What prop to use on a S.T. G90 ?    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version


TurboHeader Muffler
Seller:  RC Specialties
Details:   $69.95   |  4/28/2013   |  Classified Ad
We will rotate YOUR AD in this spot if you select "Forum Featured" when placing or editing your ad!

All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Glow Engines >> What prop to use on a S.T. G90 ?
Page: [1]

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
What prop to use on a S.T. G90 ? - 3/16/2009 12:47 PM   
Bob Paris


 

Posts: 1301
Score: 110
Joined: 11/4/2002
Last Login: 6/20/2013
From: Lahaina, HI, USA
Status: offline 		Hi Guys...
Any one familure with the ST G90 ? I have a G90 in a 66" span P-51B that weights out 9 lbs.-11 1/2 oz. I have been told that a 14 x 6 would be good...and I installed a 15 x 4 for the break in and first flights.

What do you think... ? I can use all the imput from experienced flyers of the G90.

Thanks, and Soft Landings Aways,
Bobby of Maui

Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize


_____________________________

AMA 15016
Say what you mean, mean what you say...and !#$& it if you can''t take a joke.

Hide Signatures
       Post #: 1

RE: What prop to use on a S.T. G90 ? - 3/16/2009 2:20 PM   
rcdude7


 

Posts: 2223
Score: 105
Joined: 4/12/2003
Last Login: 2/15/2012
From: Great Mills, MD, USA
Status: offline 		Bob, I have used a 13X7 and 13X8 in the faster planes, the 14X6 you have might work. I would try something with more than 4" of pitch in your warbird, it will perform better.

Hide Signatures

(in reply to Bob Paris)
       Post #: 2

RE: What prop to use on a S.T. G90 ? - 3/16/2009 4:47 PM   
Sport_Pilot



Posts: 12544
Score: 233
Joined: 1/22/2002
Last Login: 6/20/2013
From: Acworth, GA, USA
Status: offline 		I suspect a 13x7 or 13x8 would be best. But it will take a longer takeoff run. I would use the 14x6 then the 13x7 and last the 13x8, if only to get used to the lower thrust and higher speed.

_____________________________

“I Saw Elvis at 1000 Feet” John Force

Hide Signatures

(in reply to rcdude7)
       Post #: 3

RE: What prop to use on a S.T. G90 ? - 3/16/2009 5:49 PM   
w8ye



Posts: 36487
Score: 318
Joined: 12/11/2001
Last Login: 6/20/2013
From: Shelby, OH, USA
Status: offline 		I would not try flying a warbird with a 4" pitch prop

< Message edited by w8ye -- 3/16/2009 7:54 PM >

_____________________________

Attended the CutFinger Institute of DirtNap University for years but never did graduate....
Recipient, Mangledhand award August 2008
Club Saito Member #7
Original AMA #31261

Hide Signatures

(in reply to Sport_Pilot)
       Post #: 4

RE: What prop to use on a S.T. G90 ? - 3/16/2009 7:06 PM   
daveopam



Posts: 6672
Score: 191
Joined: 10/10/2002
Last Login: 6/20/2013
From: ELK CITY, OK, USA
Status: offline 		I have 5 ST90's. I use a 14x6 on 4 of them.APC and MA are about the same on this engine. The last one uses a 13x8APC. It's in a mustang.

David

_____________________________

"You only live once. But if you do it right,once is enough."Mae West

Hide Signatures

(in reply to w8ye)
       Post #: 5

RE: What prop to use on a S.T. G90 ? - 3/16/2009 7:55 PM   
w8ye



Posts: 36487
Score: 318
Joined: 12/11/2001
Last Login: 6/20/2013
From: Shelby, OH, USA
Status: offline 		The 13 X 8 will give you better fast fly-by's more ground clearance etc

_____________________________

Attended the CutFinger Institute of DirtNap University for years but never did graduate....
Recipient, Mangledhand award August 2008
Club Saito Member #7
Original AMA #31261

Hide Signatures

(in reply to daveopam)
       Post #: 6

RE: What prop to use on a S.T. G90 ? - 3/16/2009 8:02 PM   
jaka


 

Posts: 7201
Score: 158
Joined: 12/11/2001
Last Login: 6/19/2013
From: Upplands Vasby, SWEDEN
Status: offline 		Hi!
14X6 or 13X8 APC or RAM!

_____________________________

Jan Karlsson - Supplier MVVS Products

Hide Signatures

(in reply to Bob Paris)
       Post #: 7

RE: What prop to use on a S.T. G90 ? - 3/16/2009 11:00 PM   
Bob Paris


 

Posts: 1301
Score: 110
Joined: 11/4/2002
Last Login: 6/20/2013
From: Lahaina, HI, USA
Status: offline 		Thanks Guys,
Great information, and I will use a 14 x 6.

I had considered the 15 x 4 because on the first flights I am not looking for speed...but for good thrust and power. This model is a modified cheap China made P-51D I kit bashed into a "B." Speed is not my first concern, but good pulling power, that is why I was considering the 15 x 4.

