Another chainsaw dyno...

[Deets066]

Straight stick of oak. We do the best we can. Come on. Work with me here. Lol

Dyno...

no variables.

 

[RI Chevy]

I thought I saw 7.5hp or something?

 

[RI Chevy]

Dyno...

no variables.

Well...

 

[Deets066]

Oak is so far from consistent

 

[Red97]

I thought I saw 7.5hp or something?

That was the no air filter run

 

[Deets066]

Well...

Own it Jeffy

 

[RI Chevy]

Oak is so far from consistent

Most consistent wood we have to test and load saws. Especially when you get a straight stick.
We usually make 3 cuts and average them.
Best we can do with what we have...
AND we video tape it to boot...

 

[Nutball]

Dyno...

no variables.

There's still loading technique - how fast and smooth the knob is turned.

 

[dall]

There's still loading technique - how fast and smooth the knob is turned.

maybe you should build something to take that out if you think you can

 

[Deets066]

There's still loading technique - how fast and smooth the knob is turned.

Joe knows when he does a good run or not. Takes several tries

 

[Red97]

There's still loading technique - how fast and smooth the knob is turned.

Not enough to make a difference with the dampening done in the software.

I can stab the valve open and stall a saw in 4 seconds, the data "spike" is normally lower than what a peak power would be.

If I load it too slow the run and data points all repeat multiple times.

A good smooth run will be 12-15 seconds and drop every 100 rpm with no skips or duplicate rpm readings.

 

[cuinrearview]

Is this *s-word really happening? One guy. His machine. His rep on the line. Shut the FU seriously right now you *f-wording bishes.

 

[usmcbuckwild]

There's still loading technique - how fast and smooth the knob is turned.

i concur. Not beating up on OP for how he does it, not one bit. It “would” be ideal if the load was computer controlled and applied the exact same on every saw. Not saying he doesn’t, from the videos i have seen it looks pretty consistent, but to remove any and all doubt it needs to be -00% the same every time. No, I do not know how to make the load the same. Just speaking for sake of scientific method. Please don’t beat me with dull chains

 

[RI Chevy]

Hey now. Cool ya jets there.
It's friendly discussion...
Come on now... [emoji2957][emoji3061][emoji1787]
@cuinrearview

 

[usmcbuckwild]

Is this *s-word really happening? One guy. His machine. His rep on the line. Shut the FU seriously right now you *frenching bishes.

Easy buddy. Its a discussion. No accusations of bias being made. We are spit balling to assist, not critiquing and criticizing. I’m sure the same thoughts have already run through his head, there are people here who have already done this type of set up who can offer some insight. That’s all.

 

[JimBear]

She’s on display in MO

Hopefully he isn’t going to charge admission to to see it. I plan on going down & laying eyes the beast next time I am in the neighborhood. Well, I guess 40 miles is in the neighborhood, I just don’t go south much.

 

[Nutball]

i concur. Not beating up on OP for how he does it, not one bit. It “would” be ideal if the load was computer controlled and applied the exact same on every saw. Not saying he doesn’t, from the videos i have seen it looks pretty consistent, but to remove any and all doubt it needs to be -00% the same every time. No, I do not know how to make the load the same. Just speaking for sake of scientific method. Please don’t beat me with dull chains

Yea, not saying there's much variation going on here, but it is definitely something to consider.

I'm just too broke right now to build my own. I did do a little test trial of the eddie current brake last night to see if such a cheap dyno would be practical, and the results were promising.

 

[huskihl]

Buts, tears, and more buts.
Right on schedule.

 

[Canadian farm boy]

Buts, tears, and more buts.
Right on schedule.

 

[huskyboy]

Lol it’s really entertaining trying to find where I left off reading in this thread when I get home from work.