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By the way, I built this boat to sell it. I'm not keeping it, even though I certainly want to. I'll be listing it in the for sale section after another one or two test runs to get it at least to a modestly decent setup.
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Just wondering, why not use a .187 flex for reliability?32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) wasComment
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I wanted to run a wire drive (thought it would be more reliable than flex cable), so I positioned the motor nearest the stuffing tube & modified the original motor mount around the size of the wire drive coupler. I don't think I have enough room to fit a .187 coupler in there (at least not the ones I have on hand). They're pretty bulky. Also, I've never run a flex cable without a Teflon liner. I don't know what that would do to the cable or brass tube. Seems like a quality .150 flex should be fine, but I don't know, yet.Comment
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I never run teflon. cable straight into the brass tube. I polish the flex though just to make me feel better. The flex does nothing to the brass. this makes for a very reliable drive line. Not saying that teflon isnt, this is just my preference. Ive had several .150 flex failures myself. I wont use a .150 flex in a 26" boat.32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) wasComment
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If I have the same results with .150 cable, .187" is the next step...Comment
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I suppose I can put it up for sale now. I haven't had much time to put in on testing it and getting it set up. I may be able to get a video and GPS numbers on it this afternoon. Weather has been crazy here. Flash flooding, hail and little tornadoes every other day, but today the sun is out. The only issue I've had is a little water creeping up the stuffing tube and being spun off the flex shaft & collet. I just did the water-line-tubing-over-the-end-of-the-stuffing-tube trick and put a piece of heat shrink over the joint on the exterior where the stuffing tube meets the strut. I haven't run it since those additions, though. It's been run about five times, total, on a pair of Giant Power 2s, 6000mAh LiPo's, and the Octura x447 prop is back on. I've finally gotten it to run at wide open throttle at a somewhat stable attitude, but I'm sure someone with more experience could get it to ride better. A more ideal prop would, likely, also make a dramatic difference in stability, but I don't have one more suitable on hand at the moment. I've found, like everyone says, these hulls are very "lifty." I'll see what I can do with it today and then create a sale thread for it this evening. My spreadsheet says I'm over $600 on this thing, but obviously it will never sell close to that. Maybe in the mid-low $400's. I really like how cool everything stays on the inside. All the electronics and batteries and wires are barely warm to the touch after a full run-time. It's still running the oem .150 flex with no issues. I'll miss this boat.Comment
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Sounds like you don't mess with Texas weather either! Maybe the offset rudder might help too. I know that's the first mod for most guys,but you have out done yourself here with this one. Did you blue print the bottom too?
Looks great man. I will be watching for the sale....Traxxas Spartan
Traxxas Blast
ABC Hobbies Super HawaiiComment
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Lol! What a great thread. Must have been the .6mph that was too much. Sorry to see it got trashed. Time for a V3
....you gotta give us more than that. Did you hit a duck or something or just take it out in the Texas tornado?Traxxas Spartan
Traxxas Blast
ABC Hobbies Super HawaiiComment
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Yeah, the GPS says 62.6, but for all I know it was 60, 61, or even 64/65. Who knows. Maybe there is published callibration/test data with error percents for the Garmin Vista C, somewhere on the web. Anyway, conditions for this run were virtually zero wind & not a glass surface, but calm. I slowly accelerated over a distance of approximately 50-60 feet, in a straight path, watching to determine whether I should ease off the throttle. I felt comfortable & opened the throttle all way. About 20-30 feet later, the boat began to porpoise, so I let off the throttle, but in the time it took my finger to react, the boat made three big nods of the bow & then took off into a triple somersault. It landed flat on it's top, & breifly sumberged before resurfacing upside down. I heard a loud pop when it hit so I was prepared for damage. When the recovery boat pushed it in, I pulled the canopies off & found both LiPo's had been jettisoned out of their straps, but everything else internally remained intact.Comment
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The actual damage is not that bad. The epoxy bead which makes up the seam between upper & lower hulls came completely off, almost cleanly, from the inside. Some carbon fiber cloth, epoxy & gel-coat will have this hull in stronger shape than it was prior. And I already have a set of high-res, 3D checkered flag vinyl graphics that I had planned to wrap the sponsons in so that will take care of the cosmetics/white gel-coat stripe down one side. After all that work, I may go ahead & blueprint the sponsons, paint the ride-pads white & have the whole boat given a few healthy layers of clear to seal the vinyl graphics & make it shine.Comment
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Man you do really nice work, love seeing other builds like this.NEVER SATISFIED RACING
Fine Design 32 V-Hull 4082+6sComment
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I've been thinking about your crash. Is there any play in the steering rod and rudder attachment? Might that cause some issues with stability at high speed?NEVER SATISFIED RACING
Fine Design 32 V-Hull 4082+6sComment
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