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MOKI RADIAL Care and Maintenence

Old 10-08-2015, 09:01 PM
  #3526  
Remaking
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Here's the casualty list on my munched Moki 250 that ate itself:

Parts list needed:
  • 5 pistons with rings
  • 5 head gaskets 41mm id
  • 5 cylinder base “0”rings
  • 5 crush rings for exhaust 14mm id
  • 10 crush rings for intake 10.5mm id
  • 1 push rod 80mm long
  • 1 #4 cylinder with cut out on sleeve
  • 2 intake valves
  • 1 exhaust valve
  • 10 cam followers 25mm long
  • 5 Teflon rings 14mm
  • 1 connecting rod retainer plate with mounting screws
Old 10-09-2015, 12:20 AM
  #3527  
marksp
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The price of your original engine divided by 35 flights is about $100/flight. Can't think of very many other things that bring the same grin for less!

Buy a new one and have fun! Then put your old one back together and bolt it back to the mounting board and use it a beautiful desk art!

Cheers

Last edited by marksp; 10-09-2015 at 12:22 AM.
Old 10-09-2015, 03:07 AM
  #3528  
jbaldwin
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Based on the information that I have found on the cost of parts for a Moki engine (if you can get them) , you are better off to buy a new engine.
Moki will not respond to request for parts. I have been trying since March 2015. It is a great engine but when it breaks or is damaged, it becomes
a box of trash. I going with a different brand!


Jim
Old 10-09-2015, 03:40 AM
  #3529  
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Judging from everyone else's inability to get parts, you might generate enough from selling your "good' parts to buy a new motor!
Old 10-09-2015, 07:38 AM
  #3530  
JohnVH
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Gotta love the sound!

https://www.youtube.com/watch?v=RtY6JHq0yIo&feature=youtu.be
Old 10-09-2015, 10:58 AM
  #3531  
jbaldwin
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That is exactly what I am thinking about doing. My engine only had less two hours on it; mostly break in time on a test stand; only about 10 minutes in the air!

Jim
Old 10-13-2015, 10:43 AM
  #3532  
Growler84
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Originally Posted by jbaldwin
Based on the information that I have found on the cost of parts for a Moki engine (if you can get them) , you are better off to buy a new engine.
Moki will not respond to request for parts. I have been trying since March 2015. It is a great engine but when it breaks or is damaged, it becomes
a box of trash. I going with a different brand!


Jim
I'm with you on that notion. We have been trying for a month to get a valve spring, valve and the required seals/gaskets. Goetz Vogelsang has been working it hard but he too cannot get a response from Moki. My friend Phil joked half seriously about parting out the brand new 250 he has in a box still and making enough to buy 2 new 250s! That actually sounds like a plausible plan.

So...has anyone heard anything on the US-designed and built R2800-looking engine those guys were developing? Did anyone ever get one? If they assessed this situation with Moki and fielded a good running and SUPPORTABLE engine they'd put Moki out to RC pasture.
Old 10-13-2015, 11:10 AM
  #3533  
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I think the Pegasus development is still ongoing, but the problem with them (in my mind) is that its a 200cc 9-cylinder motor that weighs in at over 13 pounds without a prop or hub. The Moki 180 weighs about 9 pounds, and the old 215/250 (just for comparison) weighed about 12. That's a lot of weight on the nose to offset.

But, with that said, I hope they do get it out to market. We need options in this big 4-stroke world.
Old 10-13-2015, 11:11 AM
  #3534  
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Uh- Oh... their internet site is no longer available! http://pegasusengine.com/
Old 10-13-2015, 11:34 AM
  #3535  
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Confirmed... outta business.
Old 10-13-2015, 11:57 AM
  #3536  
Growler84
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Crap....
Old 10-13-2015, 12:16 PM
  #3537  
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They had issues with ignition, rods, low power... decided to fold it up and quit.
Old 10-13-2015, 04:03 PM
  #3538  
jbaldwin
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I received word from AMR that Moki has contacted them after eight months and ask if the needed to order any parts!!! AMR ask if I still wanted
the parts for my 150. My reply of course was yes--if the prices are reasonable. I don't want to spend half the cost of a new engine to
repair a broken one. I assume that they are checking the prices. If I get a positive response I will let you know

Jim
Old 10-13-2015, 04:38 PM
  #3539  
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Originally Posted by reyn3545
Uh- Oh... their internet site is no longer available! http://pegasusengine.com/
http://authenticscale.com/engines-specifications.html

This is the site you need to go to for the R2800. The owner told me a couple months back they are reworking the engine with a new ignition with low profile boots, adding a super charger which will double the horsepower and at a price point of $3500 including all the scale details. The scale items will no longer be an option only the hubs and props will be.

