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Scorpion Power Scorpion Power
HelicopterHIROBOHirobo Freya Docs  Electic Freya?
11-19-2009 11:40 AM  8 years agoPost 121
rapidity

rrVeteran

ohio

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That rpm set is about the slickest software I've seen. If they come out with another update I think I'm gonna stay where I'm at, my system seems really happy right now. Found some info on setting up the auto rotate function if you want it, I haven't tried it yet.

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11-19-2009 01:34 PM  8 years agoPost 122
rapidity

rrVeteran

ohio

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What gear ratio are you running with the 500?

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11-19-2009 06:09 PM  8 years agoPost 123
Dr.Ben

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Richmond, VA, USA

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9.5:1.

I don't consider the CC guidlines WRT to headpseed range to be the last word since they footprint on a nominal cell voltage of 3.7, but that kV and that gear ratio make the program "happy". The model runs well in hover at 1475, but it sits better at 1500. 1980 runs well, but I'm still sneaking up on the governor gain. 25% caused some chatter/hunting in idle up. I'll worm out the auto set up once I get these other little bugs worked out.

Ben

Team Synergy Team Futaba Team Kontronik USA
Progressive RC

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11-19-2009 10:46 PM  8 years agoPost 124
rapidity

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ohio

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I think it gives you a pretty good idea for headspeed range with the different gear ratios you have available. I wouldn't have even tried this combo based on other calculators. I played a very little bit with different headspeeds last week, and much out of the range it recommended and I had a bouncing tail and surging, but that might have been fixable if I had more time to play with it.

Not sure what actual headspeeds I'll be running at yet, as this was all thrown together quickly just to get an idea of what it could do. Unfortunately, looks like this will be the last weekend I'll be able to play with it weather wise, then I'll be tearing it down and getting ready to start over in the spring.

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11-20-2009 12:40 AM  8 years agoPost 125
Dr.Ben

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Richmond, VA, USA

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You never told me what kV motor you have, 400 or 470? Couldn't be anything higher with an 11 t on 12S.

BTW Bob, look closely and make sure your mount is putting the pinion square to the maingear. Mine was NOT. I needed to enlarge the four mount-to-frame holes to square it up.

Ben

Team Synergy Team Futaba Team Kontronik USA
Progressive RC

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11-20-2009 05:33 AM  8 years agoPost 126
Henke Beyers

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South Africa

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Dr Ben

What gauge are you using to level the scorpion mount to get the pinion to run square with the main gear?

Also what pinion are you using?

Henke

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11-20-2009 06:04 AM  8 years agoPost 127
Dr.Ben

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Henke,

No gauge, just my eyes. If you'te careful and look closely, you can rotate and bring the leading of a tooth of the pinion right to the leading edge of a tooth on the maingear. When the gap is just barely closed, you can sight the line at the interface between the teeth and get a pretty good idea of how squarely the system is running. After that, you eyeball the teeth on the maingear closely for a few flights and look for uneven buffing of the teeth.

Right now, I'm using a "Crown Gear" (FKA Revco) 10 t mod 1 pinion from RC Market.

Ben Minor

Team Synergy Team Futaba Team Kontronik USA
Progressive RC

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11-20-2009 11:44 AM  7 years agoPost 128
rapidity

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ohio

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It's the 4030/3y 470

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11-20-2009 11:55 AM  7 years agoPost 129
Henke Beyers

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South Africa

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Dr Ben

You used to have another motor in your E3. Did you change to scorpion for any reason?

Thanks
Henke

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11-20-2009 12:12 PM  7 years agoPost 130
bexander

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Gothenburg, Sweden

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Dr.Ben

Are you using a 6mm motorshaft and no supportbearing??
I am flying my e-freya with 12S 4035-400 and 12T/95T 8mm shaft. I would like to use 11T/93T instead but I am worried about using a 6mm motorshaft without support bearing.

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11-21-2009 04:53 AM  7 years agoPost 131
Dr.Ben

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Richmond, VA, USA

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I'll catch up the several questions in one reply.

I chose a Scorpion to try for several reasons. First, you can usually source one when you want it. You don't have to wait a month to have the motor made to order. Second, I wanted to try a slightly higher kV, and Scorpion had just released thier new 4035-500 with mods to improve cooling. Third, I've had frequent email traffic with the factory, and they'll actually reply with a cordial response within 24 hours. Fourth, you can easily disassemble and service the bearings and shaft in a Scorpion. It's cost effective to replace the shaft with each bearing change. Sixth, their motors are sensibly priced and of nice quality. How's that for some reasons ?

