RE: Echo BME twin
 

Don't need a dial indicator. Just shine a light in the spark plug hole and look in the exhaust port. If both cylinders go dark at the same time you got it. If not a feeler gauge will tell you how far off you are.

RE: Echo BME twin
 

That assuming ports are identical height in both cylinders and base gaskets are exact ect...ect are exact. I like a dial indicator. Capt,n

RE: Echo BME twin
 

Its the port timing that counts. The gasket and deck heigth will both effect the dial indicator.

RE: Echo BME twin
 

I believe it will be the same exact port timing that counts.
Unless the port timing is matched the engine will not be optimized.
Deck height needs to be maintained so the compression raitos will be he same.

It should not be hard to do, it's just another small detail that needs to be taken care of.

RE: Echo BME twin
 

I was thinking of making the interface between the crankshafts a shrink fit on mine, so that indexing could be checked and set before welding...

AV8TOR

RE: Echo BME twin
 

Did that money order arrive for you yet airbornrc ?

AV8TOR

RE: Echo BME twin
 

It seems like the base gasket and the deck heigth will also affect port timing and dial indicator. Most likely if ports are in time with each other....the top dead center will be very close too. Well if she runs good...thats all that counts. Well except for if its kinda heavy...thats not good!!! Capt,n[:-]

RE: Echo BME twin
 

Well, a twin will never weigh less than a similar size single cylinder engine at least in theory, but it sure is cool!!

;)

AV8TOR

RE: Echo BME twin
 

av8tor. The money order has not made it as of Saturday. I am out of town till Wednesday.

RE: Echo BME twin
 

Av8tor
I dropped off your parts at the post office This morning.

RE: Echo BME twin
 

Mark, have you been able to run your twin yet?

Tim

RE: Echo BME twin
 

airbornrc Thanks!!

I almost went out to the workshop to work on my twin last evening, but I was just too tired and lazy. I've been making myself leave it alone until I finish up a few other projects already in the works. One of these days soon...

AV8TOR

RE: Echo BME twin
 

I had to get some customer fiberglass work out and have not gotten the crank pinned. I also need to get an ignition.

RE: Echo BME twin
 

where can i get one of the cases

RE: Echo BME twin
 

Just drop an email to Keith or give him a call. This thread has been idle for a while so he may still have some. By the way I wonder if Mark has gotten his running yet.

RE: Echo BME twin
 

I purchased some extra cases and if someone needs one send me a PM.

RE: Echo BME twin
 

Huey-pilot glad to see you are back on. How did you do in the tornado? Many of us down here in Mobile chipped in with supplies and clothes for you up there.

RE: Echo BME twin
 

HOW MUCH FOR A CASE AND HAS ANYONE GOT ONE RUNNING YET

RE: Echo BME twin
 

Read back in this thread. Airbornrc has his finished but don't know if it is running. When I get moved and settled I will be working on mine. Trying to move and reset 3 tons worth of machinery may take me a bit.

RE: Echo BME twin
 

I will sell two of my cases for the same price that I paid, $40 each plus shipping charges. Thanks for your interest Tim, the tornado missed my place and I only lost some shingles. We appreciate the supplies and other items.

RE: Echo BME twin
 

Can someone please e-mail me @ [email protected] the dimensions of the finished engine and a rough weight. That would be great, as i really need to know before i order a case. Cheers,
Sam

RE: Echo BME twin
 

Would someone please post the weight and some performance figures.
A lot of people would like to know.

RE: Echo BME twin
 

Now don't anyone get all excited, as this is just the "mock up" assembly to check clearances, etc. But it IS cool!!

:D

AV8TOR

RE: Echo BME twin
 

AV8tor dimensions and weight of the mockup please!!!!

RE: Echo BME twin
 

Very nice. Someday mine will look like that also. :(

RE: Echo BME twin
 

Everyone wants to know weight. Lets say it will probably be best in a airplane that needs nose-weight!!! Capt,n

RE: Echo BME twin
 

Airbornrc posted a weight of 3-1/2 pounds sans mufflers and ignition. The 3W-56 has a claimed weight of just over 4 pounds. Whats a few ounces either way?

RE: Echo BME twin
 

Hi,

Ok, it weighs 3 lbs., 8 oz. as pictured. Not too bad. What's a Ryboi weigh?? And remember, it's 48cc.

7 3/4" wide from the top of the head to the top of the other head. (If you run regular ignition, the plugs will stick out farther.)

6" from the backplate mount to the face of my prop adapter.

4 5/8" from crankcase bottom to the top of the carb bolts.

AV8TOR

RE: Echo BME twin
 

As pictured...was all the internal parts needed inside? Capt,n;)

RE: Echo BME twin
 

Yes, everything except the front oil seal, which weighs basically nothing.

AV8TOR

RE: Echo BME twin
 

That is one sweet ***** looking engine. What was the price tag for all of the parts? I might look into building one myself. I would like to have something like that in my 1/3 Christen Eagle.

RE: Echo BME twin
 

Don't think it would fly the Eagle. Smallest engine I have seen in one is a 50cc. I have 2 cases and when I get around to it I should have less than $150.00 in mine without ignition.

RE: Echo BME twin
 

AV8TOR, Would you mind giving me the dimension from the center of the shaft to the top of the carby and the center of the shaft to the exhaust port. As i need to know these for clearances issues inside my cowl. Cheers, Sam

RE: Echo BME twin
 

Ok, looks like it's approximately 3.5" from crank centerline to the top of the carb mounting screw, and 2 3/8" from centerline to the top of the exhaust port mounting flange.

My friends say I can't put mine on a cowled airplane cause it's "way too pretty to cover up and hide in a cowl"...

AV8TOR

RE: Echo BME twin
 

It would look good on a old style Eindekker!!!! Capt,n

RE: Echo BME twin
 

I have a big SR Batteries Eindekker, (kit). I have a Honda GX-31 four stroke for it, but I have worries that might not have enough power to fly how I like. (I like a definite surplus of power in everything I own.) ;)

Maybe the twin will end up on the Eindekker some day. I am thinking I will test it out on my Giant Big Stik. That too ought to be fun...

Captain, I have a friend interested in those engines if you could do a bit better on the price...

AV8TOR

RE: Echo BME twin
 

Are there other cylinders that would fit on these cases?

RE: Echo BME twin
 

You would have to check deck heights, but I believe anything from 21 to 25cc engines will work. The 25cc engines might need a spacer made for below the cylinder to achieve the proper deck height as it has a longer stroke, but once again, I'm not sure....

AV8TOR

RE: Echo BME twin
 

I was thinking Homie 33, Toro 25 or something like that.

The welder giveth and the milling machine taketh away.

RE: Echo BME twin
 

The block is designed for the Echo 23.6cc engine. I doubt it would fit other brands. One would have to have one in hand and check all sizes, clearances, etc. to see if it could be modified to work with something else.

For one thing, a lot of the other engines have a cantilevered crank that would be tough to join with another crank. The Echo engines have a crankshaft with a shaft and bearing on both ends of the crank.

AV8TOR