Suppose to be available by end of the year and other engines are in development as well. Talk to him, his name is Antonio and a great guy to talk to. His number is at the bottom right of the page and he will answer any questions you have.

Mike
Old 10-13-2015, 04:45 PM
  #3540  
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Originally Posted by rcguy5
http://authenticscale.com/engines-specifications.html

This is the site you need to go to for the R2800. The owner told me a couple months back they are reworking the engine with a new ignition with low profile boots, adding a super charger which will double the horsepower and at a price point of $3500 including all the scale details. The scale items will no longer be an option only the hubs and props will be.

Suppose to be available by end of the year and other engines are in development as well. Talk to him, his name is Antonio and a great guy to talk to. His number is at the bottom right of the page and he will answer any questions you have.

Mike
That's encouraging.. thanks!
Old 10-13-2015, 04:52 PM
  #3541  
Jaketab
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Anyone tried contacting Heilemann Sternmotoren in Germany as a source for parts ????
I emailed them some time back and they were prompt to respond.

http://www.heilemann-sternmotoren.de/en/shop

Regards - J Tab
Old 10-13-2015, 08:35 PM
  #3542  
RichardGee
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I am wondering why no one is mentioning the Evolution 260 as an option to the Moki 250 (Evo 160 to Moki 150)?? Cheaper, readily available, and from what I have read, more durable and less prone to problems..?
Old 10-14-2015, 04:38 AM
  #3543  
Maxam
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The EVO 260 is a nice engine and runs cool. It is quite a bit larger in diameter. The 160 had some issues with leakage between the head and the cylinder. I had a 160 and it ran well swinging a 28x14 but I cannot remember the rpms. I think it was 4500. -Tom
Old 10-14-2015, 12:08 PM
  #3544  
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Originally Posted by reyn3545
That's encouraging.. thanks!
No problem, if by chance you talk to him give us an update. I may call him sometime in November if not.

Thanks, Mike
Old 10-14-2015, 03:41 PM
  #3545  
Growler84
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Originally Posted by Maxam
The EVO 260 is a nice engine and runs cool. It is quite a bit larger in diameter. The 160 had some issues with leakage between the head and the cylinder. I had a 160 and it ran well swinging a 28x14 but I cannot remember the rpms. I think it was 4500. -Tom
The CARF warbirds are designed specifically so the EVO will not fit. This stems from some backroom story about CARF and EVO disagreements. I must say I've never seen an EVO 260 in the field.

Back to Moki, Mike sourced replacement valve springs from McMaster Carr. Once they arrive he will make sure they are the real deal and that problem will go away. My other Moki compatriot Phil told me Goetz has been tied up with some health issues but is now on the rebound so we'll have him fighting our parts supply battles again. I wrote an email to Airworld in Germany and they promptly threw a valve spring in an envelope and sent it to me. So there is another source though it may be easier to go through Goetz since he deals with Airworld all of the time.
Old 10-14-2015, 04:33 PM
  #3546  
jbaldwin
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Greg,
Could you share the email address to Airworld?

Jim
Old 10-14-2015, 06:20 PM
  #3547  
Remaking
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Originally Posted by RichardGee
I am wondering why no one is mentioning the Evolution 260 as an option to the Moki 250 (Evo 160 to Moki 150)?? Cheaper, readily available, and from what I have read, more durable and less prone to problems..?
Been around and heard a couple of EVO 260's and they just don't have the sound, power or impact the Moki has. They also don't make the smoke the Moki does as the collector doesn't get as hot. Plus Horizon is constantly out of stock on them, almost 9 months the last time.
Also, at the next RC show walk into the Horizon booth and ask anyone a question about the engine and watch the blank stares. 9 people in the booth and none of them know a thing about the engine.
Old 10-15-2015, 06:09 AM
  #3548  
Maxam
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Remaking, You are completely correct, the Moki's sound far better than the Evo's -Tom
Old 10-15-2015, 08:18 AM
  #3549  
Growler84
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Originally Posted by jbaldwin
Greg,
Could you share the email address to Airworld?

Jim
www.airworld.de
[email protected]

Goetz Vogelsang gets parts from Airworld so you may want to try him first at [email protected].
Old 10-15-2015, 02:35 PM
  #3550  
jbaldwin
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Thanks Greg. I have been working with him for several months and hasn't had luck getting the parts either.

Jim

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