Another chainsaw dyno...

[Canadian farm boy]

 

[Red97]

If you can’t fix the dyno I’d start renting pigs. Fuggit

Lol it is possible.

Do believe I found out what the issue was. And where the extra vibration was coming from.

 

[MustangMike]

Hopefully an easy fix!

 

[Duane(Pa)]

View attachment 249410

That was close!

 

[srcarr52]

Lol it is possible.

Do believe I found out what the issue was. And where the extra vibration was coming from.

Do tell!

 

[Woodpecker]

Do believe I found out what the issue was. And where the extra vibration was coming from.

Golly-wobbles in your jackshaft? Asking for @DuratecMan10

 

[Catman]

I believe he is powering his Dyno with those pigs LOL!!!

 

[MustangMike]

There will be a new conversion factor … 2.5 Oink Power = 1 Horsepower!

And in addition to Bronco busting, we will be including Boar busting at the Rodeos!!!

 

[wcorey]

Do believe I found out what the issue was. And where the extra vibration was coming from.

I'd guess run out on the driveshaft, having the sprocket so far away from the bearing doesn't help that either.
Also wouldn't hurt to add a couple more bearing block/risers and a lovejoy coupling in the middle...

Something I wanted to do on the disc brake dyno but never got to...

 

[Nutball]

I too was wondering about the shaft length from the beginning.

 

[Red97]

Had a couple different size steps inside the absorber. Key made it to a larger step and spun on the shaft a bit. That caused the arm to whip a bit extra.

I'll order a higher quality 4140 shaft and a bit better bearings.

Even with the oops the shaft run out was within
.003" other than the last 2" where the key slipped and messed up the end.

 

[JimBear]

So... What you are saying is the dyno will be down for awhile longer & this thread will revert back to oogling over baby pigs, discussing pig rental & you trying to drive up the pork market by subconsciously trying to trick us into buying more bacon? Where is that @Mastermind fella doesn’t he rent pigs also??

 

[jacob j.]

it’s OK to not have the biggest and best of everything......seriously.

Don't tell that to the condom companies.

 

[Red97]

So... What you are saying is the dyno will be down for awhile longer & this thread will revert back to oogling over baby pigs, discussing pig rental & you trying to drive up the pork market by subconsciously trying to trick us into buying more bacon? Where is that @Mastermind fella doesn’t he rent pigs also??

Maybe...

Looks like Tues should have the rest of the parts to repair.

I plan on adding an outer bearing on the other side of the drive sprocket. Keep all the deflection out of the shaft then.

I guess I could provide more porky pics....

 

[Fifelaker]

Maybe you could breed the pigs with a cow and have bacon burger?

 

[CR888]

Those piggies are sweet. Can't believe how many latch on for a feed at one time!

 

[Red97]

Those piggies are sweet. Can't believe how many latch on for a feed at one time!

All or none. She will have milk most all the time. But will really drop it once she says it's feeding time. All the little ones nurse at the same time or miss out on that round. That don't happen often.

All of these gals are equipped to feed 12-14 at a time.

 

[Red97]

Maybe you could breed the pigs with a cow and have bacon burger?

Hmmmm....

Interesting.

 

[David Young]

All or none. She will have milk most all the time. But will really drop it once she says it's feeding time. All the little ones nurse at the same time or miss out on that round. That don't happen often.

All of these gals are equipped to feed 12-14 at a time.

Uhoh prelude to tata pics.

 

[Dieselshawn]

On the dyno I’ve built, it’s very smooth running.

It’s got 3 bearing blocks.

2 of them hold the shaft. The drive sprocket is on the outside with no issues of deflection but can replace the chain if I needed to without taking the machine apart.

The pump housing has a bearing block and the pump itself is connected to the drive shaft by a love joy coupler.

This dyno uses a needle scale which doesn’t move much by vibration.