Home-made twin .21 catamaran

[Bruiser7000]

Very good

Thanks for posting

 

[gratte-tout]

Thanks!

 

[gratte-tout]

And a little one from my other home designed and home made .61 cat.

http://www.dailymotion.com/Gratte-tout/video/8997538

 

[dannyual767]

Fabrice, the videos of your boats are fantastic! Have you put a GPS in any of your cats to get a speed reading?

I'm still very interested in building one of your boats. Do you think that magazine that you sold the plans to will sell those plans???

Danny

 

[Andy Greene]

Last video guys, I'm quite happy as you may see, it starts to be fast!
http://www.dailymotion.com/video/x5cofa_tw...au-040508_sport

Your getting it close Fabrice- Looks good. Congrats on your hard efforts. B)

This has been a great thread to follow- Thanks for sharing all your progress.

Andy

 

[gratte-tout]

Thanks dannyual767 and Andy.

Danny, of course the plans will be sold, next june the magazine should sell it. And yes for the GPS, the big cat was running @ 80-85 km/h on this video (my best run gave 89 km/h) with a 1455 prop and the twin is @ 70km/h with K48 props. I'm waiting for bigger ones, X448, Y447, S230 to improve it! I also bought 2.1/3 and X455 for the big cat, in fact I would like to be @ 100km/h with it.

Andy, should I understand I have to stop this thread?

I think it's interesting to show you the improvments of this settings, and I would like to show you this home designed hull can be very competitive.

If your are ok with it, I could continue to post some videos of it.

P.S. : i'm still interesting to visit you with my plans in the pocket in Florida, or you could come here to visit us!

 

[dannyual767]

Fabrice, this is a great thread and I really enjoy watching your progress in your videos as your twin cat gets faster and faster.

Your big cat is running 89kph=55mph. I think that is a very respectable speed. 100kph=62mph.

Danny

 

[dannyual767]

I've got a question about your big cat: how much does it weigh? How much does your twin cat weigh?

Danny

 

[gratte-tout]

The .61 is about 13.22 pounds and the twin is 12.12

Both with a full fuel tank.

 

[dannyual767]

The .61 is about 13.22 pounds and the twin is 12.12Both with a full fuel tank.

Thank you for the information, Fabrice .

 

[Dorkhedeos]

Wow, thats freakin awesome.

 

[gratte-tout]

Hi there,

Here is the last video I made, with two X445 props and 30% nitro fuel.

http://fr.youtube.com/watch?v=-ZUDq_DAwuE

Starts to be fast, so fun to run such a boat!! A lot of pleasure even if it was hard to set, it worthed it! Speed is 50 mph.

I tried others props, S230 are little too big, S225 should be better, Y547 are far to big and I didn't try the X448 I also have.

To be continued...

 

[Jim Caldwell]

Hi there,
Here is the last video I made, with two X445 props and 30% nitro fuel.

<a href="http://fr.youtube.com/watch?v=-ZUDq_DAwuE" target="_blank">http://fr.youtube.com/watch?v=-ZUDq_DAwuE</a>

Starts to be fast, so fun to run such a boat!! A lot of pleasure even if it was hard to set, it worthed it! Speed is 50 mph.

I tried others props, S230 are little too big, S225 should be better, Y547 are far to big and I didn't try the X448 I also have.

To be continued...

With 2 props in the water you should be able to run more pitch, say 642 or 645's.

But regardless, that is a work of art!

 

[gratte-tout]

That's the props I wonder try, but I don't have them yet, I'm going to buy some.

I think I will try 2 S225 / 2 X645

 

[topfuel443]

Looks really good Fabrice!! Sounds awesome, it really did turn out nice.

~James

 

[dschigoda]

You did it!!! It has a great sound, and it turns the corners just fine.

Dave

 

[gratte-tout]

That's not finished guys, will try others props, and next step, try to run at 90 km/h with X645 ou X642

 

[JSCARPINO]

Fabrice

You have some awesome talent....

I love to see this kind of effort for the love of a hobby.

Thanks for sharing....

Joe

 

[gratte-tout]

Thanks a lot JSCARPINO !

Last video, testing props I had, Grimracer 45*66 and prather S230. Last one are a little too big, but the grim's are running very well, as better as the X445.

Nice day today, 7 am at the pond, blue and hit water, sunny, but some swimming guys.. enjoy!

http://fr.youtube.com/watch?v=O1UfZ4yHalg

 

[Rigged]

love the sound coming from that thing. Keep it up!