My 32" Catamaran

[karolpenconek]

Hello. I'm from Poland. I have 32" catamaran powered by Medusa Afterburner 36-80 1100kV and 8S 5000mAh Zippy Li-po (yes, I like HV )

This is my video on X642 prop http://www.youtube.com/watch?v=a98BHqrhQig Run time about 20 minutes on this prop and motor had 40-50 C degres. Weight 2840g. ESC Turnigy Sentilon 100A HV.

Today I will test it on X646 prop

Some photos:


Regards Karol, Poland

[Ub Hauled]

20 mins runtime? Are you paralleling the packs? That is a LOOOOOOOOOOOOOOOOOONG time!

Nice setup it seems to be running well, welcome to the forum.

[karolpenconek]

Hello. Yes, it's about 20 minute run time, not all on full thorttle, but I think on full throtle will be 12-15 minutes.

No, packs are not parallel. Is 2 Zippy Flightmax 5000 4S in series, all 5000mAh 8S.

Now I will test on X646 prop, it will run faster

Regards, Karol, Poland

[ozzie-crawl]

to the forums, nice boat, i must ask are you sure your in poland as the third picture looks a lot like my pond

[karolpenconek]

Hello. Yes, it is in Poland, in Warsaw "Pola Mokotowskie"

Today test on X646 was great, speed is increase, but it have less stability (it must have more weight on left). Movie http://www.youtube.com/watch?v=GJY40BBeLNI

I don't have GPS to measure speed. But I make straight 130m. route. From stand start it make it in 5.9 second (this lake is about 150 m. long, i must have place to brake ), this is about 80 km/h average, i think, is 90-100 km/h maximum speed

But motor and esc do not have more than 50-60 C degrees. It can have propeller with more pitch, not diameter. Or I must buy X648 or bigger and reduce it to 44-45mm diameter. Or I can try 10S li-po

Regards Karol

[jjaj]

I have a 31" cat with the fieago 9T 580L, 2-3cell 4000mah lipos in series, 150 etti esc with athe octura x648 prop. The best run I had was 40 mph (64.37kmh) How are all you guys getting your boats to reach the speeds you ara acheiving. I have tried everything I can think of. Is there a secret to this? LOL

[ozzie-crawl]

do you have pics of your setup, if your running 6s with that motor and prop i would have thought speeds would be a lot higher

[karolpenconek]

I have a 31" cat with the fieago 9T 580L, 2-3cell 4000mah lipos in series, 150 etti esc with athe octura x648 prop. The best run I had was 40 mph (64.37kmh) How are all you guys getting your boats to reach the speeds you ara acheiving. I have tried everything I can think of. Is there a secret to this? LOL

Hello. Is not any secret Is only power and regulation. For me Feigao is not a good motor, I had 5 feigao's, from 380 to 540XL and all of it was too weak for price. What is yout boat weight?

Earlier I have in this boat KB 45 motor 1000KV and on the same prop it draws about 60-80A and was to hot-demagnetised rotor, not 30-40A and 50C. degres. Now my boat is faster with smaller, very good motor and about half of amperage

I like Medusa and Neu motors, medusa is about in half price of Neu and is good enough to ride well. Mabye you can try replace motor for medusa 36-80 1600kV or Neu 1515 2D, 2,5D or 1,5y. Neu will have more torque than medusa (bigger can) and run cooler.

P.S Yesterday I had a little flood in my boat-broken one silicone tube for cooling

Sorry for my English
Regards Karol, Poland

[ozzie-crawl]

his motor shouldnt be the problem unless its faulty, 580l has a lot more torque than the 540 xl

[Ub Hauled]

I have a 31" cat with the fieago 9T 580L, 2-3cell 4000mah lipos in series, 150 etti esc with athe octura x648 prop. The best run I had was 40 mph (64.37kmh) How are all you guys getting your boats to reach the speeds you ara acheiving. I have tried everything I can think of. Is there a secret to this? LOL

Start a thread with pictures so the experts can help you out man, it seems to me you are missing something...

[jjaj]

Thanks guys, Ill get some pics really soon, and hopfully a vid as well. I know there are better motors out there, but I already have around $900.00 in this build. I bought everything a little at a time and it took me about 7 months to finally get it to run. Its just kind of disapointing you know. But Ill try to get some pics tonight.

[sailr]

The medusa dealer in the US doesn't sell anything but the 36-50 motors. I emailed them to let them know they're missin the boat! (pun intended)

[DISAR]

Very fast boat Karol. Is this the Chinese Aparrition cat?

[crabstick]

Karol - Good build, it runs nice and stable, id say its about your estimate, 80-90kmh where did you source the Medusa motor from? can you post a link?

Thanks guys, Ill get some pics really soon, and hopfully a vid as well. I know there are better motors out there, but I already have around $900.00 in this build. I bought everything a little at a time and it took me about 7 months to finally get it to run. Its just kind of disapointing you know. But Ill try to get some pics tonight.

yeah dude start a new thread, I got 53mph from a fiegao 540 8xl in a 33 inch cat on 4s (was my own design) So you should be hitting at least 50mph if not more

[Ub Hauled]

The medusa dealer in the US doesn't sell anything but the 36-50 motors. I emailed them to let them know they're missin the boat! (pun intended)

What is the price difference from a dealer to themselves?

http://www.medusaproducts.com/motors/036-v2.htm

all the way to the bottom, I tried adding it to the cart just to see if it would work... it did, even when they are out of stock (3680/1100)...