Cleco's are inserted from inside ... so it looks riveted. I'm not happy with the rivets on the Nose Bowl.
DeFreze Nosebowl, Motorbox and Firewall (left to right)
Motorbox
Rear view of the Motorbox for Hummel UltraCruiser
Front view of the Motorbox for the Hummel UltraCruiser. I'm not happy with the solid rivets. I think Dennis use pull rivets.
Firewall ... engine removed
Dennis Brook's UltraCruiser?
Firewall in finished UltraCruiser -- Dennis Brook's UltraCruiser?
Dennis Brooks' Firewall to the far left
quid.us/hummel/motorbox/
This link will take you to a webpage with details for construction. Copy the link to the addres bar in an another webpage
Nice Ultracruiser ... send me his name
Arrow left to later close-up image of his side rivet pattern.
Clean engine installation in Motor Box
Dennis' clean engine installation
Buikhead "A" ... Tank Cover in flat black to the left
Closeup of crimps or flutes on the doubler for Bulkhead "A" to prevent rubbing on the cowling. (Dennis Brooks)
Motorbox with side skin removed
Motorbox with side skin removed - underview
Steve Cole - Side Skin attachment Drill Pattern
Dennis Brooks - Side Skin attachment Drill Pattern
Unknown - Side Skin attachment Drill Pattern
Motorbox - Drilling #40 holes to #30
Motorbox - Inside view of Side Skin, Doubler and firewall
Motorbox Side Skin - Note several patterns drawn on side
Motorbox Side Skin - Drilling pattern complete
The vertical pair of holes to the left are on each side of the firewall penetrating the Motorbox Side Skin, Fuselage Skin, Doubler and tabs on Bulkhead "A".
