rj walker

How are you guys mounting your esc ? I have a hobbywing 60a seaking esc I was just going to mount it to the floor of boat with some velcro that should work I think esc is supposed to bewaterproof so it should be safe. what do you guys think any reply would very appreciated

CBRobbins

I took the receiver box that came in the boat, after it was removed completely from the hull, and cut it to the same shape as the servo mount. Then glued it in with hot glue. When I was done both sides looked exactly the same.

You can kinda see it here....

CBRobbins

Went to the creek today with mine, it was really flowing with the rain we have had earlier this week. 2 cells was fun, 3 cells was a blast, 4 cells was ballistic for about3 minutes! Then the motor had a meltdown! LOL!! When I opened the boat up the motor was still sizzling and boiling the water in the cooling lines!!That was with a 25amp seaking, with a 60 you should never have a problem RJ.

rj walker

Yes I figured it would handle most any thing plus it was like 48.00 bucks thought was cheap I am used to paying150.00 up esc for my sc trucks hahaha. Thanks for info to

CBRobbins

Yea, my little 25amp was $20! I figured it would be junk for that price. Boy was I wrong!

comanchekid

I'm new to all this RC stuff... I was wondering why you have the blue and orange wires plugged in opposite...

comanchekid

Another question for you guysare yourunning the batteries in series or parallel...

CBRobbins

Switching 2 wires on a brushless ESC changes the rotation of the motor, I was sucking water in instead of blowing it out. And even though I have 2 batteries in the picture, it is still 7.4v. I have been using a single 4000mah 2s pack lately, it has much longer runtime.

comanchekid

what are you guys using for the water pickup in the jet drive and how are you making it.

Thanks
Jason

comanchekid

Disregard I figured it out.... and everything works just in time for the Fourth of July on Lake union.,.,

ROOST

is there anywhere where i can get spare impellers for the nqd?

aum-offshore

wow....
i have

llDemonll

how much for those kits shipped to the US and what all do they include?

I may be interested in buying a few from you

rj walker

I want a couple of his kits to but can not figure out how to get ahold of them . He email me a site to go to but can't under stand it

ROOST

i would like to get some of these do you sell them?

Diversion900

G'day folks,

been lurking here for a while now.... hell 86 pages take a bit to get through.

anyway, got the boat, ripped out the gear, replaced servo, motor, and ESC

Motor is water jacketted 2040 4800KV with Watercooled 40A ESC and I tried a 2200mAH 20C 3S Lipo

All was great for first 10 mins, then POP

I limped back to shore and lifted the lid thinking the worst, maybe ESC or Motor, but instead I found a

verry puffed up battery........ BUGGER

I am open to suggestion here guys... new to Lipo's here was it just not enough C's ?


Cheers, Neil

hqdby1

Well. I'd say your Kv is way too high on a 3 cell! Because any higher then 3000 with a 3 cell it just churns water not really doing anything wasting energy!

I'd say 20c isn't enough, best get a nano tech with a high discharge for that kind of setup.

http://www.hobbyking.com/hobbyking/s...Lipo_Pack.html
That should work great!

http://www.hobbyking.com/hobbyking/s...Lipo_Pack.html
That's slightly bigger and has a higher discharge, you could get it to stay on the safe side but I think the other is fine.

SpeedDaemon

On the other hand.... 2.2Ah x 20C - 10% = 40Amp, that's what the lipo should be able to give continuously. Having a look at a similar motor shows it's able to pull about 25A.

It shouldn't be able to puff the lipo unless there's something wrong.Or?

sundogz

Hqdby1 is right on the money. 3S is too much for the 4800kv motor, and 20C is a marginal battery. It would have done fine if it were 2S. The 25A rating is very conservative as it will draw higher than that with higher voltages. Get a 2S lipo (nanotech is excellent) at the highest 'C' rating you can afford, and things will be fine. You should have also noticed that the speed stopped increasing well before the motor reached top end.

aum-offshore

all these parts about jet boat Upgrade.
(Not include Brushless Motor and ESC)

1.Motor Coupler 3-3 mm (6061 aluminium)
2.Bushing brass (inside) 10x8mm
3.Bushing brass (outside)
4.Drive with Prop Shaft and Drive Dog
5.Motor Mount with Screws (Water Cooling system)
6.Gasket (inside and outside)
7.Motor Mount Bracket
8.Mini Servo Mount
9.Trim-Tab
10.Rubber Seal
11.aluminium Tube 4 mm (Lenght 50mm)
12.Silicone Tube 400 mm

llDemonll

how much for that kit? I would be very interested in buying one

CBRobbins

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rj walker

He sent me a email saying he had 2 sets in stock and there 57 USDnot includingEMS post but he don't say how or whereto order.I would bet postage would be very spendy

Diversion900

Thanks for the info guys.

Just took possession of 2 new batteries so I may get a chance to test again this weekend.

3000mAh 2s 35c

will see how these go, theyre ballance charging now

Diversion900

Well there ya go..... works like a charm now

Thanks guys