Recent Attachments for JClark
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What's left of the house.
This used to be a 80" extra 300.
Colors are Pearl Green that was used on the 55" Edge's. Yellow off the 103's and Black and silver.
Battery and receiver installation.
Rare earth magnets and fuel tank install. The extra magnet locations should help save the canopy pins.
Added extra magnets to the canopy to help hold it on with the extra vibration of the saito.
All Buttoned up.
HS65MG for the throttle. Great light weight strong servo for this set-up.
Rudder servo in the tail opposite of the elevator servo. You will need to make a push rod for this and only use half of the rudder horn.
I used monokote to seal the front former since this plane has a cowl ring. Usually use 1/16" Balsa for this.
Added two 1/8" basswood support beams to the top of the box. Seal all this with polyurethane sealer usually two coats.
I used 1/16" basswood to close the box on three sides to add strength and rigidity.
Add tri-stock to all four corners of the firewall. Notice that the holes are drilled and reliefs for the nuts and washers in the tri-stock.
After checking the fit and measurements. I tac the firewall with thin CA. Add hard balsa or light ply to the holes in the box to add strength.
Side view of the fit up.
Trial fit the firewall to the box. You may have to remove a little glue in the corners of the box
Remove the box sides and the excess glue. Mark your mount lines and bolt holes on the firewall. Remember to mark the Top.
I use my trust razor saw for this cut. Cuts clean and strait.
Marks for the cut all the way around.
Marks on where the box will be cut. Notice it is to the edge of the firewall and not the box sides.
Place cowl on and measure the distance from the firewall to the cowl edge. Remember to leave a few mm for spinner clearance.
Battery and receiver lay-out.
New magnets and fuel tank set-up.
I also added extra rare earth magnets to help keep the canopy on. Should help save the canopy pins.
All Buttoned up. You can see the hole in the bottom for hot air has a low pressure dam made with the piece I cut out.
HS65MG servo for the throttle. Works great and light weight.
Make sure to seal the box with poly stain or thinned epoxy. I sealed the F1 former with Monokote as the cowl has the ring.
Rudder servo in the tail opposite of the elevator servo. You will need to make a push-rod for this and only use half the rudder horn.
I added two support braces across the top of the box to help stop motor box flex. Basswood also.
Seal the outside of the box. I used 1/16th basswood for this. Sides and bottom.
Add Tri-stock to all four corners.
Fill in voids with some hard balsa or light ply. This adds strength and gives something for the tri-stock to glue to.
Side view of install. Note that the firewall is event with the cut you made. That is why you do your measurements from the face of the firewall.
Firewall marked and placed for final check before any glue is applied. Install the cowl and measure again to verify everything is going to clear.
Pull the box sides off and clean all excess glue off the firewall. Make sure to mark the top also. I then draw new center lines off the hole cut in the firewall as it is the centered offset for the right thrust. This hole should be 13mm so 6.5mm is the ce
Look Ma I made a stub nose!!
I use my trusty razor saw to cut the box free. Makes a good clean cut and easy to work with.
Draw a line all the way around the box. Remember that you draw from the firewall(VERY IMPORTANT!!).
Then you remove the cowl and measure from the front former to the front of the firewall. You add the two measurements( I usually do this on the long side of the box). Should come out to around 204mm. You need to put your planned engine on your mounts so y
First you start with measuring the length from the original firewall to where you want the spinner back to be.
Really low knife edge pass. :)
Low knife edge pass.
And what it looks like after dark.
89" Slick before graphics.
87" SHP Airbrushed
The plane that we will be flying.
Some picks of the damage on the front right side.
Getting stuff cut away to put the new parts in.
The elevator broke the hinges when it hit. I think with the way I did the Robart style hinges that I don't have to worry about that again.
As you can see, lots of damage to the bottom. and goes back a ways.
Top view of cut box.
After cutting. Notice that I have the notches marked to be cut out to remount the firewall flush with the cut.
The mesurment needed to shorten the motor box for a Saito 72/82 with a black nylon mount. You use the same one on both sides to keep the right thrust in the firewall.
87" SHP Airbrushed over Ultracote.
Of coarse this is a little bigger than the 89" slick so it cools you a little quicker. ;)
The red version.
The wife wasn't amused!!
My new girl.
Marks for the notches that need to be cut to except the firewall.
Mesurment for the cut to shorten the box.
Mmmm Tru-turn spinner :)
Mine, mine mine mine mine!!! LOL
Bead blasted finish.
Dual ring pistons.
Saito 100 powered 57"Suk and Saito 72 powered 51"Slick.
Here is the scheme.
Almost as much as he has in it I think if you count it all up. :)
The layout that is going on the plane.
Grahics will be here next week.
Just needs some graphics.
Rec, batt and reg.
Fuel lines run.
Well here is what it will look like by next weekend.
3W 85xics. Will have a little power.
Throttle servo installed and linkage set up.
Still have to cut hole for glow igniter.
8oz fuel tank installed.
Fill in box holes with 16th inch balsa. Then put another sheet over whole box sides and bottom.
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