Thoughts on Delta Force 28 cat hull?

[HTVboats]

Hugh,
They are called stumble blocks and are common on outboard tunnels. They don't affect air flow much but keep the hull from nose diving in turns. The inside block on a turn disturbs water against the sponson inner wall which can help with oversteer and hooking. Probably more 'Mental Health" than real effect. You can mess with different sizes shapes and positioning with wood blocks and fastened with servo tape or silicone which I prefer. Pull them off and try different ones till you feel you have affected your turns positively.
Mic

[hughb]

Arhh I see. I like the idea of ingenious, low cost solutions to get an edge in racing

[hughb]

Hull came in recently. Seems to be very nicely made. The hull feels fairly solid and most importantly is square and true-it sits flat on the benchtop with no rocking side to side or corner to opposite corner. I will still do a CF inlay to stiffen the tunnel area, slight flex there.

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Thinking of rudder options...

IMG_5044.JPG

[properchopper]

Hull came in recently. Seems to be very nicely made. The hull feels fairly solid and most importantly is square and true-it sits flat on the benchtop with no rocking side to side or corner to opposite corner. I will still do a CF inlay to stiffen the tunnel area, slight flex there.

[ATTACH=CONFIG]159459[/ATTACH] [ATTACH=CONFIG]159460[/ATTACH]

Thinking of rudder options...

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I have a prop that goes with that rudder :

https://www.youtube.com/watch?v=JgRzweFct0M

[Darin Jordan]

We have one of these in our club and it seemed to scoot along really well.

[Newboater]

I just received my Pathfinder today, haven't had time to open the box yet though.

[Mike W]

Just picked one up to build for my grandson. Interested in any updates please keep them coming!

[Mike W]

Sharp boat! It’ll be hard to hand this one over to my grandson. Completed inlay.

[hughb]

Nice work! Looks like you've done well with the inlay, not too resin rich. The boat looks great in red.

[Mike W]

Getting close now. Bottom blueprinted, driveline in, decals on. Hatch fasteners, radio setup, and some light final assembly are all that remain. Still waiting for the TX to arrive.

[fweasel]

Looks good Mike. I would trim that teflon liner back a bit if you haven't already so it doesn't bind on the collet.

[Mike W]

Thanks Ryan! I will, its just placed there for now awaiting final trimming. I'm going to use the shrink tubing just over the edge method to try to keep it from creeping up this time.

[fweasel]

It's been my experience that anytime you use heat shrink in an area where there's grease, it will eventually just slip off. I've yet to buy any, but I'm told marine heat shrink has adhesive on the inside and sticks where you put it in these non-wiring applications.I've been meaning to get some for a problematic stuffing tube to strut transition on one of my boats.

[Mike W]

I have some of that but not in the correct size. It sticks like crazy and even oozes out the ends when shrinking. Great for boat trailer wiring. Not great if you ever want to remove it.
I think this will work if you hang 3/32” off the end and allow it to shrink/fold over the end. Whoever posted it said it works great and clearances itself from the cable if necessary.
I’ll make a tapered brass ferrule thingie in the drill and epoxy that on before using shrink tubing in front of the strut. Seems like the last place you want to disturb smooth water flow.

[Mxkid261]

I used to use shrink wrap for strut-to-stuffing tube sealing. Couple years ago I switched to Honda Bond or something similar. Haven't used any shrink wrap since.