chrilla
08-10-2005, 05:27 PM
Can anyone help me with a problem.I have rebuilt a speed vee to in board and using a brushless Mega 22/20/2 and Graupner Hydrospeed Flexdrive and was hoping for some true speed, but the only thing that happends is that the prop is spinning in the air.I have tryed to lower the prop and it helped a little but when it start to go fast the prop just reving in the air.I have seen some of you guys on this forum racing with monos and thay have the propshaft in line with the bottom of the hull,if i do that the boat wont move at all.
:confused:
A speed freak from Sweden
Chris LaPanse
08-10-2005, 05:47 PM
What do you mean the boat won't move at all? The prop should be in line with the bottom of the boat, and should come out of the transom.
chrilla
08-10-2005, 05:55 PM
Yes i trayd that at first but the prop just sucking air even that it is under water.I´m thinking that maybe the prop is to large it is a 42mm plastic,or is the hull just not right for inboard.
MikDee
08-10-2005, 10:54 PM
Get a strightedge, a ruler, or something like that, lay it along the bottom of your hull lengthwise and alongside the outboard drive, then move the outdrive up or down until the prop hub, & shaft, is straight and 1/2 way below the edge of the ruler, and the other 1/2 is above the edge of the ruler, this way it is "surface drive" or 1/2 way submerged.
And, Only If need be later, lower it a bit more so that just the prop hub is in the water. Also make sure your propshaft is perfectly straight (parallel with the hull bottom)
*Rereading your post, as long as the keel on the bottom of your hull is not rounded from front to back (known as a rocker), you should be fine.