Another chainsaw dyno...

[srcarr52]

I keep going back and fourth... This shaft with the proper bearing fit sure showed the misalignment in the bearing blocks.



I am moving it over about 1". It will start to crowd the tq arm and controls on some of the larger powerheads. For running and starting the saws.

I couldn't believe how much the shaft flexed with some of the stronger saws...

It's not really a vibration I am trying to get rid of. It is excessive runout/wobble at the shaft. That keeps the whipping motion out of the arm. This should be 10x better than before.

It’s about impossible to get three bearings to line up perfectly. I’d move the one pill block towards the chain sprocket and keep the torque arm as close to the other as possible. That brake was designed to be run on a free end of a double simply supported engine anyway. You’re basically recreating that.

 

[Red97]

The sprocket being right next to the existing bearing should eliminate the need for a third bearing...

It’s about impossible to get three bearings to line up perfectly. I’d move the one pill block towards the chain sprocket and keep the torque arm as close to the other as possible. That brake was designed to be run on a free end of a double simply supported engine anyway. You’re basically recreating that.

Sounds like moving the sprocket closer to the bearing is next on the list.

Removing the leverage should do the trick.

Brake side is already as close as possible.

 

[Time's Standing Stihl]

Sounds like moving the sprocket closer to the bearing is next on the list.

Removing the leverage should do the trick.

Brake side is already as close as possible.

Done yet????

 

[Red97]

Done yet????

Closer than it was...

 

[srcarr52]

Closer than it was...

Is this thing making noises yet?

 

[Wilhelm]

Grinding noises, bearings are shot!

Dyno will be down another month or so, gives Red the opportunity to live out his saw fetishes on Your saws.

 

[Red97]

Is this thing making noises yet?

Should be tomorrow.

Grinding noises, bearings are shot!

Dyno will be down another month or so, gives Red the opportunity to live out his saw fetishes on Your saws.

Nah, I have spare bearings...

 

[Dieselshawn]

Once this machine is running, it’ll be running so much, the water will turn to steam.

Will be visiting....

 

[srcarr52]

Should be tomorrow.

 

[Red97]

Looking for a 5/16 drill...

 

[Woodpecker]

Looking for a 5/16 drill...

It's in the drawer next to the 10mm socket... you're welcome

 

[Red97]

It's in the drawer next to the 10mm socket... you're welcome

Found it. Now where is the 3/8×16 tap? And the portamag drill?

 

[Spladle160]

Portamag? I think all mag drills are claimed to be portable and none really are.

 

[Red97]

Found em

 

[Spladle160]

That one doesn't look so hateful, what would you guess it weighs?

 

[Red97]

That one doesn't look so hateful, what would you guess it weighs?

12 ish lb

Upside down, behind the back, weak hand is still doable to set the magnet.

Have a smaller hydraulic one, but it takes short tapered drills. Then you have to deal with the pump and lines etc.

Portable is all relative lol

 

[Red97]

Moved the sprocket over 2" should be a lot better. Plenty of shaft for the 3rd bearing if needed.

 

[cuinrearview]

How many saws you got there waiting on this thing right now?

 

[MustangMike]

Enough to test if the new mods work well!!!

 

[Red97]

How many saws you got there waiting on this thing right now?

More than I would like to admit...

15 or 17 total. Counting the redo saws.