Will a O.S. .46 work to swing 600mm blades? - HeliFreak
Fun, Learning, Friendship and Mutual Respect START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopter Support > Hirobo Nitro Helicopters


Hirobo Nitro Helicopters Hirobo Freya Evo Eagle Helicopters Discussion


Reply
 
LinkBack Thread Tools Display Modes
Old 01-27-2011, 11:32 PM   #1 (permalink)
 
My HF Map location
Join Date: Jan 2010
Location: US colorado lakewood
Default Will a O.S. .46 work to swing 600mm blades?

ok so i got a hirobo .50..... it has a O.S. .46 motor in it and I'm having a hell of a time getting this thing tuned. i think the low end is good. New to nitro so i really don't know. I can punch the throttle and it doesn't bog down.

My question is am i straining the motor to much trying to push these 600mm blades? Iam only running 7+/- pitch and where it seems to run the best with lots of power it will over heat in like 2 min or less of flight. S so i ritchen it up a few turns and it just a turd with barely any power.

question 1: should I get 30% fuel as iv been running 15% will this help?

question 2: should i get 550mm blades and tone down the throttle curve?
codfish124 is offline        Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 01-29-2011, 11:22 PM   #2 (permalink)
Registered Users
 
Posts: 4,187
 

Join Date: Jun 2009
Location: Long Island, New York
Default

It's hard to give advice without being there, but going with 30% and 550mm blades sounds like a good start. Blades being 1st. My Sceadu has an OS .50 hyper and I swing 600s. At 11 degrees pitch, she is maxxed-out so it's safe to say you need 550s.

Are all the bearings smooth, and is the belt the right tension? Also, is the motor's exterior clean? A dirty motor will not cool as well...adding to a power loss and over-heating...
__________________
Hirobo Evo .50/Futaba 9C/OS 50 Hyper & Hatori/Radix/GV1/GY401&9254/9252s/Arizona Heli Canopy
Trex 500 FBL/Futaba 8FGS/CGY750/CC ICE 75 & Scorp 1400 16T/Radix/9650s/9256
Trex 450 Pro/Futaba 8FGS/450M 14T/TP Blades/ 3156s/ Futaba GY520&9257
Mike2112 is offline        Reply With Quote Quick reply to this message
Old 01-30-2011, 09:06 AM   #3 (permalink)
321
Registered Users
 
Posts: 610
 

Join Date: Jul 2004
Location: Central Florida USA
Default

Do you know if the OS46 is a heli engine? OS heli engines (vs. airplane engines) have bigger cooling fins on the head and carburetors that tune better in the mid-range.

I used to have a Raptor 30 "stretch" with an OS32 (later a TT39) and "600" blades and it worked OK, other than being low on power all the time. It was better for autos though.
__________________
Long live the Rebel L.
321 is offline        Reply With Quote Quick reply to this message
Old 01-30-2011, 09:18 AM   #4 (permalink)
Team Taco Member
 
Posts: 1,446
 
My HF Map location
Join Date: Sep 2006
Location: Salisbury - UK
Default

I would say 550 blades are to small for a 46. A 30 size runs 550mm with no problems
__________________
Mark

Morley F1 60 Max (OS 61LX-H), Hirobo SDX (OS 55HZ-H, GY701), Trex 450SE + some planks
MarkD is offline        Reply With Quote Quick reply to this message
Old 01-30-2011, 03:58 PM   #5 (permalink)
Registered Users
 
Posts: 4,187
 

Join Date: Jun 2009
Location: Long Island, New York
Default

Quote:
Originally Posted by MarkD View Post
I would say 550 blades are to small for a 46. A 30 size runs 550mm with no problems
If he's over heating, blades would be cheaper than a new motor just to see. Maybe the motor is tired. I think you meant "A 30 size runs 550mm with no POWER". Even my 50 hyper with a hitori pipe and radix blades feels week compared to some of the electrics I'v flown...and it's a new motor and mint condition heli. I can't get over the E-powered helis these days. But my Hirobo is the best flying heli I'v ever flown hand down.
__________________
Hirobo Evo .50/Futaba 9C/OS 50 Hyper & Hatori/Radix/GV1/GY401&9254/9252s/Arizona Heli Canopy
Trex 500 FBL/Futaba 8FGS/CGY750/CC ICE 75 & Scorp 1400 16T/Radix/9650s/9256
Trex 450 Pro/Futaba 8FGS/450M 14T/TP Blades/ 3156s/ Futaba GY520&9257
Mike2112 is offline        Reply With Quote Quick reply to this message
Old 01-30-2011, 04:48 PM   #6 (permalink)
Thread Starter Thread Starter
 
My HF Map location
Join Date: Jan 2010
Location: US colorado lakewood
Default

It is the heli motor I put 30% in it and up the pitch to 10 seems good

Sent from my T-Mobile G2 using Tapatalk
codfish124 is offline        Reply With Quote Quick reply to this message
Reply




Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the HeliFreak forums, you must first register.
Please enter your desired user name, your REAL and WORKING email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself. Use a real email address or you will not be granted access to the site. Thank you.
Email Address:
Location
Where do you live? ie: Country, State, City or General Geographic Location please.
Name and Lastname
Enter name and last name here. (This information is not shown to the general public. Optional)
Helicopter #1
Enter Helicopter #1 type and equipment.
Insurance
Please select your insurance company (Optional)
Helicopter #2
Enter Helicopter #2 type and equipment.
Helicopter #3
Enter Helicopter #3 type and equipment.
Helicopter #4
Enter Helicopter #4 type and equipment.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




Copyright © Website Acquisitions Inc. All rights reserved.
 

SEO by vBSEO 3.6.1