RunRyder RC
 3  Topic Subscribe
WATCH
 1 page 1185 views POST REPLY
Helicopter
e-
Align
T-REX 250 › Scorpion -3900: What Pinion, What ESC Setting (% throttle)???
10-22-2009 01:53 PM  8 years agoPost 1
Justin Stuart (RIP)

rrMaster

Plano, Texas

My Posts: All  Forum  Topic

With the Scorpion -3900 on the Trex 250, what pinion are you using, and what ESC setting (% throttle) are you using? What head speed results? Does it bog?

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

PM  EMAIL  GALLERY  Attn:RR  Quote
10-22-2009 10:10 PM  8 years agoPost 2
Richardmid1

rrProfessor

Leeds, England

My Posts: All  Forum  Topic

14T will give you the same HS as the stock SP motor on 16T, 15T will give you 5500 HS! 16T would be insane at around 6000 HS! 100% throttle. As far as bogging is concerned the 250 doesn't have the pitch response of a larger heli due to the small disc so people add more pitch and end up running +/-13 or 14 degrees collective and bog the heli, if you run no more than +/-11 degrees the 250 will be almost impossible to bog providing the HS is high i.e. 5000+.

60% of the time, it works every time!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-23-2009 03:03 AM  8 years agoPost 3
Justin Stuart (RIP)

rrMaster

Plano, Texas

My Posts: All  Forum  Topic

What battery are you running with the -3900? I bought some Hyperion 850mAh 25C, but I'm reading about people using 30C or even 45C batteries. Is this necessary?

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

PM  EMAIL  GALLERY  Attn:RR  Quote
10-23-2009 10:54 AM  8 years agoPost 4
Richardmid1

rrProfessor

Leeds, England

My Posts: All  Forum  Topic

Hyperion are good packs but the best battery for the 250.. and trust me on this one.. is the Align 850mah 30C pack! They are amazing! They beat the ass off my Outrage XP25 860mah pack!

60% of the time, it works every time!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-23-2009 11:08 AM  8 years agoPost 5
deafheliflyer

rrKey Veteran

Arizona

My Posts: All  Forum  Topic

hi
Im running the Scorpion 3900 on 16t with Mini Jazz governed at 80%.

The 45C packs make the Align look bad. I think the Hyperion GX/CX new generation packs give Align a run for their money.

All are good packs though. Im taking the temperatures and efficiency into consideration because I fly in Arizona where the ambient temperature is 110+ during the day.

This is just MY OPINION, sharing what I experienced.. Hope that helps..

I use Align packs to warm up, the hyperion packs to get started and then the 45C packs to get nuts

Crash-Prone and overcoming it!!!

PM  EMAIL  GALLERY  Attn:RR  Quote
10-23-2009 11:15 AM  8 years agoPost 6
Richardmid1

rrProfessor

Leeds, England

My Posts: All  Forum  Topic

Ive only experienced the 35C Hyperions on my 500, I dont think they do a small 35C pack for the 250 do they?

60% of the time, it works every time!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-23-2009 11:18 AM  8 years agoPost 7
deafheliflyer

rrKey Veteran

Arizona

My Posts: All  Forum  Topic

hi
The small hyperion pack I think is 25C... I dont know why but they perform better than my Align 30C pack.. WEIRD!!

Hope that helps

Crash-Prone and overcoming it!!!

PM  EMAIL  GALLERY  Attn:RR  Quote
10-23-2009 11:35 AM  8 years agoPost 8
Darren Lee

rrElite Veteran

Woodstock, GA

My Posts: All  Forum  Topic

15T, 100% flat, 5000rpm.

PM  EMAIL  GALLERY  Attn:RR  Quote
10-23-2009 11:40 AM  8 years agoPost 9
Richardmid1

rrProfessor

Leeds, England

My Posts: All  Forum  Topic

You should be getting a bit more than that with the Scorpion on 15T.

60% of the time, it works every time!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-23-2009 11:49 AM  8 years agoPost 10
Darren Lee

rrElite Veteran

Woodstock, GA

My Posts: All  Forum  Topic

Well that was measured with an optical tach at hover.

By the way, it doesn't bog.

Watch at YouTube

PM  EMAIL  GALLERY  Attn:RR  Quote
10-23-2009 12:20 PM  8 years agoPost 11
deafheliflyer

rrKey Veteran

Arizona

My Posts: All  Forum  Topic

hi
I bet it doesnt

Crash-Prone and overcoming it!!!

PM  EMAIL  GALLERY  Attn:RR  Quote
10-23-2009 12:53 PM  8 years agoPost 12
Justin Stuart (RIP)

rrMaster

Plano, Texas

My Posts: All  Forum  Topic

I use Align packs to warm up, the hyperion packs to get started and then the 45C packs to get nuts
I think I paid $20 a pack for my Hyperion 25C 850mAh. How much did you pay for the TP 45C packs, and where did you buy them from?

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 1185 views POST REPLY
Helicopter
e-
Align
T-REX 250 › Scorpion -3900: What Pinion, What ESC Setting (% throttle)???
 Print TOPIC  Make Suggestion 

 3  Topic Subscribe

Thursday, April 19 - 12:42 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online