Hi! Rob.
IMHO The main item to protect is the propeller and its attendant parent
attaching point !
In my case thank the Lord for the safety strap/cable. IMHO I would like to
know the load at which the nose leg tube provides "flexing" ? and then next
I would like to know its yield load? Having bent mine DOWN with a
"wheelbarrow" bounced landing! All these questions because I don't believe
the theory that the leg is ACTUALLY providing sufficient "FLEXING" on its
own even with moderately heavy landings.
When a) and b) bounced it , it was with such force that the TAIL of the nose
wheel spat got a bash and also gravel rash from the runway ! { a) and b)
shall remain nameless! But that's where I believe the rot started with my
bungee}
Regards
Bob Harrison G-PTAG
-----Original Message-----
From: owner-europa@post.aviators.net
Sent: 30 July 2001 16:09
Subject: RE: Trike Nose Leg Bungee Breaking.
---From the tri-gear manual, 30 May 1998 edition, page 29-12:
Remember that the bungee does not provide the nose gear springing, the
flexibility of the leg does
this. The bungee is to allow a momentary overload to take place without
over-stressing the anchor
point.
If this is the purpose of the bungee, any stress that is sufficient to break
the bungee AND the factory specified safety cable is quite likely to over
stress the anchor point. Ergo, it is probably not a good idea to add
strength to either, and in particular to strengthen the safety cable. The
energy dissipated by breaking the bungee might protect the anchor points
---From damage but I suppose that breaking the cable will definitely cause some
damage and breaking a thicker cable would cause even more damage. Any
landing bad enough to break either is likely to be expensive so I guess I'm
just quibbling about what pieces will need to be repaired.
Best regards,
Rob Housman
A070
-----Original Message-----
From: owner-europa@post.aviators.net
Subject: Re: Trike Nose Leg Bungee Breaking.
********
On topic, I doubled the diameter of the safety cable, using plastic
coated comm'l cable. Yeah, I know, not aviation grade, but 4X the
area, as there has been breakage on hard landing I hear. The plastic
I figure will help prevent chafing of the frame, causing rust in
places you cannot inspect so easy. I also swaged on 2 ferrules for
extra safety.
Regards,
Fred F., A063
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