RE: Super Tigre G90  
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Tachometer Readings >> RE: Super Tigre G90
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RE: Super Tigre G90 - 9/11/2007 7:35:53 AM   
Robert Groves


 

Posts: 149
Joined: 5/1/2007
From: Johannesburg, SOUTH AFRICA
Status: offline 		thanks nick

Ill get bthe new readings to you as soon as I can.
Moving house this weekend.

(in reply to NikolayTT)
       Post #: 76

RE: Super Tigre G90 - 9/11/2007 7:53:20 AM   
Robert Groves


 

Posts: 149
Joined: 5/1/2007
From: Johannesburg, SOUTH AFRICA
Status: offline 		Nick

I have never heard of an OS A5 plug??
I am going to try the OS 8 four stroke plug in the ST90.

Do you have any details of the A5?

Thanks
Rob

(in reply to Robert Groves)
       Post #: 77

RE: Super Tigre G90 - 9/11/2007 4:16:25 PM   
w8ye



Posts: 17879
Joined: 12/11/2001
From: Taylortown, OH, USA
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Attended the CutFinger Institute of DirtNap University for years but never did graduate....

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(in reply to Robert Groves)
       Post #: 78

RE: Super Tigre G90 - 9/12/2007 1:12:43 PM   
Robert Groves


 

Posts: 149
Joined: 5/1/2007
From: Johannesburg, SOUTH AFRICA
Status: offline 		HaveBlu

12600 with a 12x8 APC.
Are you using stock muffler ?
Plug?
Fuel?

I have an ultrathrust muffler on and getting 12300 peak.

Thanks for the info

Rob

(in reply to HaveBlue)
       Post #: 79

RE: Super Tigre G90 - 9/12/2007 1:17:08 PM   
Robert Groves


 

Posts: 149
Joined: 5/1/2007
From: Johannesburg, SOUTH AFRICA
Status: offline 		thanks w8ye

(in reply to w8ye)
       Post #: 80

RE: Super Tigre G90 - 9/21/2007 2:57:24 AM   
flipstart


 

Posts: 655
Joined: 8/14/2003
From: Andersonville, TN, USA
Status: offline 		Current G90, with stock muffler, OS A8 plug

Wildcat 15%, 18% oil, 80/20 syn/castor
13/6 TF power point
13,200 peak, 12,900 to fly
Have run about 9 tanks thru engine, 4 on test stand
82 degrees, 80% humidity


Big difference when I switched from St plug to the OS #8.

Wonder how much gain one could expect if you removed the baffle, mine is loose anyway and rattles.
Engine is still breaking in and seems to get better with every tankful. the 13/6 may be too small a prop if rpm keeps increasing.

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REAL AIRPLANES HAVE MACHINE GUNS

(in reply to Robert Groves)
       Post #: 81

RE: Super Tigre G90 - 9/22/2007 2:24:04 AM   
flipstart


 

Posts: 655
Joined: 8/14/2003
From: Andersonville, TN, USA
Status: offline 		Failed to mention that I have also cut off the manifold pipe about 1/2" so it does not stick so far into the muffler - should help reduce restriction further. The baffle is removed, I plan to fly next week with the above changes-will post results.

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REAL AIRPLANES HAVE MACHINE GUNS

(in reply to flipstart)
       Post #: 82

RE: Super Tigre G90 - 9/22/2007 4:39:00 PM   
BillS


 

Posts: 3078
Joined: 9/6/2004
From: Greensboro, NC, USA
Status: online 		What is the current wisdom on glow plug heat range for the ST 90.

Bill

(in reply to flipstart)
       Post #: 83

RE: Super Tigre G90 - 9/22/2007 8:47:57 PM   
flipstart


 

Posts: 655
Joined: 8/14/2003
From: Andersonville, TN, USA
Status: offline 		Bill-not sure about the current wisdom-but one of guys I fly with has about 30 years of using ST engines-he helped me with my G90-I was suing the ST glow plug on breakin and starting to have trouble. We switched to the OS #8, which he uses in all his ST engines, and bingo-like a completely engine, even before it was starting to break in. That is only plug he uses in his ST G90s.

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REAL AIRPLANES HAVE MACHINE GUNS

(in reply to BillS)
       Post #: 84

RE: Super Tigre G90 - 9/25/2007 3:00:16 AM   
BillS


 

Posts: 3078
Joined: 9/6/2004
From: Greensboro, NC, USA
Status: online 		Thanks.

Bill

(in reply to flipstart)
       Post #: 85

RE: Super Tigre G90 - 10/16/2007 2:43:52 AM   
buzzingb


 

Posts: 1514
Joined: 9/4/2002
From: Bruce, MS, USA
Status: offline 		The Super Tiger engines seem to be able to take abuse and keep flying. Many engines will not tollerate abuse. I was very interested in trying the tuned pipe on this engine. Have any of you experimented with the pipe on this engine?

< Message edited by buzzingb -- 10/16/2007 2:46:01 AM >

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Buzz

(in reply to BillS)
       Post #: 86

RE: Super Tigre G90 - 12/18/2007 4:52:33 PM   
BillS


 

Posts: 3078
Joined: 9/6/2004
From: Greensboro, NC, USA
Status: online 		Does anyone have rpm numbers for three blade props? I have an application that needs a three blade prop.

Bill

(in reply to buzzingb)
       Post #: 87

RE: Super Tigre G90 - 12/19/2007 1:54:45 AM   
jeffk464


 

Posts: 1243
Joined: 10/31/2004
From: cerritos, CA, USA
Status: offline 		I had the same results putting a OS 8 in my gms 47 it upped the reliability 100%.

(in reply to BillS)
       Post #: 88

RE: Super Tigre G90 - 12/19/2007 4:38:59 PM   
buzzingb


 

Posts: 1514
Joined: 9/4/2002
From: Bruce, MS, USA
Status: offline 		Bill I have seen a guy fly one with a 12X8 MS three blade on a 60 size Mustang with good results. He had a pitts muffler on but don't know if it made more power with pitts muffler or not. It reved up really well in the air and had good speed.

_____________________________

Buzz

(in reply to jeffk464)
       Post #: 89

RE: Super Tigre G90 - 12/19/2007 4:44:31 PM   
buzzingb


 

Posts: 1514
Joined: 9/4/2002
From: Bruce, MS, USA
Status: offline 		My impression so far with the Super Tiger 90 is good. I don't think it can outpower all the other 90 size engines out there but it certainly can hold its own. It is cheap and built well and should hold up for the rest of your life with occasional bearing changes. Mine runs like a top with a 13X6. I want to try a tuned pipe but haven't gotten around to it yet.

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Buzz

(in reply to buzzingb)
       Post #: 90

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