45 JAE GT & K-45

[Buckshot]

The foam is Divinycell H-45. Ian Folkson in Slovenia built the tank, I’ve been using them in all my current outriggers and they are the .

 

[Terry Keeley]

You can see that the bushing is keyed in place.

Thought that's what I saw there, nice touch!

Great job Buck, you're gonna be tough to beat in Cinci!

 

[Mike Betke]

Thought that's what I saw there, nice touch!

Great job Buck, you're gonna be tough to beat in Cinci!

He's going to have to enter to be beat. Come on Buckshot, I told you, don't make me threaten you with a good time!

Boat looks great, it will be a top contender.

What pipe and carb did you end up using with that motor?

 

[XtremeRcBoats]

The foam is Divinycell H-45. Ian Folkson in Slovenia built the tank, I’ve been using them in all my current outriggers and they are the .

Did you use the foam for extra floatation? Have not seen it before in JAE's, have only seen it in Andy's riggers.

 

[Buckshot]

Did you use the foam for extra floatation? Have not seen it before in JAE's, have only seen it in Andy's riggers.

I did it for a few different reasons, saving weight wasn’t one unfortunately. I figured it would add more surface area for sticking it to the bottom of the tub, figured it might stiffen the ski overall, and flotation was an added benefit. I have half a mind to make ski with a little taper on the sides like the SGX skis.

 

[Buckshot]

He's going to have to enter to be beat. Come on Buckshot, I told you, don't make me threaten you with a good time!

Boat looks great, it will be a top contender.

What pipe and carb did you end up using with that motor?

The D-13 GP Series race in Atlanta is the same weekend as the Nitro Nats this year. Unless I win the lottery or someone wants to sponsor me, I can’t make every race. Trust me, I would if I could!!!!

Never doubted my chances.

Pipe is a CMB nitro pipe w/Rum Racer muffler.
Carb is a Zoom by the late Charles Purdue.

 

[XtremeRcBoats]

I did it for a few different reasons, saving weight wasn’t one unfortunately. I figured it would add more surface area for sticking it to the bottom of the tub, figured it might stiffen the ski overall, and flotation was an added benefit. I have half a mind to make ski with a little taper on the sides like the SGX skis.

I like the idea with the foam, will do the same on my JAE21OB.
What would be the benifit of the taper you think?

 

[Mike Betke]

The D-13 GP Series race in Atlanta is the same weekend as the Nitro Nats this year. Unless I win the lottery or someone wants to sponsor me, I can’t make every race. Trust me, I would if I could!!!!

Never doubted my chances.

Pipe is a CMB nitro pipe w/Rum Racer muffler.
Carb is a Zoom by the late Charles Purdue.

I hear ya Buck. I've been selective as well in the past. Can't fit it all in. I'm going to both nats this year. We got Airbnb's to split up among 3 people for both and that helps a lot with the cost.

Boat looks great. It's good to see that someone can build a very competitive boat with pretty much readily available parts and not have to send anything out for hop ups. I would think the Speedmaster carb will be just as effective as the zoom on this application. I've used both types of carbs and they are very similar. Thanks for sharing this information for the model boating community to see!

 

[Buckshot]

I like the idea with the foam, will do the same on my JAE21OB.
What would be the benifit of the taper you think?

Reduce ski width.

 

[Brandon Atwell]

Reduce ski width.

Another cool idea is the KEPS straked Ski, allows you to keep the same foot print for stability but reduces surface contact at the rear end. Wouldn’t mind testing it on other running surfaces as well.

 

[Buckshot]

I’ve been asked some of the same questions by a few people so I’ll post here. There are no secrets regarding this project since it is to entice others to build.
The motor in the video and the photos are the same.
Nothing has been done to it except a head clearance adjustment.
The engine comes with three head shims: (2) .003” & (1) .009”. With no shims the clearance is ~.002” so I removed the .009” shim to have ~.008” total clearance.
Nothing else in the engine has been modified at all.
The carburetor I’m using is ~11mm I.D. and is what I had laying around. Since they are no longer available I strongly suggest ordering one from Speedmaster. Or any Carb that fits the Nova .45DD’s will fit this engine.
Can it be bigger? Sure. Will it be better? I don’t know, try it and find out.
Any other questions, ask here.

 

[Ron Zaker Jr]

I did it for a few different reasons, saving weight wasn’t one unfortunately. I figured it would add more surface area for sticking it to the bottom of the tub, figured it might stiffen the ski overall, and flotation was an added benefit. I have half a mind to make ski with a little taper on the sides like the SGX skis.

watch tapering the ski,it may suck water up the the side of it. Just saying.

 

[Buckshot]

watch tapering the ski,it may suck water up the the side of it. Just saying.

Good point.
I'm not ready to start modifying the boat yet, It's pretty good so far and works as intended. I'll race it this season as is and see what happens. I'll update this post with any changes I make.

 

[timothy johnson]

Hopefully some new boaters will see this post and consider a similar build.
I think Buckshot has done everything possible to keep this build simple and most of all stock.
As a RC group we owe a big thanks to Zip Kits and Al Hobbs for their support of our hobby.
Lastly Buckshot has shown you can build a competitive heat racing boat for a lot less than some other choices.

 

[Terry Keeley]

What pipe and length are you running to go 86 mph?

What prop?

Is that the Futaba GPS speed readout?

 

[Buckshot]

What pipe and length are you running to go 86 mph?

What prop?

Is that the Futaba GPS speed readout?

CMB Nitro pipe @ 9.5” measuring from ~CL of the cylinder (side of the case) along the side of the header and pipe to the seam.
ABC2219-19-38 @ 4.6” by Andy Brown
It’s a SkyRC GPS. Had it in my twin when I was in Valdosta last month and it was +/- 2-3 mph. Close enough for this kind of exercise.

 

[Buckshot]

Hopefully some new boaters will see this post and consider a similar build.
I think Buckshot has done everything possible to keep this build simple and most of all stock.
As a RC group we owe a big thanks to Zip Kits and Al Hobbs for their support of our hobby.
Lastly Buckshot has shown you can build a competitive heat racing boat for a lot less than some other choices.

Thanks Tim.
YES! Everything in/on this boat is readily available to anybody from various vendors, which I think I have listed most of them, if I’ve missed any just ask and I can tell you where to get it. With the exception of the zoom carburetor, pipe mount and the little “cowl induction hood scope”.

 

[Tim Kish]

Love that you're sharing everything Buck , can only make us stronger

 

[Terry Keeley]

CMB Nitro pipe @ 9.5” measuring from ~CL of the cylinder (side of the case) along the side of the header and pipe to the seam.
ABC2219-19-38 @ 4.6” by Andy Brown
It’s a SkyRC GPS. Had it in my twin when I was in Valdosta last month and it was +/- 2-3 mph. Close enough for this kind of exercise.

Cool, gotta try some of those ABC props.

Thought it might be the SkyRC but the app looks different than mine, they are very accurate when I compared side by side to the SM Modellbau unit in my SAW boat.

 

[brad nichols]

Great build and running boat!!

Brad