JD Builds a Foam 1/10 Scale 8255

[Jerry Dunlap]

Late spring of last year I build a 1/10 scale ML Boatworks 8255 wood kit, painted it white, and raced it 5 times in ERCU summer events. The BOAT runs fine, but I thought maybe I could build a "Better Mousetrap" from foam. Well, long story short, after 2 1/2 months of building, testing, and modifying ,I ended up just building "Another Mousetrap." A "Mousetrap" that runs fine, but not any better of faster than the ML Boatworks BOAT. However, I enjoy building boats from foam and spending time in my model boat shop.

The sheeting over the foam was mostly 1/32" aircraft plywood. 1/16" was used for the templates that the foam was glued to. I made the exhaust headers from 5/16 OD brass tubing that I pinched slightly to make the end of the stacks a little bit oval in shape rather than round.

JD

 

[TomGracey]

Did it come out any lighter the the ML BW hull

 

[Bill Gibson]

That is VERY cool! Makes me wanna......!

 

[Jerry Dunlap]

Did it come out any lighter the the ML BW hull

No. In fact, it might be a tad heavier.

JD

 

[Jerry Dunlap]

So, I built this foam 1/10 Scale 8255 and I already have a 1/10 Scale BOAT. I emailed David Newton and basically asked, "What is another 8255 version that has very basic graphics?" David's answer, "The 1983 Miss Houston - white hull/blue lettering for graphics." As of today, the 1983 Miss Houston has one of those two requirements - it is painted white.
During the testing phase of the WOF 1/10 Scale encountered a couple of issues. Figuring out the AOA(angle of attack) for the sponsons is somewhat of a crap shoot. It took a couple of trips of the lake and time spent on the belt sander to hit an AOA that seems to work. I have no idea what the AOA is, probably around 7 degrees.
The other problem I was having was a high motor temp(150-160 degrees) after running the boat for about 3 minutes(about the time of a typical 5 lap heat race). I made a water pickup from 5/32" ID brass tube, a brass mounting bracket, and screwed it to the transom over the prop. Motor temp dropped nearly 100 degrees and the water temp was 47 degrees.
At last Saturday's ERCU Board of Directors' meeting, the 1983 Miss Houston passed the technical inspection and all the scale inspection except the graphics(which have been ordered). An ABC 1914 45R seems to be working the best during the initial testing.

JD

 

[Hydro Junkie]

Good looking boat Frog. Are you going to bring it to the HARM Hydro Show, if it's held next month?

 

[Jerry Dunlap]

Good looking boat Frog. Are you going to bring it to the HARM Hydro Show, if it's held next month?

That is the plan. Hopefully, the graphics will arrive prior to the show at HARM.

 

[Bill Gibson]

Would you have any prints I could blow up for templates?? Id love to build one!! What kind of foam did you use....especially for the cowl?? Really looks great!

 

[Jerry Dunlap]

Would you have any prints I could blow up for templates?? Id love to build one!! What kind of foam did you use....especially for the cowl?? Really looks great!

Hi Bill,
Building the WOF Miss Houston was truly a "Scratch Build." I'd take measurements off my BOAT, scratch some lines on pieces of plywood, glue on some foam, shape, scratch more lines, and repeat the process. The foam is blue insulation foam I bought at Lowe's in a 2"X2'X8' piece. I used about 1/2 of the sheet and I'm currently making a 35" Outboard Kneeler with some of the remaining foam.

JD

 

[Bill Gibson]

Hi Bill,
Building the WOF Miss Houston was truly a "Scratch Build." I'd take measurements off my BOAT, scratch some lines on pieces of plywood, glue on some foam, shape, scratch more lines, and repeat the process. The foam is blue insulation foam I bought at Lowe's in a 2"X2'X8' piece. I used about 1/2 of the sheet and I'm currently making a 35" Outboard Kneeler with some of the remaining foam.

JD

Jerry, no problem! Thanks for the info on the foam! I was just thinking....over the years ive built a number of your boats either in the way of Dumas kits or plans....where has the time gone?......jeesh!

 

[Lee Whiteley]

Hi Jerry,

Great looking boat. Look forward to getting together this year and finally getting my feet wet so to speak.

Lee

 

[Jerry Dunlap]

Jerry, no problem! Thanks for the info on the foam! I was just thinking....over the years ive built a number of your boats either in the way of Dumas kits or plans....where has the time gone?......jeesh!

This year will be my 56th designing/building/racing R/C model boats. Still having fun.

JD

 

[Jerry Dunlap]

Hi Jerry,

Great looking boat. Look forward to getting together this year and finally getting my feet wet so to speak.

Lee

Hey Lee,

Give me a call when you have time.

JD

 

[Mike Luszcz]

You sure liking making more work for yourself, haha. Looks good Jerry, as long as you have fun, it doesn't matter! If I had more time, i would still do WOF..Heck, I have not even had time to run a boat in over a year and a half, let alone build myself one

 

[Lee Whiteley]

Hey Mike,

There's a bunch of folks out here that appreciate time spent making wooden kits. Without you we'd be without a valuable resource when it comes to building a rc boat. So with that said THANKS FOR ALL YOUR HARD WORK!!!!

Lee

 

[Mike Luszcz]

Thanks Lee, I need to spend some time and add some more to the list, just hard to keep up these days. Lots of fiberglass shopwork does that to you. Mike

 

[Jerry Dunlap]

The graphics from Mike McKnight have been applied.

JD

 

[TomGracey]

Looking Good JD
My U-8 Executone is just about ready for paint and the graphic's showed up last week

 

[TomGracey]

Is that 1914 45R a raw casting or sharpened thinned & balanced ???

 

[keith warham]

Looks good Jerry