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I just bought an SV27r and its ALL OVER the place, andy setup suggestions?? Battery placement and trim tabs don't help..
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Sorry for the thread-bust Bill, but when are we gonna see that ekos with the 540's finished. Looks like you've been havin fun with that jet boat! -
What does "All over the place" mean? We all know you know how to drive. Been following you now for years so your no novice. Unstable in a straight line? Have you done the basic setup for an SV27? Neutral trim tabs/ adjusted flat to bottom. Stinger at neutral to the last 4 or 5 inches of the bottom. Rudder face parallel to transom angle? With the CG set right you should be running slightly wet but stable in steering and stability.
I have heard thru the grapevine the 2.4g radio system is very sensitive to rudder input. Is there a steering adjustment for this?
JohnChange is the one ConstantComment
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interesting thread.......
actually the trim tabs and battery placement make a huge difference to the set up and run... i d suggest looking at the sv27 forum... tons of info there... i also have trouble believing that a seasoned racer like yourself can get this thing to go... sure it s flighty... over 40 mph... the hull isn t designed to go 50+... it s a RTR... a relative newby like myself got this thing (orig sv27) flying with 12 matched nimh cells / 42 55 grim prop or 440/3 / neutral strut / trim tabs adjusted according to wind chop or wakes... ran real well, even in a smallish 300 acre lake with wakes / wind chop... for sure it s sensitive in wide open turns but it s a fairly shallow v with a large freeboard... go figure...
i dunno, maybe it s a thing with you supported / sponsored guys.... love hate relationship - promote the product ??? darin gets on here and worships spektrum... you get on here and diss aquacraft ??grim gets on here and plugs aq... jt is the only impartial one who doesn t kiss sponsor a$$... i ve had a few pints of truth serum and i ll probabally get flamed for this but it all seems a little odd...
not trying to be a complete pr1ck or anything but it just makes me wonder...
if it makes any difference i hate my dx 2.0 and am about to buy a 3x... the ekos, no thanks... id buy a geico and make darin happy
... not to worry my df29 from steve arrives tomorrow 
andym / ozzie crawl et al - i may need some aussie back up here... may get hot in here soon...
cheers
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Bill,
First, forget what you think you know about battery location... V your packs so they basically touch in front of the motor. Some guys I know actually just run a single 5000 or ?? pack in front of the motor. You may lose a tad of top speed, but the boat will handle MUCH better if you keep the weight centered, and low in the boat.
Second, add some training wheels to the inside corners of the trim tabs. Bend them down about 45-degrees, about 1/4" or so in. In other words, bend the inside corners down.
Third, you can lose the radio box lid to take a tad bit of weight off.
Forth, block sand the bottom to get it FLAT! It's likely no flat. Blueprint it, and scuff up the bottom.
Set the strut neutral, but make sure you use the keel to measure it to, and not the transom. The transom is't 90-degrees to the keel.
I tuck the rudder up under just a LITTLE bit.
It'll handle really well once dialed (well for an SV, that is).
Anything more than a 42x55 prop (the legal Spec SV27 prop) and you are on your own. Hull just isn't made to go much over the speeds you'll get in spec trim.
Those are my tips... Now... go get it ready!
Darin E. Jordan - Renton, WA
"Self-proclaimed skill-less leader in the hobby."Comment
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Thanx Darin!Bill,
First, forget what you think you know about battery location... V your packs so they basically touch in front of the motor. Some guys I know actually just run a single 5000 or ?? pack in front of the motor. You may lose a tad of top speed, but the boat will handle MUCH better if you keep the weight centered, and low in the boat.
Second, add some training wheels to the inside corners of the trim tabs. Bend them down about 45-degrees, about 1/4" or so in. In other words, bend the inside corners down.
Third, you can lose the radio box lid to take a tad bit of weight off.
Forth, block sand the bottom to get it FLAT! It's likely no flat. Blueprint it, and scuff up the bottom.
Set the strut neutral, but make sure you use the keel to measure it to, and not the transom. The transom is't 90-degrees to the keel.
I tuck the rudder up under just a LITTLE bit.
It'll handle really well once dialed (well for an SV, that is).
Anything more than a 42x55 prop (the legal Spec SV27 prop) and you are on your own. Hull just isn't made to go much over the speeds you'll get in spec trim.
Those are my tips... Now... go get it ready!
I'm sure this info will be quite helpful..
The centered pack sounds right. It was chine walking.
The one I borrowed at last year's nats ran fine..Comment
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I have to disagree with "tuck the rudder under", mine was set that way but one day i hit something and it kicked the rudder out, i left it that way becuase it's handled better ever since!! Cornering seems to be much more stable. I run my strut at 0* and my adjustable tabs just slightly under neutral, the boat rides really well at speed with rudder kicked out. I run a set of 4600 nimh's, i've never gps'd it but it's quick, no doubt about that!! My SV27 is all stock except for the metal Grim Racer prop, had it for 2 years now, still running good!! I really love that little boat, i've had big nitro boats and really fast nitro riggers, but i think i have more fun running the SV27 than just about any of the many nitro boats i've had!Comment
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I run mine with the batteries in the "V" formation in front of the motor and it makes a world of difference......like Darin stated, a bit of loss in the top speed but much more civilized in handeling.Grand River Marine Modellers
https://www.facebook.com/search/top/...ne%20modellersComment
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Darin E. Jordan - Renton, WA
"Self-proclaimed skill-less leader in the hobby."Comment
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This is great! I knew my fellow pirates would assist!
Any more input will be great!Comment
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Use good cells, and drive it like you stole it! They are actually VERY easy to drive once you get them setup.
Like was mentioned, you CAN make it faster by moving the batteries back, but in race water, you'll be living on borrowed time, ESPECIALLY at an event like the Nats where there will be the REALLY good drivers, all viaing for the same water!Darin E. Jordan - Renton, WA
"Self-proclaimed skill-less leader in the hobby."Comment
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Training Wheels, dude... Gotta have them!
Will you scrub a little speed... YUP... Will the boat be faster AROUND the course... YUP!!
Let me put it this way... My 10-year old can run mine all alone with 5 other boats on the course... and does quite well...
You can do it, buddy... Want me to get him to give you some driving lessons??
Or, you can just listen to his setup guy...
Here... past testimony... : http://www.offshoreelectrics.com/for...raining+WheelsDarin E. Jordan - Renton, WA
"Self-proclaimed skill-less leader in the hobby."Comment
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