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ASP/MAGNUM FS400AR Rebuild/Overhaul

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Old 02-05-2008, 03:09 AM
  #51
Kmot
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

Thanks Jeff!

Okay, I have finished the FS-70 overhaul so I will start back on the radial shortly.
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Old 02-05-2008, 07:30 AM
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

I've been following this thread from the beggining and you do have a gift for mechanics.
The last job done on the OS FS70 is marvelous, a true joy to the eye. I wish I had some lights on how to paint engines so well (hint ).
Either way, I hope to see you back on the radial and see that baby humming once again. Keep up the excellent work![8D]
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Old 02-13-2008, 06:31 PM
  #53
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

I removed the cylinders from the crankcase today. I had to cut down an Allen key to fit underneath the cooling fins. There is a clear cellophane gasket under the cylinder. You probably can't see it but the gasket is under the bolts heads on each cylinder.



I had previously numbered each cylinder position on the crankcase in pencil. But I wanted something more permanent since the pencil was getting rubbed off. So I stamped, very lightly, the number position on the crankcase.





To remove the name plate from the nose case I drilled the heads off the rivets and pulled the plate off. Then to remove the remainder of the rivets I used a #56 drill bit to bite into the rivet shank and then pull it out of the case.



Here is the intake manifold with the rubber boots removed.



And the brass sockets for the intake pipes removed from the manifold:





The sockets are o-ringed both inside and outside:



At this point, I knocked my camera off the workbench and broke the lens. [:@]
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Old 02-15-2008, 09:23 PM
  #54
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

I had been thinking about painting this engine. But I decided to polish it instead. It will be going into a sport plane of some sort, so I think being polished will give the plane a nicer touch.

Here are the pieces of the power section, polished up.



Here it is stacked up.



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Old 02-15-2008, 09:55 PM
  #55
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

....is this a fun hobby, or what ?

FBD.
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Old 02-16-2008, 01:37 AM
  #56
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

Why, yes. Yes it is!
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Old 02-16-2008, 01:46 AM
  #57
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

Kmot, nicely done! That will certainly be a beautiful piece when you are done!
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Old 02-16-2008, 01:48 AM
  #58
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

Thank you FP! This is just the first part of polishing. Wait till it's shiny!
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Old 02-16-2008, 04:47 AM
  #59
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

I'm speechless[X(][X(][X(]
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Old 02-16-2008, 08:29 AM
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

Now thats pretty neat[sm=thumbs_up.gif]
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Old 02-16-2008, 08:35 AM
  #61
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

Hi SJN , have you flown your jamara stearman with the asp on yet?
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Old 02-16-2008, 09:29 AM
  #62
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

nope...I have been lazy, and not finished the plane yet.
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Old 02-27-2008, 06:37 PM
  #63
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

Kmot, now that you're done with the "Green Machine" O.S. engine, lets get back to your radial. More pics, please....
(since I can't afford one, I'll settle for checking out yours. This is the kind of article I'd like to see in the publications!)[sm=thumbup.gif]

Now where's my popcorn?
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Old 02-27-2008, 08:54 PM
  #64
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

In my best John Wayne voice: "thanks, Pilgrim"

Actually, as is typical, I have been sidetracked and am working on something else. That mad Russian МДС 10cc as well as a model boat. But I will be getting back on it soon. I need to do more polishing so the next pics will be of more polished parts. Nothing too exciting.
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Old 03-11-2008, 05:39 AM
  #65
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

great thread guys so is this a lone case or are there more unhappy campers out there that have had this engine fail. I have been making enquiries to buying one and have been told they run much better with the carby from the os Radial. My plan was to put one in a 10kg 100" Corsair, do you feel the motor would have the guts to fly this model? The model flies well on a 62 Zenoah.
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Old 05-07-2008, 05:23 PM
  #66
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

I got back to working on this engine again. I spent four hours today and got two parts polished. The engine mount, and one cylinder head. Four more heads to go... [&:]

I like the result so far. After the heads are all polished, each one will have to be individually torn down so that the polishing detritus can be cleaned out. As you can see, this is a time consuming process!

The head is attached to a stick, so that it can be polished and not flung away by the buffing wheel. Also helps with the burned fingers!

First one side is buffed. Then the head is removed, turned around, and the other side buffed.






This is "Mr Big Boss Buff" and he's a real bear! Standing at this for 3-4 hours at a time is enough, thank you!



This is the engine mount. I did not attempt to polish the inside. It looks good with just the outside polished.



Cylinder head flipped around and buffed out on the opposite side. It's finished here.









Some side by side pictures of a polished versus non-polished head.











Sitting on the cylinder:





That's all for now!

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Old 05-07-2008, 05:29 PM
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

I, dear sir, take of my hat to you and your work!

Great job Kmot, I was wondering when would you post some more work on this baby [8D]
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Old 05-07-2008, 05:38 PM
  #68
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

Thank you for the kind words!
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Old 05-08-2008, 03:24 AM
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

Outstanding Tom
So if I send over my engine, then............


Great work, it realy turns it into a polished gem
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Old 05-08-2008, 07:55 AM
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

It's got to be one , if not the most beautiful 400R's in the world. Awesome Tom. Could you please shed a little light on the polishing process you are using?

Geo
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Old 05-08-2008, 10:45 AM
  #71
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

Thanks fella's.

Well, the process is really quite simple on this one. Because the parts are large enough, I can use the big buffer with the 8" wheel. And lots of brute force.

To preface, on smaller engines like the Saito and OS singles I have done, I will use a combination of needle files, and progressively finer cloth backed abrasive rolls until they are very smooth. Then I use a Dremel with a cotton buff and polishing compound.

On this FS400AR I simply use the big buffer with brown Tripoli buffing compound and go to town on it. The brute force of the big wheel, speed, and compound polishes the parts without needing to sand them first. (Caution must be used, however. Because this thing will grab parts out of your hand and fling them so far you never will find them. Sometimes it will grab a part and when it flings it, it hits the ground first and damages the part. Now that I have learned about these dangers I have moved the buffer so it is against the wall of my shop. At least the parts can be found if they get grabbed out of my hand. )

Anyway, I just keep applying compound to the wheel and holding the part against it until it shines.
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Old 05-09-2008, 04:32 PM
  #72
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

Three more hours of buffing, and the last four cylinder heads and valve covers are polished.



Now that all the major pieces have been buffed out, I get to do them all again. [X(]

This time with red or "Jewelers" rouge buffing compound. This will give the metal that jewel like quality I am looking for. [8D]
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Old 08-06-2008, 03:30 PM
  #73
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

I have an ASP 400-SR that I plan to put into a Concept 1/4 scale fleet bipe. I have had the engine for about a year and have not run it yet. I purchased it through e-bay. It has never been run and am I glad I have waited. After seeing what happend to kmot, I have decided it might not hurt to tear down the engine and replace the link pins.

Thanks for sharing all the info on your ASP 400 kmot, for sure you have helped a lot of people as a result .
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Old 08-06-2008, 04:31 PM
  #74
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

You're welcome.

I am in the middle of some other projects (as always) and have not yet got back to the 400 radial but will be by the end of summer I expect.

I have an extra set of precision CNC'd and hardened alloy link pins. If you are interested in buying them PM me.

-Tom
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Old 08-06-2008, 05:01 PM
  #75
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Default RE: ASP/MAGNUM FS400AR Rebuild/Overhaul

Yes, I would be very interested in the link pins you have. Give me a whay of contacting you and we can discuss price, etc.
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