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Posted by dmrcflyr2 | Apr 24, 2016 @ 02:56 PM | 1,233 Views
I bought my first Tower Pro 46 back around 2000ish, but I had several of the sister engines, the GMS 47, prior to that. Now of late I have been selling off all non-Japanese made engines. I am primarily interested in Saito, Enya, and OS engines for their quality, reliability, and performance. But when I saw this new never run engine on eBay for $26 I knew I had to have it. That was the best $26 I have spent in a long while.

Granted it is not a Japanese made engine but having owned several before I do know they are powerful and fairly reliable. Now this one gave me a bit of trouble initially today. I could start it and it would run for about 6 seconds then die. As it turns out the low speed needle was set too lean either at the factory or by the previous owner. I am certain the engine had never been run before due to the look of the inside and smell of the engine.

Once I got the low speed needle ironed out tuning was fairly easy. Now it hand starts easily and runs quite well. I only put two tanks through it today but I would feel comfortable putting it in my Kaos as it is.

Tower Pro 46 First runs (9 min 37 sec)

Posted by dmrcflyr2 | Apr 16, 2016 @ 05:24 PM | 1,065 Views
I mounted this engine to the test stand today and began shooting the video. It was shortly after the first run attempt that I relearned something about glow engines and glow plugs.

About 2 months ago I bought several sleeves of Enya #3 glow plugs. Why would I do this? Because these plugs are some of the best you can get, and unfortunately no LHS stocks them anymore. So I have to order them and I run primarily 4 stroke engines. I have read many posts and reviews stating that these plugs are great in 2 stroke engines as well. Thus far I have had the same experience until the last two OS engines.

I have used the Enya plug with great success in a Webra Speed 61, an OS 40 FP, my OS 40 FSR, etc. But this 45 FSR and my 46 SF engines simply do not like these plugs for some reason.

Now back to the original story line, running this 45 FSR engine. The engine would not hold full throttle at any richness setting of the high speed needle, nor would it idle at all. After fooling around with carb settings and the engine running poorly, I finally decided to change glow plugs. Now the Enya #3 I installed was brand new too, so I was not initially questioning the plug for the poor running results. I pulled a plug from my Enya SS40BB 2 stroke engine and installed it into this engine. Suddenly the engine would hold full throttle settings and would actually idle without dying.

I believe the plug I used was a McCoy MC-59 as I had purchased some for the few 2 stroke...Continue Reading
Posted by dmrcflyr2 | Apr 13, 2016 @ 05:47 PM | 1,727 Views
I just scored a really nice seemingly low time OS 45 FSR. This engine was introduced to the market in 1978 as an increased bore of the 40 FSR. I could not find a review on this engine so I have little more factual information on it. My engine is the ABC version and I opened it up as soon as I got it for my normal inspection.

The compression was excellent and the looks of the crankshaft counter weight and rear bearing show NO rust or corrosion. The bearings still feel very smooth, but I have no idea if they are the originals. Nevertheless I will not be replacing them at this time.

The top of the piston also indicates a very low run time engine. The odd thing about the 45 FSR is that I seldom see them for sale or hear anything about them, I can only assume that since it is an OS engine from the late 70's that it is a very high quality mill. On to the pictures........Continue Reading
Posted by dmrcflyr2 | Apr 10, 2016 @ 08:35 AM | 1,313 Views
This post shows the first run after rebuilding this engine. It really is a sweet engine. It may not be a powerhouse by today's standards or even in 1981 when it was released, but it is a very good running engine. It started on the first flip. This engine did take some considerable prime to get started even on subsequent runs I have done today.

Unfortunately, the age and low power do not make this a very attractive engine to most folks in the glow market today. Everyone seems to value absolute power now over high quality. It is my belief that the quality of this engine is unmatched. In my mind, this is an example of the pinnacle of OS quality as are all of their engines from the 80's through mid 90's.

