New P Sport Hydro 2015!

[Shooter]

Here are some vids and pics of the 2014 Design/Baseline:

https://www.youtube.com/watch?v=XNqsykx5ILo
http://youtu.be/LOq1bfLUj1I <-- mojo racing vid (I'm far from a specialist, Bob!!!!!!lol)
https://www.youtube.com/watch?v=0SccTIKi0mY <-- Michigan Cup 2015 Practice

Well, I had a lot of fun last year with the faster/larger P Sport hydro class. Based on the success of that boat, I’m going to design and build another one this winter (with a few tweaks).

Most of the CAD work is done. The new version will inclde the following changes:

1. Drop nose profile for a meaner, more aggressive look.

2. Dedicated motor mount perch built into the frame for easy motor installation/removal via flat aluminum plate. (built by an FE guy…for an FE guy! Ha!)

3. Dedicated servo mount location.

4. Center location marks on all frames for easy construction.

5. Angled air bleed design to reduce pressure under the hull (air inlet smaller than air outlet = less pressure underneath). With speeds we were reaching last year, we need to start limiting the lift on these hulls (IMO). The boat seems to run and turn better with the weight at the CG rather than a ton of weight ‘up front’ to keep her down.

6. Reduced weight (reliefs added to all frame supports)

Final Dimensions (V5.7)

Overall Length: 850mm
Overall Width: 430mm
NAMBA Legal P Sport

Accomplishments:
2015 Michigan Cup Undefeated Champ (thanks to a turtle!)
2015 MMEU Season Champ
2016 Michigan Cup Champ (Go Kabota Ken!!!)
2016 MMEU Season Champ

[kfxguy]

Very nice looking. You sell these or just the plans?

[Shooter]

Thanks. I could sell basic frame kits (no skin) for a small fee, but I'm waiting until I get a cowl design. Right now I am using the UL-1 cowl (see photo).

[Shooter]

Here is a close-up of the dedicated FE motor mount. A simple flat aluminum plate will bolt right into the angled frame. Center marks on the frame pieces will make a nice guide to drill the stuffing tube slot.

I'm hoping to start cutting some wood this week!

[flraptor07]

Deffinetly a well thought out design, can't wait to see the custom cowl and all the other little design tweeks.

[jfrancisco892]

[bozo586]

looking good pete,if it runs like the other ones your in again! get ready for orders!

[Todd Fleury]

I guess this is the "Chip" v2

[704Authentic]

Wow!

[Shooter]

I guess this is the "Chip" v2

Chip v5.2 to be exact. Where ya been, Todd? I lost another mirror off the UL-1 cowl and there was nobody to dive for it. Total bummer.

[T.S.Davis]

Isn't it fun combining your imagination with your skill? You can go anywhere and do anything. Think it.............. and make it happen. This hobby SO kicks ass.

I threw 2500kv at the old Whip last Saturday but as I've come to expect........ the SF speedo wouldn't run it. Not sure why I keep falling back into that trap. Still hope to run it one time before the water freezes.

If the Whip can't handle P the way it's built I may be bugging you for frames. The boat you ran this summer was a beast.

I did finally get the Q sorted back out BTW. Just needs a new tail feather.

[Todd Fleury]

"Chip", been trying to build a house. But, looking forward to next season.

[Shooter]

Terry - Is that a D wind 2500KV motor?? 'bout time you got the Q running again!

Finally got some time to cut some wood. Not happy though. The wood quality was horrid. A re-do is planned.

[Shooter]

Nevertheless, I couldn't resist fitting some parts together last night to see what she looks like....

Should make some nice kindling for tonight's fire.

[ray schrauwen]

I like the temp piece for the sponsons, nice idea! Makes a nice straight hydro. Any ideas on cowlings?

[detox]

Shooter, Look at this Whip sponson mod, it was designed to "reduce lift" for high speed SAW passes.

Is turnfin an option? These are getting hard to find.

[Shooter]

Interesting. I remember Mike talking about the possibility of that recovery pad hitting the rougher water on plane. That chamfer would solve the issue.

