What props for Titan 29"?

[Make-a-Wake]

The 180A Seaking ESC is arrived and in the following days I will rebuild the boat, then I will get the pics of the transom etc.

I'm very tempted to try a 3 blades prop, Is the OCTURA V942 a prop that can be used on my setup? I found it here in Italy sharpened and balanced.
http://cgi.ebay.it/ELICA-TRIPALA-IN-...3#ht_500wt_922

The V series props are lifters for riggers and hydros............

[Bigbore]

The V series props are lifters for riggers and hydros............

what does that mean? lifters of what?

[egneg]

what does that mean? lifters of what?

They are made to lift the back of the boat up off the water.

[Bigbore]

Things are getting better

Yesterday I have tried the 180A ESC for the first time.
This was the setup with my Titan 29:

Motor: Leopard 4074 2000Kv on 5S
ESC: Hobbywing Seaking 180A
Timing: 15°
Prop: 437/3
COG@ 32%
First run of 3 minutes: Motor temp= 34°C = 93°F and ESC temp= 36°C = 97°F
Second run of 5 minutes: Motor temp= 36°C = 97°F and ESC temp= 40°C = 104°F

Top speed: 74,5Km/h = 46,3mph
I have gained 6mph with the 437/3 prop

Then these are the pics:

[rearwheelin]

All looks good .....You can gain a few miles mph by triming up the rudder, it looks really long also your turn fins look thick and would add a little xtra drag too..

[Alexgar]

I have a x442 on my df29 and was thinking of trying a x445 but that's on a t180

[Old Sloppy]

This was the setup with my Titan 29

How long is that stinger ?



Harry

[Bigbore]

The stinger is 82mm long = 3,22" and is this one for 3/16" Propeller shafts:
http://www.offshoreelectrics.com/pro...os-stinger-str

How long should the rudder be for a 29" mono?

The last days I have tested the following configs:

Prop: X440
Motor: Leopard 4074 2000Kv on 5S
ESC: Hobbywing Seaking 180A
Timing: 15°
COG: 30%
Vmax= 66Km/h = 41mph
I have lost the temp recording but temps was low and I will try agai this prop

with the Prop 437/3 and COG @ 30% I had:
Run time: 7.00 min
ESC Temp: 53°C = 127°F
Motor Temp:46°C = 114°F
Vmax= 76Km/h = 47mph
IT'S THE FASTEST SO FAR

Then with Prop X640 and COG @ 30% I had:
1st Run time: 1.00 min
ESC Temp:40°C = 104°F
Motor Temp:38°C = 100°F

2nd Run time: 2.00 min
ESC Temp:49°C = 120°F
Motor Temp:45°C = 113°F
Vmax= 75,5Km/h = 47mph
This setup seems like the one with the 437/3 prop. Any suggestion on why?

[Old Sloppy]

The tempatures suggest your motor and your ESC like the x640 prop best.
You may find the x437/3 may be the fastest , but the temps are lower with the x640.

Harry

[Bigbore]

The tempatures suggest your motor and your ESC like the x640 prop best.
You may find the x437/3 may be the fastest , but the temps are lower with the x640.

Harry

Previously, I think the temps was lower with X640 because I have tried the 437/3 for 7 minutes until LVC and only for 2 minutes with X640.

This morning I have tried the following with the COG@ 30% and the prop X640:

1st Run time: 3.00 min
ESC Temp:48°C = 118°F
Motor Temp:42°C = 107°F

2nd Run time: 4.00 min
ESC Temp:53°C = 127°F
Motor Temp:45°C = 113°F
Vmax= 76,1Km/h = 47mph

Also the stock 4mm bullets of the Leopard motor got too hot and I will change them for the 5mm type.
Then the feeling that I have is the boat is faster with X640 then with 437/3 but the GPS do not agree
I will try both X640 and 437/3 again to decide what I like the most

[Old Sloppy]

The next prop size is a x642, I think you will see the increase in speed.....

Harry

[rearwheelin]

I would try the same props after you change your bullets. I think you picked up speed after you re-done some of your solders. Also you will be way better off using a propane torche rather then a solder gun for large bullets and 10 guage wire........I would go with even larger bullets like 6-8mm.....Were your batts are parreleld i would heat that up with a torche too ! Get the torche , its the only way for me..... I knew your boats electrical was restricted....

[Bigbore]

I have a propane torche but I have never tried to use it for electrical soldering. Don't it burn the wire insulation sheat?

[rearwheelin]

I have a propane torche but I have never tried to use it for electrical soldering. Don't it burn the wire insulation sheat?

It will hardly hurt the insulation. Stretch insulation back a hair, you may get a little white chaar on surface of insulation but it will wipe off. I bet you allready have pleanty of solder on you conections, hit them with the torche to make them better.....you will see !