Pursuit ala HK

[puttekula]

Hey guys.

Im pretty new to this boating thing, But not to RC as Im into cars since 1986.

I have ordered a http://www.hobbyking.com/hobbycity/s...dProduct=11853 .
http://www.hobbyking.com/hobbycity/s...dProduct=10626
I live in Sweden and this is a pretty price wise good deal to me to get in the water.
The question is.
Yes I know there is faster components out there. But I will test this combo out with original parts and 4s. How long run time will there be with one 5800mah pack?

And if I swap the motor out for a Leopard 2200kv? Will the esc burn? And the running time? Are u Pursuit guys running 5000mah packs or?

Can I feed this combo with 6s? What will burn first? ;o)

Please help me out with this...

//P

[Diesel6401]

Hey guys.

Im pretty new to this boating thing, But not to RC as Im into cars since 1986.

I have ordered a http://www.hobbyking.com/hobbycity/s...dProduct=11853 .
http://www.hobbyking.com/hobbycity/s...dProduct=10626
I live in Sweden and this is a pretty price wise good deal to me to get in the water.
The question is.
Yes I know there is faster components out there. But I will test this combo out with original parts and 4s. How long run time will there be with one 5800mah pack?

And if I swap the motor out for a Leopard 2200kv? Will the esc burn? And the running time? Are u Pursuit guys running 5000mah packs or?

Can I feed this combo with 6s? What will burn first? ;o)

Please help me out with this...

//P

Typical runtime in FE boating is 3-5 minutes. Even with the larger mah packs your still restricted due to the heat draw.

Here's the problem I think your going to run into running 1 single pack. Your going to have to stick pack in the middle forward of the motor which is going to throw the CG all off and force the boat to run wet. I run my batts along the sides of the motor (2 batts) with the cg at 10" from the transom going forward. I use the battery tray for my esc to sit in the middle. I woundn't trust 6s (that's just me) on that setup. I run the leopard 4074 2200kv and a seaking 180. I love my setup and the pursuit! http://www.youtube.com/watch?v=Az0zIeJiZJA


Welcome to OSE!

[ron1950]

i am with diesel ...i think u should go to at least a 180 amp esc and 2 4cells in parrell beside the motor.....u will be much happyer......

[puttekula]

Thx for the answers and the welcome guys...

I have two 2s stickpacks (Intellect 5800/60c) from my cars. That is what Im going to start with. So there will be one pack on each side.

But as I understand it there will be a pretty short ride with just 5800mah?

And yes, I have my eyes on the 180 esc as well. I have watched your movie before Diesel and that is the reason for me to soon start upgrading this boat. There was no intention at all for that in the beginning... So thx for that....

What is the minimum C for a 4s5000mah pack?

//P

[puttekula]

Another question that comes to mind.

Why not use 2x6s 3600mah packs and a 14-1500kv motor? That gives the same prop rpm and produces appr the same effect? But with much less Amp? Less heat and smaller esc, cables etc? The use of a 120A instead of 180A esc.?

[Diesel6401]

Another question that comes to mind.

Why not use 2x6s 3600mah packs and a 14-1500kv motor? That gives the same prop rpm and produces appr the same effect? But with much less Amp? Less heat and smaller esc, cables etc? The use of a 120A instead of 180A esc.?

I like your thinking my friend.... Most newer boaters grab a higher kv motor like a CC1515 2200kv and try and run 6s on it, not good. Glad to see you have the basics down pack.

Your setup would work, but not sure if the pursuit would like 2 6s packs. I have 2 4s packs in it and not sure how the 2 6s would fit good in the hull. Your thought process is correct though only thing is I personally never run esc's to max voltage. That's just a me thing, but guys have done it with mixed results. Your on the right track though. I have some 6s batts. I can try and see if they fit in the hull ok for you.

[ray schrauwen]

5S is a great voltage to run 1400-1500Kv motors. I like it allot.

[puttekula]

It sure is interesting. See below for two examples of Turnigy packs. There isnt that much in difference. And remember, the 6s 3600mah pack has more energy in it. 3350mah 6s is theoreticaly the same as a 5000mah 4s. The voltage itself isnt the vorst enemy. The Amp and Watts are. More Amps demand larger cables and better cooling compared to a setup with higher voltage. The power (watts) is the same.
But I think its very important to choose the right motor. The rpm must be the same.

Capacity(mAh) 5000
Config(s) 4
Discharge(c) 30
Weight(g) 537
Max Charge Rate (C) 5
Length-A(mm) 143
Height-B(mm) 32
Width-C(mm) 49


Capacity(mAh) 3600
Config(s) 6
Discharge(c) 30
Weight(g) 577
Max Charge Rate (C) 2
Length-A(mm) 137
Height-B(mm) 43
Width-C(mm) 43

[Diesel6401]

Yup right motor choice is key and like I said your on the right path. Sorry forgot to check the 6s lipos in the pursuit today. You have to be careful with the dimensions sheet from HK, sometimes there not 100% accurate on the specs. You prob could get away with a 6s2p setup, like I said I am running 4s 3600mah in parallel and they fit nicely, i just wanted to make sure they fit good for you and I forgot. Hopefully tomorrow I remember to check. Hate for you to get a good setup and the batts don't fit right. Like ray said a 5s setup could rock also...

Instead of ordering Turnigy packs from HK, may I suggest Gens Ace packs from Hobbypartz.com

[puttekula]

Thx for answering.

Oki, would be nice if you can check what will fit "under the hood"... So you
are using 3600 4s packs? what runtime is there with this combo? ANd is
the "piggytape" enought to hold the batteries in place?

ANd thx for the Ace tip. Those are great packs from what Ive heard...

[puttekula]

Hehe.. Sorry for the confusion.....

If you followed this conversation u would understand what I mean. Im talking about the total energy you can get from each pack.... Volt and Ampere gives Watt. And thats what counts.

[puttekula]

Im not talking about gaining speed when using higher voltage. Please read my posts...

[sailr]

never mind

[Diesel6401]

Thx for answering.

Oki, would be nice if you can check what will fit "under the hood"... So you
are using 3600 4s packs? what runtime is there with this combo? ANd is
the "piggytape" enought to hold the batteries in place?

ANd thx for the Ace tip. Those are great packs from what Ive heard...

Im using the 3600mah packs for 4s2p 7200mah, runtime only about 2 1/2 to 3 ms. It's a high amp draw setup. The 6s batts where a really tight fit, but the made it under the cowl. Its a tight squeeze my friend. I think a 4s2p or a 5s2p maybe better JMHO.


Here's my 4s2p setup. CG @ 30% which is the way I always run my boat now.

[Diesel6401]

Here's how the 6s2p setup fits inside the boat. Very tight squeeze but it made it. Sorry for the delay in getting those pics to you.