Poulan 2.0 conversion feasibility?
 

I have a Poulan 2.0 Chainsaw that would be a candidate for conversion, but the carb seems to be mounted on the case. It is screwed to the plastic part that the handle is fastened to. Has anyone ever tried one of these?

Poulan 2.0 conversion feasibility?
 

Not sure,.. but most Poulan engines share the carb issue. Check for other Poulan threads and see what has been done with others. I am currently doing two Poulan conversions and had to make carb adapters for both the 38cc and 60cc engines. Maybe some do not need the adapter but not sure which ones.
Tim

Poulan 2.0 conversion feasibility?
 

the poulin 42 carb is mounted on the engine but the mag coil is mounted on the outside case which is not a problem if you are to use ch ignition.

Poulan 2.0 conversion feasibility?
 

CH Ign. sells a conversion kit that has a carb adapter in the kit. It is pretty expensive but I think it includes an ign. system

Poulan 2.0 conversion feasibility?
 

This chainsaw runs great right now. Not much use because it was too little for my big trees. Had to buy a Stihl 034 to do the heavy work. I also have a Fly Baby that would be perfect for the motor. It is underpowered with the 91 four stroke that is on it.

Poulan 2.0 conversion feasibility?
 

Does your 2.0 have ball bearings?
I tore down a junked Poulan Micro XXV 33cc yesterday, but it has
roller bearings on the crank, and I wonder if it is any good in a thrust application.
This saw has a reed valve, and I guess the whole carb adapter could be cut clean from the handle part.

Lars

Poulan 2.0 conversion feasibility?
 

Lars, I just picked up the same saw over the weekend. It fires right up and runs good. Keep me posted on your conversion project. It looks like the crankcase is pretty large and will require some milling to reduce the weight. I haven't had the urge to dive into it yet. Maybe in a few weeks.

Mark

Poulan 2.0 conversion feasibility?
 

Lars: I haven't torn down the motor yet. I did have the chain off of it Saturday, and it has a lot of metal on the crankcase. Poulan molded lugs into the case for all the parts to bolt into(handle, etc.). Could be a pretty good project just to get all the extra metal off the case. Might be more work than it is worth. Might be a better small one to start out with. Some of the fellows in our club say that a thrust bearing has to be added, but I don't hear it mentioned in the conversion threads very much.

Poulan 2.0 conversion feasibility?
 

I have looked in the catalogs for a thrust bearing that could fit,
but the thinnest 1/2 inch needle bearing with thrust washers will be 0.138". I dont think there is room for that.
I could always put the crankcase in the lathe, and bore out a large hole, where I can put a retainer for a ball bearing and seal.
There is space behind the flywheel for a lot of bearing housing,
but this is a project that will have to rest. Now it is flying season, and I have 3-4 planes on the building table, and a turbine in pieces.

Lars

Poulan 2.0 conversion feasibility?
 

lars, you should look at the old quadra 35cc engines. they use a simple thrust washer to take the load. the newer 42cc engines have a bearing housing added under the flywheel where the old ignition points used to be.

dave

Poulan 2.0 conversion feasibility?
 

All of the Q34s and 42s have the brass thrust thrust washers. The last US 41 I had apart had no thrust washers, and no space for thrust washer, which I didn't think to much of.

Poulan 2.0 conversion feasibility?
 

I see the point, it is a free engine, so I will use it as is.
Just exchange the steel washer with brass, or bronze, and mount it to my flying test bench, a 1/4 scale Champion.
So far it has seen a 52 cc Jonsered conversion, and a MVVS 1.60
gas+ tuned pipe. Love that MVVS!

Lars

Poulan 2.0 conversion feasibility?
 

LN-JET, do you have any pics of that Jonsered 52cc. I have one on the bench right now. I would like to see how you mounted your ignition sensor.

Mark

Poulan 2.0 conversion feasibility?
 

I had to dig out my dusty Su31 to get a pic.

Poulan 2.0 conversion feasibility?
 

Lars, i see you used a 3w ignition, correct?

i've also been using 3w ignitions on my conversions with good results but i'm not sure i'm useing the right magnet. i use 6mm dia.x4mm thick neodymium (strong!) magnets and either pole seems to work ok. no luck talking to 3w so i can't help but feel i'm doing something wrong. maybe you know what the correct setup is?

dave

Poulan 2.0 conversion feasibility?
 

Jonsered :
I milled the case on a rotary table, to get the radiused surface .5 mm larger than the prop shaft. I also made a phenolic carb mount
that is rotated to get a straight throttle linkage, and a radial mount that is sandwiched between the case halves. Rear end of shaft was cut away. Reduced thickness of cylinder spacer to 1mm.
Dont remember the saw model#, and there maybe different versions, but it makes for a light , and strong engine, with some work. My turns an APC 20x10 at 7500, and Menz 20x10 at 6700.

Lars

Poulan 2.0 conversion feasibility?
 

Zagnut:
The ignition comes from German MHM,
http://www.mhm-modellmotoren.de/zuendung.htm
But the sensor is the same as 3W. It came with a magnet,
and the red (north?) should point towards the sensor.
Dont think the magnet was larger than 5 mm though.
If you are in doubt of the function, cant you hook up a strobelight on it?

Lars

Poulan 2.0 conversion feasibility?
 

MHM-didn't they used to have an extensive engine line similar to 3w? now i only see a couple ryobi conversions on their site, shame.

i use a tach and i can move the sensor all over the place without a change in speed, even at idle, so i'm thinking that my magnets might be too strong. i also get a spark even with a really slow flip, from what i've read the 3w needs a fast flip to spark.

next engine will have a smaller magnet

dave