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hey guys,,would like to hear ideas..got my cyberstorm wet today..runs great for p limited..it seems to turn in good, but last half of turn it wants to spin out..i run a speedmaster stinger strut..dead level at 3/32 off bottom of boat..trim tabs level also and leadeing edge of rudder even with drive dog on prop..and bottom of rudder in between 1.25 and 1.5 inches below bottom of boat..like I said..seems to run good..maybe a tad wet but this is on smooth water..oh..center of gravity is about 10.5 inches from back of boat also..sory no pics right now..any advice greatly appreciated
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How much rudder do you have below the prop at it's lowest point? I use 3/4 to 1" as a rule of thumb FWIW.
That hull is 32.25" right? If so I'd try moving the GC back approx. 1" to start.
Does it have a turn fin?MODEL BOAT RACER
IMPBA President
District 13 Director 2011- present
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it has turnfins..right at 3/4 inch below bottom of prop..will have to move battery tray back but will def try..so cog should be around 9.5 inches from transomComment
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Yes sir. You should find a happy place between 28 and 30%.MODEL BOAT RACER
IMPBA President
District 13 Director 2011- present
IMPBA National Records Director 2009-2019
IMPBA 19887L CD
NAMBA 1169Comment
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well, i can't speak for your hull in particular, but if Delta force hulls have anything in common, then i will compare it to my df 26, which needed medium sized turn fins, which seemed larger than needed, but helped me out. i was having turning issues as well which were solved after a swap from small to medium. jmtcThere's a hole at the center of earth where the rest of the world sinks but i stand still...Comment
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You can tuck your rudder a bit too............NEED PARALLEL CONNECTORS?? QUALITY 5.5MM, 8MM, 8 AND 10 AWG, GET THEM HERE:
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thx guys..looks like main thing is my cog too far fwd..but will try allComment
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Without pics/video it is tough to diagnose the OP's issue. A common cause is inadequate lateral stability due to not enough rudder and/or not enough turn fin. A large turn fin helps to keep the boat locked in the turn without rocking or hooking (spin out). Some hulls need more area than others, it is difficult to go too large. A large fin can always be rotated up to reduce drag if needed. A small fin......will always be too small.
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Used to have that problem. Big rudder, strong servo, point and shoot.
In a left hand corner I bet that rudder completely leaves the water. I'm confidently suggesting a bigger blade will get rid of the spin.Comment
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I agree with the bigger rudder needed, if you take the Pursuit hull that is very similar in size & design. The bottom of the rudder is 2 1/4" below the keel & 1 3/4" below the tip of the lower prop blade.Comment
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On My df 35 pirate I have big turn fins big rudder . And my batteries ar set further back then any other boat I have!Comment
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On My df 35 pirate I have big turn fins big rudder . And my batteries ar set further back then any other boat I have!Comment
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bad pictures , but i get the impression that the turnfins are not mounted correctly
got a picture from behind , transom?Comment
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