailwheel steering.

The fuselage gets narrower every time I crawl in. Hopefully this will be the last.

sb06-9-20.pdf               Trim Cable Anchor   Service Bulletin

WD-415-1              TRIM CABLE ANCHOR            $8.60

   Bugger ! This is a PIA - I just got done installing the elevator and would rather not mess with it. If, however, that were to snap off it could lead to a fatal loss of control. It really should be retro fit.To make matters more complicated the trim cable is too short by about a half inch at the quadrant. The turn into the HS end rib is quite sharp. If slack were found in the cable it would mean securing the quadrant end to the forward not the aft section of the spar carry through bulkhead - nasty fiddly stuff.

The elevator control stop setup is shown in DWG 30 and the limits are 30 up / down.

Brakes

Ordered : RV-4 BRAKE CONVERSION PLASTIC TO ALUM CONV. 

Plumbed from the brakes to the master cylinders. Now need the elbows to go on the low pressure side.

Now to figger out how to bleed the system.

Prop / Spinner

Got the prop and spinner mounted this week end quite a fiddly time consuming job. Lots of cut and try.

A big cheerio to Mick Muller over in Sheparton and Jodie for helping me out with this prop. Drinks on me guys !!

Invincible Airscrews Pty. Ltd.,

(David Green & Ken Adams)

See note P.O.Box 62,

Mortdale, N.S.W. 2223,

Australia

Tel/Fax : +61 2 9153 0764

Email: dagreen@optusnet.com.au

Fax or mail communications are preferred

Markings:

Lycoming O - 320

DRG NO 30 - D - 68

D   5.75' P 5.75'

NO I A 8343

NOV 1998

The spinner is a sod to paint as it seems to perfect shape and size for sags and runs. Best to lay it on it's side and do it in a couple of stages.

Canopy REDUX

Since I busted my canopy.

I got  Todd's Canopies to build me a new canopy which set me back $360 USD. It looks great !! I asked him to build it a little taller so as I had a bit of head room. The old one I was hitting my head when sitting tall.

 

Todd Silver is a delightful bloke to deal with. Very enthusiastic and helpful.

The next challenge will be determining how much of the old canopy frame will be usable and how to fair off the rear end. I have seen them done by squaring off the skin rear of the canopy from bow leaving an inch or so of overlap and simply weather sealing a aluminum strip over the perspex to the aft of that to the top of the fuselage. Much as guy do with the wing root fairing

Sika 295 UV.

Leaking Fuel Tank

I filled up the fuel tanks with water to leak test them. One of them leaked through the back of the fuel quantity sender. No problem I will replace them both - they have been lying around a while. The other leaked out of the outboard rear baffle seal with the rib. Nasty.

There is a thread on Van's Airforce - http://www.vansairforce.com/community/showthread.php?t=95262&highlight=leak&page=2 dealing with prophylaxis - rather fiddly and more likely to cause problems IMHO.

However it does have some input from pros and alludes to industry practice. There are products that do this task and apparently an A and  B class sealant. B is a top coat apparently. The Tech specs are here and time to do some research I guess.  http://www.ppg.com/coatings/aerospace/sealants/sealantsproducts/Pages/FuelTank_StdTech.aspx

Fairings

Empenage. I bought a new one for the empenage - "RV -4 Fairing Subkit".  The fairing i bought from Van's wont fit.. The Horizontal Stab line is about 3/4 " too high meaning it wont line up. Essentially it is designed for a larger diameter than the  RV - 4. To trim it would mean the HS trim  flanges would meet up about 5 inches aft the trailing edge. The top fairing for the rudder  / Horizontal stabilizer has F - 868 marked  up on it and is nowhere close to fitting on the RV - 4. Is it possible Vans accidentally sent me the empenage fairing for an RV - 8 ?  Even if they did I would expect the two to be more or less congruent.


The fairing subkit comes with all the fairings except the gear legs. The glass work is miles better than the original kit.


Gear Leg Fairings :


I bought some epoxy from :


Fibreglass and resin supplies
Charlie Irwin
111 kew St
Welshpool


08 9361 8316


Charlie sat me down and told me how to use the epoxy emphasizing temperature above 15C and  to get the ratios as accurate as possible. The analogy he uses is nuts and bolts a surplus of one leads to unwed units of the other.


I taped and Plasticined the contours on the cowl to gear leg fairings. This is prior to sculpting with a half moon shaped plastic card. Still pretty bumpy.

