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MOKI RADIAL Care and Maintenence

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MOKI RADIAL Care and Maintenence

Old 09-14-2021, 01:41 PM
  #4651  
Hinckley Bill
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I'll save everyone the effort of 'googling' for the recommended documents
Attached Files
File Type: pdf
Anatomy Of Walbro 0708.pdf (1.87 MB, 9 views)
File Type: pdf
Walbro Manual.pdf (788.4 KB, 6 views)
Old 09-15-2021, 05:23 PM
  #4652  
BobH
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Originally Posted by Maxam View Post
I personally am grateful that Saito, UMS, Valach and Moki manufacture these engines for us to enjoy. Yes, all of them have their issues, but we are modelers and as far back as the Brown Jr. creativity, work, thought and yes trial and error was required to improve performance and reliability. I have 9 radials and all required effort to bring them to top notch operation. The rewards have been great and I feel privileged to fly them.
Obviously you are not an engineer. Engineers, at least decent ones, are paid to produce a product that delivers what its intended design promises. What you seem to be saying is "hey thank you for making the new car I just bought. No matter I now have to supply the fuel delivery system for it".
If that makes sense to you in your world good for you. It doesn't in my world and I am an engineer.
Old 09-15-2021, 06:20 PM
  #4653  
Maxam
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The Moki does come with a fuel system. It requires routine cleaning. The fuel pump is an improvement. My profession is none of your business. I am however capable of making my radials run beautifully in my world. I have clearly explained my experiences on this forum as well as the UMS/Seidel forum over the last ten years to help others as others have helped me. That is the point of these forums. I am sure Moki can afford a team of top engineers like Pratt and Whitney. Certainly Moki sells as many engines as GM does cars, right?

Last edited by Maxam; Yesterday at 04:06 AM.
Old Yesterday, 05:26 AM
  #4654  
Captainbob
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If the design is so good then why is there such an overwhelming list of complaints on the same issue with this engine, and consistently over last 10 yrs.?
Don,t get me wrong the Moki 250 is a great engine, but using an off-the-shelf chainsaw carburetor was a bad idea. The grease clogging of the impulse line caused in- flight engine failures and ensuing crashes. The fix for this was to offer an electric fuel pump to bypass the already on-board ,existing, Walbro pump at an outrageous price.
The Edsel was designed by engineers too!


Last edited by Captainbob; Yesterday at 05:29 AM. Reason: Misspell
Old Yesterday, 06:41 AM
  #4655  
BobH
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Default Moki enginee

There are a LOT of people who buy the radial engines who DONT have the pre-requist skills to fiddle and futz to get them to run properly. Is this the fault of the buyer? Probably for some of them yes. For others probably not. It's a DESIGN FLAW regardless of what some one is able to personally achieve.
Case in point if a fuel pump really does make the engine run properly then why doesnt it come with it in the first place? If you are spending 3- 4k for an engine what's another couple hundred bucks.

I dont care what your profession is that wasn't my point. You may be a wonderful fellow for all I know we just have a different opinion on value.

Old Yesterday, 07:01 AM
  #4656  
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Sounds to me like we're in total agreement Bob.
To be told by the manufacturer or distributor that in order to get my engine to run right that now I need to spend 250.00 on a part that becomes another "single-point failure" in the system is a slap-in-the-face.
Old Yesterday, 07:52 AM
  #4657  
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Originally Posted by Captainbob View Post
Sounds to me like we're in total agreement Bob.
To be told by the manufacturer or distributor that in order to get my engine to run right that now I need to spend 250.00 on a part that becomes another "single-point failure" in the system is a slap-in-the-face.
Hey TomSounds like we should be adding one or two of these flawlessly engineered maintenance free radial IC engines to our working collections. Seems like these engineers really have it figured out. lol. Please stay involved. Read you on the other radial forums eh.
Aaron-
Oh an yeah. Where do I get one of those pinnacles of engineering prowess fellas. I would like to add one that does not require anything but adding gas to a tank.😃
Old Yesterday, 08:37 AM
  #4658  
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It has been my observation that many who can afford to purchase a radial, aren’t qualified to operate a radial.

A model radial demands far greater attention to maintenance, tuning and cooling than single cylinder 2 and 4 stroke engines.

While I have criticized the Moki ignition AND the alleged need for an auxiliary fuel pump, engineering improvements will not close the gap with a lack of operating knowledge and experience.

As a modeler of 50 years, engine collector, and owner/flyer of 6 radials (gas and glow), like Tom, I am grateful that there are enterprising entrepreneurs willing and capable of offering these miniature mechanical marvels.

IF you are hell-bent on owning a Moki, then you must accept the extra costs and potential maintenance issues that come with it. IF not, consider a Valach, UMS or Saito radials.

On the used (glow) market, there are O.S., Magnum, ASP, Seidel and Technopower radials occasionally for sale.

I feel lucky to have this many choices in which to indulge my love of round engines.
Old Yesterday, 06:54 PM
  #4659  
Moebius44
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Wondering if anyone knows if the Moki 300 use the same hub / bolt assembly as the 215 / 250?

Thanks...

EDIT: reason I ask is I have a NIB 215 with some (2-3 blade) props I'm about to post for sale and wondering if I can keep the prop drill jig...

Last edited by Moebius44; Yesterday at 06:56 PM.

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