Offshoreonly.com - trs gear ratio

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TylerBurich

09-24-2007 03:58 PM

trs gear ratio

Throttle up is trying to help me calculate prop slip on my 88 formula 311. Boat has merc 420's with velvet drives and trs outdrives. What is my gear ratio? I'm running 68.3 mph at 5200 rpm with 23 pitch mirage props. Any help would be appreciated, Julie is not familiar with the 420 setup. Thanks guys
Tyler

merlin

09-24-2007 04:22 PM

trs

1.50

TylerBurich

09-24-2007 05:47 PM

thank you, just curious how i can confirm this, it's gotta be on the drive somewhere....???? right?

Biggus

09-24-2007 06:46 PM

Quote:

Originally Posted by 454captiva (Post 2283001)

thank you, just curious how i can confirm this, it's gotta be on the drive somewhere....???? right?

1.50:1 was the only ratio for the TRS

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