Question for the experts..
01-06-2011 | 10:36 PM
#26
RE: Question for the experts..
ORIGINAL: 1QwkSport2.5r
I didn't see a 56 on their website. The rear exhaust 50 is 17,500rpm on a 10x6, and the 60lx turns 18,000rpm on a 10x6. It appears the Side exhaust and Rear exhaust engines run the same RPM's. That surprises me a bit. I've always been told rear exhaust engines turn higher rpms and are more efficient than their side exhaust counterparts. (Then again, I've never seen an engine line that had the same identical engine come in both side and rear exhaust variations.)
ORIGINAL: airraptor
get a Jett 56 rear exhaust, with short marine pipe set up. run an APC 10x6 prop around 18,500...............
get a Jett 56 rear exhaust, with short marine pipe set up. run an APC 10x6 prop around 18,500...............
I believe the .60 LX has been replaced by the .56 LX...you can also check with Bob in the Jett sub forum, to be sure...
01-27-2011 | 12:34 PM
#27
My Feedback: (1)
RE: Question for the experts..
If you are going to try to get more than 15K out of that TT, I suggest you replace the rear bearing with one that has a plastic retainer. The sport pylon guys have found that the standard steel retainers will give up when they are turning them at 15.5k.
Another thing, I don't think you will get better speed by turning a 10" prop at 18K as the boat will not be any where near the speeds that the pitch/speed would generate. My guess is you will be running this boat at less than 80mph. What you may want to consider is going to a three blade prop and keep the pitch lower. A three blade is effectively a larger diameter two blade and will give a lot more thrust at lower speeds.
Another thing, I don't think you will get better speed by turning a 10" prop at 18K as the boat will not be any where near the speeds that the pitch/speed would generate. My guess is you will be running this boat at less than 80mph. What you may want to consider is going to a three blade prop and keep the pitch lower. A three blade is effectively a larger diameter two blade and will give a lot more thrust at lower speeds.
01-27-2011 | 08:15 PM
#28
Thread Starter
RE: Question for the experts..
ORIGINAL: RC-Bearings
If you are going to try to get more than 15K out of that TT, I suggest you replace the rear bearing with one that has a plastic retainer. The sport pylon guys have found that the standard steel retainers will give up when they are turning them at 15.5k.
Another thing, I don't think you will get better speed by turning a 10'' prop at 18K as the boat will not be any where near the speeds that the pitch/speed would generate. My guess is you will be running this boat at less than 80mph. What you may want to consider is going to a three blade prop and keep the pitch lower. A three blade is effectively a larger diameter two blade and will give a lot more thrust at lower speeds.
If you are going to try to get more than 15K out of that TT, I suggest you replace the rear bearing with one that has a plastic retainer. The sport pylon guys have found that the standard steel retainers will give up when they are turning them at 15.5k.
Another thing, I don't think you will get better speed by turning a 10'' prop at 18K as the boat will not be any where near the speeds that the pitch/speed would generate. My guess is you will be running this boat at less than 80mph. What you may want to consider is going to a three blade prop and keep the pitch lower. A three blade is effectively a larger diameter two blade and will give a lot more thrust at lower speeds.
A 10x6 APC prop got an outrigger airboat to 80mph.. Granted he's running a Jett 90LX FIRE, but still. Mine's smaller and lighter. It should boogie pretty well.
