Classis IV

[tmccaa]

Anyone know the Kitfox Classic IV tube thickness? 4130 -`0.35 or 0.49 I am in the process of fixing a hard landing. Tom

[Av8r3400]

What tube location? There is .035 and .049 on my plane...

[tmccaa]

Around the landing gear cluster. Is there a drawing available showing the fuselage and tubing sizes?

[tmccaa]

25809

Hard landing stressing the landing gear cluster

[avidflyer]

This is what I did on my Kitfox 4 when I rebuilt it to protect that area from the grove gear. I actually copied what Larry had done on his Kitfox 4 cause it seemed like a real good idea. I would do it again. JImChuk

[tmccaa]

Certainly strengthens that area. As you know the force has to dissipate somewhere. Wonder what subsequent hard landings did to other frame parts? Any experience after this mod?

[5thDayAV8R]

This is what I did on my Kitfox 4 when I rebuilt it to protect that area from the grove gear. I actually copied what Larry had done on his Kitfox 4 cause it seemed like a real good idea. I would do it again. JImChuk

Whats the thickness of that 4130 sheet?

[avidflyer]

Whats the thickness of that 4130 sheet?


I used .040" thick 4130 sheet. JImChuk

[Mark Mills]

This is what I did on my Kitfox 4 when I rebuilt it to protect that area from the grove gear. I actually copied what Larry had done on his Kitfox 4 cause it seemed like a real good idea. I would do it again. JImChuk

Thanks for showing this Jim. I am curious to know if you MIG or TIG welded the gussets in? That is the next step in my model IV build.

[avidflyer]

They were tig welded into place. But mig would be fine as well I believe if done correctly. The rest of the fuselage is mig welded. JImChuk