Thank you for all your comments...and Soft Landings Always,
Bobby of Maui

_____________________________

AMA 15016
Say what you mean, mean what you say...and !#$& it if you can''t take a joke.

Hide Signatures

(in reply to jaka)
       Post #: 8

RE: What prop to use on a S.T. G90 ? - 3/16/2009 11:34 PM   
XJet


 

Posts: 3848
Score: 100
Joined: 3/31/2003
Last Login: 3/24/2009
From: Tokoroa, , NEW ZEALAND
Status: offline 		A 14x6 will give you good vertical and quick acceleration on take-off but a 13x8 will give you a *slightly* higher top-speed.

It's also worth trying a MAS 13x6 Scimitar, these have worked *very* well for me on the G90.

Also, if you want a really nice prop-noise, the MAS K-series 14x6 or 13x8 will give you that at the sacrifice of some performance. Sounds great though :-)

Hide Signatures

(in reply to Bob Paris)
       Post #: 9

RE: What prop to use on a S.T. G90 ? - 3/17/2009 12:19 AM   
Bob Paris


 

Posts: 1301
Score: 110
Joined: 11/4/2002
Last Login: 6/20/2013
From: Lahaina, HI, USA
Status: offline 		Hay XJet,
I have the Master Air Screw 13x6 and 14x6 wood props and I've been using them for a while now. I don't use plastic props any more and gave all mine away or traded them off. I witnessed a man losing several fingers with an APC prop and it scared the heck out of me. Wood props will break...plastic props amputate.

I'm not looking for speed...though I do believe the G90 will take this less then ten pound model for a good run. I like a solid climb with my new models...and why I was considering using a Zinger Pro 15 x 4 for the first flights. But it seems that no one liked my idea of using a 15 x 4 on a G90 in this model.

Thanks for the imput,
Bobby of Maui

_____________________________

AMA 15016
Say what you mean, mean what you say...and !#$& it if you can''t take a joke.

Hide Signatures

(in reply to XJet)
       Post #: 10

RE: What prop to use on a S.T. G90 ? - 3/17/2009 12:28 AM   
w8ye



Posts: 36487
Score: 318
Joined: 12/11/2001
Last Login: 6/20/2013
From: Shelby, OH, USA
Status: offline 		A wood prop will mangle your fingers very badly also. It happened to me 40 years ago with a wood prop.

_____________________________

Attended the CutFinger Institute of DirtNap University for years but never did graduate....
Recipient, Mangledhand award August 2008
Club Saito Member #7
Original AMA #31261

Hide Signatures

(in reply to Bob Paris)
       Post #: 11

RE: What prop to use on a S.T. G90 ? - 3/17/2009 12:55 AM   
daveopam



Posts: 6672
Score: 191
Joined: 10/10/2002
Last Login: 6/20/2013
From: ELK CITY, OK, USA
Status: offline 		If you want instant throttle response for the first few flight then put a MA 13x6 on it.

David

_____________________________

"You only live once. But if you do it right,once is enough."Mae West

Hide Signatures

(in reply to w8ye)
       Post #: 12

RE: What prop to use on a S.T. G90 ? - 3/17/2009 2:13 AM   
jjscott



Posts: 433
Score: 103
Joined: 7/11/2007
Last Login: 6/19/2013
From: Elm Grove, WI, USA
Status: offline 		Not exactly on topic but Omni Models (and Tower) have the G90 on sale right now for 99.98. Omni gives you a $10 discount for orders over $100 and waives the shipping charge. Add some fuel line or a motor mount & you're over the $100. The regular discount price for the motor is 129.95.

Jim

Hide Signatures

(in reply to daveopam)
       Post #: 13

RE: What prop to use on a S.T. G90 ? - 3/17/2009 6:46 AM   
j.duncker



Posts: 2540
Score: 121
Joined: 6/22/2004
Last Login: 6/20/2013
From: At anchor, , ANTIGUA AND BARBUDA
Status: offline 		I used a 12x8 on my ST 90s flying pattern and a 13x6 in slower flying models. This should be close to peak power in the air in level flight IMHO.

However when I moved to a club with a strict noise rule I used a 14x6 APC and it was OK on this as well.

_____________________________

The dreamers of the day are dangerous men, for they may act their dreams with open eyes, to make it possible.

Hide Signatures

(in reply to jjscott)
       Post #: 14

RE: What prop to use on a S.T. G90 ? - 3/17/2009 8:24 AM   
Bob Paris


 

Posts: 1301
Score: 110
Joined: 11/4/2002
Last Login: 6/20/2013
From: Lahaina, HI, USA
Status: offline 		Thanks Guys...
I'll try both the 13x6 and 14x6 and see what each prop gives me.
Soft Landings Always,
Bobby of Maui

_____________________________

AMA 15016
Say what you mean, mean what you say...and !#$& it if you can''t take a joke.

Hide Signatures

(in reply to j.duncker)
       Post #: 15

Page:   [1]
All Forums >> Glow Engines, Gas Engines, Fuel &amp; Mfg Support Forums >> Glow Engines >> What prop to use on a S.T. G90 ?
Page: [1]





Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


0.563RCU1