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Ohhh...its not the pretiest of mods done and I really had to stretch it out to get the batts up front for the wieght but it works. I will try and get a picture.
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PT-45, 109mph, finally gave up after last bad crash
H&M 1/8 Miss Bud 73 mph
Chris Craft 16 mph -
Been awhile. I've been photo documenting the build as I go, but just haven't had time to post. I actually raced this boat Sunday!
Was looking for a simple, replaceable, 1pc seal for the rudder that didn't require any glue. Found this pushrod seal (traxxas villain I think) that fits the speedmaster rudder hole perfectly. I sized the hole in the transom to fit tightly with the rest of the seal. We'll give it a try and see what happens.
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Rudder and strut mounted. Only used (2) screws on the rudder.
Made an alignment tool on the lathe. Slip fits into the brass tube and fits into the collet.
I need to get the correct rudder mount. I have the opposite side (should have the brass breakaway screw on the bottom).
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Decided to go back to mounting servos in the tub wall again. Forgot why I stopped doing that in boats, but I'm sure I'll remember soon! Managed to trace this one pretty well. Fits nice.
Yes, that's a TRAXXAS! Lol! I've had every other servo in the sun fail, but these water proof high torque jobbies do pretty well.
BTW - There are RC car servo mount backings behind the cloth to thread into.
Used 3mm machinable rod (I think it's 1215 steel??). Anyways, it's threadable without a die made out of DIAMOND!
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Used an aluminum ball stud from one of my pancars on the rudder side. Hopefully this won't snap.
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Had to step the stuffing tube diameter down to match the strut bushing size. I am running 0.187" with a teflon liner.
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Made the turn fin and mount out of 6061. Mounted the fin. This actually took a lot more time that I thought it would. Had to make sure the fin mount was square. I set a level across each sponson bottom and matched it to that angle. 4mm bolts. Drilled and tapped into the aluminum.
Gotta go. Redwings back on!!!!!
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Like the servo mount in the wall, those engine well are plenty strong. the traxxass seals are great too just require a 3/8 hole and pull thru, I have used them on my boats.Comment
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Thanks Guys. I hope it will be competitive this year. I gotta get the CG figured out.
Here was the maiden run that Bob filmed (X442, slow and stable): http://youtu.be/Ja4cAWrO52w
Mike - Lol! I thought you might comment on the Teflon. I've had it in every boat except for (1). It's just always worked for me.....seals well and I seem to get away with lighter oil. No doubt, it IS an extra thing to go wrong. I've just always hated the loose fit of the 1/4" brass and 0.187" cable.
I was talking to Jimmy about teflon on Sunday and how to restrain it by CA-ing the first 1/2" into the stuffing tube (sanded both the Teflon and the brass prior). Here's a pic....
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Here are a couple pics with batteries. The protech straps really work well to hold the cells.
Speaking of batts, so far I am liking these 'pulse ultra' cells. The heli guys seem to like them too, and they were avail at the prop shop, so I figured I'd give 'em a crank. So far, so good....and my reference is a pair of hyperion's!
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Been way too long since the last update. I've been taking photos along the way....
Made this contraption to hold the boat while I painted. The vice holds the rod and allows for rotation. The second C-clamp is a safety incase the vice ever lets go. 20130603_203957.jpgComment
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