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Old Jan 05, 2013, 09:29 AM
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Canada, ON, Ottawa
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That looks sweet.
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Old Jan 05, 2013, 11:11 AM
Allways the hard way!
georgy's Avatar
South Africa, GP, Germiston
Joined Jan 2012
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Helluva nice sport jet... & a delta to boot!

It looks really "PLAN"-able... hint hint!

George
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Old Jan 05, 2013, 02:29 PM
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United States, NJ, Frenchtown
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I worried about the sanding ridges at each glue line. So I bought a blue foam Flotation Billet from a lumber yard. It was 12" X 24" X 96" to start with. I cheated as it was my first foam scratch build. Used the plans frames as the body stations.

The solid body was about 6 hours with 33 grit paper & then 100 grit for final.
I accidentally built 2 left wing panels first.

Hand forming of foam is easy if you have a good set of plans.
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Old Jan 05, 2013, 09:43 PM
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Denver CO
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Quote:
Originally Posted by cyclops2 View Post
I worried about the sanding ridges at each glue line. So I bought a blue foam Flotation Billet from a lumber yard. It was 12" X 24" X 96" to start with. I cheated as it was my first foam scratch build. Used the plans frames as the body stations.

The solid body was about 6 hours with 33 grit paper & then 100 grit for final.
I accidentally built 2 left wing panels first.

Hand forming of foam is easy if you have a good set of plans.
Really nice. I dont think i could carve or build that way, heck im trying my best Not to sand

Trick is using the right glue and sanding it at the right time,so it rolls off sorta. But the plugs have been coming off the bow really nice that helps a lot too.

This build has maybe 2 hr of sanding, tops, to get to glass work, and the way it laid up it wont be much other then another coat with micro balloons to hit mirror finish

of course another 2 hrs of sanding in between
Guess i cant get away from it.
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Old Jan 05, 2013, 09:48 PM
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white lake michigan
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until you get out the magic wand and become a wizard sanding will allways be in a scratch builder's future
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Old Jan 06, 2013, 07:21 AM
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United States, NJ, Frenchtown
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D

You nailed the gluing problem !!
I used epoxy on the China Clipper below. Hull is a bunch of H D 2" thick pieces lengthwise.

What a 6 hour cutting BELOW the surface of every seam line !!!! Then fill it in & final sand. I used my electronic 3" wire side cutter to do the job. I took Ibuprofin after finishing.

After that mistake. I went back to the big blue Styrofoam billets.

Thinking of doing a foam hydroplane.
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Old Jan 08, 2013, 09:02 AM
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some of the boring stuff

should have all the filler primer on this evening.

then there is more sanding in the scehdule

Built lite. Only 1 layer 3/4oz cloth used
Good news is we are gonna meet the goal of 1.5lb empty air frame

Calulating around 3.75lb - AUW

@ 2200w for a screaming 600w per lb!
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Old Jan 08, 2013, 09:16 AM
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cg look ok?
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Old Jan 08, 2013, 06:05 PM
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St.Catharines, Ontario
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should be a good starting point. might be a tad nose heavy, but that's ok too.
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Old Jan 08, 2013, 06:30 PM
Fast Jets for Fast times
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St. Peters MO.
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The Tiger shark looks awesome.
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Old Jan 10, 2013, 10:52 PM
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Denver CO
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Almost there

Finished up the layup and epoxy.
A rudder was added as an after thought,
pocket was made so the servo is not in the exist tunnel
while slits for the control horn protrude the fiberglass
Everything sprayed with a fill primer.


still need to clean up the hatch areas from the build up of epoxy, couldnt resist placing the unit in there for a few shots
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Old Jan 10, 2013, 11:49 PM
RC ADDICT
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United States, MN, Plymouth
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Wow...
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Old Jan 11, 2013, 12:03 AM
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that looks awesome.
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Old Jan 24, 2013, 10:43 AM
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Denver CO
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Some more finished.

We Can throw the 3.75lb AUW out the door

Added weight of
new esc, from *90amp to 120 amp
Larger wiring
Modification and installation of an old fly-fly twin seat F-100 sabre canopy
bigger,metal gear servos
larger connection rods,easy connectors, etc
larger Lipo
some paint

We now sit at just under 4lbs
Man does the weight creep up on you!

Did a poor mans thrust test, seeing 4lb 9oz with no thrust tube *See video I think its funny

Does that sound like a bearing?

Rating M for mature.
I didnt edit anything so there is a bit of cursing

90mm Smartfan thrust test (0 min 52 sec)
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Old Jan 24, 2013, 06:57 PM
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white lake michigan
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Sweet, I like the blue something different for a change
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