Originally Posted by max
ok so 5500 rpm is the mark for the e tec or am i wrong. so ill i have to trie this first, with the rebel im around 5200 to 5400 rpms trimmed out.
Sorry Max I have just noticed this post
. It is a known fact that the Rebel will run at lower RPMs that the same pitch Viper so if you are going from a 19" Rebel to a Viper then you will find that you can run a higher pitch Viper. You are almost at the correct RPM with your Rebel so if I was going to switch to a Viper I would look at going to either 20 or 21. Unfortunately it is difficult to say which. I would be tempted to go for a 21".
You must also check to see that your engine is high enough on the transom as the E-tec engines like to run quite high up, as a rough guide the plate above your propeller (anti ventilvation plate) must be about 2" above the bottom of the transom when the engine is fully trimmed in against the transom. The ideal setting is so that you can see the top of this plate when the rib is planning See here ->> http://rib.net/forum/showthread.php?...ion#post311192
If you want really good advice on setting up an E-tec then go and have a look at this forum.