As such it will not be sold , plus it being a gift to me, it has a bit more meaning and value.

OS FS-40 First run after rebuild (6 min 46 sec)

OS FS-40 clips (2 min 31 sec)
...Continue Reading
Posted by dmrcflyr2 | Apr 09, 2016 @ 06:22 PM | 1,555 Views
That would be Kimchiyuk! So I have sold this member a few engines, bought a few from him, and we have corresponded several times. Well I was about to lay in my recliner and take a nap when I here the postal truck deliver the mail. I figure I better get that before I nod off. Out to the mail box I go and when I open it there is a small box! WTH? The engine I just bought from eBay could not be here yet.... What is this. I see the return address and wonder if I made a purchase I did not remember.

So I anxiously go into my room and open this package. I find a completely disassembled OS FS-40 four stroke engine! Wholly moley! I love engines, let alone totally disassembled ones! There was this note also....

In summary it stated that Dustin had been working on this engine but lost the desire to complete it. Knowing I am an avid engine lover, he sent it to me. The note went on to say and I quote, "Keep it, sell it....It's yours."

I quickly scanned the box and parts and it looked like everything was there. The caveat being the piston pin was still firmly attached to the piston. These can be quite tricky to remove. OS engines require the cylinder sleeve to be pulled out and then a hole in the casting is exposed allowing careful extraction of the piston pin. A task much easier said than done especially if the engine has sat for any time at all, or has not been run in a while.

Long story short, it took considerable oil, heat, a soak in LA's Totally...Continue Reading
Posted by dmrcflyr2 | Apr 06, 2016 @ 12:19 PM | 1,961 Views
Today's post is a blast from the past. I recently purchased a NIB OS 40 FSR ABC 2 stroke engine. This engine was introduced to the market in 1975 and had a production run through the early 80's. I am not entirely sure when this engine was discontinued but the SF series of engines replaced it. The 40/46 SF engine hit the market in 1987 so this engine was available up until that time at least.

The box artwork looks to be from the early 80's so I have a real classic here. Today I decided to shoot some videos of how I setup a 2 stroke engine for the first time running it. I have 4 total videos to include the first run and the third run where I begin to set the high speed needle, followed by setting the low speed needle for proper idle.

This post can also be viewed on my website along with many other instructional videos.

Initial setup
OS 40 FSR Setup for the first run (8 min 51 sec)

The first run
OS 40 FSR First run (7 min 37 sec)
...Continue Reading
Posted by dmrcflyr2 | Apr 06, 2016 @ 06:11 AM | 2,321 Views
Are you interested in glow engines? Do you have questions about operation, repair, or maintenance? Would you like someone to clean up and repair your engine for you?

Well I for one have not and will not succumb to the electric flight revolution. I am staying true to my roots in this hobby and sticking with glow power airplanes. I have a new website where the main focus is in glow engines. It is heavily video oriented because face it, most folks are visual learners.

I have a series of videos that address the most basic glow engine topics. These include bearing replacement, clean up, dis-assembly and re-assembly. I include both 2 and 4 stroke engines.

Plus for those interested in seeing a number of engines running, I have plenty of those too. So if you are into glow engines I think you will find something of interest at my site.

I am open to suggestions on content so if you need information on an issue with your engine please contact me.
Posted by dmrcflyr2 | Apr 02, 2016 @ 04:15 PM | 1,773 Views
For those of you who follow my blog post, please join me on my new webite.

I will be transferring much of the content of this page to my site over the next few weeks. Please stop in and check out my site. I'll be adding content as often as I can.
Posted by dmrcflyr2 | Mar 26, 2016 @ 05:28 PM | 2,189 Views
All this Saito 45 cam gear swap out stuff has me wanting to look at all 4 of the Saito 45's I have right now. I have 4 and that is the most I have ever had at one time.

