Another Insane FE30 - Rick's

[rickwess]

This just arrived yesterday. Full CF inlay in the bottom portion of the hull, including the nose and sponsons. Build quality is what you'd expect from Jeff...........insane. He was supposed to reinforce the turn fin area with 1/4" aluminum so I could tap the mounting holes, but it never happened. Now I'll have to rethink how to keep the turn fin easily adjustable without using the supplied wood screws as I was planning on 2 part foaming the sponsons.

I can't say I'm in love with the turbine cowl shape. I'm sure I need it, but it looks different (i.e larger) in real life. It'll grow on me. On the positive side, it does provide more than enough clearance for a 40xx motor as well as 2 part foam for flotation.

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[rickwess]

Some build details:

• Motor: TP4050 2200kv
• ESC: SF 220A Pro+
• Battery: 4s2p
• Hardware: Insane strut/rubber combo and turn fin
• Motor Mount: Working with Dave @ HRC on a flat bottom rail style mount with rear support.

[properchopper]

Rick,

Before anyone gets the wrong impression from your comments, I'm going to jump in and provide a few counterpoints.

Insane knows how to build hulls. So do I, having built several dozen FE30's for a worldwide clientele.

The ply backing for the turnfin mount is all you'll need. The turnfin is made to kick up in worst case scenarios. Past that, it's better to have the mounting bracket pull out rather than rip out a metal backing plate.

The bottom, especially with the extra CF inlay isn't "too bouncy". The only reason I use a ply motor bed is that the stock one-piece Insane motor mount only anchors the front motor endbell so I go the extra mile with the ply. If you're using a front + rear motor mount there's no flex that will cause misalignment of the motor to flex.

These boats are pure hard-core race hulls and adding extra reinforcing (and weight) is just unnessesary. I've run my P-Sport into a bank at full speed. I pulled it out, washed off the mud and kept racing.

If you want to add these extras it's your prerogative and if you enjoy doing it that's fine, but giving the impression on an open forum that it's to correct oversights in the design ( as in claiming the bottom is "too bouncy") isn't helpful.

[rickwess]

Rick,

Before anyone gets the wrong impression from your comments, I'm going to jump in and provide a few counterpoints.

Insane knows how to build hulls. So do I, having built several dozen FE30's for a worldwide clientele.

The ply backing for the turnfin mount is all you'll need. The turnfin is made to kick up in worst case scenarios. Past that, it's better to have the mounting bracket pull out rather than rip out a metal backing plate.

The bottom, especially with the extra CF inlay isn't "too bouncy". The only reason I use a ply motor bed is that the stock one-piece Insane motor mount only anchors the front motor endbell so I go the extra mile with the ply. If you're using a front + rear motor mount there's no flex that will cause misalignment of the motor to flex.

These boats are pure hard-core race hulls and adding extra reinforcing (and weight) is just unnessesary. I've run my P-Sport into a bank at full speed. I pulled it out, washed off the mud and kept racing.

If you want to add these extras it's your prerogative and if you enjoy doing it that's fine, but giving the impression on an open forum that it's to correct oversights in the design ( as in claiming the bottom is "too bouncy") isn't helpful.

My comments weren't meant to criticize anything, just my personal preferences. I have edited my first post above to state such. I do recall however yourself using the word "trampoline" in one of your build threads.

I overkill most things I build. I don't race, so I can afford that luxury. Whether I need an aluminum plate bracing the turn fin wasn't really the question. It was what I paid extra for.

I'll see how things go as the build progresses as what I add and what I don't add.

[properchopper]

I do recall however yourself using the word "trampoline" in one of your build threads.

Correct. Only it wasn't referring to the FE30. It was race-prepping a Motley Crew :

"Epoxied lightweight aluminum angle rails to stiffen floor. Did the trick-no more trampoline floor."

[rickwess]

No, it was the FE30

2014-04-14 19_10_40-Keith Bradley Boats Forum • View topic - Stuffing tube installation my.jpg

http://www.kbbforums.com/stuffing-tube-installation-mysteries-declassified-t227.html#p1801

[rickwess]

Dave @ HRC sent me some pics of the completed motor mount. It's production unit #1. I had the TP4050 shipped to him so he prototype on the actual motor.

If you're looking for a motor mount for a flat bottom, give him a shout.

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[Brushless55]

how's the build coming along?

[rickwess]

In a word...........slow. Work is getting in the way and I've been on the road for the last 4 weeks.

The motor mount is in transit so I should see it this week. When it does I'll also get the proper sized water jacket for my Insane 34 mono so I'll first get that boat all buttoned up.

I did manage to bond the aluminum backing plate for the turn fin over the weekend. There was precious little space to work in for my fat fingers. I'm not doing this for strength. I plan on foaming the sponsons so I wanted a machine screws to secure the turn fin bracket versus the supplied wood screws. With the foam, through bolting and using a nyloc nut wasn't an option.

[Fella1340]

I would much prefer using machine screws into a tapped hole as well, I plan on doing the same for a whip sport 40 I will be building. I can see why you would have preferred it installed at the factory, glad you got it sorted out to your liking

[rickwess]

Some progress over the past week.

Boned a 1/4" aluminum plate so I could use machine screws to mount the turn fin bracket.
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A question. The directions for the turn fin say to attach it on the inside of the bracket. It seems intuitive to attach it on the outside as pictured. How much of a difference does it make?


I plan on foaming the sponsons, so the first step was to epoxy in some mount blocks.
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Next was to to epoxy in the bulkheads.
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[rickwess]

Two part, 2lb density, foam in the sponsons. Each sponson was a 45g pour.
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All cleaned up and ready to be covered with CF cloth.
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[rickwess]

The sponson bulkheads covered with CF cloth.
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[srislash]

Very good sir. Good application with the foam and bulkheads. Do these need any weight in the nose?
I ask because I have a couple Buds, one running and one waiting for a 'proper' build.

[rickwess]

Do these need any weight in the nose?
I ask because I have a couple Buds, one running and one waiting for a 'proper' build.

I don't think so. From my research of all the builds on this site, no one has mentioned it. I asked Tony about the CoG and no mention either. His advice was "place the motor so the CG is at the tip of the fin - or where the tub heads to the sponsons".