21 GT by Zippkits

[Tim Kish]

Congratulations to everyone involved in putting this kit together, very simple to build with well laid out instructions.
Looking forward to testing in the spring.

 

[Tim Kish]

 

[XtremeRcBoats]

Looks great. What's under the hood?

 

[Tim Kish]

Thanks
Nova!

 

[Wasted wages]

Nice build !!

Are those outer buttons on the boom tubes part of the kit ?

And do I see heat shrink on the inside of the sponsons on the boom tube slip joint?
Are you using that in place of bolts to hold the sponsons on ?

 

[Tim Kish]

Nice build !!

Are those outer buttons on the boom tubes part of the kit ?

And do I see heat shrink on the inside of the sponsons on the boom tube slip joint?
Are you using that in place of bolts to hold the sponsons on ?

The buttons are tubes that go through the sponsons and are part of the kit and yes shrink tubing is holding the sponsons in place. I can't take credit for that idea but it works very well and adds zero weight which is so important to a B hydro.

 

[Wasted wages]

Cool idea,,, I once read somewhere about using radio box tape, but I thought nah... don't want my sponson flying off in the middle of a turn...

I would use nylon bolts before radio box tape....but heat shrink sounds like it could work... weight trade off is probably the same as 6-32 nylon bolts and nuts setup..

Do you thin CA the tubes where they slide together first ??

 

[Tim Kish]

Cool idea,,, I once read somewhere about using radio box tape, but I thought nah... don't want my sponson flying off in the middle of a turn...

I would use nylon bolts before radio box tape....but heat shrink sounds like it could work... weight trade off is probably the same as 6-32 nylon bolts and nuts setup..

Do you thin CA the tubes where they slide together first ??

Just heat shrink, nothing else.
The stuff I use has a tacky glue on the inside that activates with heat, not sure if all tubing comes that way.
The other benefit is you can change out a broken boom tube very quickly!

 

[Ron Zaker Jr]

Just heat shrink, nothing else.
The stuff I use has a tacky glue on the inside that activates with heat, not sure if all tubing comes that way.
The other benefit is you can change out a broken boom tube very quickly!

Hi Tim, boat looks real nice! Have you run it with the heat shrink tubing? Just curious if the turn fin side stayed together?

 

[DON MAHER]

Hey Ron,
I have been running my gas hydros with nothing but heat shrink for the last 6-8 years and never had any problems at all! Must give all the credit to Tyler Gerrard,he is the first one I ever saw use this system to hold sponsons in place!

 

[the german]

...... and I stole the idea from Don . Works perfectly!
Here is the MC Master Carr link.

https://www.mcmaster.com/heat-shrink-tubing/heat-shrink-tubing-type~tubing/lining-material~adhesive/
Alex

 

[JRXHydros]

...... and I stole the idea from Don . Works perfectly!
Here is the MC Master Carr link.

https://www.mcmaster.com/heat-shrink-tubing/heat-shrink-tubing-type~tubing/lining-material~adhesive/
Alex

Thanks for posting the link.

 

[Tim Kish]

Hi Tim, boat looks real nice! Have you run it with the heat shrink tubing? Just curious if the turn fin side stayed together?

Thanks Ron
Works great, only failure I had was with old dried ot tubing which was my fault.

 

[Ron Zaker Jr]

Thanks Ron
Works great, only failure I had was with old dried ot tubing which was my fault.

ok thanks Tim.