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Ran an octura x448 and x450(!) prop this week. Everything remained cool even with the 450. Getting some chine walking with the 450, and on one run she nosedived under water and shot up about 3 feet into the air-- wished I had a video of that! The boat is faster with the 450 but no chine walking with the 448. I'll keep playing around with these two props, both are working out great. I hope to get some gps runs in in a few weeks.
ChiefLast edited by BHChieftain; 06-06-2010, 01:27 AM.Comment
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go with 6s on that motor and a x445! you will FLY!!!!Comment
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Hi, just saw this thread and thought I'd drop in a comment; Are you greasing the shaft at all??
I used to run a Toysport Triton with a Lehner 2240/7 on 6s and the rpm would reach 47,000rpm at max throttle. Joseph Toth asvised me to used the marine grade grease and this helped keep the shaft and coupler temps very low. It ran super smooth and would reach mid 60's on a regualr basis.
Love the build thread by the way!!Do or do not, there is no try!!!!!
Aeromarine Titan 29 H&M Hawaii Kai III Proboat Stiletto ML Boatworks PS295 (No.8)
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You should try going up in pitch. You probably maxxed out the diameter for your hull. If the x648 pulls the rpms down too much you can back cut it a little at a time to lessen the load and bring your rpms back up.
Or you could go up in battery size with a smaller prop.If all of your wishes are granted, many of your dreams will be destroyed!Comment
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Steven carries them in raw form.
I don't know if you do your own props or not, but it's a really good thing to learn. Grab a balancer and a couple props and go at it. It's a great learning guide and most rewarding when you can manipulate your prop to your needs. It wont come overnight but after doing a few you'll start to get the concept.
I like what your doing on trying to get the most out of your setup first before moving on to higher cell counts. I run 4s in most everything myself.
Keep at it Cheif, your doing a great job!
Aloha,
GeorgeIf all of your wishes are granted, many of your dreams will be destroyed!Comment
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Decals
Day whatever, I've lost count....
I've decided to stick with decals vs. painting as I don't trust my painting skills. I have another all-white tenshock mono that I'll try to paint yellow at some point...
I wanted to put some custom decals on the boat, and was thinking about how to cut the shape accurately. I decided to tape a piece of wrapping tissue paper over the boat, and to use the edge of a pencil to "rub" the ridge pattern onto the tissue (would be easier to see if I used white paper, but I only had red). When I ran out of ridges to trace, I used a french curve to extrapolate the rest of the curve-- worked great.
Then I transferred the rubbing to a piece of white paper that I used as a template, then used that template to cut out the decal.
Wanted to go with white and black checks, but I only had yellow and black-- I plan to swap this out when I can find some white&black checks.
For the blue stripes, I used the decals that came with the syncron just for fun. I'll probably swap these out and fill in the entire deck with either blue or yellow, with the check pattern in the middle.
Anyway, wanted to share the tracing/french curve idea for folks that might want to do their own custom decals.
-ChiefComment
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Big thanks to Bwells and Bigwaveohs for letting me test some props. Tested an x646, and x648. Both ran cool! I really like the x648, a little more wild, and hit 43-45mph (ran with my friend's SV who clocked 41mpg, and I barely overtook him...)
X646 is more stable. I think I'll get one of each!
Here's the run with the x648
ChiefComment
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The SV27's top speed for the day was 43.8MPH, but close enough.
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Looks much better. Now enjoy that beauty!If all of your wishes are granted, many of your dreams will be destroyed!Comment
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Closing the build thread!
Over the past few months I've been tuning the syncron, and I think I've got her figured out on my 4S setup.
Best props are x645 and X646 (x448 also works ok. x648 is fun, but get too much chine walking at top speed). My favorite prop is the x646-- I can run this full throttle, but can get a little loose at times which adds to the excitement. Note, I was never able to get anything to overheat using the neu 1515 1y motor/240A hydra ESC, even with x450 and X648 props (these just have too much diameter for the hull).
I've played around with battery placement-- one is along the flood chamber wall centered along the motor, the other is on the left-floor panel, pretty far up the nose. I move the nose battery back and forth until I hit the optimal COG, which seems to be right at the front of the motor. If I bring the COG any closer to the transom, I'll get some porpoising which will eventually lead to a sub...
Here's some final video of this setup, with a couple of fun wipeouts highlighting the value of the flood chamber...
I did not GPS the boat, but raced with some that did, I estimate she's running in the mid 40's.
ChiefLast edited by BHChieftain; 10-05-2010, 09:08 AM.Comment
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Just an update--
Just could not break into 50MPH on 4S with the 1500KV neu-- I was limited by prop diameter. I swapped out the neu 1.5Y 1500 to a neu 1y 2200KV and dropped the prop down to X640. Very happy with this setup-- breaking 50mph without a sweat, and the hull handling is great.
ChiefLast edited by BHChieftain; 05-07-2011, 05:29 PM.Comment
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