What motors MHZ

[Himalaya]

I ran a pair of Leopard 4092 2000KV motors in my HPR115, gained a speed of 142km/h with a pair of X447/X447R props. Tried the 4074 with similar speed. I am with the MHZ recommendations, 4074 is the way to go.

http://forums.offshoreelectrics.com/...ad.php?t=17270

[ScarabChris]

Chris I see you went for the MHZ Mystic cat. Nice choice if you must have a cat. Don't mess around, slap those two huge motors in that you were going to use in that 35" cat.

[dasboata]

Chris I see you went for the MHZ Mystic cat. Nice choice if you must have a cat. Don't mess around, slap those two huge motors in that you were going to use in that 35" cat.

LOL what do you think it would work ?

[JMSCARD]

I like the higher kv and larger size of the 1518's... You could run 5s2p each side too... Maybe 5s 4000's-4500's each side for around 8-9000 may per side for longer run time and without the weight penalty of huge motors... Jmo though... And x447's should work great.... But toques 1520's work well too... Does tique run 2p? Wonder how the boat likes or dislikes weight?

[Anbjorn]

Hi Chris,
What motors do you have right now?
Please post a link to info about them?

I do have the same Mystic as you just got from Dominick.
I will start building it as soon as I have collected all the parts.
It will take some time as I am trying to limit my spending for a while

As you already know this is not a big hull compared to what us "Gasser Boys" are used to. The hull and sponsons are quite narrow so it means that this boat is not suitable for going realy fast in the turns.
However is should be a excelent SAW, or fast fun-run boat.
And I do asume you wan't to go realy fast?
In my oppinion that translates to a high rpm, short run time setup as the only way to go realy fast.
I belive ManuelW here on the forum already have given some good advice for setting up these cats and the similar HPR115.
He have certainly steered me in the right direction.

Here is my plan for my Mystic M.
I am going to use a pair of Lehner 1950/5 HiAmp LK & WK motors.
According to Lehner rpm table these motors have a KV of 2505 (2505rpm/Volt)
I will start out for function testing with a pair of HYPERION G3 VX 5500 MAH 4S 14.8V 35C/65C, 1P pr. side
The 4S packs should put me in the 37000rpm range.
When I am satisfied with everything I will move up one cell count to a pair of HYPERION G3 VX 6500 MAH 5S 18.5V 35C/65C.
I belive the boat should now be quite fast. However run time should now be kept short as the motors will probably start to heat up. (46300rpm)
I have also on its way a set of HYPERION G3 EX 5000 MAH 6S 22.2V 45C/90C LIPOLY SPLIT PACK.
Going here will realy explore what is absolutly possible or not. Probably not
Prop choice will off course be a issue. But I belive that is something you got fully covered
At the moment I have a set of L&R ABC 1516/3, and L&R 4819/3 SS reduced to 43mm.
I also have a EagleTree datalogger with 2.4GHz wireless dashboard to help me getting the max out of it.

Esc's will probably be a pair of AS26-200BL-EvoII

http://modellbau-regler.de/xtcommerce/product_info.php?info=p65_AS26-200BL-EvoII.html&XTCsid=oqfk429l017t0jt4h0jlfg7i23

Drives will be modified with ball bearings and drive lines will be 2mm piano wire.

So my advice would be to use relatively high KV motors of good quality (2000KV)
Buy the absolutly best Lipos you can get or afford.
Start off with a set of 4 and 5S with about 5000mAh.
Don't forget good quality high current bullet connectors.

What esc's do you plan to use?

Please don't take this post as very qualified advice, just letting you know what I am planning, and maybe there is some good advice to find too
Thanks
Anbjørn

[dasboata]

Hi Chris,
What motors do you have right now?
Please post a link to info about them?

I do have the same Mystic as you just got from Dominick.
I will start building it as soon as I have collected all the parts.
It will take some time as I am trying to limit my spending for a while

As you already know this is not a big hull compared to what us "Gasser Boys" are used to. The hull and sponsons are quite narrow so it means that this boat is not suitable for going realy fast in the turns.
However is should be a excelent SAW, or fast fun-run boat.
And I do asume you wan't to go realy fast?
In my oppinion that translates to a high rpm, short run time setup as the only way to go realy fast.
I belive ManuelW here on the forum already have given some good advice for setting up these cats and the similar HPR115.
He have certainly steered me in the right direction.

Here is my plan for my Mystic M.
I am going to use a pair of Lehner 1950/5 HiAmp LK & WK motors.
According to Lehner rpm table these motors have a KV of 2505 (2505rpm/Volt)
I will start out for function testing with a pair of HYPERION G3 VX 5500 MAH 4S 14.8V 35C/65C, 1P pr. side
The 4S packs should put me in the 37000rpm range.
When I am satisfied with everything I will move up one cell count to a pair of HYPERION G3 VX 6500 MAH 5S 18.5V 35C/65C.
I belive the boat should now be quite fast. However run time should now be kept short as the motors will probably start to heat up. (46300rpm)
I have also on its way a set of HYPERION G3 EX 5000 MAH 6S 22.2V 45C/90C LIPOLY SPLIT PACK.
Going here will realy explore what is absolutly possible or not. Probably not
Prop choice will off course be a issue. But I belive that is something you got fully covered
At the moment I have a set of L&R ABC 1516/3, and L&R 4819/3 SS reduced to 43mm.
I also have a EagleTree datalogger with 2.4GHz wireless dashboard to help me getting the max out of it.

