dissecting an earthquake chainsaw

[BlueSmoke12]

Quake 3816

What's your guess?

How much cutting speed improvement will I get after a thorough Muffler Mod? .........nothing else

I'm taking this opportunity to teach my son how a two stroke engine works. Were doing a project together.

He is doing a science experiment for school and the teacher approved a before MM and after MM expiriment. The thoery is more exhaust out = more fuel in. That should increase performance some.

Were evaluating the results by timing a cuts on a common piece of oak.

The teacher thinks the gain in cutting speed will be slight 3% maybe. I think it may be more.

I realize I may have to fatten up the carb to keep it from being too lean after the mod.

 

[pyg]

Hello, my name is pyg and I'm a quaker. I wasn't always this way, at first it was homelite, then poulan, then stihl, then husky, but in the end quake. First I tried a Northern Tool Powerhorse 45cc and has was overjoyed for days (3-4 actually) until the oiler quit. Upon inspection it appeared that the oiler gear was stripped. A post in this thread reported the same thing and that it was an "easy fix"... yeah :bang:. Also the airfilter leaks dust, very bad. Well CAD has an obvious fix, an Earthquake 4518 "parts saw" (from sellingitasis) which is nearly identical but .375 pitch. I also have a big orange saw and although I've used chainsaws for over 25 years my interest has been limited mechanically until around a year ago. I am currently an amateur in the oldest senses of the word. My newly discovered interest has been mostly inspired by 2 cycle transportation options, viz chainsaw sized motor integrated with bicycle. Compared to chainsaw motors what is currently available on the market seems technologically retarded. If I'm wrong about this observation please correct me. Anyway, I can't purchase any kind of 2 cycle bike motor for less than an Earthquake and if I can solve the mounting issues I think I have the transmission issues covered. I intend to monitor head/exhaust temperature and mod for torque and endurance. I realize that for obvious reasons tuned pipes aren't used on chainsaws, but given the opportunity wouldn't a chainsaw engine respond well to this? Anyway, I've learned more from lurking on this site than from Gordon Jennings, Graham Bell, Dempsey, motoredbikes.com, and all the rest of the intertubes. Thank you for your support. Hopefully my recovery will be swift... err, and I can post pics of a QuakeBike (tm).

 

[Chris-PA]

Quake 3816

What's your guess?

How much cutting speed improvement will I get after a thorough Muffler Mod? .........nothing else

I'm taking this opportunity to teach my son how a two stroke engine works. Were doing a project together.

He is doing a science experiment for school and the teacher approved a before MM and after MM expiriment. The thoery is more exhaust out = more fuel in. That should increase performance some.

Were evaluating the results by timing a cuts on a common piece of oak.

The teacher thinks the gain in cutting speed will be slight 3% maybe. I think it may be more.

I realize I may have to fatten up the carb to keep it from being too lean after the mod.

I never ran my Earthquake with just a muffler mod, I went straight to a full porting before I ever started it. Also, the exhaust port is quite small, so the benefits of a muffler mod may be reduced. However, I would easily expect more than a 3% improvement. 3% will probably be well within the margin of error for timed tests in real wood anyway.

 

[Philbert]

. . .I realize that for obvious reasons tuned pipes aren't used on chainsaws, . . .

Don't assume that!
Search for 'hot saws'

Philbert

 

[diggers_dad]

Quake 3816

What's your guess?

How much cutting speed improvement will I get after a thorough Muffler Mod? .........nothing else

I'm taking this opportunity to teach my son how a two stroke engine works. Were doing a project together.

He is doing a science experiment for school and the teacher approved a before MM and after MM expiriment. The thoery is more exhaust out = more fuel in. That should increase performance some.

Were evaluating the results by timing a cuts on a common piece of oak.

The teacher thinks the gain in cutting speed will be slight 3% maybe. I think it may be more.

I realize I may have to fatten up the carb to keep it from being too lean after the mod.

I ran a 3816 with a muffler mod and hand filed chain. 25% gain easy.

 

[056kid]

This time I'm for real. So tired of seeing this thread about a dumb piece of #### saw. I hope they all blow up...

 

[Chris-PA]

This time I'm for real. So tired of seeing this thread about a dumb piece of #### saw. I hope they all blow up...

You're likely to be disappointed.

 

[naturelover]

This time I'm for real. So tired of seeing this thread about a dumb piece of #### saw. I hope they all blow up...

I'm tryin!

#4 has become my test mule, loaning it out, noodling blocks of wood before splitting them and burying the bar in wood wayyy to big for it.

It has become my main saw. I am going to see just what it'll take.

I'm even running plain ol ethanol mix instead of the good fuel the other saws see.

I have a feeling it will last quite a long time.


Sent from my iPhone 5 using Tapatalk

 

[BlueSmoke12]

056 Kid......

Your opinion doesn't matter since you have NO experience with a Quake saw.

 

[o8f150]

this time i'm for real. So tired of seeing this thread about a dumb piece of #### saw. I hope they all blow up...

gfy

 

[milkman]

My arthritis in my knee is healed, and I only have two Earthquakes and they're not broken in yet. When they are, I'm fully expecting to be 10 yrs younger, although I don't think they'll cure cancer yet.

 

[056kid]

How do you unsubscribe? I wish not to see that dumb toothless face below 08f150 any more than I have to.
No I have not run the saw and never will.

 

[o8f150]

How do you unsubscribe? I wish not to see that dumb toothless face below 08f150 any more than I have to.
No I have not run the saw and never will.

sorry,, but your stuck,,, so get your earthquake out and have fun with us

 

[laddo90]

I like their design, only proplem is mine is about done for now, I ran it to lean a little to long. My buddies turned out a little better, It keeps up to my 026.

 

[056kid]

I have three saws in my tool box. The smallest is roughly equal in displacement to two earthquake saws. I have no need for one and frankly can't understand what is so exciting about them. If they manufacture one that I can throw around in the fall & buck that's a different ballgame.

 

[stihl023/5]

It is a face only a snackie could love.:msp_wub:

 

[o8f150]

It is a face only a snackie could love.:msp_wub:

got that poopy right:msp_biggrin::msp_biggrin:

 

[laddo90]

I have three saws in my tool box. The smallest is roughly equal in displacement to two earthquake saws. I have no need for one and frankly can't understand what is so exciting about them. If they manufacture one that I can throw around in the fall & buck that's a different ballgame.

Jackyl Screwdriver - YouTube just switch screw driver for earthquake.

 

[o8f150]

I have three saws in my tool box. 1 poulan wild thing,,,1 echo cs-310 and 1 mini mac

sounds like you need 1 so you'll have a real saw

 

[Streblerm]

I have three saws in my tool box. The smallest is roughly equal in displacement to two earthquake saws. I have no need for one and frankly can't understand what is so exciting about them. If they manufacture one that I can throw around in the fall & buck that's a different ballgame.

Kid, is that like child? The more you post in it the more it goes to the top. Take your negative attitude and post somewhere where people care D.

And you have a box full of big saws, compensating for something? D.

Keep hanging around so you can neg rep me. You deserve it. At least I've contributed something to the thread.