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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Glow Engines >> "Tachometer Readings for Glow Engines"
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"Tachometer Readings for Glow Engines" - 4/1/2007 4:18:10 PM   
SigMan



Posts: 722
Joined: 6/27/2004
From: Boonville, IN, USA
Status: offline 		i am starting this thread so we glow engine lovers have a place to go so we can compare are tach readings with other pilots. owners of 2 and 4 strokes are encouraged to post up now ! please. keep your reply short, with idle reading and WOT(Wide Open Throttle) readings only.

Magnum RFS 61 4-stroke APC 12*6 prop
low 3600 (manual says 2000, but 3600 is what im getting. ok for my trainer. very reliable.
high 9900

Saito 180 4-stroke readings coming soon !

< Message edited by SigMan -- 4/1/2007 5:27:50 PM >

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RE: "Tachometer Readings for Glow Engines" - 4/1/2007 4:57:26 PM   
BillS


 

Posts: 3048
Joined: 9/6/2004
From: Greensboro, NC, USA
Status: offline 		You might want to investigate the ‘Tachometer Readings’ forum.

Bill

(in reply to SigMan)
       Post #: 2

RE: "Tachometer Readings for Glow Engines" - 4/1/2007 4:58:46 PM   
meaden



Posts: 622
Joined: 1/27/2006
From: Decatur, GA, USA
Status: offline 		You need to include the prop and brand too make the readings useful.

OS 46 SF with an 11x7 APC, 3k on the low end and 11k on the top. I tried everything from a 10x6 to a 12x6 with this engine. 11x7 is the sweet spot.

OS 52 Surpass with a 12x6 MAS K-Series, 2.6k low end on a good day an 9.8 k on the top.

ASP .46 with a Zinger 11x6, 3k on the low an 11k on top.

I prop the engines to the 3k - 11k range. It seems to work best.

< Message edited by meaden -- 4/1/2007 5:32:57 PM >

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It was a gravitational altitude correction. AMA 82823

(in reply to SigMan)
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RE: "Tachometer Readings for Glow Engines" - 4/1/2007 5:30:51 PM   
SigMan



Posts: 722
Joined: 6/27/2004
From: Boonville, IN, USA
Status: offline 		i typed "tachometer readings" in the search engine , and only my thread come up..Bill.

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Club Saito Member #1
AMA# 542304

(in reply to BillS)
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RE: "Tachometer Readings for Glow Engines" - 4/1/2007 5:50:25 PM   
MikeL



Posts: 2363
Joined: 3/8/2002
From: Bloomington, MN, USA
Status: offline 		You might want to try just looking when it comes to forums, rather than using a search engine.

http://www.rcuniverse.com/forum/forumid_173/tt.htm

(in reply to SigMan)
       Post #: 5

RE: "Tachometer Readings for Glow Engines" - 4/1/2007 8:34:27 PM   
DaveInLA


 

Posts: 266
Joined: 9/19/2006
From: Alhambra, CA, USA
Status: offline 		Based on a couple posts here, it seems that the OS 52 Surpass has almost the same high end as the Mag 61 on 12x6 (though different prop brands). Is that right?

(in reply to MikeL)
       Post #: 6

RE: "Tachometer Readings for Glow Engines" - 4/1/2007 10:00:54 PM   
Munkster



Posts: 58
Joined: 3/30/2007
From: USA, USA
Status: offline 		You can have identical setups in four different locations around the country or world for that matter and your readings can be off up to 2000rpms. If your numbers are lower than anothers, you could be fooling with that engine trying to obtain something that will never happen.

< Message edited by Munkster -- 4/1/2007 10:02:05 PM >

(in reply to DaveInLA)
       Post #: 7

RE: "Tachometer Readings for Glow Engines" - 4/2/2007 1:16:16 AM   
meaden



Posts: 622
Joined: 1/27/2006
From: Decatur, GA, USA
Status: offline 		If I tach my OS 52 with a 12x6 over 10k on the ground it's to lean in the air. Atlanta is only 1k ft or so above sea level.

_____________________________

It was a gravitational altitude correction. AMA 82823

(in reply to Munkster)
       Post #: 8

RE: "Tachometer Readings for Glow Engines" - 4/2/2007 1:59:32 AM   
Munkster



Posts: 58
Joined: 3/30/2007
From: USA, USA
Status: offline 		Mainly referring to those giving numbers from higher elevations

(in reply to meaden)
       Post #: 9

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