cadconversions

My Feedback: (21)

Ok, I'm getting ready to install my first gasser in my Goldberg Pitts M12 ARf. Great plane and I don't want to screw it up.

I purchased a first place engine 1.3 almost a year ago waiting on the perfect plane. However, now that I'm getting close to installing it I'm having a lot of questions.

First of all, I noticed that my walboro carb looks nothing like the one on their website. I've sent them an e-mail but knew one of you would know incase they don't get back with me. In the first pic, you see a yellow tube coming from an inlet in the carb. This is not the fuel feed because that is the black nozzle on top. What is this and what is it for? My carb doesn't have this.

Also, how do you choke a FPE engine since it doesn't have a carb? Velocity stack? Which one and how do you know if it fits? Since the cowl is so big (almost 9" in diameter) what happens if a velocity stack doesn't get the outside the cowl?

Also, what is everyone's opinion on removing the spring off the throttle assembly?

Any other help or info would be greatly appreciated.

Stik-n-Rdr

I can't help you with issues related to your FPE and the Pitts, but am wondering if you're going too small on the engine size.

The OS 160 sold with the Pitts at TH is at the lower end of the power spectrum for that plane and has much more power than a 1.3 gasser, right?

I'm looking into the same setup and am thinking a Brison 3.2, a DA 50, or the Fuji 50EI (cheaper) for the GP Pitts.

Just my two cents. Good luck and enjoy that AWESOME plane!

cadconversions

My Feedback: (21)

This isn't the GP Pitts...It's the Carl Goldberg Products Pitts M12 Monster.... Thanks.

smallplanes

My Feedback: (3)

The hose on the carb is for crank case pressure to your carb. So that it will pump fuel. You don't even have to have the stack on it. I'm running a few gas motors now with out the stack and they run great. One of those is a FPE 3.2

Thanks
smallplanes

cadconversions

My Feedback: (21)

I don't have anywhere for another line to attach to other than the black fuel nipple on the top.

tkg

My Feedback: (1)

I don't think this is going to be enough engine, except just for basic flight. The power level is in the 90 4c range.

ChickenStick Rick

My Feedback: (674)

Hey Cad,
You only need the fuel inlet to the carb. Gassers do not need muffler pressure. Just vent the tank to the outside of the fuse. I have the same plane and going with the Saito 150. Was thinking about the FPE 1.3 but had the Saito on the shelf. Good luck and let me know how the performance is.

cadconversions

My Feedback: (21)

TKg, the FPE 1.3 will put out 10+ lbs of thrust with a 16x8. On a less than 12 lb scale plane when has 10 lbs of thrust not been enough? Also, why would a 1.3 gas be on the same power level as a .61 2 stroke or .91 4-stroke? Doesn't make sense. Just curious and really new to this stuff.

I have found other motors, Zenoah 26 with electronic ignition, that perform better but are still a little heavier and doesn't include a pitts muffler...

I don't know if I'll be completely happy with this motor but have a feeling I will. Pitts aren't meant to hover, in fact, no real scale plane does completly. Just want a good tumble or two, some spins, loops, and rolls..oh yeah - all of this on $2.00 of gas for a day of flying.

Chicken, in the pic from FPE, they have the fuel inlet nipple and also have the yellow tube running from another nipple on the carb. Didn't know if you noticed that or not. Still trying to get a definite answer for what it is and why. Crankcase pressure makes sense on a 4C but I don't know about a gasser???

Antique

My Feedback: (4)

A 16-8 at 7400 will not put out 10 lbs of thrust...That number comes from the ThrustHp chart...My G26 shows 25+ lbs on that chart, actual pull with a scale on the tail wheel is 17+

cadconversions

My Feedback: (21)

If I knew about your g-26's I would have jumped on them instead....to bad for me. Great looking stuff. What kind of thrust does it show for 16x8 at 7,400?

Antique

My Feedback: (4)

ThrustHp shows 10+ for a 16-8 at 7400...

cadconversions

My Feedback: (21)

So your saying in real life it won't put that much out? Gottcha. Thought 25+ lbs out a G-26 was amazing but had read a lot about your motors. Nothing but good...

Antique

My Feedback: (4)

I did too, until we put the scale on it...Still very good...

cadconversions

My Feedback: (21)

Hum....got me thinking... FS: F.P.E. 1.3 with no time on motor still NIB... Nah, better keep it. Maybe

smallplanes

My Feedback: (3)

A friend of mine is a fpe dealer and he flys with us also. He had a 1.3 on a ultra stick lite 1.20 size and it did not pull it good at all. He took it off and put a zenoah G23 on it and it does very good, he loves it now.


Thanks
smallplanes

cadconversions

My Feedback: (21)

Thanks guys...now you've got me "Scared". The US lite weighs less than 11 lbs and only has one wing with less drag. What to do, what to do.

I'm not looking for "to the moon" vertical but scale flying. Does anyone think the 1.3 will be able to deliver that?

Antique

My Feedback: (4)

Some of the FPE engines I have seen are timed retarded at about 18 BTDC...Changing to normal 28 degrees makes a big difference of at least 600 rpm..Check your timing, if it's not 28 it should be.......No real reason a 1.3 FPE shouldn't run about like a G23 with a 16-8 prop...[8D]

cadconversions

My Feedback: (21)

Stupid question from a gas newbie... How would I check the time on an electronic ignition?

cadconversions

My Feedback: (21)

Also, what's your opinion on the MVVS 1.6 or RCS 1.4 / 1.8?

Antique

My Feedback: (4)

Have not seen or tested those...
Go to C&H at www.ch-ignitions.com for timing instructions...OR
Take the spark plug out, connect to the ignition and lay it on the cylinder;;
Turn on the ignition, SLOWLY rotate the crank counterclockwise until you hear the spark..Put a pencil line on the hub and on the case..Turn off the ignition...Look in the spark plug hole or the exhaust port, close the throttle and put the piston on top dead center...Multiply the diameter of the hub and case where you put the pencil mark by .244, write it down...If the two lines are not this far apart it is not timed ad 28 BTDC... If you can move the sensor do it, of not you will have to relocate the hub on the crank....
This works on ALL electronic ignitions, no matter what the diameter of the hub....

cadconversions

My Feedback: (21)

I'm about as completly new to gas and glow as you can get for someone with 5 years of flying. Now, if you want to know something about an electric motor/ESC/battery - I'm your man.

Anyway, thanks for the link and info.

Kevin

DadsToysBG

My Feedback: (35)

Cad, your starting to listen to to many people. that fpe 1.3 will have the power you want. It's timing is 0 to plus 30. Use a 17x6 APC. You only need one fuel line the other is a vent line to the outside. Dennis

tkg

My Feedback: (1)

Sorry wrong, the FPE 1.3 and the 2.4 have FIXED timing. There is an option of C&H for the 2.4 but not the 1.3.
There is a pump port fitting on the engine, it the one with the hose to the intake manifold and a fuel inlet fitting.
Will it fly yes YES, will it fly like a modern Pitts, nope, sorry.
I guess since you already have the engine try it, its not hard to change to a bigger engine later.
PS just ran a G-23 with Ch ignition 17x6 APC 8700, 16x8 APC 8800 rpm

cadconversions

My Feedback: (21)

Thanks guys. I'm still not sure what I'm going to use. I think I could live with the power of the 1.3 but don't know that I don't want a stronger motor to be able to move it between different planes. I'll keep sleeping on it.

Thanks guys!

Kevin

Antique

My Feedback: (4)

Hety TKG, those are more like G26 numbers, You sure it's a 23 ?