Whiplash Sport 20 Build

[detox]

The water is cold and I have no way to retrieve. So I wait............................

[lenny]

Hi,
Do you have a fishing pole and a tennis ball ?
That is one of things I use and I try to keep the boat close to shore at high speeds,
When testing new stuff.

[detox]

I'll try that Lenny.

[lenny]

It works pretty good, If you can cast far enough to the boat.
The bobber and tennis ball get a little heavy for the line I am using,
So when I need to cast far I have to do it nicely or watch my ball and boat float around,
I have a some spare stuff now if that happen.lol

[detox]

I lubed my .187 cable and teflon tube using transmission fluid mixed with Grimracer grease. Drive train sounds pretty quiet after mixing in the transmission fluid.

[jcald2000]

Were you able to move the CG up to 1" behind the sponsons from the 3" you were at? If not be careful it will want to fly!

[detox]

My biggest concern is will this heavy hull get on plane? I should have built up the recovery pads more to ressemble the UL-1. I raised and widened the sponson ride pads to help. Afterplane is longer than standard Whiplash 20 so maybe no blow overs.

[detox]

Today I ran the boat using the M447. Boat jumped up on plane instantly, but water was too wind choppy rough to let her rip. Boat looked pretty good from what I could see. Here is my first Hydra Ice data log. The second Green group 350 amp spike is where I nailed the throttle from stand still. Next time I will be a little easier on throttle by tossing the hull as in first Green amp group. (amps peaked about 225 during hard throttle while running).

The Yellow 3M electrical tape does not hold as well as the White. My UL-1 nose cone fell off during run because of it. Had to retrieve it using tennis ball and fishing pole. The tennis ball and fishing pole method works Very well. Better than getting wet.

[Tim K]

Great looking build , very clean

Tim K

[detox]

Thanks everyone! Now it is time to whip some a$$

[oscarel]

Nice looking whip. What motor and cell count are you running, 4s? I just finished building the sport 40 version and with a Castle 1717, t180 and 6s1p turnigy nano's minus cowl (still waiting on one) I'm at 10.5lbs. I added CF everywhere possible and I really thought it was going to be overweight. I took it out today and was able to get 58 with a x645 with amp spikes up to 198. I also have the same Virginia Craftsman fin, love it. Are you planning making the bracket adjustable? I know this was your first run, but did you notice any difference with the changes you've made? Keep the updates coming!

[detox]

I set hull up for P Sport Hydro. Motor is Neu 1527 .5y 2500kv cell count is 4s2p. This longer/heavier hull is more stable in rough water than my smaller Whiplash 20.
I did not use the supplied Virginia Craftsman turnfin bracket. I used the two bolt Speedmaster strut bracket mentioned earlier in this tread. I may elongate top bolt hole for more adjustability if turnfin needs it. Waiting for more calm water conditions so I can really see what this hull can do.

58 is fast. What ESC are you using? 6s1p sounds risky...better use high output cells. Please post pics of your build (Q Sport Hydro)!

Look at this chart:

http://castlecreations.com/support/documents/neumotors-castle_boat_apps.pdf

...

[oscarel]

I'm using Turnigy T180 esc and 2-3s nano-tech 5000mah 45c's in series. I've seen that Castle chart before. The motor and esc came out of one of my other boats that was pulling up to 300 amps with the same controller with no issues. I'll post a pic later this afternoon.

[oscarel]

Here's a couple pics. Lipos slide into side just behind motor, balance is about 1" behind sponsons.

2012-02-04 17.22.14.jpg2012-02-04 17.16.09.jpg

[detox]

Very interesting and good job. Have you seen this new Whip 20 and 40 cowl in the works?
http://forums.offshoreelectrics.com/...ht=#post386193