Another chainsaw dyno...

[Duce]

I'm going to one up ya here and ask for videos of any saw over 100cc and over 200 psi

Here is a 120+ cc saw ................

View attachment 279742

Video of that would be great!

 

[Moparmyway]

Video of that would be great!

Ya gotta give the elderly a chance to upload ........................

 

[ayoungtexan]

I'm going to one up ya here and ask for videos of any saw over 100cc and over 200 psi

Here is a 120+ cc saw ................

View attachment 279742

Seems like quite the arm and shoulder exercise pulling that

 

[Moparmyway]

Seems like quite the arm and shoulder exercise pulling that

I'm not a wimpy guy ................ but I had to have my son do the compression test as I could only get 1 revolution on that saw, no matter how hard I tried, no matter how many times I tried, and no matter how much I told myself that wasnt going to fail.

So, if this means than my man-card is in my sons pocket, welp, then I'm good with that, because this saw was one jackrabbitt to pull over !!

 

[Red97]

What is real fun?

Trying to start them big mean things while strapped to the dyno...

 

[Duce]

I had to have my neighbor help test my Miller Mod 390 at right around 220. He held it down and I pulled on it, what a video that would have made. 58 year old 150 lb guy holding it down and 66 year old 225 pounder pulling starter. Not sure I got a good reading. Neighbor asked why I would want a saw like that? He did like how it cut his firewood up.

 

[MustangMike]

My Asian 660 is easy to start and cuts very well. 8.6 Hp on the dyno is not bad, and with the exhaust at about 97 she is not hard to start.

In fact, I think she will out cut a lot of harder to start saws of the same size.

I feel for you with the 395 Al, I would not want to swing that thing around all day long!

Hope your sore muscles recover fast!

I know you have some big logs over there that need a big saw, I've seen em! Good thing you have that skid steer !

 

[RI Chevy]

Video of that would be great!

Why the video of a compression test? Just curious. Kevin has a high degree of personal integrity.
If he says it, you can bank on it..

 

[Moparmyway]

Why the video of a compression test? Just curious. Kevin has a high degree of personal integrity.
If he says it, you can bank on it..

I allways encourage people to ask questions and make sure that they are going down the right rabbit hole, so I definitely don’t mind when someone asks me for a video of something that doesn’t fit the everyday norm.

I usually try to keep in mind that not everyone has the history that some of the seasoned members have here, and I’m allways learning, so I welcome the opportunity to put up another “non you-tube” video. Them executive you tube jackrabbits can go suck on a stump

I’m really looking forward to seeing everyone at the next Ct GTG ...........
Where’s Dan ???
@paragonbuilder

 

[Duce]

Why the video of a compression test? Just curious. Kevin has a high degree of personal integrity.
If he says it, you can bank on it..

Sorry, you must have taken it the wrong way. No doubt his saw has that compression, just wanted to know if others have had a time of it like I have had. Neighbor and I must have looked laughable getting a reading on my saw.

 

[Nutball]

I've always figured if ever I had such a saw and needed to check compression, I'd just use a drill. Rev it up with the decomp open, then let it shut and get a reading. You'd have to run it backwards to avoid loosening something.

 

[Redfin]

Video and pics of your snapped crank.

 

[Nutball]

Why would a 1-2hp drill break the crank on a 7hp+ engine? I'm not talking about an impact driver. I guess it's been done before if you bring it up.

 

[Moparmyway]

Why would a 1-2hp drill break the crank on a 7hp+ engine? I'm not talking about an impact driver. I guess it's been done before if you bring it up.

Key word here :

GUESS

Video and pics of your snapped crank.

Or stripped flywheel nut

 

[Nutball]

I could go clutch side, it would be easier on a stihl.

 

[Moparmyway]

What direction do you spin the crank to remove the clutch ?

Plus:
How much material is on the crankshaft where the crank tries to spin the pto compared with how much material is there on the pto while trying to spin the crank ?

Its a recipe for a broken something

 

[sawmikaze]

Did ya get that redmax blower yet?

Are you gonna come with me or not sparkles. You can get your degree from the school of hard knox in just 12 weeks.

 

[sawmikaze]

I wonder if the 6-10 percent gain from one means you can leave work 6-10 percent earlier? Maybe @ayoungtexan can get a job with you Ryan and find out. Let us know if he leaves work earlier. He’s in a hurry because he says he’s too busy to have a job. Lol

I wanna send down big pieces and see how good he can rope. I'll burn his paws a few times to wake him up.

 

[Nutball]

I wanna send down big pieces and see how good he can rope. I'll burn his paws a few times to wake him up.

Or lift him off the ground.

 

[Nutball]

What direction do you spin the crank to remove the clutch ?

Plus:
How much material is on the crankshaft where the crank tries to spin the pto compared with how much material is there on the pto while trying to spin the crank ?

Its a recipe for a broken something

Compression should read accurately no matter the direction of rotation on piston ported engines right?

I think I see where your coming from, but couldn't you say the smaller end of the shaft is putting just as much power into the engine as the engine is putting out? Obviously that's not the direction of the flow of power, but the force should be the same on any weak transition point on the shaft. Granted not all clutch removal tools are good at delivering more than a quick burst of torque, but I'm not trying to put 7hp+ back into the engine from 0rpm like how you don't just yank a rope. You pull through the compression a little before yanking, so you can build up speed with little resistance before the next compression stroke, and simply add energy to the inertia of the flywheel.

It would be a good experiment for a worn out saw.