I would guess that chamfer would increase the pressure under the boat (more cross sectional area on the inlet side), and thus increase lift. Strange.

[detox]

IMO the curve of front sponson creates lift also. Maybe more than air going under the hull. If the front cross cross piece is shaped correctly (more down force) this should reduce lift and air going under hull.

Picture was posted by raptor347 Maybe you could contact him and ask?

[detox]

You can also increase sponson ride pad angle 1 degree more so that hull can plane or fly less wet. After increasing pad angle, strut will need to be ran deeper to level boat while running fast in water. Tail dragging or nose up attitude will cause blow overs...especially a lighter weight hull.

Adding Steeper ride pad on sponsons, level ride attitude, good COG and lower ride height (not too low) will help boat run fast and prevent too much air going under hull and causing blow overs.

Hydro Missile

[Shooter]

IMO the curve of front sponson creates lift also.

Good point.

[Shooter]

You can also increase sponson ride pad angle 1 degree more so that hull can plane or fly less wet. After increasing pad angle, strut will need to be ran deeper to level boat while running fast in water. Tail dragging or nose up attitude will cause blow overs...especially a lighter weight hull.

Adding Steeper ride pad on sponsons, level ride attitude, good COG and lower ride height (not too low) will help boat run fast and prevent too much air going under hull and causing blow overs.

Hydro Missile

Good stuff. I learned a lot last year about AOA and how the strut height can impact it. Good idea making the 1 degree ride pad change and then lowering the strut, getting the best of both worlds.

I don't mind a lot of air running under the boat as long as it's bleeding out. It's when it gets excessively trapped that causes problems (builds too much pressure underneath and results in excessive force upwards). The faster we go, the more it becomes a problem. Our scale speeds are ridiculous. All these flat bottom boats (no tunnel) are great at bleeding air. I think these angled vents on the V5 design (larger outlet than inlet) are going to work well, but only time will tell.

[ray schrauwen]

I've also added 1/8" ply to the tops and insides of the sponsons, blended into the front of the sponsons with sanding block.

Shooter, Look at this Whip sponson mod, it was designed to "reduce lift" for high speed SAW passes.

Is turnfin an option? These are getting hard to find.

[darryl whitman]

Shooter R u selling the frame kits yet? If so mp me , plz I like that boat

[Todd Fleury]

Chip, switching my p limited over to a P for next year

[LuckyDuc]

Nice looking boat, Pete! There should be a good crop of P Sport hydros racing next season. I've been anxiously awaiting the revitalization of this class.

[T.S.Davis]

Pete, .5y. Never got to run it. Was camping this past weekend with the Scouts. brrr.....rrrrrrr......rrrrrrrr.......rrrrrrrrr.

A new P Sport was not on my agenda but...................they look like so much fun. This would take me to five builds again this winter. Pushing my luck.

Sean, will you be making the trip to MI all by yer onesy this summer? Didn't sound like Doug was going to come out.

[LuckyDuc]

I'm sure that we'll be hitting some of our normal haunts next season. A lot of our travel plans depend on the race dates set for our local clubs. Those dates get finalized in January.

[Shooter]

I'm sure that we'll be hitting some of our normal haunts next season. A lot of our travel plans depend on the race dates set for our local clubs. Those dates get finalized in January.

hint hint. Need to schedule around those dates!!!

I'm still waiting on wood (be nice, Tom!). I haven't even gotten an update from them. Aggravating. On the other hand, I was able to fix some minor details in the model. This thing is really starting to come together nicely. Need to start working on a cowl design. I was thinking about making the buck on the CNC mill, but maybe a 'stack' of laser cut pcs and some sanding would do the trick.

[flraptor07]

I'm really liking this boat, the more I look at it the more I like it. Hurry up with that cowl design, I'm thinkin' I want one of the kits when you get them going.

[Shooter]

Thanks. Here is a picture of the 'drop nose' sponson I was referring to earlier. It doesn't look like much now, but when it's together, I'm hoping it takes the looks of the ski boat I modeled it after..... check out the nose design. Absolutely beautiful.