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| Spring Aluminum Landing Gear is normally mounted on the fuselage structure with a shackle-type clamping system as shown in the diagram below. With heavy loading or hard landings, the gear strut legs deflect upward and the center section of the gear deflects downward. If the gear is attached rigidly to the fuselage and not allowed to deflect (as shown to the right), the deflecting gear will transmit torsional loads to the fuselage which can cause stress failures in the lower longerons near the gear attach points. |
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To prevent this from happening, radius plates or radius blocks should be installed as illustrated to the left. These plates, or blocks, allow the gear to deflect without placing a torsional load on the fuselage. The proper radius for these plates is critical for different landing gear configurations. |
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| Radius Plates Radius plates are designed to eliminate torsional loads on the fuselage as the landing geardeflects. Material: 2024-T3 aluminum Dimensions: 1-1/2"x7"x1/4" P/N 6300 Price: $19.00 Each |
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Installation: Trim the length to fit within the existing mounting brackets. Drill holes to match existing attach bolts, and install as illustrated above. It is important to reinstall existing lower steel plate (or bracket) under the lower radius plate for proper support. Longer attach bolts will normally be required. Typical installation requires four plates. |
Radius Blocks Material: 2024 T3 aluminum |
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Installation: Place a radius block on top and bottom of gear leg and bolt to fuselage through the predrilled 3/8" holes. Repeat for other side of fuselage. No other clamping required. Typical installation requires four radius blocks. |
| GEAR THICKNESS | FOR 4" WIDE GEAR | FOR 5" WIDE GEAR | ||||||||
| L | W | H | P/N | PRICE | L | W | H | P/N | PRICE | |
| 3/4" | 5 3/4" | 1 1/2" | 3/4" | 6346 | $29.00 | 6 3/4" | 1 1/2" | 3/4" | 6356 | $38.00 |
| 7'8" | 5 3/4" | 1 1/2" | 7'8" | 6347 | $29.00 | 6 3/4" | 1 1/2" | 7'8" | 6357 | $38.00 |
| 1" | 5 3/4" | 1 1/2" | 1" | 6348 | $29.00 | 6 3/4" | 1 1/2" | 1" | 6358 | $38.00 |