You have no option to run top bearing support on a VPUS E3 with any pinion other than the one from the E3 bell with a pinion adapter, period. I did a lot of asking about bearing and shaft longevity with a set up without top bearing support. There is no question that I'll likely have to service bearings a bit more often in the motor. However, I heard from no one that said the 6mm shaft wasn't rigid enough to be self supporting against flex. Indeed, there is at least one Align 700 conversion which also successfully uses no top support on the bearing. You couldn't pay me to use a 5mm shaft motor, but 6mm appears to be fine. The most important thing to do is keep the pinion as far down on the motor shaft as possible. Run it no higher than needed to completely cover the maingear. Make sure the gear mesh isn't too tight and lube the motor's bearings on a frequent schedule.

CC's new software is playing well with this motor in outrunner mode. Set rpm is actually working. Governor gain is at 20%. Components are running modestly above ambient temps.

Ben Minor

Team Synergy Team Futaba Team Kontronik USA
Progressive RC

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11-21-2009 05:01 AM  7 years agoPost 132
ErichF

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Sutton, NH

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Hey Ben,

Can one order the Scorpion motor with a longer motor shaft? I need an extended shaft to run in my little motor mount Dwight designed...about 2 inches.

Erich

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11-21-2009 05:25 AM  7 years agoPost 133
Dr.Ben

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Erich,

I looked around on Scorpion's website and saw no listing for a long shaft. However, you can't be the first one to ask this question or need this option, so I would email Scorpion direct in Hong Kong. Look for a reply from a gentleman named Perry Wong. He's a nice fellow.

Ben

Team Synergy Team Futaba Team Kontronik USA
Progressive RC

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11-21-2009 06:07 AM  7 years agoPost 134
Henke Beyers

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South Africa

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Hi Dr. Ben

I've already replaced my bearings with koyo ones before installing the motor. Do one need to oil the bearings before flying and at what intervals?

Thanks
Henke

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11-21-2009 06:44 AM  7 years agoPost 135
Dr.Ben

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They suggest oiling every 5 or so flights. This makes sense to me and would appear to be critical to longevity. The bearings are under a good deal of load and are running on nothing more than the lubrication under the shields. No way that's enough for long term lubrication of the bearings in such a demanding application. Fortunately, with an extension tube on a small oil bottle, it's easy to reach even the lower bearing in the motor. Just oil the motor bearings with each flight session when you do the swash and t/r slider.

Ben Minor

Team Synergy Team Futaba Team Kontronik USA
Progressive RC

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11-21-2009 07:31 AM  7 years agoPost 136
bexander

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Gothenburg, Sweden

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ErichF:
Scorpion does have a long shaft but not long enough if you need 2 inches.
Scorpions long shaft is 32mm.
http://www.rcmarket.org/motor-shaft...1-pr-30258.html
Why not ask the factory, maybe they will make you one.

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11-22-2009 05:23 AM  7 years agoPost 137
Dr.Ben

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Richmond, VA, USA

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I flew the E3 with Scorpion 500kV upstairs today, and it did really well. CC software is running smoothly. Running at 1980, you wouldn't know it until you pull a vertical line. Then it just goes..... The gear mesh is now much more settled and quiet. I see nothing at this point to suggest that the mesh is floating in flight under flight loads. I'm religiously oiling the motor bearings every few flights with just a few drops of high quality oil.

This is really nice.....

Decent weather forecasted for tomorrow, so I'll be tweaking some p-mixers for rolls and so forth.

Ben

Team Synergy Team Futaba Team Kontronik USA
Progressive RC

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11-22-2009 02:26 PM  7 years agoPost 138
oy9203

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Dronninglund,​Denmark

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Hi
What mods have they maked on scorpions motorer to improve the cooling?

Regards

Flemming

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11-22-2009 06:46 PM  7 years agoPost 139
Henke Beyers

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South Africa

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Dr Ben

Do you have to replace the motor shaft when you replace the bearings on the scorpion motor?

Henke

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11-23-2009 12:46 AM  7 years agoPost 140
Dr.Ben

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Richmond, VA, USA

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Scorpion added holes to the bottom of the canister to move more air. I think they played with their shape as well. Over here in the US, Lucien Miller told me it dropped motor temps in demanding applications by about 20D F.

No, you don't have to replace the shaft with each bearing change. The only reason I'd do it is if there was noticeable shaft wear from a bearing slipping on the shaft. I just like the option of being able to do easily it if indicated.

More good flying today in some realistic headwind. 5:30 of aeros took about 3800 mA's from the 12 S 500 packs. All components are running cool(ly). I'm wavering to and fro between whether the motor is running smoother in set RPM versus governor high mode. More testing to settle that question next time. Either way would honestly be acceptable.

The gear mesh still appears to be stable.

In total, things are good.

Ben Minor

Team Synergy Team Futaba Team Kontronik USA
Progressive RC

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