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Looking to get a new motor for a blackjack 29 with a hydra200HV esc and I would be running mostly 6s or possibly 8s...any suggestions on motor and props??? I recently fried a leopard 4074 1400kv on 8s running an octura x646... Any help would be greatly appreciated! Thanx!
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I'm curious why do you want to run a 6s setup in that boat? It's a good 4s boat. With a 4s upgrade from the stock motor, the boat should easily run in the 50's.
Jay -
Lookin to run 60+...if possible?Comment
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60+ with that hull? You had better do a lot of reinforcing of the hull. very few have survived crashes at 60+. If it was me, and I had a $300 esc, plus lets say a $150 motor. Going in a very light FG lay-up hull. I'd be asking, "What hull should I buy, that can take some 60+mph crashes. I'd look at the fighter Cat Cheetah. There have been many builds, where the Cheetah runs in the low 60's.Comment
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I have the hull strongly reinforced... Just need suggestions on a motor and prop sizes... Will eventually upgrade the hull! Any input on a motor and prop?Comment
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If you are wanting to run on 6s, I would run a Leo 4082 1450kv. But I seen that you burnt up a 1400kv on 8s. I would run the 1450 on, and 7s for saw runs. But if you are wanting a 6s setup thats very reliable run a Leo 4082 1250kv. On 6s rpm's 27,750/ 7s -32,375rpm/ 8s 37,00rpm's. On 6s and 7s it would be a very safe setup. And on 8s I'd run it as a saw setup.
But if your wanting to run on 8s. I'd run a Leo 4082 1000kv. 8s - 29,600rpm/9s -33,300rpm/10s - 37,000rpm. * an 9s would be sport running, and 10s is saw setup.
I have a TP 4092 980kv in my FighterCat Fantasm. It's a 41" cat, the 980kv on 9s. With a S235 prop, I've hit 69.2mph. Plus I can still prop up more to get more top speed. And with higher voltage, the lower the amp draw and heat will be.
Hope this helps some. What are you wanting to run most of the time on voltage? 6s,7s,8s?Comment
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Really appreciate the help! Mostly 6s...so I'm thinkin go with the Leo 4082 1250kv.. What prop sizes would you suggest?Comment
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I'd start out with a 45mm prop. Say a X445, M445, X645. And since your esc has data logging. Do a couple of runs. And see how much more you can prop up. Just remember, if you max out your prop on 6s. You'll have to run a smaller one on 7 or 8s.Comment
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Hey thanks man for all the help! I will post on this thread after I order and run the motor! I think I burnt the Leo 4074 1400kv because I ran it on 8s w/ an octura x646.. May have been too big of a prop? I haven't played with the data logging yet... I'm going to hook it up ASAP... I have an x645 layin around so ill start w/ that... How will the log let me kno I'm maxed out on prop?Comment
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Im not surprised you burnt the 4074 on 8s, over 41000rpm unloaded on an x646. To many rpm & to big prop for those revs.Comment
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Do you have anything smaller than the x645? I'd even try to run a X642. I've never had a CC esc, but with my SF esc's. After your run, hook it up to your computer. Download your run, and look at your max amps.If your max amps are close to the max amps your controler is, step down in prop size.
Plus the data logger will let you know stuff like ripple current, how well your batteries are doing, your motors rpm. Really it will tell you how your overall setup is.Comment
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Yea I'm gunna run it with an x642 first! I was actually debating wether or not to just go with the 4082 1000kv...because i will eventually get a bigger hull(FighterCat)!Comment
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The reality is, you aren't going to find a motor that will perform all the great on both 6s and 8s.
The problem, a good 6s motor will be too much kv for 8s, and visa versa, a good 8s motor won't really be enough kv for 6sComment
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I hear ya. For me, when I find the optimal kv for a given cell count, say 5s, going down 1 cell is just kinda boring...
It's like going from an orgy to married under the covers...Comment
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