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Posted by dmrcflyr2 | May 04, 2014 @ 10:51 AM | 1,530 Views
I found a deal I couldn't pass up on an OS FS-30 4-stroke. I am going to put it in the Waco ARF that I had originally planned for the Magnum 30. Seeing as the Magnum is not a hand starting engine, I am selling it.

This OS is used and in very good condition. I did my normal disassembly, inspection, and cleaning prior to running it. Internally it looked very good; sorry no pictures. I did not re-set the valves; I figured I would just run it as is and adjust them if necessary. NOT necessary! This little engine started on the first flip! Thats my kind of engine. It has the exact same mounting dimensions as the Magnum so no mods will be necessary in mounting to the Waco, when I get back to it.

Quite honestly the Magnum was the reason finishing up the Waco has not been a priority.
Posted by dmrcflyr2 | Mar 29, 2014 @ 12:23 PM | 2,129 Views
I ran and continued the break-in of some engines today.

First was The Little Gem, Magnum FS-30. This little engine continues to impress me. As I mentioned in an earlier post, as the compression increases the difficulty in starting decreases. It took a whopping 6 flips to get it running today. Of course the key to hand starting a four stroke engine is properly priming it. Not all engines prime quite the same.

I always start with the tried and true full throttle, cover the carb opening, and turn the prop over until fuel comes out of the carb. Close the throttle and turn the prop over a few more times. Although this engine draws fuel in easily using this method getting it into the intake is another matter. This engine needs a bit of fuel shot into the head through the glow plug hole. Once that is done it fires right up. I am running a 10x6 APC on this engine and it posted 8300RPM at WOT and ticked over nicely at 3100 PRM at idle. I did begin to adjust the low speed needle; I closed it about 1/4 turn. Transition is from idle to full throttle is nice as long as I don't really advance it too fast. I deem this engine ready for mounting into the Waco 30 it came with.

Saito 80 GK
This engine is on about the 4th tank. I inadvertently installed the MA 14x6 on it today instead of the 13x6; I did not notice this until after the run. As mentioned above about priming, this engine does NOT suck fuel up into the carb very well using my normal method. I have seen this...Continue Reading
Posted by dmrcflyr2 | Mar 24, 2014 @ 06:57 PM | 1,931 Views
Finally I scored a NIB OS FS-90! The previous 2 were not pristine like this. The first, which I no longer have, was well used. The second had a low but undetermined amount of time on it. This one looks just like it did 30 years ago from the factory. Granted it has a bit of dust and 30 years of exposure. According to the fellow I bought it from, it was purchased many years ago and installed into a P6E and hung from a ceiling all these years. When the original owner passed his widow gave this engine to the fellow I bought it from.

I intend to break this engine in according to the instructions and then find a suitable plane to call it home in. My second is currently up for sale on RCU but I am seriously considering pulling it back and keeping it. As it is a low time engine I would have an excellent source of spare parts just in case. Parts for these are quite difficult to get, however finding entire engines does not seem to be as hard seeing as I have purchased 3 in the last 2 years.
Posted by dmrcflyr2 | Mar 23, 2014 @ 03:29 PM | 1,512 Views
Well I have 3 hard earned tanks of fuel through this little engine. The break-in is going well and the compression is starting to increase, as felt by my hand. This has by far been the most difficult engine to get started that I have ever owned. I don't own and don't believe in electric starters, so this is my burden to bear. I am sure that had I used an electric starter I would not have had the issues getting it running. But as the compression comes up it gets easier to start each time. In fact the last run of the day took and amazing low 10 flips to get it running.

