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Old 09-18-2020, 07:35 AM
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I found I have a can of Lusterkote cub yellow
Old 09-18-2020, 10:56 AM
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Originally Posted by FlyerInOKC
Dick Katz 84" wingspan version (available from Ziroli plans now) and Jim Pepino's Mammoth Scale Plans 112" wingspan version (available thru Bob Holman now) are the versions of this aircraft I know about. My airplane is a modified version of the Dick Katz design but I own a copy of both. Bob Holman knew I guy offering cowling and pants for the mammoth scale version but I didn't purchase them leaning toward the Katz size. Russell Williams out of Redmond WA owns the full size airplane, he told me it floats pretty bad and doesn't want to land without the airbrake deployed. I have enough laser cut parts to build the SC-W and the SC-M prototype. My obsession with the airplane started with the first kit I built at 10 years old.
Mike, I like that plane, you should build 2, build on with an open cockpit, move the seat back a bit. LOL let me flying it LOL

I love those open cockpit planes, I saw a photo of a P-37 with an open cockpit, it was a racer. but I have not been able to find the photo.

Jim

Last edited by the Wasp; 09-18-2020 at 05:46 PM. Reason: the cat told me to add the "u"
Old 09-18-2020, 11:27 AM
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Got the engine and it is a perfect fit! Sure is a purdy thing too. Didn't know it but it comes with a wiring harness for the GP too, was considering trying to make my own, but don't need to now. Fits inside the cowl perfectly, so all I need to do then is make the fake engine fit it for decent baffling. Weight with the pipes and harness 2 pound 1.05 ounces, DLE/XYZ20 2 pound 2.65 ounces, so slightly lighter too and that does not include the ignition battery it would need. I can add a battery for on board glow and still be under the DLE/XYZ20 weight.






What is that nipple by the intake for?

Old 09-18-2020, 12:27 PM
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Originally Posted by the Wasp
Mike, I like that plane, you should build 2, build on with an open cockpit, move the seat back a bit. LOL let me flying it LOL

I love those open cockpit planes, I saw a photo of a P-37 with an open cockpit, it was a racer. but I have not been able to find the photo.

Jim
Jim, you are confusing the Ryan SC (Sports Cabin) with the Ryan ST (Sports Trainer) open cockpit trainer (I have been on the lookout for a vintage SIG kit I can afford). The difference between the 1937 Ryan SC-M prototype and the 1938 Ryan SC-W production model was the engine. The SC-M had a Menasco inline engine. During flight test after the CAA certification it was discovered the Menasco engine had reliability issues so the airplane was modified. The single prototype aircraft (Now on display at the EAA museum in Oshkosh) was converted to use a more reliable Warner Scarab engine in the 145 HP or 165 HP versions. I believe a small change was also made where the wing meets the fuselage. I don't have any documentation on this just a few low grade old photos to support my opinion. This required Ryan to get the new airplane certified again. There were only 15 airplanes built in total, the last being assembled from spare parts in 1950s. Ryan was requested to inspect the airplane and they awarded the builder a factory serial number plate. I know entirety too much about this airplane. The unsold original factory models starred in the movie Wake Island (1942) as Japanese dive bombers. At least on was used for Shore Patrol during WWII on the west coast.
Old 09-18-2020, 12:50 PM
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That's a pretty engine Acdii, congrats on getting it at such a discount.

Which Corsair is that mounted to?
Old 09-18-2020, 01:05 PM
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I can't wait to see how the radial looks in the Corsair!
Old 09-18-2020, 02:44 PM
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Going into a Top Flite .60 Corsair. The original mounts almost work, going to have to reposition them to center the engine, sits a little high but centered side to side. Plane has some hanger rash I need to fix, especially after getting knocked over and landing on the tail cone.





I have to clean it up well, some moisture dripped on one wing panel, probably from the AC duct it was under and touch up a few places, then give it a sanding and clear coat with Auto clear. Then I can fit everything, the only thing that I need to work on still is the cowl to get flaps opened up on it. I have a cockpit kit and dummy radial for it as well. Just need a pilot to complete it. I have Century Jet retracts installed too. Yes I know the axles were facing the wrong way, that is how they shipped.

Old 09-18-2020, 04:04 PM
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The nips by the intake is for priming
Old 09-18-2020, 04:43 PM
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Originally Posted by Captcrunch44
The nips by the intake is for priming
So I discovered RTFM. Interesting how the dimensions have top to bottom distance split by engine CL, but not side to side. Must mean it is dead center side to side. Trickiest part of the install will be the exhaust tubes, where I want them to exit and where they are wanting to exit are two different places. I will see if I can route one to one side and two to the other so they exit the scale locations. Before that though I need to clean and paint the fuse and wings with clear and get the engine on the test stand. I also need to shim the 3 blade prop, it was reamed for the 100 which is 8MM and the 120R3 is 7 mm.
Old 09-18-2020, 04:56 PM
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Originally Posted by acdii
I found I have a can of Lusterkote cub yellow

I sure wish they still made that stuff.

