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Everything Radial Engines

Old 07-30-2007, 08:05 PM
  #801  
sebthefly
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Default RE: Everything Radial Engines

Thanks Sonnich....Very cool. Also very brave to start it inside! Maybe the exhaust ring makes a big difference, but when I ran mine with just the short exhaust stubs there was oil spray going everywhere. I am waiting for a new crank bolt to arrive before I reassemble mine. A note to anyone out there who is looking at stripping their ASP/MAgnum radial.... the crankbolt holding the master rod on is LEFT HAND THREAD! Thus when I tried to undo it, I was actually tightening it and eventually snapped it. Oops. Just Engines in the UK carries spares. I also have new bearings ready to go in.
Also make sure you use LOTS of after run oil as the ferrous metals in these engines are very prone to corrosion.
Old 07-30-2007, 10:06 PM
  #802  
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Default RE: Everything Radial Engines

Thanks for the heads up about the crank bolt threads. Some of us don't realize our own strength and "it's just another stubborn bolt" until it goes 'snap'!
Old 07-31-2007, 04:38 AM
  #803  
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Default RE: Everything Radial Engines

hehe, well, with the needle 3 turns out, it did spit alot of fuel out, but the exhaust pointing downwards. helps contain it to my engine run mat
It did however suck a small plastic bag into the prop as you can see n the video...

Found the plane a few places:
http://www.rueckert-modellbau.de/ind...earman3346.htm
http://www.mbrshop24.de/product_info...oducts_id=2108
http://www.shmodelltechnik.de/start....ite_1960mm.php
Old 07-31-2007, 04:50 PM
  #804  
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Default RE: Everything Radial Engines

It did however suck a small plastic bag into the prop as you can see n the video...
I kept telling me "no it's not possible" [&:]
Old 07-31-2007, 05:47 PM
  #805  
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Default RE: Everything Radial Engines

What size is the propeller on there?
Old 07-31-2007, 06:06 PM
  #806  
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Default RE: Everything Radial Engines

20/8........ is what I has lying around.
I might get a 20/10, but lets see how it goes.

What did you use ?

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Old 07-31-2007, 07:14 PM
  #807  
dwr
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Default RE: Everything Radial Engines

SNJ, I use a 20/10 on my OS radial and get about 6900 rpm. With the 400
you might get to a 22/10??? DWR.
Old 08-01-2007, 12:20 AM
  #808  
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Default RE: Everything Radial Engines

In my videos, that is an 18x10 Master Airscrew prop.
Old 08-01-2007, 03:27 AM
  #809  
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Default RE: Everything Radial Engines

SNJ, I use a 20/10 on my OS radial and get about 6900 rpm. With the 400
you might get to a 22/10??? DWR.


Maybe.....lets see how it does.

Here are the manufacturer numbers:

ASP FS400AR

Propeller Rpm
18 x 10 8200-8400
18 x 12 7200-7400
18 x 14 6800-7000
20 x 8 7900-8100
20 x 10 7000-7200
22 x 8 6900-7100
Old 08-01-2007, 03:16 PM
  #810  
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Default RE: Everything Radial Engines

Aeroworks has discontinued producing the Stearman. I was able to get one when another fellow canceled his order.


Jeff
Old 08-01-2007, 06:03 PM
  #811  
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Default RE: Everything Radial Engines

Wolflord; here are some pictures of my corsair with the 90 r3 engine
Old 08-01-2007, 06:15 PM
  #812  
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Default RE: Everything Radial Engines

And here is a closer one
Old 08-01-2007, 06:42 PM
  #813  
markalign
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Default RE: Everything Radial Engines

Hi, what kit is this corsair from or is it an ARF.
Old 08-01-2007, 10:07 PM
  #814  
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Default RE: Everything Radial Engines

Nils, I like how you made the exhaust tubing. Have any video of the engine running?
Old 08-02-2007, 12:26 PM
  #815  
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It is a 1/8 sport scale arf from jamara 60 size ,the flaps are not original ,i made them after i found that i needed them to land it on my short field. It also looks much better with flaps!
As you can see the Corsair has been through the war hehe , i have flown it alot ,and in the start some of the landings was kinda hard .

I have 3 videos on youtube ; http://youtube.com/watch?v=yWFMerG0r70 ,the sound quality is not good ,and does`nt reproduce the sound very good

Now my asp 400 is on the way in mail , 720 euro delivered. Hopefully i dont need to pay tax, lets hope! I am thinking of the RTC Aeromaster for it ,but i will modify it slightly before covering it in black and silver. I would make the stabilizers rounder ,and move the cockpit to the rear ,and make a new cowling ... just thoughts... but i think the aeromaster has potential to look much better with some modifications.
Old 08-02-2007, 02:04 PM
  #816  
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Default RE: Everything Radial Engines

Sounds pretty good! [sm=thumbup.gif]
Old 08-03-2007, 12:00 AM
  #817  
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Default RE: Everything Radial Engines

Nils looks good, awsome job. Thanks for the pics
Old 08-05-2007, 08:25 AM
  #818  
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Default RE: Everything Radial Engines

Hi Guys,

It is with some sadness that I report my beloved Saito 170R3 suffered a catastrophic internal failure on Saturday. I managed to dead stick my Stearman down okay but the engine doesn't look good.

