Max Speed for McCulloch Mac Cat 338 and Mac 438

[ProjectTal]

As per the title.
I'm trying to set the high speed jet, does anyone know McCulloch max stated speed for the 338 and the 438, they are the same engine case/cylinder, but the 438 has a little more power, not sure if that's 'cus the piston bore is bigger so the max revs might be lower.

Edit: I have a laser tacho so can measure the rpm. also any manuals regards these 2 machines would be much appreciated.

Any info on this ?


Thanks

 

[heimannm]

The 338 and 438 models numbers do not appear in any McCulloch documents that I can find, can you post any photos of the saws?

May be Italian McCulloch's, Jenn Feng McCulloch's, or Husqvarna McCulloch's.

Mark

 

[ProjectTal]

Yeah they are Husqvarna Electrolux McCullochs made in Italy both 2007.

Here's the plate from the 338:
https://i.ebayimg.com/images/g/3FMAAOSwJJ1mNW5V/s-l960.webp

 

[heimannm]

An Italian made, McCulloch branded Husqvarna saw, I don't believe they ever made it to the States. You are probably better off trying to determine which saw it really and see if the specifications are available under that brand information.

Mark

 

[epo]

They have the same maximum speed: 13,000 rpm. So do other such Poulans, Partners, Jonsereds, Wood Sharks, Lidl chainsaws etc. which first had 42 cc cylinders and then 46 cc.

 

[ProjectTal]

They have the same maximum speed: 13,000 rpm. So do other such Poulans, Partners, Jonsereds, Wood Sharks, Lidl chainsaws etc. which first had 42 cc cylinders and then 46 cc.

Thank you for that info. I hazarded a guess at 13-13.8k rpm but needed confirming. No service manual for these pups can't find an operators booket either. Coming from the world of high performance 2 stroke motorcycle engines, 13k is low max rpm for an engine of this size. A 50cc single bike engine would max out at 18.5-19k rpm, but the engines in these Mac chainsaws are no were near as stiff in the crankshaft and more importantly in the crankcases.

 

[epo]

Thank you for that info. I hazarded a guess at 13-13.8k rpm but needed confirming. No service manual for these pups can't find an operators booket either. Coming from the world of high performance 2 stroke motorcycle engines, 13k is low max rpm for an engine of this size. A 50cc single bike engine would max out at 18.5-19k rpm, but the engines in these Mac chainsaws are no were near as stiff in the crankshaft and more importantly in the crankcases.

13k rpm is typical in the world of chainsaws. I would not look for a connection between this speed and the quality of these Macs.
For example, Stihl MS 240 with a similar engine displacement, which is considered "professional", has the same maximum speed quoted.
The highest permissible speed specified by the manufacturer have Stihl MS 170/180 non-strato saws with a certain model of carburetor and it is 15500 rpm. These are Stihl's low-end models. Admittedly, they also have some of the smallest engine displacements (30/32 cc).

I will still correct the information provided by @heimannm. These saws are not Italian made. They were "assembled" in Nashville AR, USA before their production was moved to China.

 

[heimannm]

Apparently I was mislead by the manufacturer's tag on the saw that says made in Valmadrera, Italy.

 

[epo]

Apparently I was mislead by the manufacturer's tag on the saw that says made in Valmadrera, Italy.

And what does the highlighted text say in your case?

 

[heimannm]

I only have the photo provided by the OP as shown above and the small print is not legible. If these actually exist in the US I can honestly say I have never seen or even heard of one, and I have seen a few different McCulloch saws.

 

[epo]

I only have the photo provided by the OP as shown above and the small print is not legible. If these actually exist in the US I can honestly say I have never seen or even heard of one, and I have seen a few different McCulloch saws.

McCulloch branded equipment stopped being sold in America after their bankruptcy.
The European part of McCulloch was taken over by Electrolux, which also continued for a while to produce some chainsaws at their Italian plant. An example of such a saw is ProMac 46 II. There were, of course, many more similar models with different engine displacement. These were sold on the European market.






This chainsaw (Mac Cat 338/438), on the other hand, came from the Nashville plant. Electrolux imported them and sold them under a number of brand names, the most popular of which in Europe was Partner. If you want to buy components for these chainsaws from Chinese suppliers, your best bet is to search for Partner 350/351.

Of course, in America they were best known as Poulan (Wild Thing etc.). Electrolux plants were, if I am not mistaken, former Poulan plants.

 

[heimannm]

Thank you for the information. Do you have any idea where the photo of the McCulloch plant was taken? I'd like to add that bit to my collection of McCulloch history.

I do have a Pro Mac 51 from that era.





I also have a number of the "Italian McCulloch" saws.

PM61





Titan 51





And of course the Titan 7, 35, 40, 50, 57, and DE50 models which were common here.









I will start looking for the Mac Cat 338/438 versions but I don't expect to find anything very easily based on the history of those models here in the US.

Mark

 

[heimannm]

I do have a few more of the Titan/Pro Mac saws from the Electrolux period, they just haven't made it through the shop to get cleaned up and ready for the display.



Mark

 

[epo]

Thank you for the information. Do you have any idea where the photo of the McCulloch plant was taken? I'd like to add that bit to my collection of McCulloch history.

It is from 2008, when Electrolux (outdoor) was already Husqvarna (2006).

I will start looking for the Mac Cat 338/438 versions but I don't expect to find anything very easily based on the history of those models here in the US.

Look for Poulan 2550, for example, which I think has a different kill switch. Or 2250 which I guess has the same kill switch.

There are some differences between these saws, which you most know as Poulans or Craftsmans. E.g. some have anti-vibration system, some don't. In Europe I have never seen such a saw without AVS. Some have chrome plated cylinders, some don't. Etc.

 

[heimannm]

Do you know if that photo is Valmadrera, Italy or some other location?

Mark

 

[epo]

Do you know if that photo is Valmadrera, Italy or some other location?

Mark

It is Valmadrera.

 

[heimannm]

Thank you for that information.

Mark