From Left to right in all photos (If you do not click on view all images in thread you are missing half the pictures)
FA-45S(pecial), FA45, FA45 MK??, FA45 MKII

The FA-45S came out in the early 90's from what I gather from the box color, but it could have been 1989. It is an ABC with ring construction. it features a 'hotter'cam gear to make more power than the standard MKII. It has the most up to date carburetor and intake manifold. Basically it represents the most modern Saito out of the four.

The FA-45 is the iteration of the 45 Saito put out. It came out in 1982 and features a two piece head design, and AAC ringless construction. If you look closely at the photos you will see the head design, intake manifold and carb differences from the 45S.

The FA-45MK??. This engine I picked up recently and is a bit of a conundrum for me. It has the old style carb, but it was cut off, and it has a strange crankcase that simply has Saito and 45 lightly stamped on the case. It does not have the raised up section with the stamping on it. ***UPDATE***I was looking closely at this and the FA-45 and this share the same crankcase design. That must make this a VERY early 45, possibly from 1983-84.
(I figure this is a mid 80's version before they finalized the crankcase design. Or maybe they...Continue Reading
Posted by dmrcflyr2 | Mar 26, 2016 @ 11:25 AM | 1,426 Views
Well I have completed the first two steps in this experiment. The first pictures are of the completed engine in the stock form after reassembly. It sure is a nice looking engine!

I ran the engine in its stock form and peaked it out. You can see the RPM figures on the video, but I reached a peak of 9990 RPM. My battery in the camera died before that reading was shown.

I then swapped out for the 50 cam gear housing and other parts, and reset the valve lash. Without touching the needle valve from the last run the engine was already at peak. It hit 10440 RPM. That is a gain of 450 RPM. The idle and transition did not seem to be affected at all.

The parts required to make this swap out are as follows:

1. Cam gear housing for a Saito 50/56/45S
2. Cam gear for 50.
3. Cam followers for 50/56
4. Push rods for 50/56

To make the change permanent you will also need push rod tubes. I did not use push rod tubes in my video to keep things a bit simpler.

The final part of this experiment will be when the cam gear from the Saito 56 arrives. I will repeat the same steps and record the readings.
***UPDATE*** I checked a Saito Manual and found that the 50 and 56 share the same cam gear. Thus a definite conclusion to the experiment.

I have since added a video shot today of my 45S as a baseline run for what I am trying to achieve with this experiment. The funny thing is, I have already matched the performance of the 45S with the 50 Cam gear. The peak RPM readings are the same. The 56 cam gear might not yield any further increase.

Saito FA-45 MKII Cam gear swap (10 min 20 sec)

Saito FA-45S Baseline run (5 min 58 sec)

Posted by dmrcflyr2 | Mar 25, 2016 @ 05:35 PM | 2,293 Views
I was not really too sure what to title this post, so it ended up being long. Here is the story:

I purchased a Saito FA-45 MKII from eBay. This is a very nice engine that came complete with box, most of the tools, and all of the paperwork normally shipped with these engines. One piece of paper that came with it was EXTREMELY interesting to me anyway, the original bill of sale! This engine was purchased from Circus Hobbies in Las Vegas NV in May of 1988! Very cool.

Anyway, this engine really didn't need me to do anything to it. It was pretty clean and felt like it would run as it was. It was a bit stiff, the feeling of an engine that has not been run in years. So being me, I decided to completely disassemble it and inspect the bearings. This was one of the easiest tear downs ever. Really nothing was stuck or gave me any issues at all. The bearings were a bit gummed up and after cleaning I decided to just install them again. I can always replace them later if need be.

And then it hit me. Why not try something I have wanted to do for a very long time? I have been wanting to convert a 45 MKII to a 45S for quite a while. To my knowledge a FA-45S is just a 45 with a cam gear of a 50 or 56. The 56 was not available when the 45S came out and real factual information on Saito engine history is a bit difficult to obtain. The best I could piece together from other forums and folks that have done this was that the 45S had a 'hotter' cam.

