Stiletto Race Prep

[Flying Scotsman]

Darin, another point I think it was really smart to not include a radio...spend more money on the whole boat and bring it in still at an attractive price point and sell some Spectrum radios...result more cash to the LHS and a quality radio to the end user and for seasoned boaters let them use their own radio.

Douggie

[Darin Jordan]

Hey guys... I FINALLY got some video of my boat in action. Did some testing after the race this weekend, and had my buddy, Byron Pimms, film a few laps.

Boat here is setup with an Octura X440/3, backcut about .030" and pitched up slightly. Batteries are ThunderPower 45C 4400mah 4S1P placed all the way forward. I added an additional 1oz of lead up in the nose of the cowl.

After this run, the motor temp was 108-degrees, as were the batteries. Used about 2200mah.

http://www.banzaihydrosports.com/video/ProBoat_Stiletto_Test_Run_Aug_29_2010.wmv

Boat is still running a little nose-high for my taste, so I'm working on slowly getting the setup where I like it.

[Deserthobbies]

Stiletto

Nice vid Darin, That looked like quite a few laps to only use 2200mah of your battery but thats a good thing lol. when you get it setup can you give us some top speed readings. thanks again for the vid sweet looking boat.

Nice to see it stayed right side up in the first lap spinout,

[Flying Scotsman]

Darin, I have a Y537/3 and thought of sticking that puppy on....any comments?

Douggie

[Darin Jordan]

Darin, I have a Y537/3 and thought of sticking that puppy on....any comments?

Douggie

Douggie,

I have the same prop, both stock, and one that is radically tweaked, that I was going to try. Might be interesting. I'm worried that the diameter will be getting a little too small, but I would certainly try it. I'm going to.

We've been running 2-blades for a couple of years now. I just thought it was time to go back to playing with 3-blades again. Seemed to help in the turns, which is an important part of the race with a tunnel...

[monarch]

Hi
Being a newbie am very interested in all the great work you have done on this boat and thanks for sharing it all with us.
Can someone please tell me the OD of the new brass tube fitted or the wall thickness.
Keep up all the great work, will be ordering One soon.
Monarch

[Darin Jordan]

Hi
Being a newbie am very interested in all the great work you have done on this boat and thanks for sharing it all with us.
Can someone please tell me the OD of the new brass tube fitted or the wall thickness.
Keep up all the great work, will be ordering One soon.
Monarch

I can't recall exactly, but will look when I get home. That modification has made a VERY positive difference in the lower unit. WAY easier to keep lubed, and about as friction free as it gets. Seems to be holding up well too...

[ron1950]

speeds

darin what kind of speeds are u getting now that u have had some time to do your thing? looks like strightaway speeds are really fast

[JimClark]

Clearly looks faster than the time I saw it in July

[Flying Scotsman]

I just picked mine up, for an almost RTR boat well done Darin. I will do the mods you suggest. The hull looks rock solid and I love the scale motor look. Also very well packaged

A happy Douggie

[simo71]

How many Poles does the motor have? 4? 6?

[vasy]

How many Poles does the motor have? 4? 6?

I though it was 2.

[Darin Jordan]

I though it was 2.

It's a 6-pole motor... The KV actually measures around 1880KV, as opposed to 1800. More RPMs, less torque, than a Geico motor = needs smaller prop with less pitch.

[GP73]

Hey Darin,

Could you elaborate on "smaller'? Smaller than a X440? Or a X640/X642? Have you done any more testing by any chance?

I was running with a X438 and X440, just B&S (and not the best job), I didn't see any noticeable difference between the 2, probably because of the very small difference in diameter.

But it did seem to me that the X438 runs a little hotter.

I've tried the stock prop as well and it looks slightly quicker than the above, I might try to de-tongue it and see what happens.


So many things to do and never enough time.

[Darin Jordan]

I mean smaller as in both diameter, and pitch, compared to the BJ26 motors.

Too small, however, and it may cause the boat to not have enough lift/thrust, etc., and might not run as freely.

Like I've said before, I've had good luck with the 440/3 and with the 42x55. Still lots of playing around to do before I figure out exactly what I like on her... The 440/3 had been pitched up slightly as well...