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Engine basics => Engine set up tips => Topic started by: Brian Thwaites on January 28, 2008, 03:54:14 PM

Title: What Size Prop ??? Merco 61
Post by: Brian Thwaites on January 28, 2008, 03:54:14 PM

Should find my answer here. Suggestions as to what sizes to try for hauling round a Magnum.
Thanks in advance

Title: Re: What Size Prop ??? Merco 61
Post by: Bill Hummel on January 28, 2008, 04:34:20 PM

Hi, Brian,
   I've had success with 13/6 BYO or Rev-Up on my Merco 61.  Seems to like about 8000-8200 launch rpm.  Classic 4/2/4 style engine run.

Title: Re: What Size Prop ??? Merco 61
Post by: Gary Anderson on January 28, 2008, 04:50:51 PM

Hi Brian, I use a 13/6 APC turning 8100 to 8400 rpm's on my merco and she runs and flys great. Lap time is 5.2 seconds on 60 foot lines. A Merco with a Magnum is a great combination. Mine will do the pattern using a 6 1/2 ounce tank. Mine weighs out at 64 ounces. Have a great day, Gary