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Old Mar 07, 2013, 11:50 AM
Return of the Warlord
vernon7026's Avatar
United Kingdom, England, Wallington
Joined Aug 2009
209 Posts
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Genesis motor upgrade

Hi

I am looking into the near future of upgrading the motor in my genesis >

Alot of people talk about leopard 40 series(upgrade), but my mount is for 36 motors

I would prob upgrade to a 1900kv leopard 36 motor ,
to run on 5s and 6s

Whats the difference between these 2 sizes of motor, i am sure a 36 size 1900kv would be sufficient or even 1700kv

Just curious
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Old Mar 07, 2013, 02:33 PM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
Joined Jul 2007
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The 40 series motors fit on the mounts in the Genisis
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Old Mar 09, 2013, 08:39 AM
Steps? What steps?
zozer's Avatar
United States, TX, Humble
Joined Jan 2010
223 Posts
The 40mm motors are stronger than the 36mm motors of equal length - they have more torque and handle heat better. For the relatively large Genesis hull the 40mm motors will work better for you, swinging a larger prop for more speed without having to run silly-high rpm.

For example, you do NOT want a 1900 Kv motor for 6S. That is too much rpm for general sport use unless you just want short SAW runs. The high rpm (near 40,000) will wear out drivelines and makes prop choice critical. The risk that you'll burn up your ESC or puff your packs is much higher. A Kv of 1500 should be max for most 6S applications.


.
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Old Mar 14, 2013, 12:39 AM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
Joined Jun 2008
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Consider this 4 pole 3674 motor. I run several of theseTurnigy's in different kv's and in land rigs too, love 'em! Well made in my opinion and inexpensive, this motor in the 1400kv on 6s will easily put out 30-40% more power than the stock, cheapy 2 poler on 4s. It will be a direct drop-in with no need to buy a new cooling jacket.

http://hobbyking.com/hobbyking/store..._Inrunner.html
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Old Mar 14, 2013, 06:39 PM
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Joined Oct 2007
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hello,

a TP power 3640L 9D with 2x3S 5000 in serie 40c pack, a turnigy 180 and a X445 will give you 60-65 Mph. You can also take the 8D with 5S6000, splitted in 3S and 2S. the 3S can sit to
compensate for torque.
You also have to use an offst rudder, and to raise the strut the prop axle should be at 8-10mm above the sponsons (waterlevel)
the strut holder needs to be modified to allow the strut raising.
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Old Mar 15, 2013, 06:14 PM
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The Turnigy 4074 44.83 usd.

http://www.hobbyking.com/hobbyking/s..._for_Boat.html

Is a monster in front of a Leopard they say, and 40% cheaper...
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Old Mar 24, 2013, 04:04 PM
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That turnigy 4074 2000kv is great but they say is only for 4s use ?? I want 5s use
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Old Mar 24, 2013, 05:28 PM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
Joined Jun 2008
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Quote:
Originally Posted by vernon7026 View Post
That turnigy 4074 2000kv is great but they say is only for 4s use ?? I want 5s use
They're just covering their butt, you can run 5s if you use the "correct" prop.............don't know if you need it though, just use a 6 series prop with more diameter on 4s............

Here are some of the comments on that motor page on Hobbyking:

"i got one and tryed on 5s and is awesome motor well worth money no problem with heat drawing 122amps only way less on 4s lipos on 4s set up recommended cheers"

"i use this on 5s lipos 2ith 38mm prop and is awesome no problems at all so far very good quality engine and is cheap recommended"

"5s works on this motor. just tried it on my hk pursuit with t180esc, x648 & 5s2p. motor was 93degree n esc was 90degree. if you want to see vids search " hk pursuit on 5s & x648" on youtube"
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Old Mar 25, 2013, 07:20 AM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
Joined Jul 2007
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For a budget motor on 5s with an Octura M545 prop, this motor would be my choice in a Genisis.

http://www.hobbyking.com/hobbyking/s..._Inrunner.html

A better one on 5s would be the TP Power 4082 1610kv on special for $69.99 at Kershaw Designs on this page.

http://www.kershawdesigns.com/Brushl...rs-TPPower.htm

Cheers.
Paul.
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Old Mar 25, 2013, 01:14 PM
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Joined Oct 2007
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I will not say that these recommandations are bad, but why use oversized motors?
Two friends are using TP 3640L /1770 with X445 props, on 6s5000 Nanotech, speed is 65+mph.. It does not make sense to put more battery weight and this boat is not fast in the turns. Big props are not recommended also.
the turnigy 4074 on 5S is a good choice also, but you need high"C" batteries

Vincent
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Old Mar 26, 2013, 02:11 AM
RELAX. You'll live longer
785boats's Avatar
Brisbane- Australia
Joined Jul 2007
3,292 Posts
Vincent.
Did you not read Zozers' post? You will come around to that sort of thinking.
The 40 series motors are not oversized. they are just running closer to their efficiency curve on a prop that is suited to the boat. Therefore less amp draw & less energy wasted in heat & therefore longer run times. That little 36 series 1770kv motor spinning an X445 prop must be working hard. That's too much on 6s to my way of thinking. Nearly 39,000 revs unloaded.
The setups on 5s are actually less battery weight than the 6s setups. So I'm afraid I don't understand your comment on battery weight.

Cheers.
Paul.
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Old Mar 26, 2013, 04:47 AM
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Joined Oct 2007
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I can agree, oversized is not the good word, but it is really conservative for 30-35 krpm;
If the Genesis owner is happy with 50 Mph speed and good run time, why not?
Yes, batteries are stressed with a 1770 Kv motor, but not the motor...
3640L 9D is more adequate for 6S

Cheers
Vincent
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Old Mar 26, 2013, 10:41 AM
I feel the need for speed!
scorpion1's Avatar
Southern U.S.
Joined Jun 2008
7,332 Posts
Quote:
Originally Posted by scorpion1 View Post
Consider this 4 pole 3674 motor. I run several of theseTurnigy's in different kv's and in land rigs too, love 'em! Well made in my opinion and inexpensive, this motor in the 1400kv on 6s will easily put out 30-40% more power than the stock, cheapy 2 poler on 4s. It will be a direct drop-in with no need to buy a new cooling jacket.

http://hobbyking.com/hobbyking/store..._Inrunner.html

Well, I still stand behind my "not oversized" direct drop in motor in my earlier post above....................mid/high 40's.
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