Aerobatic Performance Team
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Absolutely the Best in Giant Scale Team Performance ! |
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ARF Reviews
Extreme Composite Edge 540T 50CC
product Reviews
The Ladies Justina and Dietrich 42% Extra 260
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ARF Build Review TOC Extreme 40% Extra 260
Build Review by Rockin' Rick Part 2
The 3w-150 engine is now installed on the firewall using 1/4-20 socket head hardened bolts. Be sure to put some blue locktite on the threads. I've installed the headers just to see where my throttle servo should be mounted and marked out the location for cutting the bottom of the motor box. This should be a good place. I'll cut out the slots and mount the ignition inside the engine box on heavy foam and strap it with a Velcro strap.
The left side of the engine box needed to be cut out for cylinder head to clear the engine box. Not much cutting was necessary. The ignition module is now mounted inside the engine box. I've used the Dremel tool with the cut off wheel to cut out the ignition switch and the charge jack for the smoke pump battery. I like the MPI switches for the ignition as they have small LED's that let you know your battery condition.
It's become apparent that due to the nature of the linkage for the Tillotson Carb on the 3W engine, I'll have to place the throttle servo in the engine box to get a more upward pull on the connecting push rod. Full Throttle could not have been achieved mounting the servo outside the engine box as originally planned. So much for that piece of engineering. The fuel and smoke oil inlets are placed as far forward as possible on the right side of the fuse. The fuse design and wing placement does not leave a whole lot of choices for this installation. The switches for the receiver are also installed above the rear of the wing. I had to fill in a cut out and double back it with lite ply to get both installed next to each other. Let's get to work on the canister setup.
I've got a template leftover from a another build to help me layout the cut out for the support bracket for the MTW 110 canisters that I'll use for this model. The bracket was built from a piece of 1/4" lite ply 8" wide and 4 1/4" tall. This will allow air flow over the top of the cans and exit at the rear of the cans through the bottom of the fuse. The mount is set up to fit the diameter of the MTW cans. The opening was 8" wide in the tunnel and I backed up the mount to the aluminum angle for the landing gear reinforcement. 5/16" Basswood stock was epoxied to the sides of the tunnel at this placement since it is close to the middle of the full length of the cans. Most manufacturers suggest that the canister support mounts be at the CG of the cans.
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