Miss Geico Lets see what this thing can do!

[JPriami]

Yeah. Right now i have a 1520 in there. The 1518 came today.
Can't wait to maiden this thing. I haven't even had it wet yet.

[JPriami]

Stuck inside today. So I sharpen, balance & polished the new prop for my collection.

[huse0054]

Hi JPriami, Looking awesome so far and can't wait for videos!!!

Did you fiberglass the outside or inside of the hatch? Were you happy with the results and do you think it will hold up? Any more pictures of the process?

Also, I am new to all of this and your prop looks awesome, I am looking at getting the same one but am torn between S/B one myself or buying one that is already S/B. Was it fairly easy to do? What would you recommend?

[JPriami]

I fiberglassed the inside of the canopy. Tape off the inside windsheild If your keeping it clear. Just rough the rest of the underside with sand paper and make some deep grooves so the resin has some nice rough surface to get ahold of. Lay out your fiberglass cloth and cut it bigger than the canopy. Cut an area out of it to allow for the windsheild. Clean the canopy where you sanded well with alcohol or another solvent. Mix your resin up. Brush some in the areas you plan on putting the fiberglass cloth on. Lay in in place push it in to areas with your brush then start laying more resin over the cloth. Try and keep air from getting underneath the cloth. It takes time and patience to get it all out and the cloth pushed into all the corners. You might have an easier time using Fiberglass mat instead of cloth. Once it's done and dry trim the excess cloth that is sticking out the sides of then canopy and where it's hard with resin you can take a dremel and sanding drum and smooth it out. You can also smooth out any roughness inside so you don't poke yourself later.

If you haven't done a prop b4 read up on it first. You will need a good balancer. I use sandpaper and files and do mine by hand.
Hope this helps.

Justin

[JPriami]

Tried today on one set of packs.

I got the wah wah's and wheelie stands. Lol.
Strut is level with bottom of sponsons and 0 angle on strut. Batteries half on the tray half off forward. I have flotation installed up front and cut it so there is support for the batteries to rest on.

[JPriami]

If the rudder in the prop wash is a problem then I can put another mount for the rudder off to the side.
But I hear mixed things about then wah wah and offsetting the rudder. Plus I was liking the equal turning in both directions from rudder being centered.



This pic was just a test setup of what I plan to do. Its all held in place with double sided stick tape in this pic.

Btw I hit 52mph on the testing today. Wasn't even at full throttle boat kept wanting to nose up

[Rumdog]

The offset rudder will turn well in both directions. You're not leaning into a turn like with a mono. It will also help straight line stability, and help to hold speed through turns.

[TheShaughnessy]

The offset rudder will turn well in both directions. You're not leaning into a turn like with a mono. It will also help straight line stability, and help to hold speed through turns.

agree ^

as for your cog question, that is 9 inches from the rear.

[JPriami]

Just finished.



Also added 440 pushrod over the stocker.

[JackBlack26]

Someone mentioned COG is about 9" As a good start. Is that from the back of the transom or the back of the sponsons?

That is center of battery @ 9". The battery that far forward might cost you some MPH being that the boat will run really wet. What I did was mark 9" from the transom forward with a sharpie, them mark center on my LiPos and just line them up. From there, if necessary, move them forward to bring the front end down. I would suggest moving them forward 1/4" at a time. I run mine at 9 1/2"s to center of battery from the transom forward.

That rudder looks cool that way, but I would have left it in line. Find the CG of those batteries and it will smooth out and not want to pop wheelies, lol!

[JPriami]

I had the batteries really far forward today on the test run. And I have some good size packs. Two Hyperion G3 EX 3S 45C 5000mAh packs. plus the motor is a good bit of weight.
This is where they were when I first started, As you can see they are already past 9" forward. I moved then up about another 3/4-1" at the lake and it was still hopping. And if I were to hold the throttle at full it was going to blow over for sure.

[JPriami]

Here is a clip of the hiphop MG. Wish I had a camera man today. You would of seen it wheeling up many times. I was trying to go with the wind to reduce the chance of wind going against the boat to help blow it over.
Boat did stay dry as a bone inside I was happy with that.


YouTube

52mph but no where near wide open saddly.

Eagle tree says im getting about 3000 watts out of the system. so this little 30" boat has 4HP!

[Brushless55]

Awesome, that little sucker is moving!!

[Rumdog]

That is center of battery @ 9". The battery that far forward might cost you some MPH being that the boat will run really wet. What I did was mark 9" from the transom forward with a sharpie, them mark center on my LiPos and just line them up. From there, if necessary, move them forward to bring the front end down. I would suggest moving them forward 1/4" at a time. I run mine at 9 1/2"s to center of battery from the transom forward.

That rudder looks cool that way, but I would have left it in line. Find the CG of those batteries and it will smooth out and not want to pop wheelies, lol!

CG is measured from the transom forward. There is no purpose measuring your cells. You need to find the proper cg for the boat to ride with a good attitude.

Also, the inline setup is very inefficient. No reason to keep it. It is disrupting the thrust cone, adding lift to the stren, especially in turns where you are just wasting energy by thrusting into the side of the blade.

JP, how deep is your strut?

[JPriami]

I have the center of the propshaft at the same level as the bottom of the ride pads.

I was going to test the boat with the new rudder setup today. But it doesn't look like I will be able to get to the lake.