P-Limited Motors - Im going to jump on the hot seat.

[rayzerdesigns]

You forget that I "introduced" them to these motors first...

Those here locally have already been "indoctrinated"...

Well phooey on you.. Lol.. But did find a couple little secrets.. ��

[ray schrauwen]

For those motors or 1500s??

1500's please, thx.

[rayzerdesigns]

Start with a 450 2 blade..droending in temps 447 /3 or 450/3

[TheShaughnessy]

So the conclusion thus far is we are where we were at the start of all this? No suitable replacements?

[Darin Jordan]

So the conclusion thus far is we are where we were at the start of all this? No suitable replacements?

All I'm doing is putting the data out there (well... I guess there has been a "conclusion" or two stated from my perspective, but....).

I'll let you draw your own conclusions, but the data shows that, of all the motors in the tests, there really isn't anything that can be considered "equivalent" to what we already have.

You either have noticeably HIGHER performing, or noticeably less.

[ray schrauwen]

Start with a 450 2 blade..droending in temps 447 /3 or 450/3

Cool, thanks!

[Darin Jordan]

Start with a 450 2 blade..droending in temps 447 /3 or 450/3

I concur. On my IM31 V3, I used the 1500 with an X447/3 that's been "slightly tweaked" and the boat FLIES (in a good way).

Find a prop (diameter/blade shape) the boat likes, maybe the 450/2 or the X447/3, and if temps look good, then start tweaking on THAT prop to get the pitch where you want it.

[zooma]

Any downside to running a three blade prop? Cavitation? Torque roll? Prop walk? Drag? Speed loss?

[Darin Jordan]

Any downside to running a three blade prop? Cavitation? Torque roll? Prop walk? Drag? Speed loss?

The only reasonable answer to that question is honestly: YES/NO. It's all about hull, setup, and prop prep.

[zooma]

Is the tested Dynamite 1500 motor this one?

http://www.horizonhobby.com/a3630-1500kv--6-pole--water-cooled--marine-motor-dynm3835

[properchopper]

Alright - I applaud these tests I've learned lots of what will help me next year (given that D19 holds to the original NAMBA list of approved motors). BUT what I'd like more data on is one of the original causes of this entire search : that "Ltd motors" as specified in the rulebook, notably the original most go-to'd motor, the AQ 2030, began to melt down on the oval course as replacement production worked its way in. A load test for one minute helps but how about a simulated heat race duration test to see the survival factor under (somewhat) simulated race conditions ?

Alternately ( I know this is a stretch) but here's some data I'd like to see :The FLAME-OUT Test :let each motor run under load until the smoke comes out with the timer running. See which one will survive the longest
( ain't having fun 'till you dial 911 )

[rayzerdesigns]

Tony as the electric chair for d19 thrre are no plans to step away from the current spproved list of p ljmited motors..

[properchopper]

Tony as the electric chair for d19 thrre are no plans to step away from the current spproved list of p ljmited motors..

Didn't I just say that above ? : "(given that D19 holds to the original NAMBA list of approved motors)"

Probably better said as " given that D19 has presently decided to continue to hold .... " OR better yet : "since D19 hasn't added any updates to the approved list......."

BTW the first SCSTA/Nitro ( with a new name) will offer PLSH & PLC on Sun 1/24/16

[Darin Jordan]

AA load test for one minute helps but how about a simulated heat race duration test to see the survival factor under (somewhat) simulated race conditions

Tony, For racing, we all water cool our motors. 1-Min running at 100A WITHOUT any water cooling should be more than enough to help determine "survival factor".

Now, I suppose I could do it again, simulating on/off throttle, etc., but I'm not really sure what that would show us. I think we can see what we need to see.

Besides, I'm still having to vent my shop from the two SSS motors that went "kaput"...

[RandyatBBY]

I am with Tony! Where is too far, the burn up point.

Did you test the 3662 2000Kv? A lot of the guys in district are running them in stock PB boats.