Motor for Rigger

[TargetG]

Hi guys,

I'm going to receive a BBY 34" rigger and want advice or Neu motors 1521/1.5D or 1521/1.5Y I would like run at 65+ and I have a lot of lipo packs that I could use paralel or series. Also we have changing conditions that require flexibility in setup, need a little help with props.

Thank you

Leon G

 

[Raydee]

Leon do you have a pic or link to the rigger?

 

[TargetG]

Raydee,

www.bbyracing.com it is a rigger but they are going to make it 34" for me. The site has old info so not much to do there, only the pics and they have the motors there. It is incredible how difficult is to get large riggers. I would love to have a bigger one but for now some people is making tests with large scale riggers making them electric.

Thanks

Leon

 

[jayt]

We can't help until you tell us how many volts you plan to run. <_< Motors are voltage dependent and a 4S motor will not work for 8S, etc. A 34" rigger is not too large for 4S, that is about the size of Brian's 100+ mph 4S SAW rigger.

The 1521/1.5D has a Kv of 1860 so it is best suited for 4S where it will turn ca. 25,000 rpm. It is really too much for 6S - ca. 40,000 rpm. A better choice for a 4S rigger is the 1521/1D. I have one and it is a monster when propped correctly. 65 mph will be easy if you can set up the rigger - this motor ran 95 mph in Brian's SAW rigger.

The 1521/1.5Y has a Kv of 1050 and is best suited for 8S. IMO your rigger is too small for that much power. 8S is 80+ mph in the right rigger.

.

 

[Raydee]

I am holding out for a kit that I saw on another forum. I think its in the testing phase right now but I bet it will be a hit.

 

[TargetG]

We can't help until you tell us how many volts you plan to run. <_< Motors are voltage dependent and a 4S motor will not work for 8S, etc. A 34" rigger is not too large for 4S, that is about the size of Brian's 100+ mph 4S SAW rigger.
The 1521/1.5D has a Kv of 1860 so it is best suited for 4S where it will turn ca. 25,000 rpm. It is really too much for 6S - ca. 40,000 rpm. A better choice for a 4S rigger is the 1521/1D. I have one and it is a monster when propped correctly. 65 mph will be easy if you can set up the rigger - this motor ran 95 mph in Brian's SAW rigger.

The 1521/1.5Y has a Kv of 1050 and is best suited for 8S. IMO your rigger is too small for that much power. 8S is 80+ mph in the right rigger.

.

Jayt,

I have no knowlege of size vs. speed nor cells vs speed. I can run both setups if I want but maybe its better for me 4s for now. and my rigger is 34" long. I would like to know what is the stable speed for this particular hull, this will help me in calculating the max speed that the hull is capable of and not make a false calc that is not possible to keep the hull in the water.

Then I can buy any of the two motors.

Thank you

Leon G

 

[TargetG]

jayt,

After taking a look to my rigger quote it clearly says that it is a 4s rigger, after this my question would be what prop and what max speed.(safe)

for the 34" hull. I'm using a 240 hydra CC ESC.

Thx

Leon

 

[jayt]

The theoretical speed and the actual speed can be very different. A lot depends on the rigger's design and how it is rigged. If it were me I'd use either the 1521/1D or the 1515/1.5D, the Hydra240 and an m440 prop to start. I've gotten into the low 60s with that setup in a cat, so in a rigger 60 should be easy. You can always go up in prop and you probably will, but start with the m440 and check run time and temperatures.

I know nothing about the BBY rigger nor how you want to run it - oval racing or sport boating. Some riggers handle better and run faster than others, but you should be able to get a reliable 70 mph race boat with ca. 2 minutes of run time.

.

 

[TargetG]

The theoretical speed and the actual speed can be very different. A lot depends on the rigger's design and how it is rigged. If it were me I'd use either the 1521/1D or the 1515/1.5D, the Hydra240 and an m440 prop to start. I've gotten into the low 60s with that setup in a cat, so in a rigger 60 should be easy. You can always go up in prop and you probably will, but start with the m440 and check run time and temperatures.
I know nothing about the BBY rigger nor how you want to run it - oval racing or sport boating. Some riggers handle better and run faster than others, but you should be able to get a reliable 70 mph race boat with ca. 2 minutes of run time.

.

Thank you Jayt, I will go for that and see what happens . this is my firs rigger so I'm learning.

Leon G

 

[jayt]

Good luck! Realize that the motor/ESC setup you want to use is a top quality (and price) combo. It has the potential to go faster than you probably should be driving it on public waterways. You can get good performance with less costly components, all up to you. You have not mentioned much about batteries - what exactly are you planning to use?

.

 

[TargetG]

Good luck! Realize that the motor/ESC setup you want to use is a top quality (and price) combo. It has the potential to go faster than you probably should be driving it on public waterways. You can get good performance with less costly components, all up to you. You have not mentioned much about batteries - what exactly are you planning to use?

.

I could use. Fullymax 3700 4s or 2p to make 7400 or I could use A123 4,5,6s 2,3,4P packs but I don't have the hull here so I'm going to call BBYracing to ask for the pack space. I'll post later that info. What do you think?

What I now is that this is a 12 to 24 cell riger so that maybe give a good idea.

Leon G

 

[jayt]

IMO your best bet will be the 4S2P/3700 for 7400 mAh total. Are those 22C cells? If so you can safely draw up to 162 amps continuous, more than you will want to draw. I do not know haw well those cells perform at high amp draws, or how well balanced they are. Set the Castle for a 3.4 volts-per-cell cutoff to be safe.

.

 

[TargetG]

Jayt,

The fullymax have being doing OK on my EDF F15. those are 22C and are perfect for this rigger. But because of the short running time and the long waiting to charge the two packs even w/2 chargers, I will set up A123 packs for the rigger. I can do 5 or 6s / 2 or even 4P. and charge the pack at 10C without thermal runaway and no fire risk w/safe 70c discharge 15min charging time ,or less from testing . And almost 25% more weight than a subc cell but 3.3 Volts. So I wont have to wait too long . Adding almost flat discharge rate. HEAVEN..............

Leon G