Guys I am just looking for some advice and wisdom on this motor. I got it a while back as a conversion project and was waiting for the plane well I got the plane now the fun of the conversion. It is an echo cs-500vl serial number 0069027,also on the tag it says kioritz corp. I have an electronic ignition for this motor. I guess I would like know what you guys think and how you would go about motor mounts. I have a royobi, homelight and a homelight saw under my belt this one just seems abit overwhelming. The story is that it was only run for a couple tanks before it backed over, the motor is fine but its life as a saw is over. thanks for you help any thoughts are welcome.

This will probably make you a real nice engine, but there is some work involved. Take it all apart, and you will easier be able to see what and where to cut. Then make an aluminum plate mount and mount it in whatever manner is possible to the engine after you get the block all cut out. Usually you can find some unused bosses on the engine block that you can drill and tap to mount your plate. (Keep this in mind when you are cutting the block out.)

Anyway, it is worth taking a real hard look at doing, because the Echos are excellent engines. These were the basis for the BME line of engines. They are high quality, powerful, and light.

Good luck,
AV8TOR

thanks I was hopping it was a dimond in the rough I thought that the echos were good conversions. The work is kind of the fun part for me so I will see what happens. is there any hop up secrets for this motor? thanks for the help

Usually the chain saw engines are in a pretty good state of tune for our uses as they come; especially a high grade one like an Echo. About the only thing you might do besides using a free flowing exhaust is to check and make sure the exhaust timing is around 150 degrees more or less. The original carb, if it is a two mixture needle model will probably work fine.

AV8TOR

av8tor I was hoping to use this motor on an OMP edge profile what do you think about this combo?

Whew!!! A 50cc Echo on an 11 lb. plane? Well, you will definitely be using that left stick on the radio! It will probably take off at 1/8 throttle.

A bit of overkill really. That engine will probably have 25 lbs. plus of thrust. But hey, like my signature says, "If it isn't scary, it's nowhere near powerful enough....."

AV8TOR

That is what I like to hear..I dont like under powered planes and I have the motor so I figured I would see what happens. should have plenty of wing, just stay off the go stick to avoid the dreaded flutter and have some fun right??

Let us know how it turns out, and yes, watch the flutter speed.

AV8TOR

Well, I saw video of one of the 79" Yak 54 kits with a BME 50 on it. I also spoke to Mike about putting a Brillelli 46GT on one before Brilllelli folded. Mike had no troubles with it, he just said to use epoxy on the front end and make sure the construction was solid to take the extra vibes and power.

I still have the Yak kit sitting in the box waiting for an engine and time to finish it. I continue to watch for a Poulan 46 to come up for cheap in the local papers for a conversion project.

So I think it will be excellent! And yes, watch for flutter.[X(]

Mark

somthing I was wondering and I have asked a few others, but does the diameter of the ring holding the magnet affect the timing? I under stand that you would just compinsate with your final set up but I was wondering ???

The answer is yes but no.... If you are using an old style Kettering type ignition system, and the plans for one are here on the web somewhere, then yes, the diameter of the "ring holding the magnet" has an effect. With that system, there is a dwell time to consider, and it is entirely possible depending on the diameter of your "ring", that you may have to even use more than one magnet to get a proper dwell.

However, all modern systems are based on a CDI design, and you use only one magnet and the diameter of the flywheel or magnet ring so to speak is unimportant.

AV8TOR