Esc's will probably be a pair of AS26-200BL-EvoII

http://modellbau-regler.de/xtcommerce/product_info.php?info=p65_AS26-200BL-EvoII.html&XTCsid=oqfk429l017t0jt4h0jlfg7i23

Drives will be modified with ball bearings and drive lines will be 2mm piano wire.

So my advice would be to use relatively high KV motors of good quality (2000KV)
Buy the absolutly best Lipos you can get or afford.
Start off with a set of 4 and 5S with about 5000mAh.
Don't forget good quality high current bullet connectors.

What esc's do you plan to use?

Please don't take this post as very qualified advice, just letting you know what I am planning, and maybe there is some good advice to find too
Thanks
Anbjørn

Hey Anbjorn how are you ? I have some monster CC 2028 motor http://www.castlecreations.com/products/2028_motor.html I am probleby going to go with MHZ recomendation leopards 4074 and run them on 5s what do you think thanks Chris

[Anbjorn]

Chris, I am fine thank you.
What exactly is the KV of your Leopard 4074? 2000KV or 2200KV?
I am not familiar with these motors so I can not say anything regarding max rpm and amp.

Google is good help:
Model: LBP4074/2Y
Max Amps: 120A
Lipo Cell: 3-6s
Max Power: 2600W
KV(RPM/Volt): 2150
Resistance: 0.0062
No-load Current（7.4V） : 1.8A
Diameter×Length (mm): Φ39.8×73.8
Mounting hole depth: 7mm
Length of extend Shaft : 20mm
Shaft Diameter (mm): Φ5.0
Weight: 374g

Is this the one?

Anbjørn

[dasboata]

going to get the 2000 KV I will be running 5S

[dasboata]

» Motors » Leopard Motors




Click picture for details!
1 of 2
Product ID: leo-4074
Leopard 4074 Motor Details


Click picture for more detail.

Leopard 4074 Motor.
40mm Diameter bt 74mm Long Brushless Motor by Leopard Power. Hand wound for high efficiency of up to 90%. Comes with high quality bearings and neodymium magnets for high power. Includes endbells that are assembled with screws for both strength and ease of maintenance.

We offer this in 5 versions.

1050 Kv/rpm per volt
1400 Kv/rpm per volt
1774 Kv/rpm per volt
2000 Kv/rpm per volt
2200 Kv/rpm per volt

winds/rpm: 1050Kv Anodized Red (13)
1400Kv Anodized Black (14)
1774Kv Anodized Black (5)
2000Kv Anodized Black (19)
2200Kv Anodized Black (0)


Price: $94.80

Add a Watch

--------------------------------------------------------------------------------


Click picture for details! Product ID: leo-4082
Leopard 4082 Motor Details


Click picture for more detail.

Leopard 4082 Motor.
40mm Diameter by 82mm Long Brushless Motor by Leopard Power. Hand wound for high efficiency of up to 90%. Comes with high quality

[Anbjorn]

going to get the 2000 KV I will be running 5S

Me I would not hesitate to run the 2000 KV on 5S.
Speed would probably be 80mph +

However as as I mentioned I will run 1P good lipo pr motor.
2P would probably weigh too much add cause unecessary load to your setup.
I can also not see how to install that properly and get the correct CG.

Anbjørn

[dasboata]

Me I would not hesitate to run the 2000 KV on 5S.
Speed would probably be 80mph +

However as as I mentioned I will run 1P good lipo pr motor.
2P would probably weigh too much add cause unecessary load to your setup.
I can also not see how to install that properly and get the correct CG.

Anbjørn

Great so you think a 150Amp speed control would be fine

[Anbjorn]

Great so you think a 150Amp speed control would be fine

In general I would say no.
If you get some of the high end German esc's, maybe, but I would still not recomend it.
I would say get a couple of 180-200Amp esc's with some desent burst capacity.
But if you will be running on 5S with decent props I would try the Seaking 180.
Improve the water cooling and add extra caps to it.
Alot of people have good things to say about them.
Good value for the money I think
http://www.offshoreelectrics.com/pro...er-seaking-180
If you go that route you should also get the programming box for it.
Switch off the LVC and run the best lipos you can find.
If you prefer to have LVC I would use a separate unit.

I would also not use the BEC, use a separate receiver battery.

The new Castle esc's also seems interesting. More $ but I have heard that Castle has very good US warranty so that's probably worth it.
http://www.offshoreelectrics.com/pro...as-010-0086-00

Should be available shortly, some good info here:
http://forums.offshoreelectrics.com/...ad.php?t=21745

Hopefully the wires of the production units will be longer than on that picture.................

Anbjørn

[mike76]

hi
i run my Mystic C5000 44.8" cat with 2x neu 1527 1500kv and 2x hydra 240A hv
6s 5000 per motor x447 70mph 8 minute run
6s 5000 per motor proshop 5017/3 75mph 5minute run
7s 5000 per motor proshop 5017/3 86mph 3minute run
8s 5000 per motor proshop 5017/3 100mph 2minute run

but now i think neu 1527 is to heavy and torque alway broken my flex cable on 7s and 8s i received my new leopard 4082 2200kv more lighter
i tried this weekend 4s ,5s and 6s
here vid with neu 1527 6s ,7s, 8s prop shop 5017/3 75mph to 100mph

http://www.youtube.com/watch?v=nn2x2x2tMCA&feature=mfu_in_order&list=UL

[ScarabChris]

Well there you have it! 100 MPH in a 44" Mystic cat. Two minute run time but but thats a long hair raising 2 minutes. LOL

Nice looking boat too Mike!

Show the business end of that bad boy.