Welcome to R&D.lots and lots of it. And lots of ungood pipe parts laying around and lots of cookies made.😂. I think there was one saw Jeremy and I put 3 pipes on and reworked them and still not right. But we go it.
That’s a pretty cool pipe design with that long taper into the belly and it’s really possible that you might not be getting every single thing that if you made those little changes would get that Ultimate power. Looks like she’s definitely making a huge gain!!! LMFFAO!
Very nice!!! I know nothing about pipes, the 70cc scooter pipe worked pretty good on my wild thing, idk why, but im sure it could be better by a lot if i actually knew what i was doing 😂
This test really opens the door to more tests! Could you take the same engine (this saw would be a great dyno mule) and compare pipe designs on stock ports? I’m curious what a pipe designed for 9k looks like compared the 14k pipe on the graph. How about pipes designed with displacement in mind, 30cc vs a 70cc pipe.
tuned for a 30cc at 14k, does good on a 60cc at 10k. I'm guess I'm not too shocked by that, but it sure proves the value of testing! Personally, I'm happier with a broader midrange than all out peaky , but I'm not racing them, just using them. Are you using a specific software to design the cones and lengths?
I was surprised to see just how broad this was for an expansion chamber. I use a few different software to calculate the pipes to the ports and then to create the files for the cone cuts
did you ever try to mod and get the best of 525 husky .. for top handle , ?? ,, is it make a real diff, thank's to read this ,,,,it,s lite weight ,, and i'm not the strongest guy,,,so
Joe, how about giving folks a run-down on the dyno and giving us a walk around?
I'd be interested in that as well. Especially the calibration part and how much is converted to heat in the water
Awesome joe
Thank you
Welcome to R&D.lots and lots of it. And lots of ungood pipe parts laying around and lots of cookies made.😂. I think there was one saw Jeremy and I put 3 pipes on and reworked them and still not right. But we go it.
Funny how it works isn't it. Everything just right, and still no work. Cobble something together and it works great lol
That smile at 6:25 says it all.
That's insane that the smaller pipe worked!
Loving the new intro!
Those are some impressive gains!! Thanks again for this fantastic series, drilling down on the incremental changes.
That’s a pretty cool pipe design with that long taper into the belly and it’s really possible that you might not be getting every single thing that if you made those little changes would get that Ultimate power. Looks like she’s definitely making a huge gain!!! LMFFAO!
I can't wait to see what happens when you port it and try that pipe.
I like it when something unplanned ends up working well. 7 hp on 59cc saw is impressive having not had the cylinder off the saw. Nice work.
Ok Joe now back to my mini expansion chamber haha! I can’t believe it gained that much with a somewhat random pipe!
15.000 🥳 Congrats!!!
Run pretty good with the pipe.
Love your videos 😊
Well done Joe, great episode! Keep them coming.
Looks like your lil 30cc pipe is now a 59cc pipe!😆
Very nice!!! I know nothing about pipes, the 70cc scooter pipe worked pretty good on my wild thing, idk why, but im sure it could be better by a lot if i actually knew what i was doing 😂
Great video sir, fascinating to see what a little modification can do. Can’t wait to see what a base gasket delete will do.
Working on that one.
This test really opens the door to more tests!
Could you take the same engine (this saw would be a great dyno mule) and compare pipe designs on stock ports? I’m curious what a pipe designed for 9k looks like compared the 14k pipe on the graph. How about pipes designed with displacement in mind, 30cc vs a 70cc pipe.
Joe if you got another stock carb would have been nice to see what an exhaust mod with air horn mod would have been with original carb
Nice gain in power for a pipe that's tuned for a saw that's only half the cc
That’s really impressive, great job Joe
Pretty decent gains from a shot in the dark.
Running good!
That tickles me 😊
Only?
That's great 👍
Man i would love to have a sawbuilder like you in Sweden🙏
Hello I m in France
Good info, thanks for sharing!
I put a Yamaha 3 wheeler pipe on my 268xp and it makes a difference for sure. Cheers
That thing is ripping. My factory G366 doesn’t cut anywhere near that fast. That’s nuts how fast that is. Im happy with the way the factory saw runs.
This is a great learning series. Be sure to mess with case volume at some point. Always interesting to see what mods are complimentary.
tuned for a 30cc at 14k, does good on a 60cc at 10k. I'm guess I'm not too shocked by that, but it sure proves the value of testing! Personally, I'm happier with a broader midrange than all out peaky , but I'm not racing them, just using them. Are you using a specific software to design the cones and lengths?
I was surprised to see just how broad this was for an expansion chamber.
I use a few different software to calculate the pipes to the ports and then to create the files for the cone cuts
Wow!!
Cool
test on dyno different 2 stroke oil to see if increase hp
Nice !
👍 👍
What does the heat do to the muffler how does it work
Hotter pipe has stronger pull/push effect on the charge.
@@dynojoemods2764- Despite the calculation theory... Is it reasonable that a smaller pipe would perform correctly on the 170?
Saw ran great when hot can you dyno a hot pipe
did you ever try to mod and get the best of 525 husky .. for top handle , ?? ,, is it make a real diff, thank's to read this ,,,,it,s lite weight ,, and i'm not the strongest guy,,,so
👍🏻👏
That pipe has too big of diameter header pipe. No backpressure on the MS170. A larger diameter cone would probably help bring back the torque.
Can you dyno a saw on non eth and a saw on e10?