mecam

My Feedback: (3)

Which engine will give the Hanger 9 Edge 540 more performance, a Saito 1.80 or a Moki 1.80?

rcflier_gi

My Feedback: (2)

I don't have direct experience with those engines but I would say the Moki 1.80 would give you more power.

w8ye

My Feedback: (16)

The Moki has the edge.

Ladyflyer

My Feedback: (2)

Moki

Jerkey

We just had one of our anual funflys today at our field. A guy there had a Moki 2.10 in his Hangar 9 540 and it performed great. Very sweet running and reliable engines.

Good Luck,

MIke

jharkin

My Feedback: (2)

The moki will almost certainly have more horsepower, its a 1.8 2-STROKE.

The saito, being a 4-STROKE, will have less hp but will probably turn a bigger prop and be quieter.

Jim D

My Feedback: (8)

Not quite, my Moki 1.8 turns an 18x8 Pro Zinger around 8300 RPM on FAI fuel, tuned pretty rich. The Saito 180 is not even in the ballpark with it on 18 inch props.

jharkin

My Feedback: (2)

I never said it would turn a larger prop faster than the 2 stroke. I was just pointing out that the 4 stroke will reach its max power at a lower rpm than a similar sized 2 stroke and thus will be able to output its max power with a larger, slower turning prop.

The 2 stroke will still of course produce more power than the 4, it will just do so turning a smaller prop at a higher rpm.

PHILLCO

My Feedback: (6)

I WOULD GO WITH THE MOKI. YOU BE GLAD YOU DID.

Jafrh

My Feedback: (1)

Get the Moki, you'll be happy you did. Just make sure you read the break-in instructions!

daven

My Feedback: (1)

Definately the Moki, but I wouldn't overlook the O.S. 1.60FX.

The o.s. will outperform the Saito also, and is a fantastic starting and running engine.

Phil Cole

One of the best places to resolve this sort of question is www.rcfaq.com.

A look at the RPM data base will show that the 25-30 cc engines all seem to produce their maximum power around 9000 RPM.

xkadet

Glad that you mentioned the OS 1.60. I'm thinking of putting one on an ultrastick (pre-lite). Any ideas on who this might work? Everyone swears by the Saito 1.80, but I'd like to try a two stroke on it for power to weight ratio issues.

thanks
xkadet

JoeAirPort

My Feedback: (41)

I've tried both engines in my Kangke CAP232 25% and the Moki 1.80 is waaay better, trust me. I would use a Perry pump if I were you. That way the engine runs the same mixture full to empty tank and the CG is perfect for the entire flight. That's my setup and it's very impressive. Hovering is at just under half throttle on my 14 lb plane. The Moki will burn less fuel so you can use a 16 oz tank for about 9-10 minute 3D flying with an ounce or two left. WOT is about 8 minutes with an ounce left. Also the Morgan 0% nitro fuel is about $9 a gallon vs the 30% heli that you need on the Saito ($25 a gallon). Use a Bambula 18-8 wood or Menz S 19-8. I love these engines. A gallon of fuel will last me a couple of weekends flying both days.

The Moki will turn one to two prop sizes higher than the Saito 180.

JoeAirPort

My Feedback: (41)

This is true but remember that all engines produce the most power at higher RPM's. For aerobatics and especially 3D, what really matters is the way it delivers torque. And the Moki has a nice flat torque curve (not peaky). Check out the following graph of the Moki 2.10 which is very close to the 1.80. Notice the torque between 6400 and 9400. It peaks at 8000 RPM. That is where the most usable TORQUE is for 3D or other aerobatics. The HP peaks out at about 9600 RPM but the torque falls off and this is not usable torque for aerobatics (bad acceleration). You want your peak RPM to happen very close to your peak torque for the best transition (= best acceleration). That would be around 8000 for the Moki 2.10. The 1.80 would be around 8400 RPM IMO.

So my experience is that the Moki is a very good glow engine for aerobatics. The 4-strokes have even better torque delivery but that don't have the brute power of the Moki and use a lot of expensive fuel.

FlyHard

I would definitely overlook the OS160FX. It will pull the H9 Edge around but not much else.The OS160FX has very poor low end performance.The Saito 1.8 and the Moki 1.8 are both a better choice. My choice would be either the Moki 2.1 ( use the left stick) or even better a YS 1.4 FZ and up if the budget will take it.

PLANE JIM

My Feedback: (109)

I do not understand about running the saito 180 with 30%-mine performs fine on 15%-my moki performs well also, as long as you don't start chasing the mixture screw-

Rudeboy

Duh.... MOKI!

seanychen

My Feedback: (4)

Some hard rpm figures that I have personally taken:

Moki 180 w/ 5% nitro
APC 18x6W @ 9400
Pro Zinger 18x8 @ 8600
MA Scimitar 19x8 @ 8000

Saito 180
APC 17x6 w/ 15% nitro @ 9700 rpm
APC 18x6W w/ 30% nitro @ 9000 rpm

Saito 180's main advantage is its light weight. But if the plane needs nose weight to balance, which may very well be the case for H9 Edge, then Moki 180 is better choice. I think the sweet spot for Moki 180 3D would be the Bolly 19x6 carbon prop. It's expensive, and presumably heavy. Or go for Mejzlik 20x6, which should peak @ 8000 rpm.

PlaneKrazee

My Feedback: (14)

The OS 160FX will make almost the same power as the Moki on the same fuel but weighs much less.

This thread is kind of funny. There is no realistic comparison between the Moki and the Saito. The Moki weighs over a pound more with muffler and makes much more power on no or low nitro compared to the Saito.

Vortec

A flyer at my field has said plane with a Saito 1.80 and it does fly it ok ,but he keeps looking over my Moki in a katana and would like to change but he has already spent the dallars on the wrong choice.

JoeAirPort

My Feedback: (41)

That's no problem. I took my Saito 180 out and installed the Moki 1.80. I sold the Saito 180. Takes a little work but worth it in the end.

FlyHard

What change did you notice in your models flying after the switch to the Moki

JoeAirPort

My Feedback: (41)

The Moki has total authority as far as throttle goes. This CAP232 was 13 lbs 4 ounces with the Saito 180 and 14 lbs with the Moki 180. It was just too heavy for the Saito. Now it pretty much just blasts forward when you go WOT. Vertical is very very good. You pull up and it goes to the clouds in no time. Hovering is way better. It's about half throttle now. I didn't even attempt it with the Saito 180 since I only did one flight with it and was not comfortable with the power it had. For 3D the Moki 1.80 is the ticket for an ARF 13 -14 lbs. The Saito would be good for about 11-12 lbs max for 3D. You do have to always manage your throttle when you have that much power (the Moki). The other nice thing is that the Moki 0% nitro fuel is only $9 whereas the Saito 180 fuel is $15-25 a gallon. The Moki also burns less fuel so I only run a 16 ounce tank on my 14 lb CAP. That's pretty good for an engine this size. The Moki runs K&B 1L plugs that are $2.50. That Saito use a type F plug which around $8-10. The Moki sounds pretty cool too.

It's just the perfect power plant for a plane this size and weight IMO.

maxtenet

This thread is a joke, right?
Max