RunRyder RC
 8  Topic Subscribe
WATCH
 1 page 1766 views
Scorpion Power Scorpion Power
HelicopterThunder TigerRAPTOR 50 › OS50 Hyper throttle curve and RPM
08-06-2007 08:38 AM  10 years agoPost 1
avibreny

rrNovice

Slovakia

My Posts: All  Forum  Topic

Hi

I'm flying R50 with OS50 Hyper, Hatori mufler, SAB600 blades, plastic head, 20% nitro

With throttle curve 90,45,35,45,90 in flight mode 1 I'm getting RPM around 2000 and more. Throttle curve points seems to be quite low but RPM is relatively high. If I set curve to 100, 60, 45,60, 100 what I found as suggestion RPM goes to 2200 and more.

I learned that 2200 is too much for plastic head. Is my configuration with 90,45,35,45,90 OK? What is ideal RPM for my configuration and what trhotthle curve should reflect it?

Btw my pitch is -9,0,+9

PM  EMAIL  Attn:RR  Quote
08-06-2007 09:24 AM  10 years agoPost 2
colsy

rrElite Veteran

Cambridge, UK

My Posts: All  Forum  Topic

Those Throttle curve "value's" are only relevant if you have a sound mechanical set-up.

I.E when your throttle gimble is at 50% is your carb marker on the halfway marker ?, if it is and your on standard gear ratio 8.5:1 with 600 main's.

Then you could be running your motor to lean.

Which is why your exceeding 2k whilst hovering at 35% thr 'value'

Colin.

Only Quote From Experience.

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
08-06-2007 05:24 PM  10 years agoPost 3
BarracudaHockey

rrMaster

Jacksonville FL

My Posts: All  Forum  Topic

The hyper produces a good bit of power so hovering at 50% isnt the case any more.

Its true you could be too lean, you need to monitor your backplate temps, if its too hot to hold your finger there several seconds then its too lean.

Andy
AMA 77227
http://www.jaxrc.com

PM  EMAIL  GALLERY  Attn:RR  Quote
08-07-2007 05:34 AM  10 years agoPost 4
Jonty

rrVeteran

Wellywood

My Posts: All  Forum  Topic

I find my hyper puts out a great deal of power so my normal curve (which is the only one I need to worry about particulary with the governor) is relativily low. 50% is way to high for me to hover on, I am down around 30 - 40% from memory which is about 1750 ish.

PM  EMAIL  GALLERY  Attn:RR  Quote
08-07-2007 08:45 AM  10 years agoPost 5
v58 fuy

rrVeteran

UK - Kent

My Posts: All  Forum  Topic

How many people are running just one idle-up instead of two. And what sort of throttle curve are you running in idle-up?

David

PM  EMAIL  GALLERY  Attn:RR  Quote
08-08-2007 08:46 PM  10 years agoPost 6
avibreny

rrNovice

Slovakia

My Posts: All  Forum  Topic

Yes at 50% trotthle my carb is exactly in center position (middle mark). I'm measuring my temp on head it did not go over 80 degree celsius so I don't think it's running lean. My flights are 9 minutes so this indicates to me as well that it should be not lean.

See graphs as I measure them during flight. First I hovered in normal then I swithed to flight mode 1.

PM  EMAIL  Attn:RR  Quote
08-11-2007 07:41 AM  10 years agoPost 7
dragonlord

rrVeteran

luton uk

My Posts: All  Forum  Topic

Jonty is right the hyper puts out way to much power when its tuned right.

mine no when near 50% at hover

try say 85 64 42 64 85 start about there as a starting point

NB the hyper 50 will pull more that -9 to +9 easy.
try at least -10 to +10

im running at about -10.5 to +10.5

PM  EMAIL  GALLERY  Attn:RR  Quote
08-11-2007 01:17 PM  10 years agoPost 8
BarracudaHockey

rrMaster

Jacksonville FL

My Posts: All  Forum  Topic

It pulls +-12 just fine on my raptor and thats with 620 blades.

Andy
AMA 77227
http://www.jaxrc.com

PM  EMAIL  GALLERY  Attn:RR  Quote
08-11-2007 07:45 PM  10 years agoPost 9
v58 fuy

rrVeteran

UK - Kent

My Posts: All  Forum  Topic

"mine no when near 50% at hover

try say 85 64 42 64 85 start about there as a starting point"
______________________________________________________________

On a -10/+10 V curve like you state surely your hovering at 65-70% throttle.

You can hover a hyper at like 35-40% throttle but you won't get a good headspeed, my V curve for acrobatics etc... is around 100,65,43,65,100 almost the same as Timelord.

David

PM  EMAIL  GALLERY  Attn:RR  Quote
08-12-2007 05:02 AM  10 years agoPost 10
turboomni

rrProfessor

East of the Equator

My Posts: All  Forum  Topic

I have found the OS Hyper 50 needs a GOV to make the heli and the Pilot happy. Get the curves as best you can [order one set of factory bearings for replacement]. You can get close to match your flying style but once the throttle curves are set to your satisfaction [flying style] ,,you then try something else like a really rapid decent ,you will get over speeding. The Big bore carb offers alot of power but at the expense of control. Like a hot rod with a BIG carb...more like all or nothing. The GOV will help.

Setup is everything, All my heli's can fly far better than I can pilot them

PM  EMAIL  GALLERY  Attn:RR  Quote
08-12-2007 01:16 PM  10 years agoPost 11
jsenicka

rrProfessor

Eagle River, WI

My Posts: All  Forum  Topic

I would not go as far as to say it needs a governor.
Yes a huge negitive yank while upright will overspeed, but if I don't do that, it will not .
I have found a Muscle Pipe holds me pretty close to 17,000 on the engine, and decent throttle curves work well. In order to get the head speed constant, you will need swash throttle mixing. I run +/- 10.5 (as much as I can get on stock head). Throttle is about 100, 52, 35, 52, 100 and about 40% swash/throttle mix.

All this said, I will install the two additional CSM RL10 units I have in my 50's on next major overhaul. I have just gotten too spoiled running RL units in my 90's

Jim Senicka
Team Manager, GrandRC Flight Team

PM  EMAIL  GALLERY  Attn:RR  Quote
08-16-2007 04:33 AM  10 years agoPost 12
turboomni

rrProfessor

East of the Equator

My Posts: All  Forum  Topic

I would not go as far as to say it needs a governor.
Yes a huge negitive yank while upright will overspeed, but if I don't do that, it will not .
Depending on what you do with the heli ,I agree a GOV is not always needed,BUT now with a GOV I can yank it all I want and not worry about anything,, no worries
Safe Heli

Setup is everything, All my heli's can fly far better than I can pilot them

PM  EMAIL  GALLERY  Attn:RR  Quote
08-16-2007 08:41 PM  10 years agoPost 13
Jezmo

rrNovice

Spring, Texas - USA

My Posts: All  Forum  Topic

My curve looks very similar to Jonty's.

PM  EMAIL  Attn:RR  Quote
WATCH
 1 page 1766 views
Scorpion Power Scorpion Power
HelicopterThunder TigerRAPTOR 50 › OS50 Hyper throttle curve and RPM
 Print TOPIC  Make Suggestion 

 8  Topic Subscribe

Thursday, November 23 - 12:05 am - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online