View Full Version : 4035 - X-era or Scorpion..?

12-24-2011, 03:27 AM
Hi there,

I have narowed down my motor options to these two:

X-era 4035, 480kv - http://www.xeramotors.com/index.php?page=shop.product_details&product_id=8&flypage=flypage-ask.tpl&pop=0&option=com_virtuemart&Itemid=1

Scorpion 4035, 500kv - http://www.scorpionsystem.com/catalog/motors/hkiii-40/hkiii-4035/HKIII_4035_500/

My aim is for a very reliable setup, with decent power. Will most likely be running 750 mm's, so under 2000 HS. Jive 120HV and 12s low C Lipo's.

I am leaning toward the X-era as they seem to be running significantly cooler than Scorpions. The less heat under the canopy, the better, imo. A long shaft X-era will cost 90 $ more though..

What is the shaft diam. for the X-era? I'm guessing it is 8mm, stepped down to 6mm for the pinion, correct?

Anyone have any experience with any of these motors, especially paired with a Jive?

Power compared to Pyro 700-52..?

X-era is 8 pole 2,5y wind, Scorp is 10 pole 9 turn delta wind (...?), both multistrand.
Is one of them more likely than the other to cause Jive issues, i.e. shutdowns?

Any input will be appreciated.

Happy holidays.:banana

12-24-2011, 04:01 AM
I personally use the 4035-560 by scorpion. It does its job at 1550 and 1830 rpm, but does get hot to the touch even though I'm flying in rather cold air. Should it fail at some point i'd probably go for an engine with more torque.

12-25-2011, 03:16 PM
Looking at Scorpions site, it seems the next step up from 4035 is a 42xx or 45xx LE.. Nothing in between...

Anyone care to share their experiences with X-era..?

12-27-2011, 02:27 PM
Ok, I've been cruisin' the interweb and this is what I've found:

-X-era's have 8mm shaft, with dual pinion side bearings.

-No particular issues, paired with a Jive.

-A 4030 X-era are said to produce about the same power as a 4035 Scorpion, while running significantly cooler.

Looks like I will try out the 4035/2,5y 480kv in my Diabolo.

Edit: If I can get hold of one, that is...

12-27-2011, 08:10 PM
Only problem is to get them ;)

01-08-2012, 06:36 AM
Got great answers in this thread:


One final question though...:

Will the Xera 4035 fit under the canopy?

It's 65,75mm tall, diam. 49,5mm...

01-08-2012, 02:55 PM
Yes, it will. On IRCHA we have tried a KDE700XF, with 75mm also no problem.

01-08-2012, 03:40 PM
Ah, plenty margin then.


01-23-2012, 02:33 AM
Here are pictures with a Xera http://www.helifleet.com/show/1433
Best Regards,

01-26-2012, 08:21 AM
A good lookin' bird.
I have gotten hold of a 480kv Xera, NIB, from a fellow HF'er.
The Diabolo airframe have so many stiffeners that I almost feel guilty for not putting a LE in it...:lol:

01-26-2012, 03:40 PM
I am running the old Scorpion HK4035-500 for initial setup and sport flying, and it feels strong enough. The first full flight was about 9 minutes at ~1600rpm and only used 75% of the battery. the heli is so efficient, and fast...
The 4035 Xera will be even more efficient.


01-30-2012, 03:12 AM
There is a voting list in a german forum that can perhaps help to find a motor for the Diabolo:


02-01-2012, 04:40 PM
Interesting that the Pyro won that pole. Is there a counterbearing available for the Diabolo? I would be nervous running a Pyro without one...

02-02-2012, 01:38 PM
Yes they are available. Simple state you want one when you order

02-02-2012, 03:12 PM
In the kits is now the motorholder for the Pyro with additional bearing as standard. If you will use another motor then simply press the ball bearing out. Only the Pletti needs a special holder with a bigger hole in the center.

02-02-2012, 09:50 PM
Here are pics of the included Pyro mount:




The collared bearing sits flush with the mount surface, I tapped out the bearing as it won't fit over the stepped shaft of the Xera 4035.

02-03-2012, 04:12 AM
Thanks for the pics. I was wondering how it worked. Looks really well engineered. What a suprise :lol:
Never seen a collared bearing before.