Tailwheel / prop clearance
Posted: Sat Feb 18, 2012 9:16 am
Folks,
I have 18" clearnance at the prop's lowest point to the ground. I'd
like to purchase a larger tailwheel than the one that came with the
project. My concern is that every inch I raise the tail with a larger
tailwheel has to have at least a 2" or more drop in prop-ground
clearance.
In emailing back and forth to Tom at XPMODS.com, Tom (the owner and an
experienced bush pilot) says the following:
-----
"The comments that I get and with the testing we have done the prop
clearance is not an issue. First of all for the off airport operations
it would almost always be a rough soft or sandy to/landing area. The
small tail wheel would sink into the surface and create a significant
amount of power to un-stick it. This high power setting would be the
culprit in the prop picking up foreign objects. With the 14" (500x5) the
larger rolling radius simply allows the plane to be maneuvered with a
low power setting thus picking up a lot fewer nicks.
For the three point takeoff, angle of attack, the 14" out preformed the
10" or the 8" by allowing the tailgear spring to flex and the big tire
to roll on those soft fields too. The small tire would just dig in."
-----
What have other folks done or contemplated on the tailwheel?
Thanks!
Ted Waltman
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I have 18" clearnance at the prop's lowest point to the ground. I'd
like to purchase a larger tailwheel than the one that came with the
project. My concern is that every inch I raise the tail with a larger
tailwheel has to have at least a 2" or more drop in prop-ground
clearance.
In emailing back and forth to Tom at XPMODS.com, Tom (the owner and an
experienced bush pilot) says the following:
-----
"The comments that I get and with the testing we have done the prop
clearance is not an issue. First of all for the off airport operations
it would almost always be a rough soft or sandy to/landing area. The
small tail wheel would sink into the surface and create a significant
amount of power to un-stick it. This high power setting would be the
culprit in the prop picking up foreign objects. With the 14" (500x5) the
larger rolling radius simply allows the plane to be maneuvered with a
low power setting thus picking up a lot fewer nicks.
For the three point takeoff, angle of attack, the 14" out preformed the
10" or the 8" by allowing the tailgear spring to flex and the big tire
to roll on those soft fields too. The small tire would just dig in."
-----
What have other folks done or contemplated on the tailwheel?
Thanks!
Ted Waltman
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