I may have also been hampered by my glow plug selection. The middle plug is the one I had been using and got one tank run on. I just took it out of my plug box and I am not sure the make. I cannot see any print on it. I thought I had a few OS 'F' plugs but they must all be in my other engines. The plug on the left is a new Hangar 9 2 cycle Super Plug. I used this on the 2 tanks of fuel today. Perhaps it's longer reach aided in starting. The instructions for the engine just state a 'hot' style plug designed for 4 stroke engines. Eventually I will get another OS 'F' or a Fox Miracle plug. For now the Hangar 9 will stay in it. The plug on the right, IDK, I was using it just to make sure my ignitor was still good after the darn thing wouldn't start on the hundreds of flips required to get it running.

On the last tank I had it running up to 8000 RPM and it would hold a low speed of 3500 RPM without having even begun to adjust the low speed screw. I think I can safely set it for about 9000 RPM for flight with the 10x6 APC.

Posted by dmrcflyr2 | Mar 22, 2014 @ 07:54 AM | 2,196 Views
I just picked up a new little 4 stroke engine, a Magnum FS-30. I got this in a package deal from a member here. I also got the long since discontinued Sportsman Aviation Waco 30 biplane. More on that in a nother post though.

There is a certain member on this forum that really despise this little gem. I will find out soon enough if this hatred is justified. The box is very attrative and the paper contents are just as impressive. A very comprehensive set of paperwork comes with it along with a single allen key and muffler assembly. This engine is NIB and has never seen a drop of fuel. I will be evaluating it for ease of starting and overall handling. Check out the price listed on the box. I am unsure how old this engine really is but I paid nowhere near the price on the box for this engine. RC Forums are great places to buy engines!

I will be starting the break-in process this weekend and when the mini servos arrive early next week, I will start the Waco/Magnum project.

Well it took some time but I got it started and running. I knew it would be a bit difficult being a ringed engine and the compression being low intially. I compounded the problem by not having my glow ignitors fully charged. I think the first 30 minutes I spent trying to get it running for the first time was due to them. Once they were charged up and really making the plug glow, a few shots of fuel into the chamber and about 5 good flips and it was running.

A quiet little thing. I ran about 8 oz of fuel through it and I am letting it cool now before another run. As per the instructions I left the ignitor on for the first minute, then I removed it and leaned it just enough to keep it running rough at half throttle. I would put the ignitor on periodically just to hear the increase in RPM and keep it going.

I am running a 10x6 and Omega 10% fuel through it.
Posted by dmrcflyr2 | Mar 16, 2014 @ 12:58 PM | 1,759 Views
At one time I had 2 of the engines I have since sold the one that came with the box and tools. It looked to be the one with the most run time. So down to this one that I detailed disassembly and cleaning of below from Dec 2013.

I put it on the test stand yesterday for a run and I took some videos. I did not get it primed well enough when I first started it; it took longer than normal to get going. Apparently the last time I had it on the bench I had it set pretty darn rich as it died immediately when I took off the glow ignitor. I don't know if I thought it looked so noew it needed to be broken in or what, but I leaned it out to my normal 8500-8800 RPM with the MA 14x6.

Such as this damn addiction is, I also just made an offer on a NIB FS-90 from RCU. I will detail that engine when it arrives. Seeing as I am not really building planes from kits anymore, especially larger kits, I am not sure if I really need 2 of these engines again. But since I like to have the newest most pristine engines as possible, this one might find it's way to the classifieds along with the TF Red Box P-39 I bought for this engine.

Here is a link to the 3 videos of the one tank I ran through it.

Posted by dmrcflyr2 | Mar 08, 2014 @ 03:40 PM | 1,835 Views
I have put 4 tanks of fuel through the 80GK as of this writing and the break-in process is nearing completion. The rest really needs to take place on an airplane BUT I don't have one for either of the mid sized Saito's I have.

I took the chance to run all three engines today just as a general comparison of starting and operating characteristics. I hand start EVERY engine I own 2 and 4 stroke. So obviously one of my evaluation points is how easily an engine I own starts.

Of the 3 Saito's my favorites from a overall operating characteristics to include cold/warm starting, throttle transition, and idle, are in order 65, 91, 80.

