Ok my bad. I never said it wouldn't work. I was just looking at the effeciency and longevity angle.

Rich

As far as effeciency a large single is better. More Hp. more tork and higher rpm.
But these twins are real gems.
They run so smooth and transition very well.
Both pistons counter balance the other.

Although the GT-80 is used as a race engine by rcignitions the ones I play with are great sport engines.
I recently pulled a G-62 off a plane because at idle it shook the plane more than I liked.
The motor mount that I knew was tight came loose in flight.
I haven't flown the plane with the 62cc Echo twin yet, but I have told people to come over and watch this thing idle.

I talked to a guy in canada a while back that had a G62 on his plane also.He converted his echo61 twin and not only said his plane didnt shake apart but he thought it at least had the same amount of power,he said maybe a hair more.But he said his plane was never smother at idle.Now he might be mistaken about it having a little more power but ya never know.The nickname i was told for the G62 is [old thumper].I bought a brand new G62 to put on my Byrons 101 T-6 im building[not yet,still hanging from the cieling].I think im going to put my echo 61 twin in it instead.Im not going to madera to race anyway.My GT80 is going on my 31% lanier staudacher,[ i am working on this though].Anyway,back to this thread,im ordering the aluminum and either acetal or G10 this week.I only found 2 places that would custom cut it.

The Echo 61 being a true Chainsaw engine would naturaly be in a higher state of tune.

I understand that the G-62 was a Chainsaw engine also, but I don't know the Make or the year.

This is from the redmax website.Picture didnt load but it was just a pic of a chainsaw.Says on the site redmax has been around since 1987 when it joined with zenoah.Zenoah was founded in 1910,in North America they where used in the original green machines.
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G621AVS Rear Handle Chainsaw





Engine: 2 Cycle
Engine Displacement: 62.0 cc
Carburetor: Diaphragm
Ignition System: Solid State
Fuel Capacity: 0.67 pints
Dry Weight: 12.5 lbs
Chain Oil Pump: Automatic, Gear Type, Adjustable
Chain Oil Capacity: 0.35
Chain Brake: Dual-Activated
Chain Type: Oregon® 33SL, .325 Pitch
Bar Length: 18", 20" or 24" Oregon ® Double Guard Bar
Warranty: 90 Days Commercial, 2 Years Homeowner
Features: Pure 2-Cycle Technology
Integrated Aluminium Alloy Bar Mount
Dust Free Air Intake
Dual Activated Chain Brake
Carburetor Anti-Freeze Mechanism

Hi guys this is awsome I am just learning the machineing side of the conversions and the fellow that is teaching me was very interested in this project. Sooo here is the favor is there any drawing or even doodlings of the center adapter??? thanks a bunch and keep up the project

Nothing.Im going to make a phone call and tell Ralph to look at my pics or ill send them to him and then call him.Hes the only one i can think off that might have any info on this engine.Other than i probably have the only original one made.Since i have serial #1.Im going to be ordering the square block this week and get back on it.I also have some G10 board coming to make the intake adaptors.Should be here in a few days.The center section is just going to be an adaptor to hold both cases together.My original has a bearing in the middle.Theres quite a little bit of maching done.

well keep us here in mind if some type of drawing becomes available and keep up the goop work thanks

Very nice work, I will come out to the club soon to check it out. Thanks Dave.

Well i bought some G10 board so im going to try and finish this here before the new year.Maybe try 2 carbs instead of one with a intake manifold.