dhal22

i know. i'm in no hurry. i like Tarquin's advice about drilling the engine mount holes while the area is still open but the wing and stabs will keep me busy for awhile. plus i've got some painting to do once i get some primer.

doxilia

My Feedback: (3)

What about Webra's 145XP?

3KW on a 16" prop...

Then again, a used 140RX is probably about the same cost.

David.

flywilly

My Feedback: (121)

Webra is a great engine, too. And I much prefer the high speed needle on the carb. I ran a Bully 1.20 RE which was basically a Webra for 1100 flights and only replaced the glo-plug periodically (actually had a 2-plug head). How much is a new Webra 145 these days?
-Will

dhal22

I guess I should find out. thx again.

dhal22

i decided to switch to other areas of the Wild Beat and put off purchasing an engine as long as possible. Tarquin, who is building a somewhat similar plane, the MK Beetle, recommended fitting the engine and drilling the mounting holes before too much work was completed on the fuse. here i'm doing the best i can to interpret the stab construction. i'm glad there are pictures to accompany the japanese writing. The WB has an adjustable stab (like the Beetle) and requires a little more work than a regular built up version.

dhal22

kind of a bad camera angle but i've got the stab framed. also i've started gluing the fuse but photos on that will have to wait.

Taurus Flyer

Here you are!

dhal22

Cool. thx Cees.

Taurus Flyer

David,
I am not such a bad gay some people think, I am only not happy the way you use your measuring tools!
When I see your picture and the red circle I have to think about CHARLES WINTER!
Success.

Nice plane
Cees

dhal22

ha, i'm caught using various items out of my tool box! some big sockets and that heavy brass coupling is what you are seeing.

Taurus Flyer

David,

I was thinking maybe CHARLES could use that heavy brass coupling to make a better ram-air intake for his twin. Have you two of them?
Cees

dhal22

that looks like a copper fitting. a lot lighter than brass. [sm=teeth_smile.gif] i was just using mine for weights.

dhal22

has anyone ever sheeted their built up wings by pregluing the skins and then ironing them on after the glue dries? it seems to work, in the last photo the joint stayed intact and the balsa failed around it. the wood was barely cool. i suspect it would be stronger after it cooled a bit more.

dhal22

sorry, the photos are loading too slow tonite

doxilia

My Feedback: (3)

David,

What adhesive are you using? CA?

It sounds complicated to control the glue flow as there is no joint to bond until the parts are placed together. It seems to me that you'd also have to add considerable adhesive to make sure you have a bond everywhere you want one.

Any reason you don't just flow the adhesive at the joints with the sheeting pre-tacked and/or pinned? CA is great that way.

David.

dhal22

whoops, i intended to mention the glue also. it is titebond 2 or any yellow wood glue. i rarely use CA. anyway the technique is for gluing the 2nd skin where you can't see the bond. preglue the ribs and skin, some have recommended a little food coloring to help see that you have good coverage, let the glue dry and then iron the skin to the ribs. that was a test i did and the joints are very strong. i've just never used the technique.

AllTheGoodNamesAreTaken

My Feedback: (180)

Hi David.

I wasn't aware that alphatic resin was "reflowable". I know regular Elmers (white glue) is, as many people use it as a primer for Monokote.

dhal22

i've seen the technique used many times here on rcu but a search didn't bring up exact step by step instructions. so i did a test and asked for opinions. i don't think the glue reflows. the heat just fuses the it.

ppljr

My Feedback: (94)

I've heard of it before as an old trick to attaching wing skins to a foam core. The glue polymerizes and the bond is pretty strong. Actually tried it on a piece of scrap and worked pretty well.

Pedro

dhal22

i learned of this due to guys using it specifically for bonding the 2nd side wingskin to a built up wing. i just tested/destroyed the remainder of my test piece and the bond held everywhere. the balsa failed at every joint.

dhal22

i've got the stab almost finished. the 2 aluminum tubes are part of the future adjustable stab mechanics. the tubes are gorilla glued on one side and will be removable from the other side via screws in the blocks (from the bottom).

dhal22

i've got the stab sheeted. i opted against trying to iron the wing skins on. the built up elevator is next.

dhal22

the elevator was pretty easy. all the pieces are numbered and fit together perfectly. the stab is now ready for sanding.

dhal22

edited to remove house size photos.

dhal22

deleted.