RE: ultimate 40
I think the 3.2 is a bit conservative, and it could easily go back another 1/2" if not more.
I used the jigs from a WM plane and on two NP Ultimates and there were no variances... I didn't touch, sand or modify the cutouts though, the struts fit nicely into the cutouts.
I've found that the key to getting the NP Ultimate right is to
- Drill out the holes for the carbanes from the INSIDE of the fuselage.
The positions for mine came properly marked with pen, as well as a slight laser burn.
- Attach the lower wing first and make sure that it is square and in full contact with the fuselage.
- Attach the upper wing using ONLY the struts. Check that the upper and lower wing are square.
- Finally attach the center carbanes slightly depressing the middle of the wing to get the carbane holes to align.
I've gotten perfect alignments on two planes this way w/o needing any jigs.
Most planes will break at the landing gear blocks as this area really needs far more re-inforcement.
I've managed to punch out the blocks on hard landings with the following planes:
WM Ultimate 40S
NP Ultimate 40S
Funtana 90s
Seagull Spacewalker II
H9 PTS P-51
Model Tech Extra 300
So this is not endemic to the Nitroplanes Ultimate.
I wish that the manufacturers would do the following.
- Provide more re-informcent for the gear blocks, front and rear.
- Use more blind nuts, at least 2 more than they use now
- Use larger threads/bolts
- Use Nylon threads/bolts instead of metal ones.
That way the nylon bolts would break off on an overly hard landing helping to save both the plane and the gear.
Re-inforcing the above planes has eliminated the problem though... now the gear will collapse outward instead, which tends to save the plane.