Q2 Plans Chapter 11 Page 11-05
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- Category: Q-2/Q-200 Plans
- Published: Saturday, 20 May 2006 09:05
- Written by Quickie Aircraft Corporation
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INSTALLING THE WHEELS/TIRES/BRAKES
..... The Q2 uses 5" diameter wheels, internal expanding drum brakes, and 400 x 5 tires standard. The wheel pant is large enough to accomodate a 500 x 5 aircraft tire. .....Begin by assembling the wheel halves and the brake drum using the bolts and nuts provided. Next, mount the tires to the wheels and inflate to about 20 psi. Check the pressure after the assembly has set for several days and verify that there are no leaks. .....The left and right wheel pant assemblies are mirror images of one another. The instructions and sketches that follow cover only the left wheel pant, but you will probably wish to save time and do both the left and right together. .....To provide clearance for the drum brake assembly, which is located on the inboard side of the wheel pant, the tire is offset slightly toward the out board edge of the wheel pant. . .....The LG3 and LG7 spacers are made from 7/8" 0.0. x 0.120" wall 606IT6 Aluminum tubing. The sizing will be described shortly. Find QBSM1 axle bolt (2) and the QBSM2 spacer (2). The LG8 spacer is made from 5/8" 0.0. x 0.065" wall 606IT6 Aluminum tubing, so find that material. .....Open up the 1/4" diameter axle pilot holes in the wheel pant to 5/8" diameter, using a 5/8" spotface to avoid tearing the hole. .....The LG8 spacer length is the width between the outside faces of the whee1pant measured at the axle hole; measure carefully. Assemble the QBSM2 spacer between the brake drum and the brake shoe. Note that both the spacer and brake shoe fit down into the drum with the brake arm pointing forward. Now, the LG7 and LG3 spacers can be made. Measure the width of the wheel pant between the inside faces at the axle h_e. Size the spacers so that there is about 0.02011 freeplay from side to side after they are installed as shown. There should be a minimum of 1/4" clearance between the tire and the inside wheel pant face. .....LG6 is a tool made from 5/811 0.0. x 0.065" wall 6061T6 Aluminum tubing. It has slightly rounded ends, and its 1 ength shoul d be approximately 1/8" 1 ess than the width between the inside faces of the wheel pant measured at the axle hole. By inserting LG6 through the pieces (except LG8) to keep them in the proper position (sort of like a shisk a bob), you can slide the assembly up into the proper position inside the wheel pant. Next, slide and push LG8 from left to right slowly, pushing LG6 out the other side of the wheel pant. When LG8 is resting between the inboard faces of the wheel pant, center the AN970-3 washers on the holes and insert the QBSM1 axle bolt. The axle bolt must be tightened until it clamps up the LG7 and LG3 spacers against the bearings of the wheel. If LG8 is too long, it will prevent this clamping up effect; if the LG7 and/or LG3 spacers are too short, they won't clamp up either. Therefore, you will have to do | ||||
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