I set out to find a...Continue Reading
Posted by dmrcflyr2 | Mar 14, 2016 @ 07:37 PM | 2,427 Views
I was restoring and getting this OS 46 SF running for a friend and sort of fell in love with the engine. We worked out an arrangment and it became mine. This was a subject of an earlier post.

This particular engine had some damage but looked to be a very low run time engine. One of the mounting lugs was broken pretty badly but the engine still ran well. There was no intrusion into the crankcase itself.

The muffler also had some strange damage, manufacturing defect or something resulting in a strange hole at the end of the muffler.

I have used JB Weld on many occasions on a variety of applications from motorcycles, to model engines. I figured it was the best to attempt to fix these issues as well.

On the engine mounting lug I created a form using Popsicle sticks glued and clamped together. Unfortunately I did not take a picture of the mold. I filled the area with what seemed to be a sufficient amount of JB Weld and allowed it to cure for about 5 hours before removing the mold sticks. This allowed it to cure just enough to remove the sticks and begin the sanding process. Once sanded I will allow this to cure for another 24 hours or so before doing anything else to it. SInce I plan on using a universal strap mount type of engine mount I really do not need to re-drill the hole, but I might do it anyway when fully cured.

The muffler I inserted paper towels into the chamber to act as a bridge for the JB Weld to cover the big hole. This I allowed to cure...Continue Reading
Posted by dmrcflyr2 | Mar 12, 2016 @ 01:13 PM | 2,537 Views
Let me start this post with a disclaimer. I am not a Webra engine expert nor do I claim to be.

Today's post features the Webra Speed 61 engine I received from a fellow modeler and friend Balsaworkbench. This is one of three engine sent directly to me from his purchase on eBay.

In a previous post I detailed the condition and showed videos of the dis-assembly. In this post I show the first times I ran this powerful engine.

This engine features a Dynamix carburetor. I have never set or run an engine with this type of carb before. I think I did pretty well. The first run went well, the second went ok but not as good as the first. I totally screwed the carb settings up on the third run, but got it dialed in again. The third run had an APC 13x6 prop installed.

Webra Speed 61 first run (8 min 7 sec)

Webra Speed 61 second and third runs (11 min 29 sec)
...Continue Reading
Posted by dmrcflyr2 | Mar 08, 2016 @ 04:37 PM | 2,736 Views
Rob here are pictures of your engines. I can post the pictures here without reducing the resolution like I have to do in email.

First the Webra Speed 61. This has got to be one of the ugliest engines I have ever seen, design wise anyway. I have only ever owned and run one other Webra before and it was a 40 Silverline. I have never seen a carb like this one before. It is a Dynamix carb; one Webra aficionados really love from what I have read. It does not move at all yet. The engine turns over and has decent compression. The bearings feel fine too. It appears to have a Dykes ring. I'll provide more pictures and information once I begin to clean it up.

The OS 46 SF looks pretty decent with the exception of the broken mounting lug. It too turns over fine and has good compression. The carb rotates freely and I do not expect any issues during clean up.

Anyway feel free to comment on things you would like to see done on these engines or anything else for that matter....Continue Reading
Posted by dmrcflyr2 | Feb 29, 2016 @ 06:25 AM | 2,371 Views
In the last 3 years I have owned 6 of these engines. Much of what I love to do in this hobby is to buy and sell engines. Sometimes if I get one in less than pristine condition I may sell it to 'trade up' to a nicer newer engine. That is the case with this engine. The FS-90 I just had was complete but the outer case was tarnished and not as pristine looking. Well when I found this gem on RCG I knew I needed to have it.

So here is my 6th OS FS-90 engine and a video of the third run. It is so new I need to break it in, so there really aren't any peak readings.

OS FS-90 third run (6 min 21 sec)

Posted by dmrcflyr2 | Feb 17, 2016 @ 04:39 PM | 2,472 Views
Just another typical Enya 4 stroke engine.

