MHZ FOUNTAIN and CASTLE 1717 1580kV

[Alfa Spirit]

Here is the MHZ Fountain

[Make-a-Wake]

Wonder if an x442 will be a good prop choice for my 40" Vee with the 1717 on 6s..........???

At least a starting point....................

[Brushless55]

Wonder if an x442 will be a good prop choice for my 40" Vee with the 1717 on 6s..........???

At least a starting point....................

I think bigger?
I have the stock S225 on my Outlaw that I will keep on it when I try my 1717 on 5s and 6s

[Make-a-Wake]

Maybe so................i was wanting to start on the small side..........check temps etc.............and work up. It may well end up being a 445, 447 or s225............thanks.

[Brushless55]

I hope to be able to go upto a S230 and possibly a S235

[Alfa Spirit]

DISAR build a MHZ Racemaster, his hull is 1 meter long like the Fountain. A Castle 1717 on 6S will give too much RPM, I think 5S will be ok, around 30000RPM, 5S 2P (parallel) should be a nice setup

[Alfa Spirit]

What do you think about this hardware, lenght is 9cm ( 3,6"), is it enough for a 39" hull?
This hardware is expensive, If you have links to cheaper hardware that' s great

[DISAR]

The prop distance behind the hull is one big question. normally is 10%, but when I asked MHZ for the racemaster they said 55mm which is quite small I believe. I have it at 85mm and I use the eco trimax but I think that the speedmaster stinger is far better. I recommend the speedmaster stinger, very good quality, 83mm length and cheaper. 3/16 flex, teflon and 9/32" tube. the teflon just fits in the stinger very nicely.

If you want longer distance you can install a distance piece on the transom or elongate the stinger, but need to find out how ...

[Make-a-Wake]

I guess the 442 was too small, took my first run with my 40" fountain with the 1717 on 6s. Ran very well.............not a huge speed difference from the Feigao 580L but definately faster.............the thing is though, the 580L would come in at 125*, and the ESC fairly warm too. This motor came in after a 3 minute run at 78*..........yep...........78*. ESC was 83* and caps 89*, its a Seaking 180. This big boy wasnt even loaded up and i imagine that loading it would wake it up. I think the s230 mentioned by Brushless55 would be a good fit...........that or an Octura x447. I'll play with it.................

[Rumdog]

That motor will spin a MUCH bigger prop!
Good luck with the Seaking on 6s though.

[Brushless55]

I guess the 442 was too small, took my first run with my 40" fountain with the 1717 on 6s. Ran very well.............not a huge speed difference from the Feigao 580L but definately faster.............the thing is though, the 580L would come in at 125*, and the ESC fairly warm too. This motor came in after a 3 minute run at 78*..........yep...........78*. ESC was 83* and caps 89*, its a Seaking 180. This big boy wasnt even loaded up and i imagine that loading it would wake it up. I think the s230 mentioned by Brushless55 would be a good fit...........that or an Octura x447. I'll play with it.................

Bam!
this is very awesome, another great run on the 1717!
let us know how the S230 or the X447 run. I will buy a prop for my OSE Brothers Outlaw after you run yours

do you have a cooling jacket on your 1717?

[Make-a-Wake]

Bam!
this is very awesome, another great run on the 1717!
let us know how the S230 or the X447 run. I will buy a prop for my OSE Brothers Outlaw after you run yours

do you have a cooling jacket on your 1717?

[Brushless55]

what motor mount do you have?
I am having Peter make a mount for me, but I'm not sure that jacket will fit?
and what do you guess your speed to be on the run?

[Rumdog]

Steve has jackets in stock now!

[chummer]

Steve has jackets in stock now!

Outta stock by morning I bet!