The 65 is just a sweetheart in every way. It takes the least prime, it is the easiest to start, nicest idle and excellent transition. This engine has at most 7-8 tanks of fuel through it. It averages 2 flips to start.

The 91 is a VERY close second. When this engine was purchased it was well used; so it is fully broken in. This engine might take 3-4 flips to start.

The 80 is a real BITCH of an engine. It takes the most effort to prime it; in fact both times from cold it needed fuel shot into the glow plug hole before it would fire up. The compression ratio is so high it kicks back and literally tore my leather glove up just getting it started. Granted it is not broken in but it really pours out the exhaust smoke. I have it set at about 3 full turns open. When I started to try to lean it a bit it detonated and threw the prop. Obviously,...Continue Reading
Posted by dmrcflyr2 | Mar 02, 2014 @ 02:58 PM | 1,987 Views
I fired up the 80GK I recieved last week as detailed below. Since I am never parting with this engine I figured I would begin the break-in processe. I have run 2 full tanks of Morgan's Omega 15% through it today. I used a MA 13x6 for the prop. Ordinarily I would run 10% but I needed to finish up this gallon that I purchased when 10% was not available.

I also used the header and muffler from the 91 I have instead of the one that came with the engine. I think I will purchase a new steel header, as the one that cames with this engine was AL. I am not sure how long Saito provided AL headers, but this is the first one I have ever seen and I have owned over 15 different Saito engines.

I set the needle valve to 2 full turns open from fully closed and ran the first half of the tank at 4000 RPM by adjusting the throttle. I shut it down after half a tank and let her cool down before the next run.

The videos are from the second tank. Initially it needed a few drops of fuel injected into the glow plug hole; it fired up immediately then.

Holy cow! I brought the engine in to cool and just now went back to touch it. Man it has a very high compression ratio! A 1993 vintage might be the original compression ratio of 15.5:1 as listed here http://sceptreflight.net/Model%20Eng...to%20FA-80.pdf
It is quite stout. What a beauty!

Posted by dmrcflyr2 | Feb 23, 2014 @ 01:48 PM | 1,763 Views
Here are some pictures of my current Saito engines. I have bought and sold several engines in the last 6-8 months. Even this line up could be changing soon.

The pictures are of my FA-45S, FA-65, FA-80, and FA-91. I also have an FA-56 but it is mounted in my SIG Citabria.

In a previous post about my FA-45S I said I did not know when I bought this engine or how long I have had it. Well, now I know. I was looking through my market ratings on RCUniverse and see that I bought the 45S April 23 2006. I thought I had owned it longer than that. It was NIB when I bought it but no idea what I paid then.

I just acquired another Saito 80. It was in transit as I wrote this entry. It is a NIB Saito FA-80GK. It is PRISTINE in every way! In fact the person I bought it from on RCU tolde me a bit about the engine. He red it from a gentleman who had recently passed away. This original owner bought it in 1993 and NEVER even opened the box. I guess this gent would do that, buy engines for the heck of it and put them on a shelf. Anyway I was the first person to remove all of the contents from the box for the first time. Everything under the inner card board was still firmly taped in place from the manufacturer. It was a promotional engine at the time as it included several items not normally included. A Saito patch, velocity stack and additional glow plug along with the one installed in the engine. It is a GEM that I will never part with.

This is why I alluded to...Continue Reading
Posted by dmrcflyr2 | Dec 29, 2013 @ 12:08 PM | 2,106 Views
I was bored today and decided to open up a couple of engines for an internal inspection. First off was my ASP FS 61 which has about 1 hour of run time on in, bench and flight time. By looking at the inside I would have been hard pressed to believe I have run it that much. Note how much larger the intake valve is compared to the exhaust valve.

