2017 Build Log - Jet Chopper 30 Hull

[Tamelesstgr]

Hey Gang, been saving up parts and finally got the Jet Chopper 30 hull in from Leo. Excited to do my first hull up build with a CF inlay.

Specs:
SSS3674 Brushless 2075kv motor running on 4S
Turnigy V2 180 Amp esc
TFL Running Gear (Trim Tabs, Turn Fins, Rudder, Servo Mount)
Speedmaster Stinger for 3/16 Cable
Reusing some items from the ProBoat Shockwave 26

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[Tamelesstgr]

Some additional Hull Pics:

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[Tamelesstgr]

First questions are regarding the reinforcement of the seams. I will be doing a CF inlay, but was curious if I should run some CF into the bow and reinforce the seam all the way to the nose? I assume I should do that first, then a little it of Epoxy in the nose, then my 2-part flotation goes in before the final main compartment inlay is completed?

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Second question, what can I use for filling in the pin holes on the outside of the seam? Epoxy and micro-balloons?

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[Tamelesstgr]

Recieved my motor mount yesterday and it won't fit the 3674 SSS motor with the stock jacket. I think a few relocated holes and I can get it to work. I started sanding the inside of the seam and floor in preparation for the CF inlay. Went with 150 grit paper, but I am going to go coarser. I hope that will help flatten the floor so the inlay looks good when cured and it should give plenty of grip for the epoxy. Cutting out a template for the inlay and I need to get some 1/4" wide masking tape before cutting the CF cloth.

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[srislash]

First questions are regarding the reinforcement of the seams. I will be doing a CF inlay, but was curious if I should run some CF into the bow and reinforce the seam all the way to the nose? I assume I should do that first, then a little it of Epoxy in the nose, then my 2-part flotation goes in before the final main compartment inlay is completed?

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Second question, what can I use for filling in the pin holes on the outside of the seam? Epoxy and micro-balloons?

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I use glazing putty(Walmart) to fill any imperfections. As far as the seams I think those are fairly well put together but a spare 2" strip up the nose under the inlay would work well for strengthening. They usually split along the curve up to a couple inches from the nose.
BTW, they usually split from the deck compressing underwater. How much foam were you planning to use? If you get it to support the deck it would help.

[Tamelesstgr]

Undecided on if I will use the 2-part expanding foam or pool noodles.

[fweasel]

no foam for me. resin in the nose, pool noodles in the voids.

[Tamelesstgr]

Some work on the stringer install and layout. Would like to have the battery tray centered in the hull so I can run (1) 4s pack or (2) 2s packs. Took more sanding than I thought it would to knock down the fiberglass and clean up the seams from the bow to transom. I think I'm ready to do the front seams first though. Then do the floor inlay and wrap that up the sides. Then I'll eopxy in place the transom doubler I cut out of CF sheet.

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[Tamelesstgr]

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[Tamelesstgr]

Had some time last night so I went for it on the CF inlay. Using the tape method, it was much easier to keep the fibers from fraying and going all over the place. Read Keith Bradley's tutorial for that! I laid down some epoxy first, then folded the inlay in 1/3rds and positioned it. I'm a little disappointed that I did not get it as straight as I would have liked, but I got up into the seam area on both sides, so that is good. I lot of the inlay will get covered up anyway. I need to finish the front seams and epoxy the nose.

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[srislash]

Looks good now you have a nice fresh Matt to attach mounts/etc to.. Good job!

[785boats]

Looks good to me.
Your build has almost inspired me to drag my hull out &start building it. Although I won't be putting a carbon inlay into it.
Keep up the good work.

[Tamelesstgr]

Cut up some thin carbon strips and epoxied those slightly overlapping the large inlay forward to the nose. Once that was cured I dropped about 20ml of epoxy in the nose itself and let that cure. Next I set the transom doubler in and epoxied that in place with some BSI mid-cure.

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I've been going back and forth on whether or not I would use transom pickups like on my 32 Deep-V, so I decided that I would try the rudder pickup on this boat and I drilled out a hole for a second pickup inline with the rudder blade. Always liked this design from the ProBoat Shockwave 26 I had. I actually had twin rudder pickups on that hull.

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[Tamelesstgr]

Can't Decide if I need to build a new motor mount, I am thinking about being able to swap between the AquaCraft 2030kv (3660 Can size) and the SSS 3674. The mount I bought doesn't really work well for either motor, so I guess I answered my own question.

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[Tamelesstgr]

Started working on the trim tabs and turn fins. I think I am going to build a flood tube for this hull as well to be able to adjust the stinger up and down based on prop selection.

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