Prop slip

[Bigmuz7]

Having searched a good number number of threads through the forum, I've found calculators to help me work out what mine is, but I dont understand the importance of what it means ? and how it is relevant ?, and how i can improve my set up.. Is slip bad or good, and when does it become a detriment to performance ? My 275 does 5800 rpm witha 1.85 ratio leg that achieves 62 mph tops ?

[codprawn]

What pitch prop is that?

Obviously the lower the slip the better. 10% is considered pretty good.

[Dirk Diggler]

Originally Posted by codprawn

Obviously the lower the slip the better. 10% is considered pretty good.

Why's that then, I currently have 15% slip, but i bet mine is quicker than yours!

[captnjack]

basically rpm x pitch = theoretical distance travelled in one revolution

distance actually travelled in one min (6.2 miles converted to inches) / theoretical distance = a percentage

85% or better is good. Slip is sorta good and bad, depending on what's going on at any given moment with the engine. You want a little when starting from a dead stop to avoid lugging the engine. While running consistently, you want as little slip as possible though.

[Downhilldai]

Originally Posted by captnjack

basically rpm x pitch = theoretical distance travelled in one revolution

distance actually travelled in one min (6.2 miles converted to inches) / theoretical distance = a percentage

You've been down the pub, haven't you Captn?

[codprawn]

Originally Posted by Dirk Diggler

Why's that then, I currently have 15% slip, but i bet mine is quicker than yours!

Doh I would never have guessed.......

[Dirk Diggler]

Originally Posted by codprawn

Doh I would never have guessed.......

Probably not as fast as your mates though!

[codprawn]

Originally Posted by Dirk Diggler

Probably not as fast as your mates though!

Ahh you know Jonathan Jones as well then........

[Dirk Diggler]

Funny enough, yes, I do, rather well infact!

[codprawn]

Thought you would somehow.