Mastermind meets the Dolmar 7900
- Thread starter Mastermind
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bryanr2
Addicted to ArboristSite
believe i read in the thread it was pine- but i read so much i might be wrong.
bryanr2
Addicted to ArboristSite
That's the smartest thing you've said all day my man!:hmm3grin2orange::msp_thumbup:
Stumpys Customs
Stumpbroke
I like that idea:msp_thumbsup:
Randy it looks strong, but I think the first saw sounds like it has a a bit more snap. What do you think??
Jwalker1911
Addicted to ArboristSite
Youre the first person thats accused me of being smart since i joined!
Mastermind
Work Saw Specialist
I concur. Though this one surprised me with the amount of snot it slings. :msp_wink:
I did a bit more lower transfer work on this one hoping to negate the loss of the slab sided piston.
steve316
ArboristSite Operative
dyno testing
Randy, wouldn't it be nice to dyno both saws and compair the grafts of the power ban to each other to see what where they were different. It would be just another piece of the puzzle.You could even do a-b-a test.outstanding work by the way Steve
Randy, wouldn't it be nice to dyno both saws and compair the grafts of the power ban to each other to see what where they were different. It would be just another piece of the puzzle.You could even do a-b-a test.outstanding work by the way Steve
Mastermind
Work Saw Specialist
I would love to build a dyno. I've been looking at using an alternator and stuff............
I'm too busy to pursue it though.
I'm too busy to pursue it though.
What were the results of the 372 and 460 comparison?
Dolmar 7900 with a windowed piston. Same numbers as the other saw. I did file the chain though.
I agree that this one looks stronger.
Mastermind
Work Saw Specialist
In a 10" cant the 372s were both the same no matter how the lowers were done. The one with unraised cylinder walls made more rpm. In no way did these results help me learn anything though. I didn't have any large wood nor the time to really do the testing justice.
Which one? The first or second?
What I meant was, how do the 372s and 460 compare to these 7900s?In a 10" cant the 372s were both the same no matter how the lowers were done. The one with unraised cylinder walls made more rpm. In no way did these results help me learn anything though. I didn't have any large wood nor the time to really do the testing justice.
Which one? The first or second?
The 2nd one looks stronger.
Mastermind
Work Saw Specialist
Ah. I've not really compared. Someone should check out the videos.....hint hint.
The 2nd one huh? I thought the first one was a tad stouter.
I don't have a good stop watch with me, but the windowed one appears to be faster, holding more RPMs in the cut.Ah. I've not really compared. Someone should check out the videos.....hint hint.
The 2nd one huh? I thought the first one was a tad stouter.
I think your 372s and 460 would take the 7900s. But you don't have vids in the same wood.
I should have my own 6401 makita before too long
Are you planning on going with a 79 or 84 cc kit or just modding the 6401 to see what you get? either way I've been looking at doing either or! And this thread makes me want to tear into it! Just wondering what your plans are!?!?!
nate
bryanr2
Addicted to ArboristSite
Ah. I've not really compared. Someone should check out the videos.....hint hint.
The 2nd one huh? I thought the first one was a tad stouter.
Somebody else can check out the videos. Everytime I watch a video I go on the look out for a new saw. VIDEOS are not my friend!
bryanr2
Addicted to ArboristSite
agree with brad. ive watched and rewatched and i think the 2nd looks faster by a hair.
komatsuvarna
Arboristsite MVP
I think so too, but I think Randy said he sharpened the chain. I think the first one was a little more ''peppier''.
The first didn't hold near the RPMs in the cut. I would go with windows and not raise the lowers so much. I'd also try more intake duration. I'm just thinking out loud, as I don't have these figured out either.
Saw Dr.
Junk Collector
I would really like to see some magic work on the FS-250!!!
Not that I would do that to mine, its got plenty of power.
Dang thing is rough on plants and flowers sometimes...
And stucco. Glad it was not in a conspicuous place on the side of the house where I started in with my "new" 250. That thing sounds like a dirt-bike. I love it. It is kinda tough to run at a very light throttle, though. I find mine 4-strokes heavily just off idle.