Great looking Corsair you have in the works. Let me know when you plan to maiden. It would be worth the ride to see that.

Nice shop too
Old 09-18-2020, 06:18 PM
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That engine looks like it was made for the Corsair!
Old 09-18-2020, 06:40 PM
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Thanks. Hoping it will be ready by spring. I haven't had much time to work on them, took me weeks just to finish the Chipmunk and it only needs a couple hours work.
Old 09-18-2020, 07:06 PM
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Should be a lot of great flying when they are done.
That Chippy is an especially sweet flying machine.
Old 09-18-2020, 07:17 PM
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Hoping to find out Sunday, supposed to be good flying weather.
Old 09-19-2020, 05:46 AM
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Default Boca Bearing Failures

The flying weather is on again around here, my favorite time of the year to fly. I have lots of planes ready to go too.

Engines are a different story. I'm not sure what's going on with Boca lately but I've had 4 bearings fail in the last 3 months or so. Seems I get less than a gallon of fuel run through a newly overhauled engine and they start rattling due to rear bearing failure. As always Boca has no problem sending me free replacements but I'm getting a bit tired of tearing down otherwise perfectly good running engines.

Upon teardown of those 4 engines I have checked everything. Cranks are straight, bores are fine and bearings fit the cranks just fine. There's plenty of oil in the cases for proper lubrication and my props are always balanced perfect. Whatever!

The most recent rear bearing failure (#4) was yesterday on a 70 Surpass with less than 1/4 gl of fuel run through it. It had been running great, 10150 peak spinning an apc 12x8. I was really looking forward to flying the WM P51 40 this weekend, ain't gonna happen.

I'm hoping you all won't have my bad luck.

Last edited by Glowgeek; 09-19-2020 at 06:13 AM.
Old 09-19-2020, 07:53 AM
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Maybe its the type of bearing you are using, have you tried switching to something different that they offer?
Old 09-19-2020, 08:10 AM
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I just use the econo hard chrome ones for 4 strokes. No need for high performance, stainless or ceramic bearings. Maybe covid knocked out the entire quality dept at the china bearing co, assuming there was one to begin with.

I'm not sure what's actually causing the bearing clearances to open up so far.
Old 09-19-2020, 08:16 AM
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Chinese steel. Thats all you need to know.
Old 09-19-2020, 08:23 AM
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I think all the cheap hard chrome and stainless bearings come from China.

Last edited by Glowgeek; 09-19-2020 at 08:26 AM.
Old 09-19-2020, 08:55 AM
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Hmmmmm
Old 09-19-2020, 09:35 AM
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Originally Posted by Jesse Open
Hmmmmm
Yeah, I know what that means. Since switching from RC to Boca last year I was having good luck though. All except the one engine the rest ran great all last season and this season too. Something has definitely changed recently.

I hate the thought of paying double or more for bearings. NSK has had manufacturing sites in china since 1995 and other name brand bearing manufacturers have gone that route as well. I'm not a bearing expert and don't want to become one just to select bearings that live up to their life expectancy. Aaaaarg!

This kind of stuff is in your wheelhouse Gary. Can you recommend an affordable quality hard chrome bearing manufacturer?
Old 09-19-2020, 03:49 PM
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Ok, a few hours of research tells me ALL BEARING MANUFACTURERES HAVE FACTORIES IN CHINA! So there you go.

Looks like the best we can do is pick a manufacturer that has a history of producing high quality bearings eg Nachi, Fag, SKF, Fafnir etc and hope that we receive authentic bearings made to their spec IN CHINA, instead of a counterfeit MADE IN CHINA.

Apparently china is capable of making fine precision bearings to very tight tolerances when required to by the buyer. Obviously RC and Boca just don't require that kind of precision and don't think we need it for our model engines. No, we don't need the most precise bearings in the world but we don't need junk either. I think junk is what I have been buying from both distributors for a while now.

Rant over and I'm PO'd about this whole bearing thing. Sad, very sad.

Last edited by Glowgeek; 09-19-2020 at 04:14 PM.
Old 09-19-2020, 06:24 PM
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Lonnie I'm telling you, back a few years I rebuilt both my OS 50 Hyper Heli engines, in one I bought the standard NTN rear bearing, the other a NSK rear bearing, I tell you the NSK felt smother in the hand, yes Sir,

Jim
Old 09-19-2020, 09:15 PM
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Ok riddle me this my fine fellow Saito Freaks. How did Saito bench mark the 120R3 using an APC 14 x 6 prop when the prop hole diameter is 8mm and the engines prop shaft is 7mm? Got the engine mounted to the test stand, had to drill and tap a few holes to make it work, went to put the brand new prop on only to find it is much larger than the shaft. Guess I will use a Xoar 13 x 8 for break in instead. Will have to dig through my scraps and see if the aluminum tube I have is 7mm or less and make a bushing if it is.
Old 09-20-2020, 01:53 AM
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Someone here was talking about menasco engines, were they a copy of DH gypsy/major etc inline four engines, the mechanical answer to lucas electrics?

ps CRS downunder means craft.

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