Need for speed

[Jesse J]

the rest of the shots, rudder needs to come back 1" to be inline with the drive doggy - right?

Who will be the first to comment on my strut angle?

[Chuck E Cheese]

looks good. i bet your problem with heat is from running too wet. air out the nose of that thing and it will fly.. note the angle of the strut on mine (excuse the bent rudder, i hit some rubish) even with CG at 30%. you are running a good set-up for 4s.

[D. Newland]

Here's where you're going to get alot of different information about your setup. It's up to you to test, test, test. Thanks for posting the pictures.

Turn fins-Do you have blunt leading edges near the top? If so, make sure only the sharpened leading edge is what's in the water. Also, angle them back 45 degrees.

Not sure why you chopped the strut, but it may be OK with that power system. That boat loves a 3" strut when more power is being used. Yes-bring the rudder in.

When I set up a mono, I square everything first (flat trim tabs, flat strut, turn fins 45 degrees back, etc, and try to get the boat to ride correct with COG adjustments. If I can't get there with COG movement, then I go to more/less trim tab, more/less strut angle, more/less turn fin angle (this is done depending on boats turning attitude), more/less angle on the rudder.

I like to find the setup that gets the boat running with a little bit of bow lift when running down the straights. Not plowing...theres a difference. Then you tighten up the setup just a bit from there (a little weight forward, a little tab, a little strut adj, etc..one at a time).

[Jesse J]

Great, thanks guys I will work on these tips. The strut chopping was a recommendation from D. Smock I believe. I recon I could have tried it first.... can't glue it back now, eh?

I forgot to mention the COG on this setup is just a tad forward of 25%. I have the markings to check each time, but I have pretty good attitude with about 27%. I will lift up my strut a bit more now that I see your pics, thanks for posting. I will try to get vid soon.

[Chuck E Cheese]

good luck! let me know how it goes

[785boats]

Hi Jesse. J
That setup is almost exactly the same as my hull except for one thing. It's the turn fins. As D. Newland pointed out, there is too much in the water. As he suggests lay them back & sharpen them all the way to the top. I don't like to have the fins in the water down the straights at all so mine are set up to have the tips about 1/4" to 3/8" off the bench when the hull is sitting flat & level. When she banks into the turn they start to work.
Of course I doubt that this is what is causing your batteries to get hot. I would suggest replacing the Deans plugs with 5mm or 6mm bullets on all your connections, including the motor & ESC. It made a difference to mine as the Deans plugs & wiring used to get hot. Now the wiring is cool, which goes to show how much resistance & therefore current drain the Deans plugs created under higher loads. That may not be the answer either, but every little bit helps.

I run an Ammo in mine on 4s with an X637 or a Grim Racer 40 x 52/3 blade. That's basically a 340 3 blade & has given me my fastest speed of 45 mph.
The Ammo loves to rev on smaller props. Anything over an x440 is too big. Revs drop, speed drops, current draw & temps go up. At least that's what I (and others at our club) have found.
All the best.
Paul.

[ozzie-crawl]

( i copied my setup of 785boats) turn fins are to big i tried larger ones on mine and it slowed it down a lot, i added a picture so you can see the size of mine, these hulls turn really well so only need a very small turn fin
keep trying jesse j as once you find its sweet spot you will have a very good boat,
i have read some were that this hull ran at 70mph at a s.a.w event

[Jesse J]

WOW, I'm not looking for 70mph.

With above set up, this afternoon she ran GREAT!!! just prop and rudder wet. tilted turn fins back, COG ~27%. Didn't get gps, but hopefully tomorrow!

[H2OCamel]

It looked very good today when it was running very stable and nimble. I will bring the radar gun tomorow also so we can double check speeds. The Hpr is ready to rock!
See you in the morning.

[785boats]

Hey Jesse.
Amazing how much difference a few tweaks can make isn't it. Now that you have it running nice & loose, it begs the question, do the batteries still get hot, or are they cooler after a run?
Something to be mindful of now though is that if the boat is too loose it will flip easily when it hits a bit of chop or the wake of another boat. If you find that this is the case I find the best remedy is to drop the angle of the strut ever so slightly. About 1/2mm at the end of the prop shaft to begin with. But on calm water the more loose the better.
Looking forward to the video & the numbers.
All the best.
Paul.

[Jesse J]

I don't know where I mislead you guys in the heat of the batteries? They have never been over 100F, sorry if I mistyped, but batts are fine. Good point, Paul about angle, on th glass today it was allllllmost bobbing a bit, but runnin real nice. I could see how some chop might want me to wetten her down some.

I think we got some vid today, just need to light a fire under camel the video editor's arse and get it downloaded and edited and Youtubed. It is definitely in the 40mph range and probably ready for some competition. (once I solve some radio issues).

[H2OCamel]

I think we got some vid today, just need to light a fire under camel the video editor's arse and get it downloaded and edited and Youtubed. .

Is that so......I gave up the video editing hobby so I could spend all of $$$$ on this hobby!!!! I haven't done any editing in over 5 years

[Jesse J]

oh come on, it IS in the name of science and only 15 min of video, besides how much it gonna cost? You know what they say, "there's no time like the present"

[785boats]

Sorry Jesse. My bad.
I had just been reading another thread before I posted on yours & the person there was having trouble with overheating batteries. For some reason it seems the old grey matter put the two together while I was typing up the post on your thread.
Have a good one.
Paul.

[Jesse J]

No worries, I just noticed others had mentioned hot batteries in this thread and I didn't want to muddy the waters. Thanks for you input!

I am working on vid, soooooon. Camel? anything?