Quote:
Originally Posted by seafariskye
Andre
Will be very interested to know the info - thanks for your reply, and look 4ward to hearing...
Pete
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Pete
2 tests were carried out
TEST 1
Bravo 3 drive 1:81, prop 26"
it took 4-5 seconds to reach 2000RPM and then the turbo charger engaged and the rib got up into plane
High speed turns were carried out maintaining a constant speed of 30 knots
with 2 persons on board
it is possible to over rev the engine 4100+ spare power : 40 knots
3900 RPM - 38.9 knots
3000 RPM - 28 knots crusing speed
2500 RPM - 20.7 knots
with 12 persons on board we found that the engine achieves max revs for this engine type : 3900 RPM
top speed dropped to 36 knots
at 3000 RPM the speed dropped to 25 knots
at 2500 RPM speed was 18 knots
TEST 2
Bravo 1 drive, 1:50, Revolution 4 prop 23"
2 persons on board
with 2 persons on board similar result to the Bravo 3
at 3900 RPM 38knots
at 3000 RPM 27 knots
at 2500 RPM 18 knots
then a test was carried out with 8 persons on board (not everybody enjoyed a blast in freezzzzzing temp)
(I was not present at these tests
)
at 3700-3800 RPM speed 34 knots
at 3000 RPM speed 25 knots
to maintain a a good planning position the revs had to be held above 2500 RPM
at 2700 RPM speed 21 knots