Lil satan build, cant decide on a power plant

Wow! That is stunning. Eagerly awaiting flight report.
Where is the balance point/CG?

That is Nice!! What engine did you decide on , can't tell from the pics.

Thanks, the cg is at 7/8". The engine is a norvel 0.061 AME.

Thanks , that should carry the mail really good !!

Maiden flight is done! Wow is this thing fun. Real point and shoot kinda characteristics, awesome flys like a lazer.

I had some issues with the norvel, behaved as if it was not broken in, just would not rev up... so I stripped it down and yup tight top end fit. Should of trusted my instincts, some times they are spot on.

So I dropped a teedee in that I new ran well. Wasn't able to get the tune quite dialed it, got cut short after the first flight as 2 of the engine mount bolts disappeared and the engine was sort of flapping in the breeze. I can tell this is going to be a fun model. Cant wait to find some more time to keep tinkering with it. Hope to shoot a video once I get it running properly. The teedee was close just needed to be richer.

Good for you! Congrats on the maiden run. That is always exciting!

Don't give up on the Norvel yet. And don't do anything drastic either (woops, too late). I have a pair of .074s that just about broke me of Norvels in general. They both almost hated to start when they were new...as in "I can't believe I spent too much to buy brand-new from NVEngines" new. In the red and white box-with papers-and warranty-and new smell. Really new! I fought them both on the bench for probably 10 run cycles at an ounce per run. They were still stiff at TDC.They slobbered their grey piston/cylinder coating for a while. But then they stopped the grey slobber, loosened up at TDC a bit, and really became real sweeties!

Now once broken in, they are some smooth, easy starting engines. You can't buy them from me... ever! I even bought up a bunch of extras in different sizes.

Make or buy a bench engine mount and run it off the plane for a few tanks. Instructions for proper break-in can be found here (pg 3) or at StuntHanger.

The TeeDee may do well to have the venturi sleeved. I don't know if I read it here or on StuntHanger, but one of the Cox regulars shows a small piece of brass thin-wall taking the venturi diameter down a bit. This would be a recent post within the last few months, and will improve fuel draw (richer) to make the engine behave more like a Medallion. Or you could slip a Medallion venturi/front cover (whatever that part or body-bit is called) in place with little effort. Either option makes the engine run without fuel pressure reliably.

Hey Jim what fuel blend did you break in with? i just got i think 4 more of difft. sizes ( but it was the o20 TD that i was after

Love my Norvel Big Mig .06 . Took a while to break in but it is worth the time . Put it on a test stand , heat the top cylinder up with a heat gun before starting . The Norvel likes small props . Nice looking Satin . They are a bit small but fly good .

Mike1484

Eric,
I used a homebrew.mix that works out roughly to 24%N/11%Synth/%9 castor.

Look for "fuel calculator" here or SH. I posted my mix, and the Excel spreadsheet that takes two known fuels and castor to generate percent values on all of it. I know I posted the link to the spreadsheet on SH about a month ago for Motorman...but don't think I gave my fuel values.

I can go out to the garage and check...the bottles are labelled with the quantities and resultant values if you want.

Thanks for the advice, that's really interesting about the teedee. I'll have to read up on it for sure.  The teedee sure does go but man is it tough to dial in.  Runs kinda ruff on the ground then when launched smooths out and screams, tough to figure out the needle setting with the variation between between the air and being held.  

I rolled the dice on the Norvel, I thought man i should really bench run this first (I picked it up used off a nice rc guy). But time constraints prevented it. I was suprised to discover that it wasn't broken in.

I'll be sure to use the heat gun, worked great breaking in rc car engines. Those power plants have insane tolerances.

Get back/Eric:

See here:
https://www.rcgroups.com/forums/showpost.php?p=39473399&postcount=18

I can email you the altered spreadsheet for 8 oz blends. PM your email for it.