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os 1.60 v/s moki 2.10

Old 04-15-2005, 09:38 PM
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serge760
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Default os 1.60 v/s moki 2.10

i have a world models giant ZERO what would be the best engine for that zero if i put a os 1.60 i have to put two pounds of nose weight in it,so i was thinking to put a moki 2.10 in it, are moki engines good?????

let me know
Old 04-15-2005, 09:55 PM
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JoeAirPort
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Default RE: os 1.60 v/s moki 2.10

Moke engines are very powerful and great glow engines overall. I have a 1.80 and a 2.10. Just don't mount one inverted I heard they are a pain. You might want to consider a gas engine if you need that much nose weight. The Moki engine and the radial mount will give you almost a pound more weight than the OS 1.60. With the ignition battery the gasser will give you plenty of weight. Almost 2 more pounds than an OS 1.60.

The one thing about the Moki (now Mark), it's hard to beat for $250. You a $60 BCM pitts muffler with that too. The radial mount is about $40 I think. So that's actually $350 total.
Old 04-15-2005, 10:14 PM
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Default RE: os 1.60 v/s moki 2.10

do i need a radial mount can i use a standard motor mount ,the cowl of the zero is so big i mount the engine sideways
Old 04-15-2005, 10:39 PM
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serge760
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Default RE: os 1.60 v/s moki 2.10

can i use byron 5%nitro and 18% oil in a moki2.10
Old 04-16-2005, 07:50 AM
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Default RE: os 1.60 v/s moki 2.10


ORIGINAL: serge760

do i need a radial mount can i use a standard motor mount ,the cowl of the zero is so big i mount the engine sideways
Yes you can use any mount that is designed to hold an engine of that size. Hanger 9 sells an aluminum beam type. Great Plains sells an adjustable one. I just suggested the radial since it is heavy (8 ounces). But it is expensive.


ORIGINAL: serge760

can i use byron 5%nitro and 18% oil in a moki2.10
Yes as long as it has some castor in it.
Old 04-16-2005, 09:15 AM
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serge760
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Default RE: os 1.60 v/s moki 2.10

thanks

how do you break-in a moki and what prop do i use

can i use my starter to run the engine??
Old 04-16-2005, 09:56 AM
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Default RE: os 1.60 v/s moki 2.10

Here's the instruction sheet. This is for a 1.80. The only thing that changes is the recommended prop size (I recommend the Bambula 18x8 for 1.80, Menz Ultra prop 20x10 for 2.10). Also the break in RPM is 6500 for 1.80, 6000 for 2.10).

http://www.rcuniverse.com/forum/upfi...34/Xv64158.jpg

Most starters do not turn over these high compression big bores. The instruction sheet recommends flipping the prop to start it. Very easy once you master it.


ORIGINAL: serge760

thanks

how do you break-in a moki and what prop do i use

can i use my starter to run the engine??
Old 04-18-2005, 10:29 AM
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serge760
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Default RE: os 1.60 v/s moki 2.10

thanks for the help

what about a OS gbx 3500 good or bad?????????????
Old 04-18-2005, 12:44 PM
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Ed
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Default RE: os 1.60 v/s moki 2.10


ORIGINAL: serge760

thanks for the help

what about a OS gbx 3500 good or bad?????????????
Both the OS 160, and BGX-1 are superb, user friendly engines. I run both.

> Jim
Old 04-18-2005, 01:14 PM
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serge760
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Default RE: os 1.60 v/s moki 2.10

can i mount thebgx-1 on the same motor mount like the OS 1.60 ,i mean standart mount like great planes motor mount 1.20 and up??????????????
Old 04-18-2005, 03:13 PM
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hilleyja
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Default RE: os 1.60 v/s moki 2.10

ORIGINAL: serge760

can i use byron 5%nitro and 18% oil in a moki2.10
Except for the new lo-compression versions being marketed by Dave Patrick Models, all large Moki's are designed as hi-compression engines. They use little to no nitro. High nitro content will not improve your performance and may reduce it.

I have heard 2 schools of thought on the oil content. First, the instruction sheet does recommend some castor content and my experience with my 1.80 would support that -- I got in the neighborhood of 350+ degree head temperature while breaking it in on my bench.

Some believe you can treat the Moki like the large Super Tigers, no nitro and very little oil. This is what Cline told me when I was setting mine up with his regulator. I have also heard that you should run between 18 and 20% oil in these engines. I follow the more cautious direction. I'm running Omega FAI fuel which is a 0% nitro fuel with 18% oil. The castor synthetic ratio is 20/80.
Old 04-19-2005, 06:01 AM
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RAPPTOR
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Default RE: os 1.60 v/s moki 2.10

[:'(] JUST GOT A MOKI 2.10 ,,WORST ENGINE I EVER HAD!! CARB IS BIG PROBLEM.. IF YOU ADJ. LOW END FOR GOOD IDLE,IS RUNS LEAN ON TOP END.. METERING SYSTEM IS NOT EVEN CLOSE!! WET START?? BIG FUEL LINE, REGULATOR?? I WANTED AN ENGINE ,NOT A DESIGN PROJECT!! OH YA..$10 GLOW PLUGS..10 HOUR BREAK IN.. ?? DONT KNOW YOU DID THE DESIGN, BUT IT MAY HAVE BEEN A, "CAVE MAN"...I DONT WANT ANY ENGINE THAT IS NOT RELIABLE,STAYS RUNNING ,..IT WILL COST YOU AN AIRPLANE IF IT STALLS OUT IN THE AIR,, AND IT DOES.. GO O.S. AND JUST FLY !! ANY FUEL, 20 MINUTE BREAK IN.. I GAVE MY MOKI TO A BUDDY SO HE HAD SOME SPARE PARTS.. IT HAD LESS THAN 7 FLIGHTS, NO LANDINGS WITH IT RUNNING!! RD
Old 04-19-2005, 07:33 AM
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Default RE: os 1.60 v/s moki 2.10

