fantasm 41 build

[rearwheelin]

I don't use the voltage cutoffs because if the batts don't throw enough current they kick in. It could be your over working your caps it seems. That could mean your batts aren't up to the task or your over propped. Sound like it could possibly be both. I would start with props .

[Rocstar]

Vince, you're hitting the lvc on the controllers, disable them. Check your system for leaks. I use a garden hose to spray into the water pickup while watching for leaks inside the hull. I will also put my thumb over the outlet just to make sure nothing is leaking around a fitting.

[Vin-m]

ok ill disable them now .and that a good idea with the garden hose.ill do that in the am. i used a syringe for giving kids medicine and filled the cooling lines and didnt see any leaks but maybe it just needs more pressure. when i take the lvc off will the caps run cooler?

[rearwheelin]

Make sure your bullets between the batts and esc's are soldered good too ! Caps only get hot when you aren't feeding enough current to the esc's

[Vin-m]

ok so switched the low voltage cut off to off it was set to the highest cut off point. pressureized the the cooling lines and i have no leaks.sumbmerged the back of the boat in the tub and have minor leaks from steering wire mounts but nothing crazy and plus when im moving those are not in the water anyways. should i pull the flex shafts and fill the entire stuffing tube with grease? i filled the stinger and coated the entire cable thick with grease when i first installed it.

leads look good man .none are loose or anything. i would have to cut away heat shrink to peak at them. they are the ones you sent me rearwheelin when i got the batteries and esc's from ya. dont tell me you gave a faulty solder joint bro lol.

[rearwheelin]

Lol.... What prop you running ? And stuff as much grease as you can ! A full synthetic grease like mobile one works great !

[kfxguy]

Get rid of that tape lol. You need to have a look see how I seal my hatches....much less headache. It's in my builds. I've noticed some of the fightercat hulls leak at the seam. May not be in yours...but just throwing it out there because I've had it happen. Now I run a coat of epoxy in the whole seam. I cam across this by accident. While building a boat... I was reinforcing an area...is was taped up on the outside...when I pulled the tape, epoxy seeped through the hull. Also, did you put silicon on all the through screws going through the hull (rudder etc)....that's another area.

[Rocstar]

Get rid of that tape lol. You need to have a look see how I seal my hatches....much less headache. It's in my builds. I've noticed some of the fightercat hulls leak at the seam. May not be in yours...but just throwing it out there because I've had it happen. Now I run a coat of epoxy in the whole seam. I cam across this by accident. While building a boat... I was reinforcing an area...is was taped up on the outside...when I pulled the tape, epoxy seeped through the hull. Also, did you put silicon on all the through screws going through the hull (rudder etc)....that's another area.

Some hulls have pin holes in the seam that will allow a small amount of water in. It's a good idea to reinforce them with CF or FG cloth anyway. Epoxy alone will seal them but doesn't do much for reinforcement. Tape alone will seal the hatch completely. I started using hatch bolts when the hatches were blowing off during a high speed crash and the tape alone would't hold them. Maybe Kfxguy has a better way, but I picked up this idea a few years ago from Keith Bradley. It works great if installed correctly, but over a couple seasons the seal can start to break down.

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Now on my SAW boats I will use counter sunk screws to secure the hatch and tape over them. Another idea I stole......


Also, are you leaving a gap between the drive dog and the stinger? I see the Teflon washers, but can't tell from the picture.

[Vin-m]

i use the proboat grease rearwheeling.

i epoxyed the inside of the entire seam and everything was filled from the out side before it got painted and cleared.i put silicon on the screws, in the screw holes for the boat , and in the screw holes on the hardware, then mounted it. But it still has to be from there some how. i dont really see where else it could come from.im thinking most comes in threw the hole for the scale rudder wires but dont really know what to do to seal it beter. i ran the outer sheath threw the hole as tight as i could and added some silicon around it .


yes i have a very small gap though like 1 or 2 mm .i am still running the square shafts and they dont really move in and out very much. if i make the gap to small does it shove water up the tube?

[Rocstar]

yes i have a very small gap though like 1 or 2 mm .i am still running the square shafts and they dont really move in and out very much. if i make the gap to small does it shove water up the tube?

I didn't realize you were using the two piece shafts. Yeah, then you shouldn't need a gap. I've never used them before myself. How much water are you getting in the hull?

[Vin-m]

a good amount in a short time . maybe like 1/4 cup maybe a little more in like 3-4 minutes. i used to something that a paper towel can soak up in a 8 min run .

[Rocstar]

a good amount in a short time . maybe like 1/4 cup maybe a little more in like 3-4 minutes. i used to something that a paper towel can soak up in a 8 min run .

Let it sit in the tub for a while with the batteries or similar weight, keep an eye on it and check for leaks with a flashlight. The water is coming from somewhere. Also next time out watch your run time with the LVCs disconnected.

[Vin-m]

When I find the leaks what's the best way to seal them ? Just add silicone where the water comes in on the inside of the hull?

[Rocstar]

If the leak is around the hardware mounting , remove and remount using silicone. If it's around the stuffing tubes use a little epoxy.

[Apophis]

I had a little water getting in my Daytona after running her most of the summer. Took me a while to figure out where it was coming from. At first I thought it was in my cooling system and tested it with pressure and that wasn't it. Doing water tests with the hatch off made it hard to find because it was almost like it was oozing up thru the inlay lol. So I put my hatch bolts in, taped her up and left one of my shafts out. I had a little cup with some soapy water and my syringe, I blew into the open shaft (god that sounds bad lol!) but it pressurizes the hull, then used the soapy water around all my hardware to find the leak, kind of like looking for a rim leak on a tire. I see you are using two piece shafts so maybe you could take one of your water outlets off to pressurize it(plug the other end), Hope that helps.