Zipp 30" tunnel update

brad nichols · Feb 18, 2022

Nice looking boat!!

Shane Bastick · Feb 18, 2022

great job, colour combo is good

Billy Pirollo · Feb 22, 2022

Thank you all, can’t wait to get it in the water…

Billy Pirollo · Mar 13, 2022

First 2 batteries ran through today!

went out and came back with out issues!

Kenny Fairbarn · Apr 24, 2022

Got the g30 wet for the first time. Really fun to drive.

brad nichols · Apr 24, 2022

Nice!!

mr_fons · Apr 25, 2022

Is that the recommended setup?

Kenny Fairbarn · Apr 25, 2022

mr_fons said:
Is that the recommended setup?

I eyeballed the prop depth,angle, and COG but it should be close to recommended. Does it look like it's running too flat? This is my first tunnel so I have a lot to learn.

mr_fons · Apr 25, 2022

Kenny Fairbarn said:
I eyeballed the prop depth,angle, and COG but it should be close to recommended. Does it look like it's running too flat? This is my first tunnel so I have a lot to learn.

No, just curious.

Kenny Fairbarn · May 22, 2022

I have only had the G30 out a couple times but the cowl failed at the nose both times out. The bottom cracked and ripped out the first time (not a the seams but at the tab) then I reinforced the bottom of the nose with glass. Stuffed it in some chop yesterday and got a bigger crack through the side this time. Going to reinforce the whole nose with glass and fix but looking for other options.

I heard there was a carbon fiber cowl.... anyone have one for sale?

brad nichols · May 22, 2022

Mike Hughs has epoxy cowls available. It does look like it's riding flat but it is stable.

vanduzer · Jul 6, 2022

I got a special stumble block from Rod and tried it on a couple of tunnels. Did anyone else get get one and have success with them?

jaxracer · Jul 14, 2022

Geraghty said:
Read this thread in its entirety......

https://www.intlwaters.com/threads/food-for-thought.78045/
David Hall , as we speak , is currently designing an outboard motor adapter for .21 a car motor with a SG shaft.....this will mount on any outboard lower unit that starts the motor with an encapsulated belt in the adapter.....This will make any .21 motor , by definition , an outboard motor........The reference photo is of the 12 motor adapter made by David.......
You will no longer be required to have a dedicated outboard motor with a PTO and a reverse direction crankshaft.....
The .21 adapter is similar to this one shown in the photo.....You can see in the thread I referenced we have tested this adapter design approach with great success.....
Fred Howe at Lawless already has .21 adapters ready for sale to be used with car motors.....

Does anyone know if David ever finished this project? Would be cool to have to open up the .21 outboard options. Between that and the .45 CMB adapters from Joern and a few others, will be a lot easier to get some tunnels on the water.

Mark Anderson · Oct 18, 2022

Kelly Groul drove a stock early production kit G30 to second place in P-Limited at the NAMBA Nats yesterday. The boat was powered by an Aqua Craft 2030 and had a Buass prepped ABC prop on it. The same boat was 3rd in 21 tunnel at last years Nats. It only had one test day on it after being converted to electric, and the first heat was the first time Kelly had driven the boat.

Grimracer · Oct 18, 2022

what foot?

Mark Anderson · Oct 18, 2022

Sorry forgot to put that in OS lower.
The winning boat was a boat that Rod put some magic in. It was involved in some of the early bottom testing. It had Ampdaddy power.

Chris Totty · Nov 12, 2022

Kenny Fairbarn said:
I have only had the G30 out a couple times but the cowl failed at the nose both times out. The bottom cracked and ripped out the first time (not a the seams but at the tab) then I reinforced the bottom of the nose with glass. Stuffed it in some chop yesterday and got a bigger crack through the side this time. Going to reinforce the whole nose with glass and fix but looking for other options.

I heard there was a carbon fiber cowl.... anyone have one for sale?

View attachment 304323

Do you have the cowl secured at the rear with screws? If not I'd highly recommend it. I've destroyed (and then rebuilt the cowl with FG cloth and epoxy) mine with it just being velcro'd on. I've since cut some aluminum post and mounted on the rear (like you would mount a body on an RC car) and that solve that issue. If the boat submerges (which mine loves to do) it will rip the cowl off when the boat resurfaces, breaking the front.
-Chris

Kris Flynn · Nov 13, 2022

Great to see so many new outboard tunnel builds!

I had made up a setup sheet which some might find useful to track their changes, some might not. I Can change the top to suit ZippKits G30 if it makes you feel better also

https://drive.google.com/drive/fold...cekey=0-NBK2NnwWjBkU1BaHgXjnAg&usp=share_link

Eric Mattson · Nov 13, 2022

I been working on mine G30 slowly. Getting the sponsons built now.

Alan Elzer · Nov 14, 2022

Kris Flynn said:
Great to see so many new outboard tunnel builds!

I had made up a setup sheet which some might find useful to track their changes, some might not. I Can change the top to suit ZippKits G30 if it makes you feel better also

https://drive.google.com/drive/fold...cekey=0-NBK2NnwWjBkU1BaHgXjnAg&usp=share_link

Kris thnx for sharing, I've found this very helpful on my tunnels..

Zipp 30" tunnel update

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