DME3
zeg maar Dimitri
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Best Mid Race cylinder?
- Thread starter adas
- Start date
i dont hear a difference in noise between running at 11k and 13k.
If you look at the dynos for Team MHR they make peak hp at just under 12k rpms. Throw on a C16 and the dyno looks just like the mid-race rpms you are looking for at 16hp. So stick with what you have becuase it is perfectly what you want. 10k rpm max power, 16 hp.
If you look at the dynos for Team MHR they make peak hp at just under 12k rpms. Throw on a C16 and the dyno looks just like the mid-race rpms you are looking for at 16hp. So stick with what you have becuase it is perfectly what you want. 10k rpm max power, 16 hp.
This might be handy
edit: about 7700 RPM at highest power
Aloha, thanks, this is more what I expect from a sports cylinder. Amazing you can get 16 pk at such low revs. Which pipe did you have for this test?
frank
i dont hear a difference in noise between running at 11k and 13k.
If you look at the dynos for Team MHR they make peak hp at just under 12k rpms. Throw on a C16 and the dyno looks just like the mid-race rpms you are looking for at 16hp. So stick with what you have becuase it is perfectly what you want. 10k rpm max power, 16 hp.
Aloha, I refer to scooter attack dynos a lot myself. I would rather have a cylinder tuned at 10k and having the Yas16 match to it. Here we have a higher revving cylinder mismatched to the lower revving Yas16.
frank
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DME3
zeg maar Dimitri
This is from an Yamaha Aerox with Stage6 racing, Yasuni C16, Malossi MHR Overrange etc.
Not my scooter btw
thats a crazy dyno. How would you tune a bike to run 7000-9000 rpms with a pipe that revs mid 11s? Seems like you'd be in over-rev all the time and not making any power. Wonder how much better the power could be with a pipe that makes more power at 7000 rather unlike the c16 which makes it power closer to mid 10s-11k.
Your clutch springs would be as weak as stock to start at 4000 rpms.
Your clutch springs would be as weak as stock to start at 4000 rpms.
DME3
zeg maar Dimitri
Imo you're right. Don't think that those RPM's on the dynochart are correct.
A have an other chart of S6-r with C16 and it peak's 14,8 bhp at 10225 RPM
Aloha, I am comparing my stock Malossi MHR Replica with my "Tuned" MHR Replica. I feel all around the Stock Replica is a better cylinder to drive in the city.
Pluses and minuses for the Stock MHR Replica.
1: much more torque
2: quieter and less rpm/noise in the city
3: Power starts at 8200rpm
Pluses and minuses for the Tuned MHR Replica.
1: Less bottom end (but will get it back with stiffer clutch springs)
2: more top end power but does not replace the torque lost from stock
3: power starts at 9500rpm.
4: when cruising rpms drop out of the power range easily.
BTW I am using a 42mm stroke with head machined out for the 1.4 mm height difference so I have 1.4mm more bottom end power.
What power rpm range is the metrakit 2 tuned for?
I would be looking for a cylinder with very large ports and with low durations.
frank
Pluses and minuses for the Stock MHR Replica.
1: much more torque
2: quieter and less rpm/noise in the city
3: Power starts at 8200rpm
Pluses and minuses for the Tuned MHR Replica.
1: Less bottom end (but will get it back with stiffer clutch springs)
2: more top end power but does not replace the torque lost from stock
3: power starts at 9500rpm.
4: when cruising rpms drop out of the power range easily.
BTW I am using a 42mm stroke with head machined out for the 1.4 mm height difference so I have 1.4mm more bottom end power.
What power rpm range is the metrakit 2 tuned for?
I would be looking for a cylinder with very large ports and with low durations.
frank
xzburnoutzx
Italjet Dragster
Where is the Metrakit SP2 on sale in the internet shops and what about Top Performance Due Plus with a Modular head. I always have thought thats a good one. Ideas about the Due Plus+Modular head.
DME3
zeg maar Dimitri
TP DP is a good and fast cilinder. But for about the same price you have stage6 racing or an SP2.
Try www.scooter-attack.com They have lots of parts.
Try www.scooter-attack.com They have lots of parts.
xzburnoutzx
Italjet Dragster
Whats the difference between Polini Corsa and a casual Top Performance Due Plus. Im planning on switching my Corsa for a Due Plus. Due Plus should go 12000rpm and Corsa only 10000rpm any ideas and thoughts? I want a cylinder that lasts no that it pull for some 1000km like hell and then fades away. Ive also been thinking about Stage 6 Racing. Thoughts please? Or recommend others for lets say about 180 euro.
xzburnoutzx
Italjet Dragster
I have to change rings every 1000? :S What about the Metrakit SP2 is it the same thing about the rings?
DME3
zeg maar Dimitri
I don't know if you have to change the rings every 1000km, but the S6r has a bridged exhaust port, which means more wear on the rings.
SP2 has a bit less power, but is very relieble! It has an oval exhaust port with boost ports, thus less wear on the rings.
Imo it is the best choice if you want the most power for street use, with not to much wear and maintenance!
Other cilinders with oval exhaust port (except voor high end cilinders like EVO2 and PR2) don't give as much power as the SP2, not even the TP Due Plus.
SP2 has a bit less power, but is very relieble! It has an oval exhaust port with boost ports, thus less wear on the rings.
Imo it is the best choice if you want the most power for street use, with not to much wear and maintenance!
Other cilinders with oval exhaust port (except voor high end cilinders like EVO2 and PR2) don't give as much power as the SP2, not even the TP Due Plus.
xzburnoutzx
Italjet Dragster
I have a Malossi Crank with a 10mm pin. Is the Metrakit SP II with a 10mm?
DME3
zeg maar Dimitri
xzburnoutzx
Italjet Dragster
What pipe would make good performance with a Stage 6 Racing, Due Plus or Sp II. I have a Gianelli Shot, do I need a more high revving one and which one?
