Stiletto Race Prep

[Ub Hauled]

Darin,
wanna congratulate you (and Proboat) for this fantastic F1... it's about time "the money" talks to people that actually know what they are doing in the FE world. Jerry D. did a good job on the TS boats, but it was a bit "raw" for FE, I think the Stilleto is a great achievement, thank you.

PS: I hope you bring her down to the 2 lap or SAW, whichever one you participate... she looks fast on the video man and it has room for more!

[GP73]

Don't run this boat on 5s It does not need it & was not intended to be run on 5s. As for motor's if you want to keep it 'spec' (I would) then anything up to around the 2080kv maximum. Or you could swap out the ESC to see if it improves the power of the stiletto motor.

Do you race or intend too?

I don't race, but I don't exclude it in the future.

I have an Aquastar 90 ESC and I could try that on 5s.

Are you saying that stock spec on 5s I would fry it?

[Doby]

If you do race in the future, it won't be on 5S,,only 4S...so if you plan to race, set it up properly on 4S, learn to drive it properly and you'll be set when you want to compete.

[Darin Jordan]

I don't race, but I don't exclude it in the future.

I have an Aquastar 90 ESC and I could try that on 5s.

Are you saying that stock spec on 5s I would fry it?

I'm not sure the motor would hold up long under 5S, would be my main concern.

This motor actually turned out hotter than was originally thought... It test at 1885KV or so, unloaded... so you are looking at around 31,000RPM on 4S. That's already pretty hot.

If you want to go to 5S, which I believe people have done with PB ESCs, then I'd suggest you put in a BJ26 motor instead. You'll get the higher RPMs, but also will benefit from a motor that already has a little more mass and more torque.

[GP73]

Thanks!

I'm going to try a 1500Kv on 5s, if you see smoke call the firefighters!

[ron1950]

ok i know we have gone over this but too lazy to re read 4 pages......first time water was decent for a few weeks so took out the stiletto with a new prop grim 42/55.... slower then the stock prop as i recall.....i have a 642 is that too much or too little prop for this boat>>> the mg ran outstanding on a chuck prepared 642....give me some suggestions pls ...i dont want to burn it up just go fast as mg does.....the wires after 4 min were warm but not anywhere near hot at all seems this motor doesent like this prop at all......oh ya hitting a fish or turtle and knocking the motor angle all the way back didnt help i guess after 3 min or so....
has anyone tryed the prather 225? was wondering if its too much or what?????maybe i should just get my 440/3 cut like darins (.030 and cupped and so forth.) hmmmmmm

[Darin Jordan]

ok i know we have gone over this but too lazy to re read 4 pages......first time water was decent for a few weeks so took out the stiletto with a new prop grim 42/55.... slower then the stock prop as i recall.....i have a 642 is that too much or too little prop for this boat>>> the mg ran outstanding on a chuck prepared 642....give me some suggestions pls ...i dont want to burn it up just go fast as mg does.....the wires after 4 min were warm but not anywhere near hot at all seems this motor doesent like this prop at all......oh ya hitting a fish or turtle and knocking the motor angle all the way back didnt help i guess after 3 min or so....
has anyone tryed the prather 225? was wondering if its too much or what?????maybe i should just get my 440/3 cut like darins (.030 and cupped and so forth.) hmmmmmm

Ron,

Give the X642 a try. It's more pitch than the 42x55 and the same diameter. The Prather 225 might work too. Where is your lower unit setup in relation to the sponsons?

[ron1950]

best i can tell with a stright edge i have the prop shaft in line with the bottom of the sponsons

[heli123]

Has anyone actually tried running this boat stock on 5s yet.I want to try but little concerend,also do i need the programming card for the esc or can it be done through your transmitter-Thanks

[GP73]

I'm waiting for my batteries to arrive...

[50mph]

I have only run 4S, things get hot running 4S. I am not the expert but I would keep an eye on everything if you plan on pushing up the voltage. When I ran mine on 4S every wire and the deans were hot, maybe not too hot to worry about but heat is something I try and stay away from. As others have mentioned here, replace the deans with a larger bullet. It is strange that even on 3S the wires get hot; I am thinking the motor really pulls high amps, nothing the ESC can’t handle, but the wires should have been a lower gauge(bigger) for the higher amp draw.

[50mph]

As for the programing, the only way to program your ESC is to use the program card. Your transmitter cant be used to pragram the ESC.

[heli123]

Yea I still run deans for plugs they do get hot and they should not.My buddy runs 6s in his boat and everything is cold using deans.I think something is up here with the electronics in this boat ,not quite sure what it is yet and for a boat that does barely 35mph

[Darin Jordan]

Yea I still run deans for plugs they do get hot and they should not.My buddy runs 6s in his boat and everything is cold using deans.I think something is up here with the electronics in this boat ,not quite sure what it is yet and for a boat that does barely 35mph

A LOT has to do with setup on these boats, and also the quality of the cells, etc.

Also, the higher the voltage, the lower the amps that are required to make the same amount of power, so by upping the voltage, you are actually lowering the amps.

Also, when a boat is running freer, and faster, it has less drag on it and therefore, less heat. The key is to try to get it balanced correctly so that you have the right prop to get the speed you are looking for, without overloading the motor.

As an example... on our P-Limited Hydros... and H10 is a FAST prop, but the motor temps can run upwards of 125-degrees. If you actually PITCH UP that same prop and tweak on it a bit, (in other words, add some more pitch to it), the boat gets quite a bit faster, but actually runs about 15-degrees COOLER.

You just have to find the right combination.

OH, and, especially on these OPCs... , driving style REALLY comes into play as well...

[50mph]

OH, and, especially on these OPCs... , driving style REALLY comes into play as well...

That is the best comment I have read. My driving isnt one to follow, ducks, weeds and sometimes the dock gets in my way.