Enya 46-4c (1 min 42 sec)

Posted by dmrcflyr2 | Feb 10, 2016 @ 06:46 PM | 3,161 Views
I have found several good deals on eBay in the last month, I really don't even shop the classifieds here anymore. Plus I like to do rebuilds and eBay is full of those type engines. The balancing act is if I plan on reselling, I have to get the engine at the right price to buy the parts it needs and still at least break even.

The engine featured here is NOT one that I can flip and make money on, but I will fly the crap out of. As with so many engines on eBay, no one can really trust the seller to know what they have or are talking about. Thus these are higher risk buys.

My latest is an Enya 46-4C. The box and paperwork say it is a MKII. It is in decent shape overall. It does have a broken fin on the head and the throttle arm is broken off. One of the reasons I took a chance on this engine is that I have some spare parts for it since I have had several of these.

I estimate about 1 gallon of fuel through it based on the carbon build up on the exhaust stem and piston. The bearings could still be used once oiled up but could be replaced now too. the truly unfortunate thing is the crankcase has some strange damage on the housing where the timing gear shaft bearing fits. I am not sure if it lost a bearing or if someone really damaged it trying to get this bearing out. Either way the bearing came out on the shaft. I am not sure if I can get anything in there to dress that area up or not. If I have to buy a new crankcase all bets are off of ever reselling this...Continue Reading
Posted by dmrcflyr2 | Feb 04, 2016 @ 06:36 AM | 3,726 Views
I'm a sucker for Enya 4C engines and when I found a listing on RCU for an 80-4C I watched it carefully. For a few days I watched and pondered,; the asking price was a bit high for what it was. After about 3-4 days I submitted an offer for $30 less than asking price. Well, it was accepted. There was only 1 picture to look at in the ad so it was a bit of a gamble.

I should have known better, as I have owned enough Enya engines, they are pretty indestructible. It arrived a few days ago and I took some pictures of it. Unfortunately I am at work entering this post and I do not have the pictures on hand, but I will post them tonight.

It was pretty dirty on the outside and was quite hard to turn over. The carb had some damage and dings. it was also pretty badly tarnished. I completely tore the engine down and was happy to see that the top of the piston was not dark at all. After removing the exhaust valve I found that this was a fairly low time engine as there was no significant deposits on the shaft. The piston ring was free and rotated easily with little to no deposits in the ring groove.

Aside from the carb damage and a ding to the intake manifold it looked pretty decent. I ordered a set of crankshaft bearings but after cleaning the residue off the rear bearing I decided to just re-install them and see how it runs. It runs pretty darn nice as the video shows. This is an engine I will be keeping for myself.

Enya 80-4C (5 min 47 sec)

Posted by dmrcflyr2 | Jan 30, 2016 @ 09:47 AM | 3,223 Views
The OS 25F ABC engine was released to the market in 1982 and a review can be read here.

I bought this engine from Ebay about 1 week ago. It was advertised as "bench run only for break-in purposes". Nothing more than that. When it arrived it would not turn over at all. The exterior was excellent and did look to be a very low time engine.

As standard I took it apart to determine the condition of the inside and free it up. The top of the piston had no carbon build up at all on it confirming the low run time. There was little evidence of running inside, no excessive residue or rust, It looked quite nice. The one or two runs it had were just enough to, over time, freeze the parts in place.

Once freed up the engine turned over smoothly and the bearings felt nice. I lubed it up and decided to give it a run.

As typical with OS engines of this era, it is a fantastic running engine. Hand starts are easy and was tuned transition from idle to WOT is quite nice. Take a look.

OS 25F ABC First run (7 min 23 sec)

Posted by dmrcflyr2 | Jan 25, 2016 @ 06:52 AM | 2,999 Views
Well this engine turned out just like I thought it would, another nice running OS engine from the 80's. Not much more to say about it other than that. The video pretty much speaks for itself.

OS FS-40 Surpass first run after rebuild (6 min 12 sec)