Best prop...

[Captain Tom]

I just put together a Titan 29. It has a UL-1 motor, Hitec HS-615MG servo. I was using a Grim Racer 40/52/3 prop...slow start.
Changed over to a stock Revolt30 2 blade prop...faster but I am sure it could be better. Any suggestions on what prop would be the correct fit for my Titan? Thanx...

[sanyijr]

Cptn Tom,

What esc you running? 4S power? Anything getting hot with 3 blade? Is it cavitating out of the hole? How is it once on plane? Is your esc set at "slow start"?

I am wondering if your setup might be a bit off... Do you have a pic of the hardware hull relationship? But in any case, do you have other props in your posession? say a X640 or X642 or Grimm 42X55 maybe.... Alot depends on running condition/temps as is. Which depends on setup...and so on.

But a 40-52 seems a but a the low side for pitch... Would you mind stating with the setup info and maybe the temps after a 2-3 minute run?

Last thing you want to do is over prop and

and again, any pics would be great!

Sean

[Captain Tom]

The stock UL-1 60 amp ESC. 2 x 4000mAh 25c batts in series. Batts get warm...motor ok. Pics are available. The Titan was built for racing, bought from the former owner.
I do not think the ESC is progammable. Once the boat is up on plane it's fast and handles very well. Takes a few seconds for that though.

IMG_0544.jpgIMG_0545.jpgIMG_0546.jpgIMG_0547.jpgIMG_0550.jpg

[sanyijr]

Tom,

Is that where you run with the battery placement. Seems very front heavy. Where is your cg on this?

If all is running pretty cool, seems like you have some flexibility.... a 40mm prop is a bit small, but I question the esc's capacity for more juice... If esc is pretty cool, I would go to a X442 maybe? Or a Grimm 42x55? I am guessing you don't have others on hand... It's worth purchasing a few in slightly differnt ranges...

I don't have direct experience with this combo, so maybe some other that do or have had experience will chime in...

One other idea - contact seller and see what was run in it.

[Captain Tom]

No, they were just there. I will not leave them there, I am waiting for batt trays to mount them. I have to buy a few props to see what fits best for my application. Thanx
for your input, appreciate it. GOG, not sure yet, still playing with parts. I am waiting for a Traxxas waterproof box for my receiver.

[dana]

You could try x444 from tfl

[dana]

Or x442

[Make-a-Wake]

x442

[Captain Tom]

I plan on racing the Titan on the 9th of Sept. So a great racing prop would be in order.

[Old Sloppy]

x637 ?

or x640......

Harry

[Captain Tom]

Either one of these props wouldn't be too much for the UL-1 motor and 60 amp esc?

[Make-a-Wake]

Either one of these props wouldn't be too much for the UL-1 motor and 60 amp esc?

They'll be awful close to maxxing out that 60a ESC, I would get a Turnigy 120a for 49 bucks on hobbyking, I just dont like running without any headroom. The T120 is also a 6s ESC, so you will be running it well back of its max specs on amperage and cells................it'll run nice and cool!

[jcald2000]

42x55 is the choice of racers around here, keeps the motor in the sweet spot.

[Captain Tom]

Thanx for all the help...

[madmikepags]

where will you be racing on the 9th? The ul-1 motor is not great for the titan 29 (unless u have a gear reduction) this hull likes props in the 42-47mm range. The motor on Mot Crew boat runs great in that hull with the 60amp speedo and a x442-642 prop, my daughter ran this setup at the P-shootout in Mi and the boat was very fast. Just so you know good batteries will make as much difference as a prop selection, I ran older hyperion 45c 4200's and newer Turnigy Nanotec 4000 45c's and the newer turnigys added at least 3-4mph. I have been running the UL-1 motor in My titan 29 for 2 years but i'm running a gear drive and run a x450 with LOTS of cup. A x440-x442 will be a good setup but are you racing sprint (6 laps) or offshore (4 minutes) BIG DIFFERENCE in setup.

[Captain Tom]

Will be racing at Brick Pond, in Elimra, NY...6 lap races. I will be running my UL-1 built by Darin Jordan. I have a Nemesis 9XL for the Titan now. Thanx for your info.

[madmikepags]

9XL in the titan 29 would use a 447-450

[Captain Tom]

...and what brand prop would that be? I haven't familiarized myself yet with all the prop numbers & letters. Thanx

[Old Sloppy]

...and what brand prop would that be? Thanx

that would be "Octura" brand.

Harry
from Atlanta

[Captain Tom]

Thanx...

[Captain Tom]

M or X...2 or 3 blade?

[highflyerbill]

No m447 just X447 or X447/3 I think OSE has prop charts on there web site ,

[ray schrauwen]

[QUOTE]

The stock UL-1 60 amp ESC. 2 x 4000mAh 25c batts in series. Batts get warm...motor ok. Pics are available. The Titan was built for racing, bought from the former owner.
I do not think the ESC is progammable. Once the boat is up on plane it's fast and handles very well. Takes a few seconds for that though.

Try some 35 or 40C batts to bring the temps down on batts, maybe 4500's to 5800's also...

[Make-a-Wake]

If anyone else has noticed, if you buy Zippy/Turnigy Lipos at Hobby King for Sport running, the 40c batts are often less than the 30-35c possibly due to folks not really looking at the 40c's thinking they are more $$. There are cases where the 40c's are literally cheaper than the 35c's.

[Old Sloppy]

M or X...2 or 3 blade?

The "X" props have more low speed grip, for fast take off with slightly less top speed.

The "Y" props have 10% more pitch than "X" props, but are otherwise similar to "X" props.

The "M" props have less low speed grip, slower take off but more top speed.

The "V" props slip like crazy during take off, but yield maximum top speed. (most boaters stay away from this series)

The 2 blade props slip more on take off, then have higher top speeds. (in general)

The 3 blade props slip less on take off, then have slightly less top speeds. (in general)

I will mention certian setups will act differently.( so testing on your boat is required)

Harry
from Atlanta

[highflyerbill]

Old sloppy I don't mean to step on you ,but how do you get 370HP with the battery packs available today . Or is it just 3.70HP.

[dana]

In my experience with my df26, the x440/3 has more top speed than the x440/2. ALOT of people on here say two blades are faster than 3 but I have always found the opposite. I suppose it depends on the boat tho....

[Make-a-Wake]

A set of 5000mah 40c's would give you 200 constant amp output as opposed to the 100a constant you have now.

You may also consider detongueing an x442 to make an m442 out of it..............

[dana]

I wish octura made a wider range of props. For example, a x640/3

[RandyatBBY]

I wish octura made a wider range of props. For example, a x640/3

Make your own. I did it, I have a gig that I take two props, cut and silversolder to make a three blade out of. I did it with the OM21 back in the day when it was the big winner in N2.

Also a three blade prop on a Mono will always ride smoother.