Stiletto First Run w/New Boat

[ALD]

Ran Stiletto with the 42 X 55 grim sharp/balanced today. OMG! super fast - I would guess around 40mph w/o gps. This boat rocks. Thanks again Darin for the info.

[Brushless55]

I wana see more vids!

[GP73]

If you are talking about the stock prop, then certainly... it wasn't designed to go much faster with that prop...

Put an X440/3 or Grim 42x55 on there, perhaps with a little pitch added, and then hang on!

Interesting, I got a Grim 40x52/3 yesterday at the LHS, can't wait to try that one on...

[ron1950]

used a 440/3 and noticabley faster but wires got warm and one even unsoldered itself but they were the ones i did so could be anything lol......really couldnt tell the temp as waited 30 min for boat to come drifting back to shore...even had to wade to get it finally....batteries were slighly warm to the touch but did run 5 min or so....the batteries were stacked on top of each other in front of bat compartment wire that was touching the plastic top peace did form slight indention lol......oh well back to drawing board or the soldering iron.....

[GP73]

used a 440/3 and noticabley faster but wires got warm and one even unsoldered itself but they were the ones i did so could be anything lol......really couldnt tell the temp as waited 30 min for boat to come drifting back to shore...even had to wade to get it finally....batteries were slighly warm to the touch but did run 5 min or so....the batteries were stacked on top of each other in front of bat compartment wire that was touching the plastic top peace did form slight indention lol......oh well back to drawing board or the soldering iron.....

Battery or motor side?

Never mind, I've re-read your message... :)

What connectors are you using?

[Darin Jordan]

used a 440/3 and noticabley faster but wires got warm and one even unsoldered itself but they were the ones i did so could be anything lol......really couldnt tell the temp as waited 30 min for boat to come drifting back to shore...even had to wade to get it finally....batteries were slighly warm to the touch but did run 5 min or so....the batteries were stacked on top of each other in front of bat compartment wire that was touching the plastic top peace did form slight indention lol......oh well back to drawing board or the soldering iron.....

When I'm recommending props like this, I'm recommending them for RACING applications. As such, you sport boaters need to keep in mind that a race only runs for about a 1 1/2 minutes or so, and mostly at full throttle (even in the turns). Sport running with these setups will likely cause the boat to get warmer.

Also, my 440/3 is back-cut about .030" and detounged slightly, so it doesn't have the blade area, lift, or blade loading that a stock one would.

Keep an eye on things when trying these setups and build up to them...

[ron1950]

deans but thinking of going to plugs

[ron1950]

one and a half minetes....heck i am going back to gas

[Darin Jordan]

one and a half minetes....heck i am going back to gas

Hahahaha... Yah... FE isn't for everyone, that's for sure.

You can run longer... just have to prop down for this setup.

[GP73]

deans but thinking of going to plugs

With the X440 (2 blades) I can go to LVC and the wires get to ~120F at the end, heatsink on the ESC is ~100F and caps are about ~130F.

This is with 2x 2S 5300mah Turnigy hardcase (these are really 2S2P 2650mah) mounted vertically in front, side to side.

I'm using 5.5mm bullets on the batt side, I still need to change the motor side.

I should make a hole on the motor cowl to check the temp, but I don't want to ruin the look...

[Darin Jordan]

deans but thinking of going to plugs

You'll have a lot less resistance going to 5.5's instead of those Deans... In fact, I usually cut off the Y-harness, and just use the red and black wire, then series together the batteries themselves. Any resistance you can eliminate will mean more runtime and less heat.

On the motor wires, if they are getting warm, you might want to open up the front of the motor cover some to allow more air to circulate around the motor. I did this on mine and it helped a lot.

[ron1950]

know what ya mean on the look if i wanted to run a ugly looking pos id run nitro....hey darin what is it in fe racing...first one to 3 laps wins?......so what about a x642/2 will that brin temps down?

[ron1950]

i have a large round hole in the front of the motor cover as i put the water outlet from a bj26 in the back of the motor case like u did....usually i just flip the boat and cool the motor that way...oh ya the voltage on each cell was 3.85 or so so couldnt ahve run that long....

[ron1950]

Ok up for suggestions on a prop. I have a 642. Hope that will run cooler. Anyone?

[Darin Jordan]

Try the 642. It should be a little better on temps.