BBY's 1/8 Pro Boat build

[RandyatBBY]

This is the start of the build for a Sport Hydro to run against the gas guys. I wanted a hull that I did not care if they got excited and ran me over again. This Pro boat was aquired on RR for the price of a 8L Hacker motor about four or five years ago.


Hear is the motor that will be pushing the boat. Retail $169.00 from me, so this will be a inexpensive build. Not sure of the ESC I might use a China 180 or 200 model. I have two 40.160 but one is going back for repair.

[calcagno45]

Whats the specs on that motor? Looks interesting.

Great re-conditioning of that hull!

[RandyatBBY]

Size Outside dimensions of motor 63.29 X84MM
Cooling chamber dimensions 58X37MM
Kv 650
Shaft size 8MM
The Kv is 650rpm
Max watts 10,000
Max amps 175 to 200
Max volts tested was on 15S and it pulled 8300 watts on a big fan jet.
Running at 62MPH in a Sport Hydro it pulled a average of 65 amps and spiked to 110 amps

[crabstick]

holy crap! that is awesome...

does the motor have a cooling reservoir in that front block Randy?

[RandyatBBY]

holy crap! that is awesome...

does the motor have a cooling reservoir in that front block Randy?

Yes a big chamber! I will be building the hardware tomorrow. I am going to test the bottom as is in Primer I think that the botorm will need to be modifyed to keep from blowing over at high speeds.

[AndyKunz]

Looks like a fun project, Randy!

Andy

[yurkanip]

Any updates? I am looking forward to your build thread, to continue.

[RandyatBBY]

I am still fine finishing the hull. I sand blasted the paint off the hull and Patched the rough parts with Epoxy resin and Milled CF with a small amount of Cab-o-sil. Then I have been Bonding the surface for the fine finish. I filled the Pro Boat strut mount with the resin and bondo. I probably should have taken some pictures of the bondo area. Sorry I forgot. Durring the finishing I re primer I do have a few pictures of that. I sprayed the top yesterday and the Bottom today.

Rough spots like this will be bondo.

[AndyKunz]

How are you going to paint it (color scheme)?

Andy

[RandyatBBY]

How are you going to paint it (color scheme)?

Andy

I am still thinking about that not decided yet, It will be run in the Gas Sport class so it is a little open.

[RandyatBBY]

The build has been on hold for a little while I have a few props comming and I will get back to it.

[m4a1usr]

The build has been on hold for a little while I have a few props comming and I will get back to it.

Is that a Lobster with the cowling cut back? Awesome paint job!

John

[j.m.]

Dern... 9 boats and one car in a picture that probably only covers 10% of your shop??

[RandyatBBY]

Hear is is before my trips to the nats and the saw's

[RandyatBBY]

Dern... 9 boats and one car in a picture that probably only covers 10% of your shop??

I have over 130 boats and 40 to 50 cars. It is packed a collection from 1985 and I hate to sell anything. Oh and that is just my sky light.

[j.m.]

Let's see here...

If you sold all your boats at an average price of $325...

That would get you $42,250. Not including all the masses of betteries, motors, escs, and other support equipment you have.

And is that an air cooled v-twin in your second pic? Might I ask what that's for?

[Darin Jordan]

Randy... You are making me think that maybe I need to contact ProBoat and see if they have an extra one of those hulls laying around that I could use to build a boat for the Nats... Hmmmm... could the Oberto live again???

[RIPFENCE]

amazing...pm me if you ever decide to sell any catamarans looking to buy one..how can you choose which hull to run on a given day? maybe a lottery or something

[RandyatBBY]

Let's see here...

If you sold all your boats at an average price of $325...

That would get you $42,250. Not including all the masses of betteries, motors, escs, and other support equipment you have.

And is that an air cooled v-twin in your second pic? Might I ask what that's for?

Sorry to pop your bubble it is a air compresssor motor. The sale of my junk should cover me when I kick the bucket. I have a few old cars too 1970 Mustang sports roof, 1974 Bronco trail rig, 1971 SS454 ElCamino and my daily driver a 1985 4Runner, this is what happens when you have been around for a while

[m4a1usr]

Hear it is before my trips to the nats and the saw's

Thats not a stock cowling. You made it way better especialy at the nose. They are a pain in the you know what to tape up decently. I like that! What motor?

John

[RandyatBBY]

Randy... You are making me think that maybe I need to contact ProBoat and see if they have an extra one of those hulls laying around that I could use to build a boat for the Nats... Hmmmm... could the Oberto live again???

I cut out the bubble for the Carb and I think it needs to vent the lift on the hull too It will be a sport boat for me more of a T Sport. I have a 6719 copmming for it.

[RandyatBBY]

Thats not a stock cowling. You made it way better especialy at the nose. They are a pain in the you know what to tape up decently. I like that! What motor?

John

The little screamer on 10s I hope for 18000RPM, I will have a inner cowling. Hear is how I will paint it, wish I had some wings.

[RandyatBBY]

amazing...pm me if you ever decide to sell any catamarans looking to buy one..how can you choose which hull to run on a given day? maybe a lottery or something

I am selling SC33 now I have a Yellow one started. It depends on the raceas to what I run. But, I have favorites. Like the Z-27 and my WE34. I will tke them out at a drop of the hat. The HRP belong to customers and by the time I am ready to get rid on my boats they are ready for the trash.

[RandyatBBY]

Back on it again this time I am starting on the motor mount fot the 12.5 HP beast. My lay out first.

The finished motor mount.

[j.m.]

So the boat has rails?

[RandyatBBY]

So the boat has rails?

It had rails in before I owned it. I now have sub rails that I put in with the MM.It will be better this way as long as it holds together more room to stuff cells. I am rebuilding the weak/ill designed parts in the rear of the transom now too.



The transom after cutting a access hatch


All the crap I had to take out and the hole it left.


It will need a lot of repair with fresh FG and CF. that is next.

[j.m.]

Ouch...

Proof of why you seal plywood with epoxy ^^

[RandyatBBY]

Ouch...

Proof of why you seal plywood with epoxy ^^

UPS did a lot of the damage to the hull shipping from Florida. The wood was covered with a lot of resin but the design sucked with a fixed prop under the hull mounting.

[RandyatBBY]

Repair done Just have to wait untill tomorrow to do more. Lots of Epoxy every whare,

[Brushless55]

Wow, that looks like a lot of work!