Whiplash Sport 20 Build

[detox]

Hull would have been easier (stronger also) to lengthen if I had decided to do so before building, but this will work. Transom is extended back 3" and will be sealed off from rest of hull (better floatation in case of crash). Waiting for epoxy to set. I will add more pictures to this post later.

[Shooter]

Looking good. As usual!

[detox]

Thanks Shooter. I have been taking my time with this one. Seems the longer I think about it, the better my ideas are. I just hope it runs fast and stable.

[detox]

Widening and lengthening hull to 33 1/3" inches (stern to sponson tips) gave me more room for ESC and Lipos. I can move Lipos forward or backward depending on center of gravity.

Here is one possible esc/lipo location. Fit is a tad tight @1 1/8" wider, so I know 1 1/4" wider would be perfect.

After plane is at maximum of 60% rule.

[detox]

Happy Thanksgiving! I cannot work on my boat because of it.

Here's my second hobby. My modern HO scale train on wall layout. The HO steam locomotive in picture will soon be released by Athearn. Both of these locomotives have lifelike sound and movement. The steam version also has real smoke effects.

[detox]

Today I rigged the servo and drilled/tapped for hardware.

1mm carbon fiber plate was used to stiffen rear corners. Hobbyking has good prices on carbon fiber, but size is limited.
http://www.hobbyking.com/hobbyking/s...MM_Thick_.html

[detox]

Today I worked on the cross piece that UL-1 Nose cone holds to. This piece really helps strengthen cross section of hull. I will attach it to inside sponsons using epoxy then long stainless steel wood screws

I checked the angles of cross piece using Wixey digital angle gauge. It is best to set up your table saw or band saw using one of these gauges. I had to laminate a strip of 1/8" basswood across front length of piece to make it 2 1/16". I tacked a whole piece of 60 grit paper to mdf setup board to sand front edge round. It follows contour of nose piece pretty good.

[detox]

Blazermarine CNC'd Whiplash 20 turnfin installed. This turnfin is on the smaller side, so I installed it deep. Bracket will be drilled again to move fin more forward if need be. Ridepads will be built up and widened later. I am installing all hardware before checking balance.

[HydroMike]

What bracket r u using I have his turn in didn't see a bracket for it might have over looked it guess

[detox]

What bracket r u using I have his turn in didn't see a bracket for it might have over looked it guess

Seems bracket is the most difficult part to find when mounting a turnfin. Blazermarine does not carry a bracket for the Sport20 fin. So I used 1/2 of strut bracket from this kit. You can call Rossi sales and he will fix you up without buying whole kit. Just tell him it is for a turnfin bracket.http://rossisales.com/

[detox]

After checking for balance I used 8oz of lead in left sponson and 4 oz in right.

[HydroMike]

Seems bracket is the most difficult part to find when mounting a turnfin. Blazermarine does not carry a bracket for the Sport20 fin. So I used 1/2 of strut bracket from this kit. You can call Rossi sales and he will fix you up without buying whole kit. Just tell him it is for a turnfin bracket.http://rossisales.com/

just what I was thinking to thanks

[detox]

Before cross piece is screwed down. I used a piece of 1/10" carbon fiber plate to brace inside both sponsons. I will predrill using long 1/8" bit so cross piece will not split

[detox]

I think I will paint hull Yellow and Black, but first I have to build new ridepads.

[detox]

8s2p anyone? How bout 6s2p? 4s2p?