scruffmeister
50cc
Out of interest, how many metres (or feet) of covering film would you expect an aircraft of this size to need?
IMAC JTEC 2.7m Extra 300CS
- Thread starter Alky6
- Start date
Alky6
150cc
48 feet single color is what I calculate to be the very minimum to cover an airframe this size.
jtec/radiowave
70cc twin V2
I usually figure about ten 6 ft rolls and that usually is a combination of 3 colors. Single color Alky6 is probably close
Alky6
150cc
Drilled holes to mount the landing gear. Glued the leading edge (1/2"x1" balsa) to the wings and fitted the root ribs, then started sanding the wings. The leading edge was glued on with weldbond glue. Talked with Al and he recommended the razor plane from Master Airscrew. An $8 or so investment. Man does that thing work! Has adjustment screws on each side of the blade. Can't believe how fast it takes down material! Used 9430 Hysol to glue on the root ribs.
On the root ribs, because I chose to glue the ribs on after the wings were sheeted, I needed to add a bit of material near the leading edge so that it finished out at the top of the sheeting. This provides a harder material versus the balsa skin to take abuse on the edges of the wings.
Root rib Assembly:
I drew a line down the centerline of the root rib and used that to get the initial alignment for the wing bolt locations transferred to the root rib. The root rib was then glued on centered on the wing. Final adjustment for incidence will be done before I cut out the ailerons. Also cut out and glued up the 1/4-20 tee nuts and backing plates for the wing bolts that were glued to the rib with titebond II. Those were then routed out. I used a piece of 1-1/2" poplar dowl cut down and wrapped with tape to get to proper size to use as a mock up tool in the wing tube socket. The tee nuts were glued in with some cheap 15 minute epoxy. I did grease a 1/4-20 bolt and screwed into tee nut when I glued up the root rib to keep epoxy from getting in the threads.
Have one wing still to rough sand. Also a couple of boo-boos to fix.....
On the root ribs, because I chose to glue the ribs on after the wings were sheeted, I needed to add a bit of material near the leading edge so that it finished out at the top of the sheeting. This provides a harder material versus the balsa skin to take abuse on the edges of the wings.
Root rib Assembly:
I drew a line down the centerline of the root rib and used that to get the initial alignment for the wing bolt locations transferred to the root rib. The root rib was then glued on centered on the wing. Final adjustment for incidence will be done before I cut out the ailerons. Also cut out and glued up the 1/4-20 tee nuts and backing plates for the wing bolts that were glued to the rib with titebond II. Those were then routed out. I used a piece of 1-1/2" poplar dowl cut down and wrapped with tape to get to proper size to use as a mock up tool in the wing tube socket. The tee nuts were glued in with some cheap 15 minute epoxy. I did grease a 1/4-20 bolt and screwed into tee nut when I glued up the root rib to keep epoxy from getting in the threads.
Have one wing still to rough sand. Also a couple of boo-boos to fix.....
jtec/radiowave
70cc twin V2
I see you purchased the razor plane. How'd that work out for you!!!
Al
Al
Alky6
150cc
Works awesome!! Had several others, including a really old x-acto one, that don't work very well and are really frustrating. This one with the adjustment screws on each side of the blade make sneaking up on the correct cut depth really easy and it actually stays in adjustment. Probably will buy a couple more to have different depths of cuts ready to go. Thanks again for turning me on to it.
Alky6
150cc
Made up some tank hold downs to glue into the tank bottom. A bit overkill using a mill, but can't beat using the DRO with some ordinate dimensions! Besides, trying to use a dremel with a rotobit was horrible. Interesting to note when using the very tip of the rotobit and fast feed speeds results in the corners moving off line - not much time spent on the setup either.... Three on left side in second pic were done with a dremel - leading to the need to use the mill.
HRRC Flyer
GSN Sponsor Tier 1
Awesome work Paul,
Thanks for the answer a few pages back. Been kinda busy lately and just catching up with your AWESOME thread. Thanks for sharing this with us..
Thanks for the answer a few pages back. Been kinda busy lately and just catching up with your AWESOME thread. Thanks for sharing this with us..