Castle 5th scale - Page 19 - RC-Monster Forums

Pdelcast · 01.12.2011, 11:17 PM

Quote:

Originally Posted by lincpimp

Thanks for the motor pic Patrick. What kind of output do you think the 1717 is good for?

How would it compare to the larger 15 series? Halfway between a 1521 and a 1527, or closewr to the 1527. I never did run a 1527, but I have plenty of experience with the 1521 and the 1717 seems to be as big or more of a jump past the 1521 as the 1521 is to a 1515. Hope that makes sense. Just trying to get a feel for what that 1717 can do.

Still would like to see a few more 17 series motors. A 1727 would be very nice...

The 1717 has more torque than the 1520, just because of the larger rotor. I would think it would fall about in the middle between a 1521 and 1527 (just with quick Windows Calculator math...)

We are redesigning the rotor and stator on the 1717 right now -- trying to juice a little more torque, and less torque ripple.

Pdelcast · 01.12.2011, 11:21 PM

Quote:

Originally Posted by lincpimp

Thanks for the motor pic Patrick. What kind of output do you think the 1717 is good for?

How would it compare to the larger 15 series? Halfway between a 1521 and a 1527, or closewr to the 1527. I never did run a 1527, but I have plenty of experience with the 1521 and the 1717 seems to be as big or more of a jump past the 1521 as the 1521 is to a 1515. Hope that makes sense. Just trying to get a feel for what that 1717 can do.

Still would like to see a few more 17 series motors. A 1727 would be very nice...

Sorry -- forgot to answer your first question!

The 1717 is good for about 3kW in bursts under 5 seconds, 1 minute power is about 900 watts.

We use 1717s on some of our burn-in rigs (for military controllers) with forced air cooling, and they run upwards of 8 hours at a time at 500W output.

It's all about the heat... keep it cool (which means operate around the good efficiency range), and you can put tons of power through it.

BrianG · 01.12.2011, 11:18 PM

All I know is that the 1717 easily pushes my 8th scale truggy around.... and that's when it's pulling my 2 year old daughter in her wagon.

lincpimp · 01.12.2011, 11:48 PM

OK, thanks for the answers. I will have to see how the 1717 does in my 5th scale project. It easily overpowers my lst, so I have high hopes.

Wish I had run the 1527 now, can't imagine it being more powerful than the 1717...

Shonen · 01.13.2011, 12:53 AM

will the 1717 repair kits use the old rotor or the newer one being designed now?

DrKnow65 · 01.13.2011, 04:04 AM

12:45 am, it's installed and I'm tired :-)

I'll get a video up tomorrow after a few hours sleep and a whole day of work...

(I've never experienced the 8S spark before, I had to plug it in twice LOL)

And yes, it all tucks nicely under the body :-)

01.13.2011, 04:09 AM

Oh wow, nice work! Definitely is a tight fit in there but that thing will be a monster I'm sure! And that spark will surprise you first time you plug it in, but I think it's pretty harmless?

DrKnow65 · 01.13.2011, 10:10 AM

Oh yah, thought I should also mention that the Castle 8 gauge wire on the XL fits very nicely into the 6.5mm castle bullets. I did have to grind out a few thousandths from the connectors when I built my Turnigy packs though, and they also use 8 gauge wire, but apparently there's an allowable standard of variation within the "gauge" ;-)

I'll write up a review of first impressions today after a little runtime...

DwightSchrute · 01.13.2011, 10:20 AM

Quote:

Originally Posted by DrKnow65

12:45 am, it's installed and I'm tired :-)

I'll get a video up tomorrow after a few hours sleep and a whole day of work...

(I've never experienced the 8S spark before, I had to plug it in twice LOL)

And yes, it all tucks nicely under the body :-)

wow...that looks wicked!

padrino · 01.13.2011, 11:11 AM

This may have been asked before but any thoughts on adding data logging to an ESC about the size of the MMM? I currently use it in most of my 1/8 and 1/10 scales and was thinking about hopping to the XL in all of them because of the data logging but it's a beast. It is however going in my Baja this weekend :).

Kirkinsb · 01.14.2011, 01:58 AM

Got my CC Baja full conversion kit installed tonight. Everything went well with the first "shake down" run at nearly 10:30 tonight in freezing cold. On a barely charged 8s lipo, it already had more power than my ESP 30.5 full mod engine. Plus it had easily 10 more mph or at least it seemed. I will verify top speed via Garmin GPS this weekend. I could already tell it had more grunt everywhere in the RPM range. Only ran for 5 minutes...it was just so cold and there was so much snow and soupy slush that I was avoiding. It was kind of cool to run my baja late at night right in front of my house and NOT piss off my neighbors. So far so good. More results to come this weekend. Thanks Castle for making this kit. My baja will see some miles now! 8s is fast...and I hear 12s is coming this year.

nativepaul · 01.14.2011, 11:19 AM

With 200kv you need 100Volts even to spin it as slow as a gas motor, are you working on a 30s ESC? If so how are you dealing with the safety aspect, 3x separate 10s pack inputs which are series connected internally within the ESC?

Pdelcast · 01.14.2011, 11:26 AM

Quote:

Originally Posted by nativepaul

With 200kv you need 100Volts even to spin it as slow as a gas motor, are you working on a 30s ESC? If so how are you dealing with the safety aspect, 3x separate 10s pack inputs which are series connected internally within the ESC?

No, this particular motor and wind is for an airplane application, it wasn't designed for a car application. For car applications we will use a .5Y wind and probably a shorter rotor.

We don't want people playing with 100VDC sources.

lincpimp · 01.14.2011, 12:44 PM

Quote:

Originally Posted by Pdelcast

No, this particular motor and wind is for an airplane application, it wasn't designed for a car application. For car applications we will use a .5Y wind and probably a shorter rotor.

We don't want people playing with 100VDC sources.

Would a .5y wind double the kv? So this would be for use with the XL HV (my name for it, what are you calling it?) on 12s lipo?

Just wanted to say it is great having the "Big Cheese" of a company here answering all of our questions!!! Keep up the good work, I am sure it will pay off (literally)!!!

brushlessboy16 · 01.14.2011, 12:44 PM

Quote:

Originally Posted by Pdelcast

No, this particular motor and wind is for an airplane application, it wasn't designed for a car application. For car applications we will use a .5Y wind and probably a shorter rotor.

We don't want people playing with 100VDC sources.

Sounds like the perfect motor for my electric bike!

Just need to find a 100v sensorless controller...