Tip up canopy, sikaflex, specific question fwd 1/3rd area

[Daida]

Hi Folks !!

I post this here because it will be the same answer for the -6, -7 and -9…….probably -14 as well.

I am helping to put a tip up canopy on a -9 which was formerly riveted on, but after a mishap (aircraft is in a rebuild process) the owner wants to glue it on this time using Sikaflex.

On my -8 it was straight forward and no structure was overlapping the canopy.
On the tip up canopies, at least at the -9 i am working on, there is a small overlapping „flap“ where the canopy sits in.
When using Sikaflex, i wouldn‘t want any fix structure to be in contact with the canopy, i‘d rather have a bed of Sikaflex which allows the canopy to ……. flex/float….move/stretch a bit.

Please see attached picture to know what i mean.

How did you Sika your canopy on? Did you cut of those „flaps“ or placed the canopy in it??

Thanks for your help!

Mit Fliegergruss…

 

[N890GF]

Hi Folks !!

I post this here because it will be the same answer for the -6, -7 and -9…….probably -14 as well.

I am helping to put a tip up canopy on a -9 which was formerly riveted on, but after a mishap (aircraft is in a rebuild process) the owner wants to glue it on this time using Sikaflex.

On my -8 it was straight forward and no structure was overlapping the canopy.
On the tip up canopies, at least at the -9 i am working on, there is a small overlapping „flap“ where the canopy sits in.
When using Sikaflex, i wouldn‘t want any fix structure to be in contact with the canopy, i‘d rather have a bed of Sikaflex which allows the canopy to ……. flex/float….move/stretch a bit.

Please see attached picture to know what i mean.

How did you Sika your canopy on? Did you cut of those „flaps“ or placed the canopy in it??

Thanks for your help!

Mit Fliegergruss…

I removed that part. I have a few write ups on the whole process. It worked for me, but do some additional research, don’t just listen to me

Bonded Canopy

This weekend was a big weekend. Test fitting the canopy for final adjustments My friend Norio came to help with the install. We started by dry fitting the canopy and marking it for exact alignment.…

n890gf.com

 

[skelrad]

I wided the slot of that flap quite a bit, as most people do, in order to allow the canopy to rest in it better. I did put a very thin layer of Sika between it and the canopy and didn't fret over the small bump much since it'll be covered and smoothed over by a fairing anyway. If I were to do it over, I'd just chop off the flap, like George did. I know that's a fairly common approach when Sika is in the mix. There's really no reason it needs to be there as far as I can tell.