Almost two yeas and i cant get the thing to go.

[Geeves]

I’ve had the boat for a year and have never ran it until now. My first run I had some issues.

The boat never went on plane and only went about 200 feet before the speed control started to reset.

I brought it back to shore and I think my coupler was loose on the flex shaft because I could move the prop left to right pretty easy.

Removed motor cleaned up the shaft put in new coupling and the prop motion felt clean again.

Now I cant get the boat on plane, but never could but this time I am ruling out the flex cable. The batteries seem like they last 2 mints trying to get this boat on plane. Lots of cavitations and the motor gets hot. It seems like the water pickup isn’t even working when the boat goes that slow. but when I clean out the boat after the run it has water in the water jacket. The water jacket still feels really warm to touch.

So is my problem I cant get my boat on plane or my battery set up. Or even the prop

Stock motor w/ kintec water jacket
Everything neutral angle and tabs with kintec water pick up
Unsharpened un balanced GrimRacer L40x57
New Duratrax 4800 mah (Don’t know if im charging correctly to only get 2 minute run)
And Onyx 240 charger that I cut the connectors and added deans on but don’t know if I did a great job doing it. I don’t get any errors while charging.
Its set for 5A and charges for about 8 minutes.

[scoota]

At 5A, charing a 4800 pack should take just under an hour , not 8 mins , somethings not right there !

[eboat]

Does your charger say how many ma it put in ?

[Fluid]

You definately have a problem with the charger or the packs. The charger is not filling the packs so you have very little power left in them to run the boat. You are charging just 6 cells on each port, right?

Poor soldering could be a contributor - Duratrax makes adaptors for the Deans connectors, I'd use those. Do you have a friend with a charger you can use to top off your packs?



.

[Geeves]

Does your charger say how many ma it put in ?

Charger has

V
A
mAh
Min

It might give me a mA reading after it says the pack is charged. If i remember right I saw a ~1700 at one time.

You definately have a problem with the charger or the packs. The charger is not filling the packs so you have very little power left in them to run the boat. You are charging just 6 cells on each port, right?

Poor soldering could be a contributor - Duratrax makes adaptors for the Deans connectors, I'd use those. Do you have a friend with a charger you can use to top off your packs?



.

No I dont. I dont know any one in the RC hobby. Just trying to learn on my own. I do have a friend that works on electronics so i might have him put on new connectors.

Right now im charging at 1.5A Just to see if there is any change.

the display is reading

V= 8.68
A= 1.5
mAh = 939
MIN 37.45

[Fluid]

These are 6-cell packs you are using? Are they slightly warm immediately after the charge is finished? Something is missing here.


.

[Geeves]

These are 6-cell packs you are using? Are they slightly warm immediately after the charge is finished? Something is missing here.


.

They are not warm at all.

V =8.65
A = 1.50
mAh = 1621
Min = 64.59

[Doby]

"Unsharpened un balanced GrimRacer L40x57 "


Lifter props and Deep V's don't work well together.

[Geeves]

I guess my charger stops after 90 minutes.

Last reading

V= 8.68
A= 1.5
mAh = 2475
MIN = 90

Im going to send it for another charge @1.5 they are not hot

I also chaged it back to the stock prop.

[Geeves]

sorry i listed the wrong prop
GrimRacer SuperVee 27 40x52 Three Blade Metal Boat Prop
is what i have

Finally got the boat to work. I used the stock prop and charged 3 hours at 1.5A. I flipped it about 25 yards out and had to get out the paddle boat. The boat started to slow down so i brought it back to shore. I checked the water jacket and it was a bit warm to the touch and the batterys were a bit warmer than that. I would say it was about a 5 minute run with a 2 minute flip in the middle.
Ill charge it at 3A this time and see how long it taeks but first i want to let the batteries cool down from the run.

[m4a1usr]

When you get done with your runs do a balance charge on those packs. You have been partially charging them at higher rates, nothing wrong there, but it helps to get them all close to the same levels. Set your charger to .5 amps and let them go for as long as it takes. I'm assuming they are Nimh packs. I didnt read it anywhere but 6 cell lipos would be more then a stock motor could handle.

John

[Geeves]

When you get done with your runs do a balance charge on those packs. You have been partially charging them at higher rates, nothing wrong there, but it helps to get them all close to the same levels. Set your charger to .5 amps and let them go for as long as it takes. I'm assuming they are Nimh packs. I didnt read it anywhere but 6 cell lipos would be more then a stock motor could handle.

John

Yes they are Nimh.

I agree charging them at a low A helps the run. I plan on doing a .5 A charge after im done playing with it today.

[TheShaughnessy]

"Unsharpened un balanced GrimRacer L40x57 "


Lifter props and Deep V's don't work well together.

why would you run an unbalanced prop?

even if it was the 40x 55 /3. You will continue to have long planing times using props in this diameter range.

Try moving your batts forward a little bit, should help you get out of the hole.

[scoota]

If you really want to get your boat going this would be a cheap option , the prop is sharpened & blanced , the set of lipos will really wake the thing up

http://www.offshoreelectrics.com/pro...od=grp-2317.42

http://www.hobbyking.com/hobbyking/s...idProduct=9514 x2


http://www.offshoreelectrics.com/pro...hld-32&cat=136

[makin' waves]

its important to make sure the prop is balanced an sharpened, can do damage with all the vibrations that will be generated with high rpms.

Also you may only get about 5-10 mins max with batterys fully charged it depends how your driving the boat, and the standard rudder water intake only really works when the boat is going straight (try running it past you so you can see the outlet- you should atleast see some water exiting but don't expect a a big jet of water squirting out!

hope this helps,

Tone