Thread: New rotax sc impeller 2010
07-02-2010, 08:55 PM #1
New rotax sc impeller 2010
does any one tried the new rotax sc impeller model 2010
07-02-2010, 10:44 PM #2
07-03-2010, 03:29 AM #3
is that an 2010 model impeller, or only for the 2010 ski´s?
"which diameter is it?"
07-03-2010, 05:03 AM #4
07-03-2010, 08:21 AM #5
Hi are you talkig about rotax racing sc?
There are two solution:
-137 mm plus spcaer for offshore boat
-140 mm for close course.
Lemoine and fracasso has these in their official ski.
Rotax racing doesn't give psi boost info.
I do not know the real boost. Maybe malte knows the real boost... Mrracing.
The 09 137 was similar to akit les cooke but more top speed instead of accelerarion.
07-03-2010, 05:13 PM #6
07-03-2010, 05:29 PM #7
just a thought
rotax is good but a 137 wheel and spacer..isnt going to give you 19 20 psi at any rpm you are going to be willing to run...without the risk of a connnecting rod violating you ...
it is probably going to be comparible to a mini rude a riva wheel and spacer or et wheel and spacer...14 15 psi at 8600 rpm..
07-03-2010, 06:02 PM #8
+1 if a rude 3 needs to be spun at 9000 to see 20psi there is no way that a 137 is going to make 20psi boost unless it was measured at the SC, Les has made a new SC and its supposed to make 20psi but at like 8500, h also measures at the SC tho and not in the mani.
I guess in some respects it gives a better comparison as it negates any differences past the SC that could effect the boost numbers but when I talk about boost i wana know what the motor is getting. R88
07-03-2010, 06:10 PM #9
i agree you loose some in the intercooler piping ect...that is why i only see 16 ish on my rude 3...i should tap my charger and just see..
07-03-2010, 07:01 PM #10
so your guess is this rotax impeller as the same boost like a 2 rude.....i´ve a 2 rude and my boost is about 14,7 psi....i will see the diference between the 2
the blades of the rotax and 2 rude are the same size in heigth.....
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