Anyone know or 50+ cc engines that can be converted?

Any twin conversions?

Anyone ever made a twin by bashing the two singles and fabricating a new case and crank?

I did a serch on the topic but didn't find to much so I appologize if this is covered in another thread.

GB

Only chainsaw twin ever made was the Echo 62cc, no longers sold here in the US.,.Parts are still available, and D&B engines makes a twin using the crank and cylinders...Pricey parts....
One of my customers made a big twin using 2 Husky cylinders..Made his own case and put two cranks together..Works great.....It CAN be done..Easier to buy one........[8D]
I have a customer's inline twin made from 2 Quadra 50s...Made in Canada, called a Merlin...Heavy and very pricey....Also had an inline twin made from 2 G62...The hardest thing to get right on an inline twin is the coupling between the engines...Most grind a hex on the cranks and use a hex coupler...Precision Eagle twins and a few others were made this way...

Only chainsaw twin ever made was the Echo 62cc, no longers sold here in the US.,.Parts are still available, and D&B engines makes a twin using the crank and cylinders...Pricey parts....
One of my customers made a big twin using 2 Husky cylinders..Made his own case and put two cranks together..Works great.....It CAN be done..Easier to buy one........[8D]
I have a customer's inline twin made from 2 Quadra 50s...Made in Canada, called a Merlin...Heavy and very pricey....Also had an inline twin made from 2 G62...The hardest thing to get right on an inline twin is the coupling between the engines...Most grind a hex on the cranks and use a hex coupler...Precision Eagle twins and a few others were made this way...
Once in a while the Echo twin will show up on ****, also sold by John Deere, same engine...

The thing about large singles is that you can get more port area compared to a twin.
Larger ports = more power.

Ralph

Thanks for the replies guys.

I have been contemplating the step to gas for a long time and have been thinning my hanger in order to migrate that way.

In addition to moving up to gas I am also interested in machining / converting my own engines. My dad was a tool and die maker and first class machinist for 40+ years and since he has retired (10+ years ago) he is itching to get back ona engine lathe & mill so we are looking for a project(s).

Ideally it would be really cool to machine / mill a new crank case and shaft and untilize existing pistons and jugs, etc. for the top end.

However, neither my dad or I have enough small engine experience to design and fabricate the crank, although I suppose some research could solve that problem.

I have been following the threads here on conversions and find them fascinating.

I have also visted your webpage RCIGN1 and it is very impressive and cool especially the drone engine .

Are there any other web sites which have similar information on conversions and design that you guy's are aware of?

GB

if you want to try your luck with some Sachs engines i have some parts here to offer also a Husqvarna.

Hello geardaddy,

I am somewhat familiar with sachs engines and the Husqvarna line.

Tell me more.

What do you have?

What is usable?

Are these parts of a retired engine?

Displacement, etc.

GB

Have plenty of 5.8 parts and one complete 61cc husky which would be a good place to start on a 120cc twin. Have some 2.4 sachs also. All are saw engines in good shape, the duds go in the scrap bin.