04-20-2006, 03:44 PM #1
GTX SC Results w/ B Kit, Injectors, and Fuel Controller
Here we go:
72.1 @ 8200/8250
Air 75/Water 64
82 mm ring
4 bars of fuel
Siemens 55 lb Injectors
Nils' Fuel Controller programmed by (bttek1) Brian
Skat 14/19 3 Blade
Brian (bttek1) did a fantastic job programming the controller. No way could I have ever done to the controller what he did. There is obviously a ton of his time put into the program. Idling the ski is around 12.8, which is exactly where Brian wanted it. I will send him the complete breakout and he'll decide where the controller needs tweeking. Mid range RPM's were from mid 10's to low 13's and 8000 and up, it was between very low 10's to 10.5 @ WOT. Again, it was set up to run a little rich so all in all today was a successful day. Very little water in the hull as opposed to the last time when the entire engine pay filled with water. It is obvious that the single bearing going out was the culprit. Guess I need to go to the 83 mm ring to up my RPM's but am thinking that my top end may drop unless I bend the prop at the same time? I will make another run with just changing the ring to the 83 and then go to the Solas 15/20 to see what happens. The other 2 missing mph must be in the ring and prop combo.
04-20-2006, 03:52 PM #2
You need to take 1mm out of the trailing edge of your prop. That will get those RPM's up and also yield better acceleration and top speed.
04-20-2006, 04:01 PM #3
Fanf******tastic results. Glad to hear you didn't sink this time
04-20-2006, 04:05 PM #4Originally Posted by Green Hulk
04-20-2006, 04:06 PM #5Originally Posted by gtxsc03
04-20-2006, 04:22 PM #6
Jay, read the thread in the tech section. Taking 1 mm out of the prop is something you can easily do yourself.
If you still want me to do it i will.
Dont go bigger with the rings. It will just slow you down.
Optimum ring size is 81 mm. Pitch for optimum RPM's with the 81 mm ring and you will fly!
04-20-2006, 04:40 PM #7
- Join Date
- Jul 2005
- Powhatan, VA
Go Devil ! I went over to Watkins Landing around 3:30 and it was wide open.
04-20-2006, 05:34 PM #8
ran my ski as well today red devil... but would feel real bad jacking your thread. i don't think the 15/20 is gonna do it... it sucked in my ski and we're very close to each other right now. I ran the stock prop today, and the mid-range and top-end acceleration blew away the two SOLAS props i have... i mean blew them away!!
i'm running 8400-8450 at 3/4 throttle today with a 82 mm ring. Also.. the 81mm ring gave me crappy acceleration. i don't think the 3-seaters are gonna be anything like the RXPs in the pump combos. I'm inclined to play with 82mm for awhile... too bad i dont have a 83 ring (altho that's pretty much what the stock venturi is)
i bet your ski would love my skat pitched 14/18.5 with a race finish on it... for some reason i couldn't fling my 14/18.5 mroe than 8000. the 15/20 had me jammed at 7900, and i took a sizeable amoutn of pitch out of the 15/20 and gained nothing and acceleration was absolutely boring. when i ran the B kit and RR ECU... i ran 8300 and 73.2 mph on the 14/18.5
04-20-2006, 07:26 PM #9Originally Posted by RXP04
04-20-2006, 07:32 PM #10Originally Posted by Shibby1485
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