Upgrading GW from 950 to 1050

[estepec]

Thought I would ask this board. What is needed to upgrade a model II from a 950 gross to 1050 gross? Thanks for any response.

[MKIIRob]

I’m looking for the same information, from what I can gather so far the rear wing spar cross tube was reinforced in the MK4 vs earlier models.

It would be nice to see some drawings or photos of the differences.

Not sure what else was also done.

Cher’s Rob

[Ronin]

If somebody could measure a 4 carry thru tube thickness, I'll get the dimensions on my bare 3 fuselage.

[TJay]

If somebody could measure a 4 carry thru tube thickness, I'll get the dimensions on my bare 3 fuselage.

the model 1,2,3,and early 4 are all the same in the rear, the fronts however are a little different.

[estepec]

TJay, what is different in the front spar? Thanks

[TJay]

Its been a long time but if I remember right the front one on the model 1 and 2 are 7/8" .035 and the 3 and 4 are 1" .050 or .058

I would be interested to find out what the model 7 is just for comparison

[t j]

Thought I would ask this board. What is needed to upgrade a model II from a 950 gross to 1050 gross? Thanks for any response.

If you really want all the changes to make it 1050 max gross weight...remove the fuel caps and put them on a model III.

[MKIIRob]

If you really want all the changes to make it 1050 max gross weight...remove the fuel caps and put them on a model III.

That's a bit drastic Tom.

Just wanting to consider improvements to the aircraft with the most logical safety upgrades while other work is being done with the aircraft already half apart before it goes back togeather. If they prove to drastic or beyond reason, the MKII is a very fine aircraft as it is at MTOW 950lbs.