any updates on this project?
interested to see dyno numbers compared to other exhaust pipes
Scooterswapshop DYNO thread Yasuni C16 pipe~
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Re: Scooterswapshop DYNO thread Yasuni C16 pipe~
Thats where the 40% fuel savings was coming from! I knew there was a catch..
2000 Elite SR50 -THE PURPLE NURPLE
50mm BBK (tai)
26mm OKO (round slide) 135 Main Jet
V-8 pipe
39/18 secondary gears (7.583:1 ratio)
36 grams in Prodigy variator
Malossi Delta Clutch & WIng Bell- Thanks RED EFT
65mph GPS (on the freeway)
50mm BBK (tai)
26mm OKO (round slide) 135 Main Jet
V-8 pipe
39/18 secondary gears (7.583:1 ratio)
36 grams in Prodigy variator
Malossi Delta Clutch & WIng Bell- Thanks RED EFT
65mph GPS (on the freeway)
Re: Scooterswapshop DYNO thread Yasuni C16 pipe~
Thats insane!!! I have a 135 on my 26mm and it get horrible mileage (82cc). I am going to go with your polini 24mm for all my builds then.
2000 Elite SR50 -THE PURPLE NURPLE
50mm BBK (tai)
26mm OKO (round slide) 135 Main Jet
V-8 pipe
39/18 secondary gears (7.583:1 ratio)
36 grams in Prodigy variator
Malossi Delta Clutch & WIng Bell- Thanks RED EFT
65mph GPS (on the freeway)
50mm BBK (tai)
26mm OKO (round slide) 135 Main Jet
V-8 pipe
39/18 secondary gears (7.583:1 ratio)
36 grams in Prodigy variator
Malossi Delta Clutch & WIng Bell- Thanks RED EFT
65mph GPS (on the freeway)
- Wheelman-111
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- Joined: Wed Oct 22, 2008 5:09 pm
- Location: Deepinnaharta, Texas
Re: Scooterswapshop DYNO thread Yasuni C16 pipe~
Greetings:
It's simple physics. That fuel in sufficient quantity is getting through somehow, or it will overheat and fry. Maybe the Main is smaller but the emulsion tube vacuum is stronger? I can't say I've noticed a drop in apparent fuel consumption, but then again I never measure - just tank up from my 4 gallon container.
It's simple physics. That fuel in sufficient quantity is getting through somehow, or it will overheat and fry. Maybe the Main is smaller but the emulsion tube vacuum is stronger? I can't say I've noticed a drop in apparent fuel consumption, but then again I never measure - just tank up from my 4 gallon container.
Wheelman-111
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
- Wheelman-111
- Moderator
- Posts: 11322
- Joined: Wed Oct 22, 2008 5:09 pm
- Location: Deepinnaharta, Texas
Re: Scooterswapshop DYNO thread Yasuni C16 pipe~
Greetings:
I suspect Signore Polini's miserly fuel consumption occurs mostly off-throttle and in steady-state cruising. Cleaner when the mix isn't sloppy-rich when the engine is revving easy. I did notice cleaner low-end, mostly, and I'm still pretty rich on mine myself.
I suspect Signore Polini's miserly fuel consumption occurs mostly off-throttle and in steady-state cruising. Cleaner when the mix isn't sloppy-rich when the engine is revving easy. I did notice cleaner low-end, mostly, and I'm still pretty rich on mine myself.
Wheelman-111
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
Re: Scooterswapshop DYNO thread Yasuni C16 pipe~
Its no secret that the oko carbs are more difficult to tune and not as high quality as keihen and dellorto. Im sure polini did a fine job of replicating and maybe even advancing the pwk style carb. Just like porting a cylinder or even blueprinting your setup adds up to better performance. I decided to go with a 26mm polini flatslide for my build. It is on the large side, which will make it more difficult to dial in, but should yield better performance. I have a PE 28mm carb from a CR80 that I got off ebay for $20 but the CT manifold is 26mm and the Keihen pe is 20 years old.
98 Elite
4 strokes are for cars
4 strokes are for cars
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Re: Scooterswapshop DYNO thread Yasuni C16 pipe~
any news on yasuni pipes?