the Wasp

My Feedback: (1)

nice deal there !!!!
nice color too.


oops, I had that OS 61fx with an APC 12x6 in mine, it was an ARF so it had the 71" span, that 14x8 should be turning around 9000. it will really go

Jim

Glowgeek

Oops, meant to ask Crunchy if that WM red P-51 is a 60 size.

Quikturn

My Feedback: (12)

Nice!

the Wasp

My Feedback: (1)

there is something about the 4 start's I like,
I plan to put my Saito 100T in it, I have got to get to work on it, I plan to round the tips of the wings

oops, have the 4 Start 64's cowl for it, the 100T's cylinder heads will be sticking out the sides of the cowl

Jim

Hobbsy

My Feedback: (102)

What size would you like a couple of them to be? Thanks

Captcrunch44

nope that is the 46 size.
they have a series of them. I had one a while back with a Rossi 60 on a pipe. Clocked 125 between the trees. Fun plane fast build oh wait it’s any ARF. Fast Assembly.

Glowgeek

Thanks for the compliments on the 4 star guys, I wish I could take credit for such a beautifully built model. The fa100 should allow for huge consecutive loops, long vertical up lines and endless high alpha knife edges, just what I like in a sport plane

FA100
APC 14x8 sport
15% Nitro
15% synth/2.5% castor
Temp 53°
Humidity 60%
Peak 9400
Idle 1900-1950
HP: 1.838 (calculated)
Static thrust: 10.15 lbs (calculated)
Pitch speed: 61.8 mph (calculated)

AUW for this 4 Star 60 is 8.38 lbs. This engine/prop combo is a good starting point, eh?

Captcrunch44

yeah
the 100 in my hog is awesome! I need to build a 4*60 to put a 100 in.
that combination should be great. Better then a125 even.

Captcrunch44

Oh hey glow geek.
what kind of number’s do you have for a speed prop on a 125.
I was going to use a 100 but the 125 looks awesome in the plane.

Glowgeek

Are you talking about your WM P51 Red? Is it 60 size?

acdii

If I can get my 125 to run reliably, it will be fun to fly the Stang's in a formation. Mine is probably going to be heavier so wont have as much speed, but will still look cool. I still have to redo the landing gear on that 4* you sent me, haven't had the time to figure out replacements yet. I don't remember what engine I have in it either.

Hyjinx

Hey guys
Big field dayWe have a used R90 just bought to mount on the stand and run up!
Have to remove my Sirius F-300 five cylinder I have been test running from the stand first. Its ready to mount on Gary's beautiful Stearman he sent home with me a few weeks ago.

Maybe video later....

Glowgeek

pics, or it never happened

Hyjinx

Pressures on 😲

Glowgeek

More weight has little to do with straight line speed but will force you to use more elev in turns which of course creates more drag and scrubs off speed. Most pylon guys don't worry about weight increase as long as they're adding strength to the plane eg glassing the center of one piece wings, adding sheeting, upgrading to solid balsa tail feathers etc. Drag is the real speed killer if you want to go 115 mph +.

If there ever was a way to end up with a bunch of unused props hanging on your wall it's by trying to eek out more speed from a go fast plane. Thrust to overcome drag vs. Pitch to go faster is a delicate balance oftentimes amounting to cutting down prop diameters as little as 1/4" in diameter for hard core racers. I'll never go there but I do have over a dozen very high pitch props that I'll likely never use again...lol

To go really fast with a warbird you'll have to prop your saito well beyond 10k on the ground in most cases.

Hobbsy

My Feedback: (102)

I just put 55 minutes on the new 100 GK, Iran out most of a 14 oz tank then refilled. I deviated from my norm by installing a CH Ignition system first. I set it up a 30 btdc. At about the 53 minute mark I went for max rpm, I had done a few shots to full throttle but the mixture was not peaked. As it approached 9,250 rpm the rpm suddenly dropped to about 5,300, no amount of mixture changing would improve it. So I assumed that the timing ring had slipped. On checking it out the grub screws in the ring were still tight, on removing the ring there were no skid marks indicating they had slipped. So the conclusion is that the prop slipped, it probably won't ever do that again. The prop is a 14 x 7 three blade.


Running at 6,500

Glowgeek

I used about 3/4 oz. per minute breaking in my fa100 at the 4000 and 5000 rpm settings. How is it that you use so little fuel during break in Dave? Are you sure you're running your engines rich enough during break in?

Hobbsy

My Feedback: (102)

I'm sure, when I first started it, it missed and sputtered quite a bit, I only let it do that for the first ten minutes per the instructions, then lean to smooth but still rich running. No sense lubricating the weeds trying to break in a cold engine. My preference is to keep near the optimum temperature for clearances sake. I haven't ruined one yet. Honest.

Glowgeek

Maybe that's the difference, I run them as rich as I can for the first 20 min. At 4000 rpm with the ignitor on, at 5000 without the ignitor and almost flooding out. That first 20 minutes is just to make sure the intial high wear debris is washed out through the vent and to keep cylinder temps down. There are no harmful clearance issues during that time (it's not a two stroke). During the 6000 and 7000 10 min runs is when I lean for higher cylinder temps finalizing with another 10 min run to set needles close enough to fly but still on the rich side of course.

Different strokes I guess.

Captcrunch44

nope that is the 46 size Dago red from WM

Glowgeek

It's going to be very fast with a 125. Wouldn't hurt to do some reading on the warbird racing pages for mods, otherwise.........poof!

Hobbsy

My Feedback: (102)

That is a gorgeous plane Lonnie, somebody did a fine job. I have it's yellow little brother.

the Wasp

My Feedback: (1)

man, an APC 14x8 turning 94-hundred on a clipped wing 4 Star 60,

she going na go

Jim

Glowgeek

Very nice Dave, very nice. It's in your man cave, do you still have it? Is that a 62b?

Captcrunch44

Boy all you guys showing off your pretty planes.
here is my little Dago Red with the little 125.