Miss Vegas Super MOD Build Project

[opio]

hey travis ya know i love your work but what are you talking about by wanting to add ride pads to the center section? are you talking about the tub? when you mentioned removing it did you mean like i did? well my thoughts are that the center section should not be touching the water anyway so adding pads in the center would cause issues with drag, i know from first hand experiance that removing the tub added some speed with more lift, but its been a bear for me to tune lol!

 

[GUPPY]

I kinda like the looks of this one but Travis has a good idea.

or how about this one??

 

[opio]

i knew you would show that lol when you going to make me one? ha nah im staying stock! keep up the good work Travis!! (<<< to get back on subject)

 

[GUPPY]

Jeremy you know I couldn't resist......... :lol: :lol: :lol:

 

[tampa1330]

hey travis ya know i love your work but what are you talking about by wanting to add ride pads to the center section? are you talking about the tub? when you mentioned removing it did you mean like i did? well my thoughts are that the center section should not be touching the water anyway so adding pads in the center would cause issues with drag, i know from first hand experiance that removing the tub added some speed with more lift, but its been a bear for me to tune lol!

Yeah I guess you're right. The center section shouldn't touch the water at all. A perfect ride looks something like this.......

In that you picture you can almost see clear under the hull to the other side. The only part of the hull touching the water is the shadow. What I was talking about is adding steps in the center section. Kinda like you see on an offshore boat something like this.........

You can see the stepped design in the boxed in area. Reggie Fountain designs his race boats with steps not only to reduce drag but to change the ride angle as the boat begins to plane. Hydrodynamics on offshore boats are much different than a flat bottom boat. Boat the speed theory remains the same, you want as much of the boat in the air as possible while maintaining enough surface area in the water to maintain control of the vessel. I think adding steps to the bottom of the center section, or the tub, would reduce the wet surface by introducing more air under the center section. Just a thought.

Now removing the entire center section just might be the solution, but i've never tried it. I've been satisfied with the ride angle on my first Vegas so I didn't want to change it too much. Now when you say it's been a bear to tune what exactly do you mean? ride angle, engine mixture, turn fin, CG, strut height /angle, exactly what was difficult to tune?

 

[rbeyer]

Unlimited Hydroplanes teams (well, mainly the Bernie Little Miss Budweiser team) spent a lot of money designing the current hulls used by most teams. It seems to me that patterning the center section after these boats is the best thing to do.

Rick

 

[tampa1330]

Unlimited Hydroplanes teams (well, mianly the Bernie Little Miss Budweiser team) spent a lot of money designing the current hulls used by most teams. It seems to me that patterning the center section after these boats is the best thing to do.
Rick

Rick,

I agree with you on that point. Start with what works best and go from there.

Travis

 

[opio]

hey travis,

im having a hard time getting the front end to stay in the water, i made a front end radio box that helped, i have not had a lot of time to focus on the strut depth and i needed better turn fin/ rudder, so it might not be that hard to have a good ride with good hardware, also i had swapped out my stock aqu .18 for a modded cvr-m, its a screamer so i needed adjustments from the get go.

 

[Harald1966]

What was the top speed before and after you modified the Vegas?

 

[tampa1330]

hey travis,
im having a hard time getting the front end to stay in the water, i made a front end radio box that helped, i have not had a lot of time to focus on the strut depth and i needed better turn fin/ rudder, so it might not be that hard to have a good ride with good hardware, also i had swapped out my stock aqu .18 for a modded cvr-m, its a screamer so i needed adjustments from the get go.

What prop are you running? Maybe try a three or four blade prop.

 

[tampa1330]

What was the top speed before and after you modified the Vegas?

Unfortunately I did not get a chance to run this boat prior to starting the mod build. This boat came damaged from the factory and the hull was replaced by the manufacturer. On this one I just started out with a bare hull.

 

[Harald1966]

What about now?

 

[tampa1330]

What about now?

I haven't completed the build yet. I should be posting more pictures and steps in the next few weeks. right now I'm getting my fast boats ready to race. I am doing a before and after article in RCBM. That won't be published for a while but I'll be sure to post a thread here to let everyone know.

 

[tampa1330]

I haven't had much time for this build lately but I've made some progress in the past few days. I'll be posting some more pictures and narratives in the next few days. Right now I'm printing the bottom and getting the cowling ready for finishing. I'm still waiting on my NACA ducts. I might just have to make my own.

 

[tampa1330]

I've finshed the first layer of filler to blueprint the bottom and I've shaped the canopy to get it ready to install the NACA air duct.

To blueprint the bottom I had to add some filler. The bottom comes so warped that if I just sand it I'll end up sanding through the glass work before it gets even close to flat. On this build I just used some polyester resin and 1/3 microballoons and 1/10 polyester thinner for spraying. Then I painted all the wet surfaces using a brush. Next I sanded the bottom with a sanding block I fabricated to fit the bottom of the hull. Using 100 grit paper I sanded until I started to reach the original hull coating. Here you can see where the white shows through.

After sanding I used a wet soapy cloth and wiped the surfaces clean and dried it. Then I let it sit for a few hours to let all the moisture evaporate. Next with a permanent marker I circled all the areas that still had a slight shine. These are the low spots that will need another layer of filler. This way I can get a perfectly flat surface without sanding the hull too thin in spots.

Next I'll add another layer of filler thinned out a little more than before. I'll also use a smaller brush so I don't apply too much resin. I've already sanded down to the glass work in some spots and I don't want to loose too much strength in those areas. Then I'll come back with 100 grit and follow with a 150-200 grit over the entire boat. Then it should be ready for primer. On the canopy I'm still waiting on my NACA ducts. They were on back order and should be delivered this week.

 

[tampa1330]

Today I finally received the NACA ducts from MHZ. They look great. I think im going to use one on my sport 40 cowling. Today I cut the cowling and tacked the duct in place. I still need to glass it in and do some more shaping and finishing.

 

[tampa1330]

I've made some progress on this build. I've only been able to work on it in my spare time, so things are moving slowly but it's still moving right along. I'll post pictures in the next few days.

 

[tampa1330]

Here it is primed and sanded with 400 grit. I think I may do another light coat of primer or just touch up some areas. But for the most part it looks great.

 

[MattHench]

lookin good man ,was followin your build on the zone and then you disapeared !!!

 

[tampa1330]

lookin good man ,was followin your build on the zone and then you disapeared !!!

Matt,

I was booted from the Zone by the devil himself for starting the RTR hull topic here. That and for mentioning Andy Brown's CNC'd props. He also failed to award me my prizes for winning the build off. Be careful what do you or say on the zone I am not the first to have this happen. Anyhow. Thanks for the comments. I'm working on getting this build finished along with a few other projects. I'm hoping to get a show room finish on this one. So it's taking some time. I'll have more coming soon.

Travis