Stroking a Dolmar 7900

[RI Chevy]

Glad your OK Dave

 

[Fruecrue]

Glad your OK Dave

Franks Jeff.

 

[RI Chevy]

Good thing you were wearing your PPE clothing. [emoji16][emoji6]

 

[mettee]

That's how you know you have a powerful saw it just shears chains..... Hahahahaha

 

[Fruecrue]

Good thing you were wearing your PPE clothing. [emoji16][emoji6]

Ummmm...., about that....
Nah, never mind.

 

[Lightning Performance]

Tested the chain catcher today. It works.
View attachment 184385

Dislike button!

 

[Fruecrue]

Fixed the broken chain.
9 pin, 14” cottonwood.

 

[redline4]

Looks good Dave!
Got any more changes to make or things to try? Or just going to run it?

 

[Fruecrue]

Looks good Dave!
Got any more changes to make or things to try? Or just going to run it?

I think I’m done with the saw however I may advance and retard the timing a couple degrees and time the cuts to be sure.
Trying to match the chain and drive set up to suit what I expect to see in Tennessee is top of the list right now.

 

[mettee]

I assuming you ran an 8 pin with a chain that had a little more bite, but I'd be curious to see that if not.

Stroker and all, the torque is there to take advantage of.

 

[redline4]

I have a couple chains that Dave did up for me, and they have plenty of bite. He makes a good chain!

 

[mettee]

Was just curious is all, not questioning his chains. I haven't seen anything posted about it.

More curious about taking advantage of the torque since he was slowing down the cut with pressure

 

[Deets066]

I assuming you ran an 8 pin with a chain that had a little more bite, but I'd be curious to see that if not.

Stroker and all, the torque is there to take advantage of.

Says it was a 9

 

[mettee]

Says it was a 9

Yes, I saying that I assume at some point he ran an 8 pin... If not, then I'd be curious to see it/try it.

 

[redline4]

I found this, but that was earlier in the build and I believe he made changes in ports and such after.

 

[Fruecrue]

Different chain, more aggressive for sure.
Same tune, I strapped a tach to her.
Tune wanders a bit. First piss revs after warming up a bit at around 14k.
Piss rev between cuts when hot and it’ll wander to 17K.
Seems nice in the cut though, I wonder if the divider in the RWJ is playing games at no load full throttle.
Either way, it’s holding 11- 12k in the cut depending on pressure.

 

[RI Chevy]

Nice Dave!

 

[redlight066]

The competition?
Yup, I seens it.
Dude beats me every year. Lol.

You seent that......?

Saw that this weekend and realized it was time to coagulate my feces

 

[Fruecrue]

You seent that......?

Saw that this weekend and realized it was time to coagulate my feces

Sir yes sir, I’ve seen it.

 

[redlight066]

@Deets066 I still owe you for the brake handle. I haven’t forgot. Honestly I haven’t had a chance to run the solo. I’ve been way too busy with repairs and rebuilds this year to play with my own saws
John’s 681, and that chain.....wow!