Rapptor wrote
[:'(] JUST GOT A MOKI 2.10 ,,WORST ENGINE I EVER HAD!! CARB IS BIG PROBLEM
Mokis are generally known as reliable and powerful engines. There must be something wrong with your engine/fuel/tank.

serge760, If you need some extra weight and do not want a gasser, another alternative would be a Super Tigre ST3250. They are rather heavy engines but have the advantage of very large cooling fins (good for cowled applications) and also the recommended oil content of the fuel is 10-12% which is good from an economy point of view.
This engine needs rather large props, 18*10 seems to work fine with my ST3000 which is the predecessor of the ST3250.

/Red B.
Old 04-19-2005, 07:37 AM
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trentos
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Default RE: os 1.60 v/s moki 2.10

Sounds like a Zenoah petrol engine woold be perfect here, preferebly the Zenoah 23, it is farley heavy for wot engine is, but it also has the power to even it out.

i think if money is a problem the Zenoah engine is fairly costly, but its worth every cent, ive seen many of them runing, and ive thrown around a few.
just thort it woold b handy to mention thanx .trent.
Old 04-19-2005, 09:46 AM
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Default RE: os 1.60 v/s moki 2.10

thanks guys

i think that i go with a OS bgx-1 3500,i love OS never had problems
Old 04-19-2005, 03:41 PM
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Ed
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Default RE: os 1.60 v/s moki 2.10

Excellent choice. Brute force power, and user friendly starting. Choke it about 5 times until your thumb is wet, flip it backwards once against compression, and it's off and running ! It's a lovely, lovely engine.

> Jim
Old 04-19-2005, 08:36 PM
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Default RE: os 1.60 v/s moki 2.10

thanks jim can i use a starter to flip the engine?????????
Old 04-19-2005, 10:04 PM
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Default RE: os 1.60 v/s moki 2.10


ORIGINAL: serge760

thanks jim can i use a starter to flip the engine?????????
Sure, but you'll need a big one, and you'll be amazed at how easy it starts by hand.
Old 04-19-2005, 10:24 PM
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Default RE: os 1.60 v/s moki 2.10

i just had a friend he cut his arm in the prop and had 29 stitches, that why i don't like to use my hands
Old 04-20-2005, 01:59 AM
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Default RE: os 1.60 v/s moki 2.10

The BGX and the 160fx make the same power but the 160fx weighs less and uses less fuel. If you want weight and power I would go Moki 2.10 or gas.
Old 04-20-2005, 09:43 AM
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Default RE: os 1.60 v/s moki 2.10

ORIGINAL: serge760

i just had a friend he cut his arm in the prop and had 29 stitches, that why i don't like to use my hands
The trick he describes is to just take the spinner between your fingers and flip it clockwise against the compression. If your airplane is adequately secured your chance of meeting prop should be negligible. I do this all the time with my OS FX 1.60 -- it is very reliable starting in the right direction. I rarely attempt it with my Moki 180 because the Moki has had a tendency to start backwards with this technique so I use my 24-volt starter.

Like, you, I would never try to start a large glow engine by flipping the prop in any direction. The resulting start is usually faster than my ability to get my fingers out of the way.
Old 04-20-2005, 12:28 PM
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Default RE: os 1.60 v/s moki 2.10


ORIGINAL: hilleyja

ORIGINAL: serge760

i just had a friend he cut his arm in the prop and had 29 stitches, that why i don't like to use my hands
I rarely attempt it with my Moki 180 because the Moki has had a tendency to start backwards with this technique so I use my 24-volt starter.
This may be because your low end is too rich. Leaning it out may stop that.
Old 04-20-2005, 01:35 PM
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Default RE: os 1.60 v/s moki 2.10

ORIGINAL: JoeAirPort


ORIGINAL: hilleyja

ORIGINAL: serge760

i just had a friend he cut his arm in the prop and had 29 stitches, that why i don't like to use my hands
I rarely attempt it with my Moki 180 because the Moki has had a tendency to start backwards with this technique so I use my 24-volt starter.
This may be because your low end is too rich. Leaning it out may stop that.
You may be correct and time will eventually get that motor adjusted properly. I've only got maybe 3 gallons through it. The last airplane I had it mounted on went to hanger heaven. I was having problems with the engine and that was the reason for the other plane's demize. At the time I felt the problems were related to the glow plug, and still do. I did not have a new plug at the field and ended up making a BIG [sm=disappointed.gif] mistake using someone else's used plug. I have just recently picked up a replacement and will get it together soon.
Old 04-20-2005, 08:36 PM
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Default RE: os 1.60 v/s moki 2.10

hilleyja,

I almost lost the same airplane twice due to not having my Moki 1.80 setup properly. Once was with a Cline regulator (leaking) and the other was last weekend using a Perry pump (erratic running). I got a little lucky both times and saved it. I am hell bent on getting a pumped or regulated fuel system working on my CAP232 120 because when that 1.80 is getting all the fuel it needs all the time it has scary power on uplines and hovering. Also a lean or fuel starved Moki sounds like crap. I am going back to the Cline (he sent me a new one) and I hope this time it doesn't stick open. Anyone using a Cline make sure to use a good filter in front of it.

Last weekend my 1.80 kept starting backwards and I heard from someone on RCU that a rich low end causes that. So I leaned it and sure as heck that was it.

Later,
Joe

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