UPDATE: I completed the glass work on the fairings this weekend.   What remains to be done is to use a filler on the fairings to make the surface smooth. I will do this at the same time as I glass the air scoop onto the bottom of the cowls. The only nasty thing about the job was removing the wretched aluminum tape  from the components - it sticks like crazy and fragments when you go to peel it off. I busted a fingernail on the job.

 It proved to be quite easy except that the aluminium tape is a mongrel to get off - a real nail buster. Fairings half done - need to get countersunk washers and fixings for the upper fairings - these will probably be blind - maybe a job for rivnuts? Also need to use body filler for the aesthetic smoothness.

Conclusion.


This job is time consuming and messy. Now I would DEFINITELY buy them and save the time. I am however satisfied that I learned a bit about glassing. I would hate to have launched into glassing on the new airscoop with out doing this job as a primer. Now I am fairly confident I will get a satisfactory job done and not risk having to order a new cowl by stuffing the job up.


I would hate to build a whole airplane out of the stuff.

Persevered with the wretched things  with lots of sandpaper and sitting round on the front porch. 

They don't look to flash but neither Kayt nor I could be arsed with them any more. 

Cockpit and Instrument Panel

I have decided to move the fuel tap - it is easier to get at there and there is more room to do the plumbing. I have mounted a lockout similar to that used in mining equipment. the master electrical isolator is right underneath it. More in the details in the electrics section.

I biffed off the intercom since the ICOM A 210 Radio has one. In it's place I put on the V/G Meter  - wouldnt you know it I got the holes in slightly the wrong spot. There's 20 minutes with the needle files.

To Do :

Mount Hot air Control

Mount Cold air Control

Engine O-320-E2D

O-320-E2D

150 hp (112 kW) at 2700 rpm, Minimum fuel grade 80/87 avgas, compression ratio 7.00:1. Similar to E2A but with Slick disposable magnetos and 0-235 front. Used in the Cessna 172 I to M models.

General characteristics

• Type: Four-cylinder air-cooled
• Bore: 5.125 in (130.18 mm)
• Stroke: 3.875 in (98.43 mm)
• Displacement: 319.8 cu in (5.24 l)
• Dry weight: 244 lb (111 kg)

• Oil dipstick / case needs trimming and the stick recalibrating. Fuel pump fitted.
• A thread on installing The Lord Mounts http://www.vansairforce.com/community/showthread.php?t=19952

• ?? Bolts holding the FAB to the carby are nylocks should they be castellated and wired ?? YES.

http://www.sacskyranch.com/lycoming.htm

• ?? diaphragm seat ring has an overflow fitting of some kind. Is this plugged?

• ?? Locate and remove oil in / out plugs from motor to cooler.??

• ?? What does the knurled screw above mixture bellcrank do??

• ?? Crankcase Breather ?  Just a pipe overboard or a air oil separator?
• 
  

Firewall Forward

Oil Cooler

I  mounted it horizontally with the bottom bolts on the 1/8" angle backside of firewall. 2' of SCAT tube just goes neatly to the pickup on the rear of the baffles. 

RV-4 Fuel Pump Overflow Fitting. 

Even though I bought the special fuel pump overflow fitting that Van's sells, I had no clearance between the fitting and the firewall.  I hit the firewall with an angle grinder and gain 1/4 inch strong clearance without causing damage to the underlying brackets.

The Fuel Fitting on the inlet fuel pump inlet is really loose - gotta check locktite will be all that is required to make it secure.

Firesleeve and a heat shield / p clip to keep the fuel line off the exaust.

Cowls and Baffles.

Despite a lack of posting, the Christmas Hols didn't see a complete hiatus in building.

There was some fairly robust nudging of the cowls to try to get the wretched things tidy and to mount all the cam locks.

Camlocs

 

Wings

Missing Spar Bolts


3 x NAS 1306 - 30


2 x NAS 1304 - 30
2 x NAS 1304 - 32


16 x AN 4 - 17A
12 x AN 4 - 16A


Nuts and washers for above.

W11-09171545


?? Stall Warning ??

Aileron  stops are shown on DWG 14 and should give 32 up and 14 down. There are only up stops so the won is governed by the other wing.

Harnesses

The Crow harnesses have arived and very smart they look too. The requirement for a 8 washers to go from the AN 4 Bolt diameter to the inside of the attach point is a nuisance - bushings with a 1/4" ID and 7/16" OD

NOTE The color of both the cockpit and the harness is fire engine or postbox red - they look a vile crimson here - not accurate.