Cozy F1 Tunnel - wood build

[Dirk Jan]

The temperature is finally rising here, and I'm now painting the hull. Here's a sneak preview :)

Next Saturday I will join a big rc boat meeting here in the Netherlands, so I have a deadline :)

[studioRS]

Very nice Dirk! I like the paint design so far. Good luck on the final result. Please post up lots of photos of the RC boat event in NL.
Cheers, Thompson

[Dirk Jan]

Thanks Thompson :)

I made some progress with the paint job. The paint is almost finished. The mid section of the hull (white part) has to be painted still. Also the cockpit window and some details.



I made a template for the cockpit window from some thick paper. Just put it on the cowl and mark the outline. Then masking it with some fine line tape.

[Dirk Jan]

I painted the mid section of the hull. In these pictures, the real color shows better.



The window is painted on:





Painted a black stripe between the two colors:



Next update the hull will have the decals on it.

[Dirk Jan]

The paint job and decals are finished! I made the decals myself with decal paper. I used this decal paper on my son's bike before with good results.

I just need to apply some clear coats of varnish and then I can hit the water again

Sorry again for the photo quality; my phone shows the colours not as bright as they actually are (see post before). Better pics will follow when I'm going to drive my Cozy F1 again.

[studioRS]

Awesome! Love the decals, this will look great on the water.

The boat stand is very nice too.
Cheers, Thompson

[Tamelesstgr]

Scratch built and absolutely beautiful!! I wish I had the time or patience for that.

[Dirk Jan]

Thanks!

@ Thompson: The boat stand took me some hours, but it came out good. It locks the hull in place so it cannot fall off during transport. I still have to add some ropes so I can carry the boat easily.

@ tamelesstgr, it took me about 2 years to build this boat, including some breaks because my busy schedule. Patience is the key to success I guess :)

[studioRS]

Thanks Thompson! The boat stand took me some hours, but it came out good. It locks the hull in place so it cannot fall off during transport. I still have to add some ropes so I can carry the boat easily.

Ahhaa! That is what the extra pieces of doubled up plywood are for, clever you. I even see your pencil mark indicating the holes to be drilled for the line. I'll make a suggestion, use sailing line, this will look so cool.
Cheers, Thompson

[Dirk Jan]

Good idea Thompson, I will have a look if I can find these lines somewhere close.

Last couple of days I ran my Cozy F1 a couple of times. The first time with it's colours :)



Yesterday it was pretty windy. The hull runs very loose in these conditions, which looks very cool This morning the water was almost flat and the hull then runs more 'tame'. I measured a top speed this morning of 33.5 mph

A short movie of this morning:

https://www.youtube.com/watch?v=iwprbwFo7n0

[Dirk Jan]

Plans are available online: http://www.rumrunnerracing.com/plans.html

Scroll to the bottom of the page and you will find them :)

[Dirk Jan]

Kick to this topic :)

Last summer I bought 2 different motors and another prop to try some different setups. First I switched the 3000kV outrunner with a 3200kV outrunner for a little higher rpm and it has more output: 500W against 400W for the 3000 kV motor.





The other motor is a 2800kV water cooled outrunner that I want to try with the 35mm prop shown.

The 3200kV motor does improve the performance of the Cozy F1, but it is not a huge difference. Top speed is around 34mph.

[Dirk Jan]

...But after only 2 runs with this motor I crashed the Cozy F1 and damaged both sponson tips. I removed the shattered tips and reconstructed them:

[Dirk Jan]

Yesterday it was time to run the Cozy F1 again for the first time after the repair. It was very windy yesterday, not perfect for this little hull. I had to be gentle on the throttle, but still I flipped the hull twice. First time it rolled back on its sponsons, but the second time I had to rescue it.

The top speed was 54.4 km/h / 34mph. I will try the other motor/prop combo soon.

[grsboats]

Great building and you must be proud of your boat..awesome looking on water..congrats.Gill