Model Boat Mayhem - Forum

Dry Dock / Shipyard: Builds & Questions => Pleasure boats, Sports, Race, Power and Leisure Boats: => Topic started by: john54 on January 24, 2009, 05:07:27 PM

Title: Prop Size
Post by: john54 on January 24, 2009, 05:07:27 PM
 {:-{  just a quick question I am a bit confused about the prop size of my boat it reads d42xp1.4 (dog drive)
I need to go up a size because of over revving so has anybody got any ideas? Am I right in thinking that 42 is the diameter xp is the pitch & 1.4 is the shaft size?
Also does anybody know where I can source props of this type.
Thanking you in anticipation :-)
John
Title: Re: Prop Size
Post by: omra85 on January 24, 2009, 05:24:49 PM
Hi John
You are right in that the 42 is probably 42mm diam, the 1.4 refers to the diam/pitch ratio which is the normal one for racing deep v's, the 1.2 being a 'sports' ratio and the 1.6 ratio being for hydros and riggers.
The shaft is likely to be 3/16".  You have probably got the equivalent to an X442 with the next size in that series being X445.
http://www.prestwich.ndirect.co.uk/octurapropellers.htm (http://www.prestwich.ndirect.co.uk/octurapropellers.htm)
Without a picture, I'm only guessing.
Another supplier is
http://modelmarinesupplies.co.uk/shop/index.php?cPath=55 (http://modelmarinesupplies.co.uk/shop/index.php?cPath=55)

Cheers
Danny

Title: Re: Prop Size
Post by: john54 on January 24, 2009, 06:22:06 PM
Thanks Danny
Now iam useing lipo 4s & she screams like a banshee so I do need to prop her up a bit.
Cheers
John
Title: Re: Prop Size
Post by: omra85 on January 24, 2009, 07:19:04 PM
If it's going FAST and doesn't actually catch fire ........  then NO  {-) {-)
I hope someone on here knows more about FE than I do  {:-{ %) %)
Danny