The other engine I opened up was my trusty Saito FA-45S. I have had this engine for a number of years, >10, but I don't know how much total runtime it has. Again, by looking at the internals it doesn't seem like much. See how the intake and exhaust valves are the same size in this engine?
Posted by dmrcflyr2 | Dec 14, 2013 @ 01:02 PM | 2,270 Views
I now have (2) os FS-90 4 stroke engines. I just recently purchased my second one from a member here for a very good price, well under $100. It is just the engine, no box, paperwork or tools.

When it arrived it would not even turn over. The seller did not think there had been much run time on the engine but let me know the condition. As I always do with used engine purchases, I completely disassembled it. It had been run but by the looks of it not more than a few tanks. It was gummed up from the fuel/oil residue hardening inside.

I cleaned it up and very thoroughly and had it on the bench today. Just as my other FS-90 it started on the first flip. Soon it was turning a 14x6 at 8500 RPM. It would turn it more than that but this is usually where I set my 4 strokes while on the bench.

Now I have 2 very nice running FS-90's and no planes for them....Continue Reading
Posted by dmrcflyr2 | Oct 16, 2013 @ 06:53 PM | 3,250 Views
I just recieved my ASP .61 from Hobby King (USA Warehouse). It is a beautiful engine. I will begin the break-in process this weekend with an 11x6 prop.

I I just ran 3 tanks of fuel through this engine, I also shot video of some of the runs including the first time it was started. I ran 10% Omega with a Hangar 9 glow plug.

Many people seem to have questionable regard for the ASP brand of engines. Some comes from what people say, some comes from peoples experiences and this includes lack of experience as well. But in my experience with ASP engines which dates back to 1991 when I bought my first 46, I have had great experience with this line of engines. Since 1991 I have owned 5 different ASP engines and all have performed very well. The only failure I ever had on one was with my first 46 and that was due to my lack of experience. I had it set too lean and lost the rear bearing. I have had (2) ASP 46's, (1) 52, (1) 61 4-stroke, and this 61. Needless to say I do not hesitate to buy ASP engines. The price is great and the quality is fine enough for me.

Here is a link to the first time this engine saw fuel today. As you can see I hand started this engine. In fact, I hand start every engine I own. I do not believe in electric starters especially since all of my engines are tuned properly and start easily by hand.

There are other videos of the first tanks in this folder as well. I just hope that anyone...Continue Reading
Posted by dmrcflyr2 | Jul 26, 2013 @ 02:14 PM | 2,785 Views
I scored a NEW Saito 65 from craigslist unexpectedly. The story is I have been watching this ad for a Saito 65 for about 3 months. When it would expire the gent would repost with a dollar or two off the price. The ad stated the following:

I have a Used SAITO FA-65 .65 FOUR 4 STROKE RC ENGINE with PROPELLER and NOSE CONE. This engine had been well taken care of and very little use on it.

It always had the same 2 pictures and from them it looked to be in good condition. I finally emailed him and asked what his bottom dollar was. It was located about 2 hours drive north of me and I really did not want to drive that far just for an engine. So his answer back was $110 shipped. I can't remember what it was originally listed for but the last price in the ad was $127. The same fellow had a few other RC odds and ends that were nothing special.

So I took a chance and sent him a check, that was his preferred method of payment. Additionally, this engine was just engine no tools or box; he offered a prop and spinner but I declined on those items.

When the engine arrived as I usually do with used engines, I opened up the back cover, remove the muffler and do a general inspection of its condition.

Aside from a bit of dust, it looked pristine. It did not have the smell of oil or fuel, in fact it smelled like they do right out of the box. After removing the back cover my suspicions were confirmed. This engine has NEVER seen a drop of fuel. Here are a few pictures of it.

I can see that the glow plug is the standard one shipped with Saitos and even it has never seen combustion. All in all I think I scored a pretty darn good deal here. I just had to share.

