Smoke?

[Ub Hauled]

I think you have a blown cap my friend...

[WaterWalker]

Are you or did you place some fuel tubing over the stuffing tube/shaft exit on the motor side? If you did and did not oil it, it can burn the tubing (smoke)..

Having said this I dont recommend a X-645mm prop.. others might but if you are 3 mins into a X-645mm prop, you are past the limit of what the ESC can handle in the first place, and, doing so for 3 min.. Toss a Eagle Tree capture devise in the boat and let us know.. I bet you are WELL over 70 amps on this prop. .. ask me how i know.... lol.. I LOVE TESTING........

Please back off on the prop! Thanks!

Grim

Grim...

Props... Brand new UL-1... took your advice and got a Grim L38X55, also picked up a Graupner K-45, Oct X642, and Oct m445 to test with as well... As I have never balanced / sharpened a prop... Yet... But, sure have been reading about it and got the AquaCraft prop balancer...

Further prop advice... ??? ??? I do Not want to burn anything up ;'''''''(

Luke
Sumter, SC

[WaterWalker]

Alvin...

Sure hope it's a minor hicup, maybe grease off the coupler or shaft... ??? Gravity didn't get it on the hatch... (???)

Also... "Air Dam Advice" ??? ??? is/was ??? Much interest...

Thanks,

Luke

[sailr]

Two of the guys in my group are running Oct M642 and Oct M645 props. They're both having problems! I'm staying away from those props. They seem to be too big for the ESC! I'm running the stock strut setting with the smaller Grim 3 blade and getting just about the same speed as them and everything is cool and happy in the boat.

[alvinsmith75]

OK next question. I have run the sv27 motor before on the hydra 120 with NO LUCK. The motor would get very hot on the hydra but run fine on the sv esc. The big question is "Will the ul1 motor work on the castle esc?" I will buy a hydra 240 and put in there so I can keep my m645 prop. I know I would be fine with the 120 but for what I pay for the 240 it just isn't worth it.
Thanks,
Alvin

[sailr]

Most like the 'timing' is set wrong on the hydra for the SV27 motor! That's why it's over heating. I don't know what the the correct timing and PWM settings are for the Aquacraft motors. Maybe you could call Castle?

[Ub Hauled]

Alvin, what version of the software/firmware were you using with your SV motor? There was a big problem with version 1.03 firmware, when set to "normal" timing the timing was actually "Extreme" (16+ degrees)... that is really a lot of timing, that's why everything was getting hot. with the new version of the firmware (1.04) that problem was solved. You should update your firmware/software and re-calibrate your Tx to your Rx... once that is done, set your timing to 4 degrees and tweak as necessary.

[alvinsmith75]

Thanks guys. I did have 1.03 in that set up.

[alvinsmith75]

How about this? UL1 motor, m645 prop, 2-4s Thunder Power 25c 3850mah lipos (in parallel of course) and an Etti 150 ESC from Steven. Would this be a solid setup for sport running? Also would the Esc, prop and battery setup work with a Neu 1515 1y? This would be my first Etti ESC and I would like to make sure it would be capable of handling the Neu motor because it could end up in the UL1 one day.

[LuckyDuc]

It might be good insurance to run an external BEC like a Dimension Engineering Park BEC or Castle Creations BEC too. That will remove the burden of stepping down the voltage from the ESC, and keep it running cooler as well. I do this with all of my 4S + power setups on my EDF jets.

[sailr]

We have found the M645 prop is too much for the UL-1 motor. Don't use any more than a 640-642. Not sure about the Neu. We are not running that big a prop on our P monos (4S) with the Neu 15151Y. Best prop is the X447/3 , relieved and de-eared! The Etti will handle the Neu OK, it's the prop load you have to worry about. No matter the capability of the ESC and motor, over-amped is over-amped!

You are also pretty limited with the 3850mAh batteries. Our group stays with the 5000's.

As for the UL-1, why not stick with the stock setup? We're getting speeds over 50mph with the grimracer 3 blade props! More mAh does give you more power also.

How about this? UL1 motor, m645 prop, 2-4s Thunder Power 25c 3850mah lipos (in parallel of course) and an Etti 150 ESC from Steven. Would this be a solid setup for sport running? Also would the Esc, prop and battery setup work with a Neu 1515 1y? This would be my first Etti ESC and I would like to make sure it would be capable of handling the Neu motor because it could end up in the UL1 one day.

[Capt. Crash]

As for the UL-1, why not stick with the stock setup? We're getting speeds over 50mph with the grimracer 3 blade props!

Good idea...it runs great on the grim props but what I want to know is:

Who?
How fast?
With what setup?

I've not seen anyone post anything at or above 50mph yet in race trim with the turn fin attached. I got 49.4 one time and 49.0 several others but haven't gotten mine to 50mph.

[Brushless55]

As for the UL-1, why not stick with the stock setup? We're getting speeds over 50mph with the grimracer 3 blade props! More mAh does give you more power also.

Sailr, what Grim prop gets you over 50mph?

[MarkJnK]

More mAh does give you more power also.

What did I miss here? I thought that voltage=power, while the mAH=size of fuel tank? How does mAH provide more power?

p.s. I'm not trying to be a smart ass, I'm honestly curious and want to learn.

[sailr]

40/52/3 and 40/57/3. Rounded rudder. Small tweek to the strut angle and fairly well forward CG.

Sailr, what Grim prop gets you over 50mph?