Cozy F1 Tunnel - wood build

[Dirk Jan]

Thanks Gill and yes, I'm quite happy/proud with the result

[Dirk Jan]

This evening I installed the 2800kV outrunner. This motor is twice as heavy as the little outrunner it replaces.

I will try this motor with a Aluminium 35mm prop, shown below together with the brass 33mm prop that comes stock with the HK outboard.



I don't like the looks of this outrunner sticking out above the cover. But I'm curious how this setup performs. This week I will test it.

[Dirk Jan]

This morning I ran my Cozy F1. I already tried the new setup last week with good results, but I had to sharpen the prop still.

This morning I sharpened it and I took 2 lipo's with me; 1 old one and a brand new one. First I ran with the old lipo. The Cozy F1 ran nicely with the hull floating above the water. The top speed was 35.0mph.
The new lipo improved the performance condsiderably; more punch and a top speed of 37.0mph

Some pictures and a video of today:

https://www.youtube.com/watch?v=5_CDCamKho0

[Dirk Jan]

This week I took my chemicals, mold and CF laminate to make a carbon fiber cowl. I waxed the mold one more time and applied a PVA releasing wax on top of that.





I use a 200gr/m2 cf cloth. On top of that I apply a glass cloth of 110gr/m2 to make the surface more smooth. This cowl should become 20% lighter than my glassfiber cowl. I will also make another paint/decal design for this cowl.

[Tamelesstgr]

Man I got to start learning how to build wood boats or do a fiberglass mold, maybe both!

[grsboats]

Nice work!

[Dirk Jan]

Thanks guys :)

Last Saturday I went to a Dutch meeting for 152VO - class boats (www.152vo.de). I took my Cozy F1 as well and my buddy took some action photos:







Old vs new: 1950's Foo Ling You - Utility Flatbottom (152VO class) against the Cozy F1 on the straight:

[RandyatBBY]

Great build, Thanks for sharing I love the contrast of the blue to the yellow.

[lavigna]

Really amazing build. Thanks for taking the time to make the build thread.

[Dirk Jan]

Thank you!

[Ronnie Gilbert]

Do you still share these plans. I would like to have the first version. The ones with chins in the sponsons.

[Ronnie Gilbert]

Do you still share these plans . I would like to get a set of them for what I think was first one that had chine in the sponsons

[Dirk Jan]

Hi Ronnie,

You can find the plans online here:

http://www.rumrunnerracing.com/plans.html

Please scroll down the link and you will find them.

Have fun building it!

[Ronnie Gilbert]

Thanks for your fast response and also for the link to the plans. I don’t think I can do as good a job building but I’ll definitely give it a shot. The build I saw of yours was impressive. Again thanks
Ronnie Gilbert

[y.o.r.k]

Hi Jan,

I found the blueprint of your cozy F1 at Rumrunner Racing.
Congratulations, a really cool project!
Maybe I'll built this one too. I'm actually redrawing the plan in my 3D-Software.
There are two things which I'm not shure how to built them.
Thing 1:
Your ribs for the sponsons differs with the one in your photos.
In the Blueprints there is a recess, I think for a Stringer 5x5mm. Is this correct?
I think it should look like as in my screenshots.

Thing 2:
I don't know how to place the cowl in the correct position.
Where sits the cutting template in relation to the helling (part45).
Would it be possible to get a 3sides-view-drawing with the cowl?

And one more question. Where sits the center of gravitiy?