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Makita EA3601...the most intriguing saw to date

JMoney

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I would love to see how this performs vs a husq 435/440. Very close in weight and hp ratings and price. Of course the husq has a clam vs a metal crank case for the Makita
 
CR888

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While I have not thought about this new design to much, it certainly is very interesting. The questions surrounding the two reed cages 'may' possibly be understood by comparing them and measuring the petal thicknesses. Its the pressure differential that determines when/how quick reeds open and the setup here being discussed may be required for low speed and high speed operation. The two cages may allow for greater and lesser flow under varying engine conditions...for example thin reeds open at lower pressure and thicker reed takes over at higher rpm. I may be a mile off on this particular design but I thought I'd throw in a theory.
 
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Terry Syd

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CR888 said:
thin reeds open at lower pressure and thicker reed takes over at higher rpm.
Click to expand...

This is essentially how Boysen developed their reeds. Different reeds (material, thickness) flutter or resonate at different air flows. What Boysen did was use the thin reeds to pick up the quick response and then had a thicker reed that resonated at a different air flow. The result was the two resonances cancelled out each other and there was a more consistent air flow through the reed block.

We might be able to use two thin reeds in this engine to pick up the demand from transfer closing to the opening of the piston port.

At low RPM a reed engine has an intake open and closing profile close to a rotary valve engine (transfers close and the valve opens). However, at high RPM the lag in the reeds moves the open and closing profile closer to that of a piston port engine.

With the combination of two separate intake systems (reed and piston port) we may be able to shift the intake profile. We should be able to get more low end power out of this engine, but there is also a possibility with lighter reeds that will respond quicker to pressure differentials to be able to move the open and closing profile closer to that of a rotary engine. The result would be an engine with a very broad powerband.
 
Anthony Webb

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Newbie to chainsaws, but would like to get into a beginner model to learn how the work and do a few small tasks around the house. Where can a guy buy one of these? I'd rather not spend time/money on yesterdays tech. Are there any good alternatives?

paragonbuilder said:
Looky what showed up today!!
4bf11e8b6904e5caa8f8926187ec6224.jpg



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Click to expand...
 
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Anthony Webb

Anthony Webb

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Home depot has the Makita EA3500SRDB for $269 is this one I should consider? I know dolmar probably has something comparable as well, but if everything is moving to makita, I'd like to be sure I can get parts/service down the road.
Anthony Webb said:
Are there any good alternatives?
Click to expand...
 
paragonbuilder

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Anthony Webb said:
Newbie to chainsaws, but would like to get into a beginner model to learn how the work and do a few small tasks around the house. Where can a guy buy one of these? I'd rather not spend time/money on yesterdays tech. Are there any good alternatives?
Click to expand...

Welcome to OPE Anthony.
What do you mean by small tasks?


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Anthony Webb

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paragonbuilder said:
Welcome to OPE Anthony.
What do you mean by small tasks?
Click to expand...
I have some rail fencing I need to take down and block up. Also, we will be clearing some trails and cutting some railroad ties for landscaping purposes. It will be be only infrequently used. I'd like it to be lightweight and low maintenance enough that it is approachable for the times when I need it.
 
paragonbuilder

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Dub11 said:
Did you find a way to dial thecarb in ?
Click to expand...

No I checked the tune and it's just above the rev limiter. I checked it after letting it sit for 5 min and it was off the limiter at 13,400, after a cut it would just hit the limiter. I still can't really hear it 4 stroking. I pulled the muffler after the first tank and piston looks perfect.
I'll come up with something when I start modding it.


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paragonbuilder

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Anthony Webb said:
I have some rail fencing I need to take down and block up. Also, we will be clearing some trails and cutting some railroad ties for landscaping purposes. It will be be only infrequently used. I'd like it to be lightweight and low maintenance enough that it is approachable for the times when I need it.
Click to expand...

Sounds like it will sit a lot. The problem is ethanol will kill the Saw if it sits. So either use canned fuel if you don't have ethanol free around your area, or you may be a perfect candidate for a lithium battery Saw.



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Anthony Webb

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paragonbuilder said:
Sounds like it will sit a lot. The problem is ethanol will kill the Saw if it sits. So either use canned fuel if you don't have ethanol free around your area, or you may be a perfect candidate for a lithium battery Saw.
Click to expand...
Thanks for the tip! Can you recommend a model for me? I probably need it in the next couple weeks to keep the wife happy! :) Is this 3601 available anywhere? PS, thanks for the videos, cool watching the machine get up and go!
 
paragonbuilder

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Anthony Webb said:
Thanks for the tip! Can you recommend a model for me? I probably need it in the next couple weeks to keep the wife happy! :) Is this 3601 available anywhere? PS, thanks for the videos, cool watching the machine get up and go!
Click to expand...

Your going to have to ask Nate @fordf150 if it is available for public sale yet. He should pop in here soon. He may be able to recommend and give you a super price on something.
If you end up leaning towards battery, @Philbert is probably the most knowledgeable one here on them.


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