Couple of questions

[Eggy]

Ok, think i will drop the 5S for a while. How do i adjust the angle of the drive system.

Thnx a lot guys, know its a lot of questions coming but we have all been new to some things so the only way to learn is by listening to the "pro's" ^^

[kookie_guy]

Ok, think i will drop the 5S for a while. How do i adjust the angle of the drive system.

Thnx a lot guys, know its a lot of questions coming but we have all been new to some things so the only way to learn is by listening to the "pro's" ^^

there are 2 screws that hold the outdrive to the bracket that's connected to the transom. You loosen those 2 screws, and you'll be able to tilt it up and down. When you tilt so the prop is closer to the surface of the boat, the boat will run more dry, giving more speed. When you tilt so the prop is deeper, it will try to drive the rear of the boat out of the water, effectively bringing down the nose, and making it run more wet (slower speeds).

[Eggy]

Thanx a lot, going on a holiday in some hours (Not sure if you can call it a holiday, me and a friend is cycling 350Km in 2days, Dont ask why)

Anyway will try to play some more with the boat next week.

[Eggy]

Just been out with the boat again, and tried playing with the angle of the drive system without any improvement at all.

Stock: 35Mph

I tilted the system so that the gap from the bracket on the boat to the bracket on the drivesystem was first 2mm, then max tilt. Stock was about 5mm or so.

Have anybody tried grinding down the brackets to allow for even more tilting, as mentioned above i have like 5mm/0.2Inch of room to work with so its not much.

Thnx

[kookie_guy]

that should be plenty of tilt to get the boat running dry. have you removed the stock battery trays yet? try that, as it will allow you to put the batteries a) lower in the hull for a lower CG, and b) closer to the transom which will also help it run dry.

[Eggy]

Nope i have not removed the battery mount. Maybe i will try it aswell.
Regarding the battery mount, how do you guys remove it, do you just grab it with some pliers or do you use something else, i'm worried about damaging the hull in some way so some tips would be great.

Im also thinking about a Nimh setup, i know that the max Voltage that the ESC can take is 21V so i could get close to this by using 2x 8cell Nimh (19.2V) or maybe 2x9cell Nimh (21.6V). I dont want to use a 5S lipo setup yet in danger of damaging the cells. What will be the faster setup, 4S 5000Mah Lipo (14.8V) or a 16/18 Cell Nimh (19V / 21.6v) ? Know that this will be alot of weight but the extra Voltage may make up for that.

Thnx

[kookie_guy]

Nope i have not removed the battery mount. Maybe i will try it aswell.
Regarding the battery mount, how do you guys remove it, do you just grab it with some pliers or do you use something else, i'm worried about damaging the hull in some way so some tips would be great.

Im also thinking about a Nimh setup, i know that the max Voltage that the ESC can take is 21V so i could get close to this by using 2x 8cell Nimh (19.2V) or maybe 2x9cell Nimh (21.6V). I dont want to use a 5S lipo setup yet in danger of damaging the cells. What will be the faster setup, 4S 5000Mah Lipo (14.8V) or a 16/18 Cell Nimh (19V / 21.6v) ? Know that this will be alot of weight but the extra Voltage may make up for that.

Thnx

to remove my trays, I used snips and needle nose pliers. Use the snips to at least score (if not cut) the wood, and the pliers to pull out the snipped pieces. Take your time, don't rush it, and you'll do fine. You can also use a sharp blade to slowly shave the wood.

As far as the batteries go, one thing you really have to consider is whether or not the NIMH packs will be able to handle the current draw. Yes, you are right about the higher voltage, however, under heavier loads, the voltage of the NIMH packs will drop. You'd have to use some very good cells to be able to maintain the current draw.

[Eggy]

Ok, how many amps are we talking at the max, any idea?

[kookie_guy]

Ok, how many amps are we talking at the max, any idea?

if I remember correctly, the ESC is rated at 60 amps. Now, in stock trim, it's not gonna suck 60amps. But as soon as you start doing stuff to it to increase the load on the motor (ie bigger prop) then the draw will increase.

For instance, I ran my 3800mah packs on a stock boat (7cell packs) which were rated for continuous 30amp discharge, and they got pretty warm. As far as actual draw, I don't have an eagletree system to answer that.

[Eggy]

Thnx again, you guys are the best :D

I found a couple of packs around:
Ebay: 9.6V Tenergy - Max 40 Amps @ 30$
TowerHobbies: 9.6V Great Planes - Max 80 Amps @ 50$
TowerHobbies: 9.6V Venom 8C packs.

Any of these any good?

Is it correct that the max amps on the Venom pack is 8C * Number of Cells (8*8 = 64Amps) or?

[domwilson]

You can get Rhino or Zippy lipos at those prices.

[Fluid]

...Is it correct that the max amps on the Venom pack is 8C * Number of Cells (8*8 = 64Amps) or?

Typically, multiply the "C" rating by the cell capacity - 8C x 4.2A = 33.6 maps maximum. But you don't want to pull the maximum or the cells will get hot and you won't get full voltage, this is a real problem with NiMH cells. Like was mentioned above, you'd be faster than yo uare now by only getting a decent set of LiPos. Two 2S LiPo packs will give much higher performance than even two 7 cell packs of NiMH cells, but you'll probably have to buy a new LiPo charger.

Two 2S/4900mAh/20C Rhino packs from Hobbycity are $27 each and handle 98 amps - plenty safe for your application. Club members who are using them in their UL1-powered hydros are getting very good performance from them.




.

[Eggy]

Ok, i have a decent lipo charger a Platinum EX.

And im running some lipos that i had around, not sure if they are any good.
Yuntong 2S 5000mah 20C

Looks like i must do some repair on the hull aswell, todays run ended up in the shore and made some small damage to the front of the hull.

How do i repair this as easy as possible without making it a weak point.











Thnx again guys

[mtk]

first I would put epoxy in layers on it to reshape the front and mabey put some on the on the inside to harden it

[Boogie]

Looks like you could lay some thick 5 minute or less epoxy in there, then shape it with a dremel or by hand, then sand it a bit and add some enamel and clear coat to finish it off.