X/F-Hydro All Carbon Time Trial Rigger

[Wasted wages]

Awesome work! That thing is flying!

Love that little tug! Works nice!

 

[RaceMechaniX]

Great footage, amazing to see what's really going on.

When it rolled do you think it caught the outside edge, the fin let go or a bit of both?

Turnfin sponson went over a roller I created turning in the same spot.

 

[XtremeRcBoats]

Great video. Are you not afraid of water getting into the carb? Maybe add a small shield/cowl.

 

[RaceMechaniX]

Yeah Paul, some type of small cover should be added. When I get to more aggressive props which are harder to lunch having the carb dry will only help get it up on pipe.

 

[Mark Anderson]

I would also think that currently the carb would be in very turbulent air

 

[RaceMechaniX]

Got some test time in Saturday with the TT boat. Switched over to the blue head 91 VAC and ran a couple tanks through to break the motor in. She is still rich in these videos. New turnfin helped.

 

[Buckshot]

Got some test time in Saturday with the TT boat. Switched over to the blue head 91 VAC and ran a couple tanks through to break the motor in. She is still rich in these videos. New turnfin helped.

Thanks for sharing! That looks like fun!!!!!! Cool watering hole.

 

[Terry Keeley]

Looking good, that new fin's working much better.

Any idea what SAW speed is?

 

[RaceMechaniX]

Hey Terry, the new fin is working much better but I think I still need a little steeper leading edge to reduce more lift. Or I need to modify the lift characteristics of the sponsons. It turns exceptionally well almost too good. I am thinking the next design will have a shorter chord length in addition to the steeper leading edge.

I think the speeds here are in the low 70's with the 2719. I did not lean the needle, but no where near the speeds I need to chase Martin down. I need to be in the mid 90's.

 

[RaceMechaniX]

Very cool build Ty, I like your idea of having the templates drawn up and laser cut, man I wish I had your command of Solidworks!

Just curious what that plate you're using for the sides is made up of, two layers of 6oz cloth/side? Also, what's that bonding resin your using, it looks white?

Again, amazing work!

Sorry TK, I realized I never responded to your question. The lay-up design is quasi-isotropic, consisting of three layers of carbon fiber on each side of a Divinycell H100 foam core center. So it's 1/4" foam with 0.035" 3-layer carbon on the sides.

I am using Loctite Hysol HP-120 toughened epoxy to bond all the panels together.