Not many. Over a year ago Goblin fanboys banned me from this forum were I was a moderator.

They told me my Chinese piece of shiz will not survive high RPMs. It does. Year and a half later I am still flying it. Today I was testing brand new Scorpion motor. It has no more power than Gartt motor but gets noticably hotter. I like it because it is relatively quiet.

Dunkan Bossion is using the same motor Scorpion 4525-520Kv Ultimate in his X7

Today all day in the field. Windy day. When I saw this I relised it is good way to demonstrate quality of NMB bearings in Gartt/Assault kit:

Wind started to rotate 700mm blades. I did not touch them. They kept rotating for over 2 minutes.

Keep in mind this heli is frequent flyer for over 1.5 years. I did not grease the bearings at all, ever.

First comment to this video:

 

180A HV ESC for $148 (YGE clone, same as YEP)

http://www.hobbyking.com/hobbyking/...V_4_14S_Brushless_Speed_Controller_OPTO_.html

This is half yearly sale, normal price is $198. YEP is around $220.

Good deal for those who plan to build 800 heli.

Cheapest shipment to Europe is around $7.

 

Another happy owner wants to stretch Assault to 800:

 

25000 is alot of views!.. Good to get commendation from other users who use it. Is there any videos of this guy flying it?

 

Not yet.

Actually 25000 is not much comparing to 700 threads at e.g. rcgroups (over 90 pages!), but:
- we talk about 800 subforum in which my thread has more views than Trekker threads
- thread is dead since I was banned by Will James year ago, but pilots still read it

 

Still my favourite video Jan Erlebach:

New Assault's videos on Youtube:

Assault in Asia:

Older video:

Jesse Mccall "needs help":

Cause of vibrations is simple. Blades are not straight at 700RPM. Centrifugal forces are to weak to straighten them at this RPM. Probably blades are tightened in blade grips to strong.

He should go to the field and apply at least 50% of the throttle. Vibrations will dissapear.

 

Read this:
https://www.torproject.org/about/torusers.html.en

And watch this interview, please (it has 7 844 692 views):

 

Wow Kyle Stacy is also using Scorpion 4525-520 Ultimate, (same as I have in Gartt 800 ) in this video:

 

Ha ha Kyle is a Scorpion factory pilot, so of course he is using the 4525-520 ULT. It's one of the best 700 motors on the market.

 

I will probaly keep Scorpion in 800. I will put Gartt motor into X7 I got today.

I did not use termometer but Scorpion seems hotter after flight.

Gartt survived year and a half in 800 so I hope X7 will not burn it. Gartt has higher kV so fitts 700 better.

 

Scorps can be known to run a little warm.

 

Agreed. It is my this Scorpion. I use them in X5, 600 and 800.

Temperatures upto 200 deg C should not have detrimental effects on Scorpion magnets nor on wires I suppose.

 

200 deg C is getting pretty bloody hot. The windings are only rated at 180 deg C. What temps are you actually getting?

 

I did not use termometer.

Temperature inside motor is crucial, but we usually measure superficial temperature.

I can touch motor after flight. I can not keep it. I am pretty sure there is safety headroom.

 

I generally use the rule of thumb for surface heat that if you can touch and hold then it's <70-75 deg C. Touch and hold briefly then >75 - <95-100 deg C. Too hot to touch >100 deg C.
I know sweet fa about thermal dynamics, but it may not be unreasonable to assume the internal temp could be up to 25% higher than the surface temp??

 

$625 for Gartt 700 combo:
http://www.rcchinamade.com/gt700-df...-version-super-combo-upgraded-tail-swash.html

 

I received $148 RootStar (YEP) 180A HV ESC

Do not worry red LED is visible:

Thank you @Busher


I did not notice this post earlier. I hope Busher did not change his mind in the mean time.

I did not after flying Gaui X7 Formula