It appears that one of the slave con rods may have let go and in turn teh mecvhanical lockup at RPM broke the remaining two rods. Too early to tell but my thoughts are a fracture perhaps from an oil drilling.

[]

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Old 08-05-2007, 08:42 AM
  #819  
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ORIGINAL: Thunderchild

Hi Guys,

It is with some sadness that I report my beloved Saito 170R3 suffered a catastrophic internal failure on Saturday. I managed to dead stick my Stearman down okay but the engine doesn't look good.

It appears that one of the slave con rods may have let go and in turn teh mecvhanical lockup at RPM broke the remaining two rods. Too early to tell but my thoughts are a fracture perhaps from an oil drilling.

[]

I am very sorry to hear you lost your engine and too the Stearman. What stearman was it? Aeroworks? Flair?

Did you notice any stange noise or running habits from the 170?

Old 08-05-2007, 08:54 AM
  #820  
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Default RE: Everything Radial Engines

OOOOUCH Thunderchild. That sight hurts even my eyes. Sure hope that it didn't hurt the valves and other things in there. I been trying to fig out how to get my 170 back together that I tore down yesterday. Ha. Ha. Let us know what else you find and hope that you come out ok. Meanwhile I'l go back and try to Fig out my timing!!

Roy AKA Hooker53
Old 08-05-2007, 09:02 AM
  #821  
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Default RE: Everything Radial Engines

Ouch, that does not look good. [:@]
Old 08-05-2007, 10:29 AM
  #822  
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Default RE: Everything Radial Engines

Was the engine old and much used ,or did it run too lean or with a fuel with low oil percent? Did `nt thought things like that could happen to quality saito engines....
Old 08-05-2007, 07:42 PM
  #823  
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Default RE: Everything Radial Engines


ORIGINAL: chasrb


ORIGINAL: Thunderchild

Hi Guys,

It is with some sadness that I report my beloved Saito 170R3 suffered a catastrophic internal failure on Saturday. I managed to dead stick my Stearman down okay but the engine doesn't look good.

It appears that one of the slave con rods may have let go and in turn teh mecvhanical lockup at RPM broke the remaining two rods. Too early to tell but my thoughts are a fracture perhaps from an oil drilling.

[]

I am very sorry to hear you lost your engine and too the Stearman. What stearman was it? Aeroworks? Flair?

Did you notice any stange noise or running habits from the 170?

Hello Chasman and thank you for your condolences. The engine was in a Great Planes Super Stearman and no, no warning at all prior to the bang.

It was running beautifully and had about six hours total flight time on it. I suspect that there may have been a crack emanating from an oil drilling as one of the fragments recovered is half of the big end of one connecting rod. This half has separated through the drilling. Although quite young in air time, the engine sat around for twelve months in its box prior to me getting airborne so I guess warranty is out of the question. I shall be sending my photos to Saito along with a quiet word on what I suspect happened.

Thankfully the Stearman dead sticked down okay. I am now trying to get a parts list together to see if it is worth economical repair. My problem is to find a clear diagram of the engine in exploded view format so I can identify which parts I need. The diagram in my manual is crap.

Anyone out there can assist me I would rally appreciate it.

Safe Flying guys.
Old 08-05-2007, 07:53 PM
  #824  
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Default RE: Everything Radial Engines


ORIGINAL: nilsreinert123

Was the engine old and much used ,or did it run too lean or with a fuel with low oil percent? Did `nt thought things like that could happen to quality saito engines....
Hi Nils,

As I was telling Chasman, the engine was quite young and running like a gem. It has never given any trouble. It has always been run from new on 10% Angus nitro, and 15% Coolpower/5% Castor oil in Coogee Methanol. Never had any Chinese nitro (not that I've heard anything bad about this product) near it. It was always run dry after each days flying and then pumped with after run oil as soon as I got it home.

I always run my engines slight rich as I read sometime ago that Saito Radials like it this way. It appeared to be the case as it ran like a sewing machine with just the best exhaust note through my Keleo ring exhaust.

So the short answer is NO, it did not run lean or with too little lubrication. Actually if you look at the other shots I've taken (happy to post if anyone wants a look), apart from the obvious destruction, the engine internals are in beautiful corrosion free condition with no evidence of siezure or other oil deprivation evidence.

As much as I love Saito's and I hate to say it, all I can put it down to is a manufacturing defect and it was only a matter of time before the engine turned into a grenade.

Old 08-05-2007, 07:58 PM
  #825  
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Default RE: Everything Radial Engines

I don't like to hear that about the 170's since I have two I am putting into a KMP F7F Tigercat...

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