MHZ FOUNTAIN and CASTLE 1717 1580kV

[Alfa Spirit]

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 ...

Are you talking about this 3/16" Speedmaster Stinger Strut? http://www.offshoreelectrics.com/pro...os-stinger-str

What 3/16" prop shaft and what 3/16" flex shaft work fine with the Speedmaster Stinger?

Thanks

[DISAR]

Alfa yes, this stinger, I believe that you have all the items needed for the shafting.

[Alfa Spirit]

Thank you for your help DISAR, parts are on the way;

The Speedmaster strut for 3/16'' look fine, What about the lenght 82,5mm?

[K.R.Joye]

Not sure if you seen my post on RR this is my current setup with uncooled 1717/1580

40" AM Sprint Cat

Etti HV 200 amp water-cooled ESC

6S1P 30C 4500 Lipo

X450/3 Prop detounged / 53MPH GPS no heat on anything

X452 Prop detounged / 57MPH GPS no heat on anything

I'm likin these motors!

[Gerwin Brommer]

Alfa :

The Speedmaster Stinger is even better than the others.
Why ?
You can adjust not only the angle, but also the HIGHT of the shaft !

Lenght : 10% is not a "rule".
Works well on stepped mono's with a SAW-setup.
For a normal setup/hull you don't necesseraly need 10%

[Alfa Spirit]

The Castle 1717 with his water jacket is a monster, great !!

[Alfa Spirit]

Parts of hardware are on order The flexshaft and the coupler come from Dave Marles, out of stock at OSE

[Make-a-Wake]

Have this hull on the way for my Castle 1717. The old hull wasnt performing to my liking. Gonna run it on 6s............its 39.5".

Question is, which prop? I'm thinking in the x445, x447, x642, x645 range. Any suggestions are very welcome and appreciated!

[Brushless55]

Have this hull on the way for my Castle 1717. The old hull wasnt performing to my liking. Gonna run it on 6s............its 39.5".

Question is, which prop? I'm thinking in the x445, x447, x642, x645 range. Any suggestions are very welcome and appreciated!

Looks like my Thundertiger OBL

[forescott]

I think the x452. Those props are kinda small for a hull that size. I ran the m545 on a castle 2200 with no heat issues. The 1717 will push those props without breaking a sweat!

[Make-a-Wake]

OK...........seems kinda big, but thats why i asked. Thanks!

[Alfa Spirit]

I need help guys, how many rudders for the MHZ Fountain? I think that I will install two rudders for stability, what do you think?

[DISAR]

OK...........seems kinda big, but thats why i asked. Thanks!

If it is the thunder tiger OBL, it can do well with small props as well. I ve seen one with a prather 220 and a 642. Depends on the position of the strut, if it is low small props can work, if it is high you need bigger props.
Depends also on your esc, 225,230,445,645 are definately safe, then if temps-amps are ok bigger ones can be used

[Make-a-Wake]

Thanks DISAR................ got my hull in, got all the parts too.................just gotta pace myself as i tend to wanna rush things a bit and i want this to be as close to perfect as i can get it.

Not trying to hijack your thread alpha..........we both have 39" mono's with 1717 power and i thought id share mine as well.

[Brushless55]

Thanks DISAR................ got my hull in, got all the parts too.................just gotta pace myself as i tend to wanna rush things a bit and i want this to be as close to perfect as i can get it.

Not trying to hijack your thread alpha..........we both have 39" mono's with 1717 power and i thought id share mine as well.

I think yours make for 4 of us building a 39-40" mono with CC1717 power
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