I have run about 5 tanks of fuel through this engine and it is one of the finest Saito's I have ever had. It starts on the first flip and transitions instantaneously from idle to WOT. All in all it is definitely a keeper.
Posted by dmrcflyr2 | Jun 23, 2013 @ 06:16 PM | 2,546 Views
Some but not all.
Posted by dmrcflyr2 | Jun 22, 2013 @ 05:30 AM | 2,553 Views
Needing to round out my 4 stroke collection I have been wanting another Enya. I decided to post a wanted ad for an Enya 53 4C. Quite quickly I received several responses. As it turns out I was able to obtain 2 from great members here! The first one was a lightly used 46 I got from gypsy56. The second was a NIB 60 4C obtained in a straight trade from richardc951. Thanks to both of you guys! Although I didn't score a 53, I am just as happy with the 2 I did get. Both will be hitting the test stand today.

The 46 will probably replace the Irvine 40 that is currently in my Tower Uproar 40. I am not sure what the 60 will go in at this time but I do have an unbuilt SIG Astro Hog that could become its home. here are a few pics of the engines. It was a wonderful Friday yesterday as both engines arrived that day.
Posted by dmrcflyr2 | May 05, 2013 @ 12:29 PM | 3,775 Views
Here is my current list of 4-stroke engines.

1. Saito FA-45S. I cannot recall when or where I bought this engine and that really bothers me. It is a fantastic running engine. Last night I tore it down for an inspection. I went as far as taking the carb off, rear back plate, rocker arms and pushrods, and pulling the head completely off the crankcase. I also pulled the piston out of the cylinder head. The top of the piston had a small amount of combustion residue on it, but it easily wiped off and then looked just like new. The rest of the internals looked fantastic as well. The valves were dark but there was no buildup or residue on them. I reassembled then checked the valve clearances, which did need to be adjusted. I then ran the engine today. It runs beautifully.

2. ASP 61. What a surprising engine for the money. I bought it new from Hobby King USA Warehouse for $124 and what a deal. This engine runs outstanding! It had about 7 tanks of fuel through it, 3 on the bench and 4 in the air on a GP Escapade. I did not check the valves before I ran it, but I did check them this morning and they really did need adjustment. Both were well outside the .10mm outside tolerance. I am seriously considering this for the SIG Citabria I am building.

3. Saito 65. I picked this up from a Craigslist ad locally here. The ad stated lightly used, but after receipt and inspection, this engine had never seen a drop of fuel. This engine is currently sitting in my SIG Somethin...Continue Reading
Posted by dmrcflyr2 | May 05, 2013 @ 12:11 PM | 3,554 Views
I am currently building a SIG Citabria and I am considering my options for which of 3 different 4-stroke engines to use. The choices are:

1. A fully broken in Saito 45S. This is the engine shown on the plans for the Citabria, however I cannot find any videos of this specific combination.

2. A fairly new, 8 tanks run through, ASP 61. This is a surprisingly good running engine and it is the quietest of the 3.

3. A new, 4 tanks of fuel, 1983 vintage OS FS 61. This is the largest engine physically and the heaviest.

I ran all 3 engines today on the test stand and all ran very well. The valves on the Saito and ASP were checked and adjusted today. The OS did not need adjustment. My heart is telling me to go with the Saito for several reasons. It is the engine shown on the plans and thus SIG must have flown this combination. It is fully broken in and my favorite appearance wise. The ASP is a stronger engine and is the same physical size and weight of the Saito. The OS FS 61 is now last on the list. It is the largest and heaviest of the 3.

Now some pictures.

I have eliminated the OS and the ASP from being installed in this plane. Since my last entry here I have acquired a Saito 50 and 56. All three, 45S, 50, 56 share the same outer case dimensions making them drop in's. But as of today I sold the 50. After some consideration I figured the 45S is probably equivalent to the 50 and thus the 50 lost out. I am in the process of acquiring Enya 4 stroke engines. I now have a 60 and a 46. In a few days I will be receiving the second 46-4C. I've been searching for a lightly used or NIB 53 but have not been able to close any deals on one as yet.