Blazer Marine Slingshot Build!

[JoePeters]

Dont forget to seal the baitbox lid where you drilled the hole.

Listen to Mike! whenever you drill a hole in wood it MUST be sealed again or you WILL get an ugly water stain stripe under your clear job. No big deal to shoot the lid when I do my next boat.Then you can have clear over the decal.
I tried to seal wood a couple times with CA after the drill job and water did eventually stain around it after a few seasons. better to use clear again or your epoxy to reseal the wood.YOUR BOAT IS LOOKING GREAT!!
PS "took it with him everywhere" wasnt meant in a bad way, just need to make people aware how clean you need to keep your boat durring the finishing process. "tell people hands off till its done"Heck-Im the one who always has nitro or oil or spraywax on my hands,It could have been me who did it to you. LMAO SEE YOU SOON

 

[Mario Johnston]

Back at it! Today I wrapped up the steering, with a 1/8" stainless rod and DuBro posts drilled to accommodate said rod.

 

[Ray Sametz]

Mario, they make those servo arms out of aluminum, might want to check it out. OMHO

 

[Mario Johnston]

My thinking behind keeping the plastic arm was maintaining at least one weak point that I'm ok with sacrificing in the event of a crash.
The servo is mounted to a hard 2mm carbon sheet, the 1/8 stainless rod is mechanically mounted to another hard point at the tiller arm, so no flex there. I feel as though a good whack into an unseen branch or buoy with the rudder could cause carnage somewhere between the rudder and the radio box floor without a part designed to break loose on impact (if the shear screw doesn't)

 

[Brad Christy]

Mario,

What I don't like (as if it's my decision ) is the "point-of-entry" offset of the pushrod relative to the end of the servo axle.

I would seriously consider this as an option...

Dubro Pushrod Clevis

Drill it to 1/8" and run a 6-32 form tap into it. Then run a 6-32 die over the end of your pushrod. Absolutely bulletproof, and allows you to keep the plastic servo horn.

I'd also suggest moving the clevis to the hole nearest the servo axle as possible, drilling a new hole if necessary. You won't need nearly as much rudder throw as you might think. If the turn fin is doing it's job, 5-7 degrees is about all you'll need.

Thanks. Brad.
Titan Racing Components
BlackJack Hydros
Model Machine and Precision LLC

 

[Mario Johnston]

Noted! I have some of those clevis connectors, will play with that idea some more.
Thanks again, Brad!

 

[Brian Spitzer]

Top shelf build Mario, congrats! Be sureto bring that with you the next time you come up to Indy to test.

 

[Mario Johnston]

Definitely, Brian! I'm anxious to show it to you guys in person!

New parts from Zipp today: these fuel bags are the perfect fit for the forward section.

 

[Mario Johnston]

This is kinda neat!
One year ago today, my boat looked like this:

Still lots to do, back to work!

 

[Lay26]

boat looks good. nice job but wait till you start running......then you will see work.

 

[Mario Johnston]

Routing water lines today

 

[Mario Johnston]

Picked up the on/off switch I wanted today and wrapped up the radio box. So much room for stuff in here!


Sealed up nicely front and rear

 

[Wasted wages]

Mario, what are you mixing with your epoxy for filler? Doesn't look like standard micro balloon's..

 

[Mario Johnston]

West System 406.
Same thing I use for fillets in corners

 

[Wasted wages]

Thanks!!

 

[Mario Johnston]

Got my shafts in the mail today.
Cut (and soldered) to reasonable length.

 

[dave roach]

Mario
You have a PM

Dave

 

[Mario Johnston]

Pro-Tip:
Fluorescent vinyl under your cowl will make it easier to see in the event of a breakaway

 

[Rich Jones]

Picked up the on/off switch I wanted today and wrapped up the radio box. So much room for stuff in here!

View attachment 288351
Sealed up nicely front and rear
View attachment 288349
View attachment 288350

Mario how is that throttle system working? I bought one to use on my Backlash. I also can go with the standard bellcrank setup but you inspired me to try one of these.

Rich

 

[Mario Johnston]

We'll find out real soon, Rich!
I got the idea from Jerry Childers in the club, he has one in his thunderboat and it works great.
Mine is all set up and ready to rock. Just anxious to get this thing in the water already!
I also have bell crank parts on standby.