Stroking a Dolmar 7900

[huskyboy]

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.

Thing is definitely moving though man. You gonna mess with the rwj more or bolt on a 390xp carb and call it a day?

 

[Fruecrue]

Thing is definitely moving though man. You gonna mess with the rwj more or bolt on a 390xp carb and call it a day?

I’m probably going to leave it as is.
I’ll travel with the HD-12 as a back up if the RWJ gets squirrelly.

 

[mettee]

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

Yeah! I think that runs better, but hard to tell if its not in the same wood. RPMs see to be happy there with that load.

After seeing the other video, the other combo is much better than the 8 pin.

I think Dave is sand baggin just a little bit for the comp

 

[mettee]

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.

wow listen to that thing sing, 17K you arent kidding.

 

[Time's Standing Stihl]

Sounds good Dave. You got your 28” chain done yet???


You need more practice on your cookie cutting [emoji13]

 

[Fruecrue]

Sounds good Dave. You got your 28” chain done yet???


You need more practice on your cookie cutting [emoji13]

I have a 28” chain that’s ok, need to give it some more attention.
And yes, I need practice, a lot.

 

[Deets066]

View attachment 187733

@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!

You don’t owe me a thing

 

[Deets066]

Sounds good Dave. You got your 28” chain done yet???


You need more practice on your cookie cutting [emoji13]

I had a chain..... Iowa gtg was pretty rough on it

 

[Fruecrue]

Been a while.
Couldn’t run the saw at Randy’s, too lean.
Turned out to be a kinked fuel line.
Got that worked out now.

 

[huskyboy]

Been a while.
Couldn’t run the saw at Randy’s, too lean.
Turned out to be a kinked fuel line.
Got that worked out now.

Nice! That ash?

 

[Fruecrue]

Nice! That ash?

It is.

 

[Time's Standing Stihl]

Nice Dave. Sounds strong like bull

 

[RI Chevy]

Nice job Dave! Good find

 

[Fruecrue]

Nice job Dave! Good find

Yup, bout a month late though.

 

[Fruecrue]

bumpity

 

[Fruecrue]

 

[Fruecrue]

Saw is for sale, let me know if any interest.

 

[redline4]

Saw is for sale, let me know if any interest.

Trade for some used Chebby 2.4 pistons and timing chains, a few feet of pex and partial tub of plumbers putty?

 

[Fruecrue]

Trade for some used Chebby 2.4 pistons and timing chains, a few feet of pex and partial tub of plumbers putty?

Any sammiches to sweeten the deal?

 

[redline4]

Any sammiches to sweeten the deal?

PB&J?
I could maybe go up to some rotisserie chicken or ham and cheese.