** New Zelos 48 Brushless Large Scale Cat From Pro Boat**

[IRON-PAWW]

Out of the box, all my hulls have had the motor plumbed backwards. I run from the under-hull pickup to the lower motor fitting, then from the high motor fitting to outside. The rudder pickup does the esc. Really, you need to twst the motor cooling jacket a little to properly align the fittings at the higest/lowest point - but my motor doesn't get all that hot so I haven't bothered. On every hull, grinding the paint out of the under-hull pickup and tear dropping it has significantly improved water flow as well.

[Rafael_Lopez]

The cooling lines are run in an effective manor, yes even with that loop on the ESC, I consider it efficient. Our cooling sleeves are designed to feed the water from either top or bottom. There is a ring inside, both ends of the sleeve, which backs the water up enough to make sure the water completey moves around the can and has enough time to soak up the heat from the motor; its not smooth inside.


I never found the ESC or motor to run hotter than 90*. If there are heat issues, something is upsetting the electronics.

[kfxguy]

I have run the fittings facing down and didn't notice a difference in motor temp. The cooling jacket is going to completely fill up before water starts exiting. Then the heat will still be drawn out of the water that may sort of hang around in the jacket. It's constantly being replaced.

[IRON-PAWW]

Aha! I didn't know about the rings inside the motor cooling jacket! Very good info to know. I won't be so worried about that now. Makes perfect sense and adds up with the fact that neither of the motors I've had has gotten hot. So those cooling jacket rings *would* restrict water flow a little right? Just for those (like me) who might be wondering why one cooling line may have better flow than the other.

The "slower water pipes more heat away" argument is not one I agree with - but that's another discussion. :-)

[Bexum]

Zelos 48

Great thread really find it it help with the setup of my new zelos 48. I have one question for everyone though. I'm having a hard time getting the proper CG when running in flat water conditions. I'm experiencing a lot of bouncing at full throttle. Here's what I've tried so far. 1) I'm running my batteries as far forward as I can. I'm only running 2 4s batteries in series right now. I have plans of running 4 4s batteries in series and parallel. But I do not have the other 2 LiPo batteries. 2)I've adjusted the strut 2mm down. 3.) I tried running a 4814 CNC Aluminum prop which I've sharpened and balanced. To try and get more transom lift. I have not de-tongued this prop. Would that help? It's basically a "X" prop. On a happier note I love the size of the model. Driving it has been a blast in small chop. I did have to return my first one to Horizon Hobby for replacement. Hull was damaged in the box. No problems there Horizon replaced with Np. I also messaged Rafael as well. He answered very quickly with what he thought and I going look into his suggestions. Sorry do being so long winded but any help or suggestion with flat water setup for this boat would be greatly appreciated.

[kfxguy]

Great thread really find it it help with the setup of my new zelos 48. I have one question for everyone though. I'm having a hard time getting the proper CG when running in flat water conditions. I'm experiencing a lot of bouncing at full throttle. Here's what I've tried so far. 1) I'm running my batteries as far forward as I can. I'm only running 2 4s batteries in series right now. I have plans of running 4 4s batteries in series and parallel. But I do not have the other 2 LiPo batteries. 2)I've adjusted the strut 2mm down. 3.) I tried running a 4814 CNC Aluminum prop which I've sharpened and balanced. To try and get more transom lift. I have not de-tongued this prop. Would that help? It's basically a "X" prop. On a happier note I love the size of the model. Driving it has been a blast in small chop. I did have to return my first one to Horizon Hobby for replacement. Hull was damaged in the box. No problems there Horizon replaced with Np. I also messaged Rafael as well. He answered very quickly with what he thought and I going look into his suggestions. Sorry do being so long winded but any help or suggestion with flat water setup for this boat would be greatly appreciated.

Try an abc prop. They seem to smooth things out on everything I run them on. Not sure what size to tell you to run. Maybe a 50mm? That would be a 2015-17-45 part number. The 20 is the diameter in inches minus a decimal, so 2.0" diameter. 15 is the pitch so 1.5 pitch.

