[tntwill]

ok 35 merc 2 stroke 14 ft boat 8500 rpm yikes i think. With a tiny tach 600 lbs in the boat weight of 4 of us. Gps says 18 mph wot.
Is this good or too high of rpm if tach is right.

 

[Brett]

8500 rpm yikes

Yowza! must be a racing motor...


sumptin' tells me y'er tach's a bit off. ;D

I'm guessin' the real rpms are at 4250.

 

[tntwill]

how would i test it?

 

[Brett]

I use a shop tach for small outboard work

http://www.google.com/#q=laser+tachometer&hl=en&prmd=imvns&source=univ&tbm=shop&tbo=u&sa=X&ei=4MmmT8TABcrqtgePyND_BA&sqi=2&ved=0CMwBEK0E&bav=on.2,or.r_gc.r_pw.r_qf.,cf.osb&fp=fb64cf876c794163&biw=1280&bih=577

 

[topnative2]

great idea!!!!!!!!!!!!!!!!!