Now lets upgrade some more stuff on the Spartan

[JPriami]

it was another windy day. here is a quick clip.

[Brushless55]

sounds really good man!

[Make-a-Wake]

Give an x642 a try.......................it may suprise you.

[JPriami]

I dont have one yet. So I wouldn't mind having one for the collection & to try.

[dag-nabit]

lookin' good, she was really flying today.

Kevin

[JPriami]

Hit 57.5 this morn b4 work. Moved weight back about 1.5 inches. But it's becoming unstable again. Going after work to try something else. Maybe try dropping the strut down to level. It's just slightly prop up right now. Or place the gps up front on the left. Idk. Open to suggestions.

[Brushless55]

yes!
drop the strut level
having it prop up a degree or to will cause it to get loose

[JPriami]

dropped the strut back to level. didnt help. I moved the batteries back more forward too and then that didnt help. very weird. I left the batteries forward then started pointing the prop back up and it got better. this is nuts.

[LarrysDrifter]

57.5mph!Thats sweet.

[Brushless55]

dropped the strut back to level. didnt help. I moved the batteries back more forward too and then that didnt help. very weird. I left the batteries forward then started pointing the prop back up and it got better. this is nuts.

[JPriami]

that smilely face must be riding in my boat bouncing around.. lol

[JPriami]

I have a question.
So the boat seems to run stable with no bouncing side to side when the batteries are placed up front and about an 1 to 1.5 inches back. And it seems to like the prop pointed up a few degrees. Currently 54.4 MPH stable running

When I start to place the batteries further back it starts to increase the speed but also starts to bounce side to side. I understand why btw im just asking what other experience with this sort of problem and the solutions they found.

what would be best? leave the batteries up front where it runs stable or place the batteries further back and start to use the trim tabs to see if speed can increase and still be stable? I fear the tabs will just add drag and sort of cancel it out, thats my theory anyways

[Make-a-Wake]

Hey J, i found out after LOTS of testing that when the batts are back a bit, the stinger wants more positive......................tried it numerous times. One would think move the stinger down to get the ass up, but it doesnt work that way on my 39 incher..................go figure that out ????

[JPriami]

Pointing it up will force the nose of the boat up and push more of the hull out of the water. less hull in the water will equal less resistance. but it gets to a point its unstable\loose in any craft. Then theres a balancing act to fathom. If you point the prop down it will start to force the nose of the boat down into the water and you will get slower (in most cases). im starting to feel 54.6mph is about max for what i have atm. i heard you mention the x642. im worried the smaller diameter may not do much for me. but it might work too. I was thinking a prop thats still 45mm but more pitch. idk.. might just heat things up more. COG for it being stable seems to be about 9 3/4in up from the transom. anything behind that its becoming unstable. anything more than that slows it down.

[JPriami]

Look what I found.
Alternate mounting holes for trim tabs molded into the transom. They just are not drilled out.
I noticed on the prototype that traxxas has that there were holes in the back of the transom closer to the strut. I figured it was just from testing different setups.