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Bad to the bone 04-11-2022 10:42 AM

41 Apache Props
So built up 588 Apache motors where 830 HP and 900 lbs torque now 930 hp and 1000 lbs torque have #6 drives, Mercury 4 blades 17 x 27 on now should i go to larger prop and if so what is suggested size.


Unlimited jd 04-11-2022 10:45 AM

What was the rpm range of the old engines vs new? Might go up 1

Bad to the bone 04-11-2022 11:38 AM

old ones had old Fireball ignition now MSDS boxes with 6000 rpm limiter but dyno peaked out at around 5500

Bad to the bone 04-11-2022 11:39 AM

sorry old ones limited to 5200

Unlimited jd 04-11-2022 02:41 PM

More power at a higher rpm, likely to use the same props.

Bad to the bone 04-12-2022 09:00 AM

yea i should have been clear at same rpm 5200 90 more HP and 120 lbs more torque
new motors rev to 5500 or so before start to drop a bit

bigmotor 04-12-2022 11:17 AM

Just to prove to myself , that I cannot afford a boat with #6 drives................ How much is a pair of off the shelf Merc #6 props ???????????

Bad to the bone 04-15-2022 12:34 PM

looks like 3-4K labbed 2K more

F-2 Speedy 04-15-2022 12:42 PM

There's a set of Hering Titanium props in the classifieds 1 of 3 sets in the world known to exist, wonder what the cost..............

14 apache 04-19-2022 04:59 PM

How deep are the drives?

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