LANDING GEAR CHANGES FOR MY
In order to increase my confidence level while landing at my grass strip and
others like it I have installed slightly larger main gear tires on the
original 5" wheels.
I have also installed a new nose gear fork which
accommodates a 500 x5 wheel and tire.
I replaced the, not so,
original nose gear fork and tire with a modified RV10 fork and 500 x 5 tire.
I had previously replaced the original fork with the new style fork that the
Van's service bulletin now mandates.
The RV10 fork has a gear leg bushing ID of 1 1/2" which is 1/4"
larger that the RV7A fork.
That required the fabrication of an adaptor.
Here I'm boring a piece of 4130 steel tubing to fit the 1 1/4" gear leg.
The outside diameter of the 1 1/2" tube happened to be a perfect slide fit
to the the 1 1/2" ID fork bushing.
This tube would combine with a plate to function as the nose gear stop.
The washer is installed at the bottom against the larger fork bushing and
above the clutch disks.
I made this one but it's the same size as the
washer, supplied by Van's, that's installed below the clutch disks.
finished, leg to fork bushing, adaptor/stop.
drawing is the modified RV10 fork and adaptor/stop.
Notice that the brass
bushings are inset to reduce the
removal of the fork material (see photo
The top drawing is a wheel axle spacer.
aluminum plug with a 1/4" hole was used to steady the fly cutter which had a
drill rod guide.
Here's how it finished up --- no sharp corners or edges here.
I bought new brass fork bushings and they were trimmed in length to fit the
As it turned out, I really didn't need the new brass bushings
as the original ones pressed out easily and without damage.
installed 1/4" staking screws for the bushings
(see drawing above)
as they didn't seem tight enough to me.
The grease zerk had to be moved
and one of the screws
utilized the vacated hole, which had the same
The RV10 axel setup did not work with my wheel (Cleveland) so I turned a
couple of spacer/bushings.
This cap screw will prevent the spacer/bushings from rotating
The difference in size
Again --- quite a difference
With this new wheel/tire, I will have to replace the gear leg fairing and
fabricate a new wheel fairing.
It doesn't look too bad.
This change gives me 2 1/2"
additional, gear leg bottom to
ground, clearance over the original setup and
1 1/2" more than the new Van's fork provides.
Prop to ground clearance is 1
The new nose gear setup weighs and additional 3.1 lbs. over
that with the latest Van's fork.
That brings the total weight gain to 5.9
lbs. for the conversion of all three wheels.
That does not consider a
probable slight gain for the new wheel fairings.
As expected, the tail now sets a bit lower than before.