[Xtremespeed]

Great thread really find it it help with the setup of my new zelos 48. I have one question for everyone though. I'm having a hard time getting the proper CG when running in flat water conditions. I'm experiencing a lot of bouncing at full throttle. Here's what I've tried so far. 1) I'm running my batteries as far forward as I can. I'm only running 2 4s batteries in series right now. I have plans of running 4 4s batteries in series and parallel. But I do not have the other 2 LiPo batteries. 2)I've adjusted the strut 2mm down. 3.) I tried running a 4814 CNC Aluminum prop which I've sharpened and balanced. To try and get more transom lift. I have not de-tongued this prop. Would that help? It's basically a "X" prop. On a happier note I love the size of the model. Driving it has been a blast in small chop. I did have to return my first one to Horizon Hobby for replacement. Hull was damaged in the box. No problems there Horizon replaced with Np. I also messaged Rafael as well. He answered very quickly with what he thought and I going look into his suggestions. Sorry do being so long winded but any help or suggestion with flat water setup for this boat would be greatly appreciated.

I find that running 4 batteries really helps keep the front planted. You probably need to try some negative angle on the strut to bring the nose down a little. Just try 1 degree down at a time. I have my strut all the way up in the factory location with 4 batteries and it works well.

[IRON-PAWW]

I too was thinking about ABC props as I think they might be the ticket. 50mm is about where I'd start. Earlier in the thread somebody mentioned a 2215 but that's around 55mm I think so you'd need to be careful.

If someone can sharpen & balance some ABC props for me I'd be interested. Not a skill I possess. Pm'd Dasboata but no reply as yet.

[Bexum]

I agree. I'm going to try a run with two extra 3s batteries for ballast until I get another set of 4s batteries. Thanks for the suggestion. I'll let you know what I get.

[Chado2448]

Guys I could use a little help here. Mine will only do 30 mph on stock prop and 36 on a 4814. Which is weird because it launches out of the water but never seems to pull. Even at those speeds it's bouncing the bow. I tried adjusting the strut but it didn't seem to help. It's is the same with 2 or 4 batteries. I'm running SMC 6500 60c

Sometimes when I first take off it will blip the throttle and cutout, the rudder still works and it beeps 8 times like when you first turn it on. Sometimes it does it twice but then goes just fine. Other times there is no issue at all. Here's a couple pics, tell me if you see anything. Thanks.
image.jpg
image.jpg

[Keagan-Z06]

Maybe try reprogram your ESC? Just a try!

[Rafael_Lopez]

Guys I could use a little help here. Mine will only do 30 mph on stock prop and 36 on a 4814. Which is weird because it launches out of the water but never seems to pull. Even at those speeds it's bouncing the bow. I tried adjusting the strut but it didn't seem to help. It's is the same with 2 or 4 batteries. I'm running SMC 6500 60c

Sometimes when I first take off it will blip the throttle and cutout, the rudder still works and it beeps 8 times like when you first turn it on. Sometimes it does it twice but then goes just fine. Other times there is no issue at all. Here's a couple pics, tell me if you see anything. Thanks.
[ATTACH=CONFIG]143617[/ATTACH]
[ATTACH=CONFIG]143618[/ATTACH]

More speed will lift the back end and calm the bouncing down. The bouncing is seen more in calm water than rough water due to width of the hull and the air trapped under it. We barely see this, if any at all under rough conditions.

Sounds like your ESC needs to be calibrated. The ESC has an auto calibrate feature, but if your TH trim knob is off center, it will not calibrate correctly.

[Jesse Flovin]

I've run consistent 60mph runs back to back on a slight ripple on the larger 52mm prop sharpened & balanced with 4 4s 6000mah 50c. 2 all the way up front of the lipo tray, 2 all the way back.

[Chado2448]

What's the process on recalibrating the esc? I centered all the trim knobs, and adjusted the strut all the way down. Got 47 out of it but now it seems it's lifting the stern way too much and the bounce is almost violent. Like it's lifting the stern out and landing on the right front sponson. I'm going to adjust the strut and try the 2 front and 2 back battery position.

[IRON-PAWW]

Jesse are your temps ok on that 52mm prop? Might give it a try. I'm also going a little slow at the moment and can't figure it out. Might check that throttle trim knob for next time the ESC auto calibrates. I assume there is no way manual calibrate the throttle range? My temps are barely warm so something isn't quite right somewhere.