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Well, it’s probably time to get this subject out in the open and see what the readers are planning! Attached is my just finished One Design (2009)plane, i.e. 1/2A Spacer.It finished out at 7.7 ozs (218.5 gr.) ready to fly less fuel. Again, next years One Design states any Nostalgia Legal engine! As you can see it’s fitted with an .049 medallion. Have not test glided it yet or anything else. This part of Tennessee this time of the year is home to constant winds over 10+ mph. What’s on your table for the One Design?
Scott
Looks like an old Competition tank mount, They were real nice and light but fitting the spacer was a bit of a pain.
Looks like a Comp Models tank to me also. CG? I highly recommend moving the CG forward. About 5/8 inch. If you fly it at the plans CG, you’ll eventually spin it in.
One-design at this years Nats will be exciting!
Wasn’t it Tippy Turtle who espoused “Duck and Cover” ? Who knew he was talking about Spacers?Sounds like using the Cox red tank is a good idea then.
I should really mount and run the Medallion that I plan on using, it hasn’t been run in 25 years. If it runs, I build the plane!Yes, it’s a competition models tank, and I balanced it at 75% from leading edge. This is about 5% forward of the print CG. I had to add 5g to tail to balance at the 75%. Glide is real good on a hand test glide. I did add 1/32″ shim to TE of stab for the glide.
Scott
I have built many 1/2A spacers as a kid, and a few more in the 1980s.
They flew well for awhile with tissue covering, but the warps usually got them.
So I am going to build 2 more with plastic, and maybe I can keep them flying well longer?
Always built them for Atwood Shrieks with the rearward pylon.
At the 1956 NATS in Dallas I shared my trimming techniques with Sal Taibi who took my comments gratiously….. at the age of 13…. and later still remembered embarassingly.
>the Medallion that I plan on using, it hasn’t been run in 25 years. If it runs, I build the plane!
Dennis, remember that only slit-exhaust Medallions are Nos-legal at this time
Thanks Jim, it’s always had the split exhuast.
Dave indicates that the pylon can be installed in a forward or rearward position? That would make the CG setting easy.
Thanks!
Dennis, the vast majority of Medallion .049’s have the same rectangular exhaust ports as seen in the TD. Late production run went to slit, which is the version the NFFS accepted.
I meant, this one has always had the split exhauast. I picked it up in 1979/80 for a power pod on an r/c glider.
Today was nice and warm, the Medallion started and ran today!
15% nitro and a 5 1/4×4 prop.It sounded sweet considering how long its been sitting.
Looking around, I don’t see many props for 1/2a’s in general.
What will I need for the Medallion?
I have a TD also[not for NOS] and since I’m asking, what props are available for it as well.Why don’t you poke around in the APC website: http://www.apcprop.com and I’m sure you’ll find something to your taste.
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