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Spitfire arf 95" phoenix assembly

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Old 07-25-2018, 04:12 AM
  #201  
samparfitt
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Todd,
You're right about the cowl mating the the LE of the wing.
My cowl must have been created a little too small as it is a tight fit just to get the cowl over the front of the fuse.
I'm leaving it 'as is'. The changes would only require removing the extra standoffs and shortening the linkages on the throttle/choke.

This morning, I put two new bolts for the ones that came lose. Some blue loctite should hold all the engine bolts on, now.
Think I'll leave the cowl off, again, for the next flight to make sure all's good.
Need to make some wing and tail feather covers.



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Old 07-25-2018, 09:44 AM
  #202  
All Day Dan
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Sam, grab the plane by the crankshaft and someone else by the bottom of the rudder. Lift it off the ground to check the balance around the roll axis. It may explain the reason for the aileron trim.
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Old 07-25-2018, 03:05 PM
  #203  
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Dan,
We did that at the field. It was leaning some but it was helping the needed left aileron.
===========

Wing/tail feather protectors.

Materials needed, plus aluminum tape.
Insulation at HD, 3M spray adhesive and felt cloth.



Best to have the insulation 'weave/grain' along the length to aid in folding in half.




Spray the the 3M to the insulation (not needed on felt) and apply the felt.
No need to worry about wrinkles as it's interior and the wing won't care!
Best to have about 4" too big of felt around each edge in case initial contact is off a 'bit'.



Tail feather covers.



Wings done.
Pockets for guns and wing tubes.



Tail feathers.
Some velcro across the felt helps keep the covers from sliding off.


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Old 07-27-2018, 11:04 AM
  #204  
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Cowl install.
Since I have the cowl out farther than suggested, I installed two pieces of T shaped ply along the sides of the fire wall so the front of the cowl can be secured and reduced vibration.





Inside view of front cowl mounts.
Along with epoxy, these were also mechanically secured.



Also, epoxied some 1/8" thick aircraft ply along the top inside of the fuse to secure the cowl.



Fuse upside down to let gravity hold the four pieces of ply while the epoxy cures.




Finished product.



Used large button head screws.
Total of 10 screws holding the cowl to the fuse should 'do it'.



Presently, some hex head servo screws holding front of cowl to fuse.


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Old 07-27-2018, 12:58 PM
  #205  
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Final additions.

Installed backplate, seat and pilot in cockpit.
Antenna screws into fuse.





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Old 07-30-2018, 06:03 AM
  #206  
Hot Rod Todd
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I didn't mount my antenna because it was not the correct type for the Mk14 I was representing with my scheme. I did spend some time upgrading the cockpit though.

I have quite a few flights on the Spitfire. Still trying to get air to the DLE-61 carb. On hot days the carb tends to heat soak causing the plane to start running poorly after a couple minutes into the flight. A shield to block the muffler heat helps, but a plate above the carb to mount weight didn't help with airflow so I removed it and re-mounted the weights. I added some holes in the cowl to try to get more air into the engine cavity. I also opened up the back scoop even more than I had it. My next step is to make some tubes that do a better job of routing the cool air straight to the carb.

I know, the holes in the cowl aren't scale. If the engine doesn't run well all the scale details in the world don't account for much.


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Old 07-30-2018, 12:48 PM
  #207  
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Todd,
Nice work on the cockpit.
Good idea on making holes in the front of the cowl.
If I remember, Sean put a 'smiley' face type hole under the spinner.
On the ground, no one sees the holes in the cowl and in the air, no one can see that far.
=============

Weird,
After 5 flights, the choke linkage in now interfering with the throttle linkage.
I put a generic longer nylon control horn for the existing metal horn and all's 'good'.
The nylon horn has a brass insert plus I put loctite on the set screw: brass is the only metal I know of where the screws won't 'unscrew'.
When the choke is open, the throttle linkage would hit the choke linkage on the low side so I couldn't get the engine to idle at the proper RPM's.
Twice, now, I've had the bolts come loose on the fire wall side of the engine mounts.
First time, blue loctite was used, this time red loctite was used.






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Old 08-03-2018, 07:04 AM
  #208  
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Updates:
The LE of the aileron covering (overlap section) came loose and had to re-heat it.
Noticed wear of the paint where the wing meets the fuse. Appears that the paint is only on the surface of the covering material so any hanger rash is going to be easily visible. Seems like it would be best to clear coat the plane with some minwax polycrylic.

Had to add more aileron travel as the rolls were very slow. Having to put in about a 1/4" trim on them probably induced this problem.

Plane was nosing over in the grass. Think I had too much toe in.
Also, on one taxi, the plane kept veering to the right. The set screw in the bottom of the oleo fell out, which secures the axle.
The turning wheel also moved the axle bolt in, thus, locking up on the wheel.

The bolts securing the gear to the wing also were loose.

After several flights I think I have most of the 'bugs ironed out'.




Last edited by samparfitt; 08-03-2018 at 07:06 AM.
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Old 08-03-2018, 10:14 AM
  #209  
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Stuff:
Went to ACE hardware to get the metric set screw for holding the wheel axle and they didn't have any that size.
Since I was going by Fastenal, might as well stop there.
Was surprised they had such small sizes (my new 'stop' for small fasteners).
I got the set screws about twice as long as needed and they stick out the bottom of the oleo by about an 1/8" but the blue loctite puddled around the threads instead on inside the hex head hole.

Noticed half of one of the gear doors was missing.
I fly at a lot of fields with grass so I'm just leaving them off.


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Old 08-08-2018, 06:47 AM
  #210  
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Last bug, hopefully!
Put 1/8" thick ply along back of gear mounts to move wheels forward about a 1/2" to prevent nosing over in thick grass.



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