SECTION 46: ENGINE MOUNT & LANDING GEAR: Difference between revisions
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* Use a 3/16 drill and run through the 6 engine mount holes. Ensure the 3/16 dowels go in. | * Use a 3/16 drill and run through the 6 engine mount holes. Ensure the 3/16 dowels go in. | ||
* Mount the engine mount. Some of the dowels will be pushed back, try gently to push them into the firewall holes using light taps. | * Mount the engine mount. Some of the dowels will be pushed back, try gently to push them into the firewall holes using light taps. | ||
* Remove one dowel at a time, drill up the hole | * Remove one dowel at a time, drill up the hole using Nylon spacers, and secure with a bolt. | ||
====Page 46-06==== | ====Page 46-06==== | ||
*Don't forget to grease the bushings on their outside. | *Don't forget to grease the bushings on their outside. | ||
*Tighten to castle nuts to spec, the bushing itself must not rotate. Check that the parts riding on the outside of the bushings still rotate after torquing the castle nuts. If not, see figure 1, it says to remove some of the powder coating if necessary. | *Tighten to castle nuts to spec, the bushing itself must not rotate. Check that the parts riding on the outside of the bushings still rotate after torquing the castle nuts. If not, see figure 1, it says to remove some of the powder coating if necessary. | ||
Revision as of 21:49, 24 April 2023
Build Instruction Updates
- 10/06/20 46_10.pdf
Check for more recent updates here
Page 46-02
- Good results for the initial alignment can be achieved by centering the engine mount first using rubber embedded dowels. See also this FB thread
- Parts
- Steel dowels: McMaster 8893K178 Tight-Tolerance Oil-Hardening O1 Tool Steel Rod, 0.1875" Diameter, 3 Feet Long. Cut six 1 1/3 inch pieces off and chamfer.
- Rubber fuel line: Aircraft Spruce Part# 05-03597, OD 0.5 inch, ID 0.25 in, cut 6 pieces, 7/8 inch
- Silicone Tubing: Amazon, OD 0.25 in, ID 5/32 in, cut 6 pieces, 7/8 inch
- .5 OD / .257 ID Nylon spacers to guide drilling (fits 1/4 inch drill bit, enlarge as you step up the hole to 3/8): Home Depot
- Insert the silicone hose into the rubber hose.
- Insert the dowel into the silicone hose (tap it in using a hammer).
- Grease the outer side of the rubber hose before inserting the dowels into the six engine mount attach tubes from the front.
- Use a 3/16 drill and run through the 6 engine mount holes. Ensure the 3/16 dowels go in.
- Mount the engine mount. Some of the dowels will be pushed back, try gently to push them into the firewall holes using light taps.
- Remove one dowel at a time, drill up the hole using Nylon spacers, and secure with a bolt.
Page 46-06
- Don't forget to grease the bushings on their outside.
- Tighten to castle nuts to spec, the bushing itself must not rotate. Check that the parts riding on the outside of the bushings still rotate after torquing the castle nuts. If not, see figure 1, it says to remove some of the powder coating if necessary.