I am deadly serious
there is no way that engine is screaming at anything like 7 grand.
and no way is that boat doing anything like 50mph in that video.
Now before you start thinking im wrong, take a look at this pic below, its a speed record set in 2009 and still stands today
this fella sold me the prop that made this record ,its a 13 3/4 x 23 pitch running flat out on a e-tec 90
on a phantom 16 powerboat.
Its not a not a toy its serious piece of kit and the speed record is there at a tad under 50mph.
see for yourself
Attachment 53981
and your trying to tell me that a home made boat with just a 30hp is faster than one of the best racing boats ever made with a 90 -etec on the back !!!!!!!!!
i think your gps is telling you very wrong.
Now also the tiny tac is mainly for go carts where the revs go very high,these are not nmuch good below about 9 thousand revs and even then can be very poor for acuracy.
Get a merc rev counter and get someone with a good workshop gun to calibrate it with.
i would say you revs in that video are around 5300 if your lucky.
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