REFLECTOR: Nose Gear Overcenter Stop

[Al Gietzen]

Jon;

 

The so-called over-center stop is simply some 1/8” x 1” (from memory) AL
flat stock with about ¾” 90 degree bend-back at each end for drilling and
mounting to the inside of the keel with a couple -10 screws on each side.
It should actually not serve as the stop - the cylinder rod linkage should
be adjusted to stop fully extended with the over-center linkage about ¼”
over center (above horizontal).  The stop should then be mounted edge-on
against the linkage, which would prevent it from going any further; and
absorb additional load from bouncing on the nose gear to prevent damage to
the cylinder.  The over center stop then becomes a good place to mount the
down-and-locked micro switch.

 

The main concern regarding heating of the main gear leg is radiant heat from
the brake rotor.  I used a piece of thin SS sheet about the width of the
leg, which mounts between the axle flange and the leg and extends upward to
the top of the rotor.  Just above axle flange make a double bend so the heat
shield is spaced about 1/8-1/4” away from the leg.  Makes an excellent
radiation baffle.

 

Went through my files, but couldn’t find a photo of either item.

 

Al 

 

 

-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Bachman, Jonathan
Sent: Tuesday, September 22, 2009 8:54 AM
To: Velocity Aircraft Owners and Builders list
Subject: REFLECTOR: Nose Gear Overcenter Stop

 

I purchased my 92 Velo already complete.  I have been going through it and
just finished rebuilding all of the RG system, new seals, hoses etc.  It did
not have an over-center stop installed.  The Std RG build book has some info
on the placement of the over-center stop but it is not clear to me;
especially the mounting and position of the nose gear down switch.  Can
anyone with an RG steer me in the right direction?  A picture would be
helpful too. 

 

Also, the new and improved factory supplied main gear pulley mount brackets
with the cable guards would not work in my plane.  The distance from the
pivot hole to the pulley hole on the new brackets is larger than my original
brackets and the pulley hits the header tank with the new brackets
installed.  I’ve put the old ones back in but would like to add cable guards
to them.  Has anyone done so?  And if so what worked?

 

Jon Bachman

N956DR

Std RG

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