50" P1 Fountain mono build

[Rocstar]

Spinning the props out will help dramatically with handling, however the boat will ride lower in the water. Spinning them in helps get the boat out and on top of the water, but can cause spin outs on some mono hulls.

[Fella1340]

hey Axel, how's your fountain coming along! Did you stick with the outrunners? Fell free to post pictures/video hero if you've made some progress. The thread might as well be doing something productive:-)

[Andrewc]

Think my memory is finished as Rocstar has already told me months ago to run the props out rather than in and I remembered it as the opposite. Will change everything around before the next run. Cheers.

[mickieb49]

If it is the hull from ebay, i have one of those, check the hook in the keel, you will find that the bow of the boat is lower than the ride surfaces, this wil cause it to bow steer. I am in the process of cutting out a wedge in the nose to bring up the bow of the boat so it is higher than the ride pads. These hulls are cheap for a reason, untested , lite layups.....

[Fella1340]

Mickie, what setup where you running in the hull? How did you find it handled at speed? Do you have any video of it on the water? Did any other issues arise that need to be looked at as well? I'd like to know as much as possible before I go any further with the hull. Thanks.

[Fella1340]

I have been looking at stepped hull mono this afternoon, the fullsize versions and the rc ones. All appear to have a lower bow than rear ride section. Some more obvious than others, the European rc stepped race mono being the most obvious where the rear of the boat can be an inch or more higher than the bow section. I checked my hull but see no signs of a hook in the bow or anywhere else. Sitting flat the bow is inline with the rear of each step including the transom. This has me confused, what am I supposed to be seeing? Can you post pictures of what your doing to your hull Mickie?

[mickieb49]

i will try to get some photos as soon as i can.
basically the area infront of the fwd step needs to be 1/4 " higher. or you can take out some in the transom. I can barely keep mine straight, and dont even try to do a nice turn, that will just be violent.
My COG is set at 25", setting it further aft helped heaps.

[mickieb49]

i will try to Double post.....

[Fella1340]

Thanks Mickie, any information/pictures you can post will be most welcome.

[axel]

Well Mickie YES and NO to what you said
1. It is not a stepped hull it has a straight Keel with sprayrails !!
2. Yes mine has a hook on the left and more on the right side of the last section.
Setup should be done as by a non stepped hull, careful you have to act with the trimmtabs as you have to set them in an angle up to have them parallel to the Keel line.If you put them in 90 to the trans you will get bowsteering.

[mickieb49]

Axel, have you run yours yet?
I am open to what ever ideas people have. The hook in mine is like you said mostly in the last step, so it acts like a wedge lifting the transom and forcing the nose down.
Cheers

[Fella1340]

I still don't understand this hook you speak of. If I sit the hull on a flat surface the trailing edge of the bow, the trailing edge of the middle step and the transom all run on the same line. It sits just like it would if it didn't have the "steps". Are you saying the middle steps trailing edge is higher than than the transom causing it to rock if set on a flat surface? Sorry for being a little thick here guys. A picture sure would help! Thanks for bringing this up, I want to see where this goes.

[Fella1340]

Axel, can you post a picture of what you are explaining for the trim tabs. I have mine installed as you normally would on an rc boat. My "steps" run true as well, if I put a straight edge running bow to stern on each each section they are flat, no concave or convex surfaces.(less than 1/64) It was one of the things that surprised me in a good way when I checked the boat over when I received it. Still the same after inlay.

[mickieb49]

If you look at the rear step, it almost looks like a wedge, this will act like a trim tab and lift the stern whilst running. The rear portion needs to be more of a level plane and not pointed down.

[Fella1340]

I see what your saying....not so good.