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Engine basics => Engine set up tips => Topic started by: Manuel Cortes on October 10, 2006, 05:45:47 AM

Title: Side mounted Tigre G21-46
Post by: Manuel Cortes on October 10, 2006, 05:45:47 AM

Hello all:
For a side mounted ST46, what is the correct tank height?, please, refer to shaft line or venturi line, as they differ in these motors.
Thank you all in advance!!
Manuel.

Title: Re: Side mounted Tigre G21-46
Post by: Bill Little on October 10, 2006, 06:40:37 AM

Quote from: Manuel Cortes on October 10, 2006, 05:45:47 AM

Hello all:
For a side mounted ST46, what is the correct tank height?, please, refer to shaft line or venturi line, as they differ in these motors.
Thank you all in advance!!
Manuel.

Hi MAnuel,

Last time I ran a ST 46 on a profile (Shameless) we had the tank set about 1/8th above the shaft centerline.  I would start out there. 

Bill <><

Title: Re: Side mounted Tigre G21-46
Post by: Ralph Wenzel (d) on October 10, 2006, 07:28:08 AM

Quote from: Bill Little on October 10, 2006, 06:40:37 AM

Hi MAnuel,

Last time I ran a ST 46 on a profile (Shameless) we had the tank set about 1/8th above the shaft centerline.  I would start out there. 

Bill <><

H-m-m-m  That puts the C/L of the tank almost exactly in line with the C/L of the DeSaxe intake, doesn't it? Same setup for the Fox .35, which also has a DeSaxe (offset) intake. Does this mean that the tank C/L should (almost) always be aligned to the vertical center of the intake? Even on engines with a centered intake?

Title: Re: Side mounted Tigre G21-46
Post by: wmiii on October 10, 2006, 12:55:19 PM

When the engine is sidemounted the venturie is below the shaft centerline. At least thats what my ST .46 looks like.

 Walter

Title: Re: Side mounted Tigre G21-46
Post by: L0U CRANE on October 10, 2006, 01:06:00 PM

To: Ralph's reply#2

I recall some Fox engines in the 1950's that had a deSaxe cyinder offset, toward the exhaust side, but I never saw a Stunt 35 with choke offset as it was on certain ST engines.

The tank offset for sidewinder mounted Fox Stunt 35s just is, and there's no easy, obvious, evident reason explaining it. It just works.

Strange that the same offset in the same direction works for a sidewinder ST46... and thanks for that tip!

Title: Re: Side mounted Tigre G21-46
Post by: Manuel Cortes on October 10, 2006, 01:22:18 PM

Thank you all!!
I´ve a good starting point in my Cardinal.
(By the way, Stalker 46 need 3/16" offset to run OK).
Regards.
Manuel.

Title: Re: Side mounted Tigre G21-46
Post by: Ralph Wenzel (d) on October 11, 2006, 06:26:43 AM

Thanks Walter and Lou for "straightening me out. The Fox Stunt .35 does indeed have a cylinder offset to the bypass side, while the ST .46 has the venturi offset to the exhaust side. Very curious, indeed, that the tank C/L location would be moved in the same direction to obtain consistent running upright and inverted . . .

Title: Re: Side mounted Tigre G21-46
Post by: Gene O'Keefe on October 13, 2006, 12:16:50 PM

I just measured one of my setups and the tank was 3/16" above the shaft centerline.

Geno