Has anyone modified one of the Grob pin and socket drop off tail dollies for use with a tow bar? I'm worried that the stresses from towing on uneven ground/grass may cause issues with cracking the socket portion in the fuselage. Of course building or finding a regular wrap around dolly is an option.

On Fri, 7 Jun 2013 07:02:00 -0700 (PDT), Greg Delp
> wrote:

>Has anyone modified one of the Grob pin and socket drop off tail dollies for use with a tow bar? I'm worried that the stresses from towing on uneven ground/grass may cause issues with cracking the socket portion in the fuselage. Of course building or finding a regular wrap around dolly is an option.

True story: My late partner Morgan was staged for a contest launch in
our Astir-CS, and referring to the tailwheel hole in our customary
scatological manner, he said "Tape up my ***hole!" Unfortunately, he
had a hot mike...

On Friday, June 7, 2013 7:02:00 AM UTC-7, Greg Delp wrote:
> Has anyone modified one of the Grob pin and socket drop off tail dollies for use with a tow bar? I'm worried that the stresses from towing on uneven ground/grass may cause issues with cracking the socket portion in the fuselage. Of course building or finding a regular wrap around dolly is an option.

On Friday, June 7, 2013 4:02:00 PM UTC+2, Greg Delp wrote:
> Has anyone modified one of the Grob pin and socket drop off tail dollies for use with a tow bar? I'm worried that the stresses from towing on uneven ground/grass may cause issues with cracking the socket portion in the fuselage. Of course building or finding a regular wrap around dolly is an option.

Did the one you make have a wheel or wheels on the tow bar portion? That sounds like a good alternative.If the tow bar portion was strong enough to prevent any leaning of the post section it would evenly distribute all the stress along the entire wall of the socket in the tail.

Hi Greg! No wheel, the towbar is attached to the fuselage with the pin and the belt, then lifted onto the tow coupling of the car. Of course this does produce some stress on the bar and it has to be solid and well made (guess how I learned).

On Wednesday, June 12, 2013 8:04:13 AM UTC-7, Greg Delp wrote:
> Did the one you make have a wheel or wheels on the tow bar portion? That sounds like a good alternative.If the tow bar portion was strong enough to prevent any leaning of the post section it would evenly distribute all the stress along the entire wall of the socket in the tail.

Greg,
The tow bar I made just attatches to the axle of the origninal 'Wheel-on-a-post'.