scorpion 5035 500KV

[bedrock]

Hi all

Just picked up a scorpion 5035 500KV outrunner.......Its nuts!!!!!!

Should be around 21000RPM on 12S

Thinking of running this in a 38inch Rigger

Anybody running these scorpion Motors???

Dean
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Roll blunts

[ED66677]

there are few, these are good motors, very good reputation in heli!
21000rpm in a rigger sounds not enough, I'm not a rigger expert though!

[Fluid]

I'm afraid you will be very disappointed with that motor in your rigger. A 38" rigger is a good size for 6S but is not appropriate for 12S and that motor. Your motor rpm is so low you will need a prop with huge pitch to achieve any decent speeds. As an example, to go 120 kph you'd need a prop with at least 4.5" of pitch. With most prop makers that means 65-70mm of prop diameter, which will cause ungodly prop walk on a smaller rigger like yours.

If you are looking for more speed with your rigger, this is not the way to go. The 1521/1Y you had should have gotten you there with the right prop and setup - assuming the rigger was of a good design.

That is a rather strange looking rigger. Does the design have a history of running 120 kph? Some riggers will simply not go really fast if their sponson design isn't right or the setup is wrong. What is the weight distribution on the sponsons and on the prop in percent? What is the angle of attack on the sponsons with the model resting on the sponsons and the bottom of the strut? Does the rigger run with the transom high off the water?

Do you have anyone with rigger experience near you who can assist in setting up the rigger? Shame, I was in Melbourne for 6 weeks last year with nothing to do on the weekends......


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[Xfactor]

I agree. That bad boy will need a big prop and a big boat to go with it. If it were me Id hook up with andy brown @ cdmi racing and have them cnc a prop with your motor in mind.

[Xfactor]

That rigger in the pdfs looks boss to me. That motor needs a bigger home though.Youre smart obviously u got some nice stuff on you website . I love the OEM diy stuff u do.Make a big rigger for it. I dont know a 50 inch or 60 inch rigger?????

[Fluid]

If it were me Id hook up with andy brown @ cdmi racing and have them cnc a prop with your motor in mind.

Good luck, word on the street is that these have been discontinued for quite some time. There were a lot of disappointed buyers anyway, delivery time was the chief complaint...


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[bustitup]

Good luck, word on the street is that these have been discontinued for quite some time. There were a lot of disappointed buyers anyway, delivery time was the chief complaint...


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yup andy is very talented but when it gets to a point when he (or his secretary)doesnt answer there phone when you have an order coming then its time to find another source for custom props

[bedrock]

Thanks guys will leave this one for another progect......


Fluid - Yes this rigger has been around the 128km\h mark I believe
I have a few other props 1955 1655 and 2045 will try these in this rigger see what speed I can get from this Rigger using my 1521 1Y

AOL is approx 4Deg - Weight is ok COG is 1.5inches behind the sponsons



Noticed you have used some other Scorpions....
I was origanly looking at the 4035 800KV on 10S

You have some experiance with the 4025 1100KV?
________
Herbal grinder

[Fluid]

The sponson AOA is on the low side for a non-SAW rigger but probably okay. You didn't answer the CG question, I find % weight far more useful when shifting the CG on riggers. Your current position may be too far forward, especially when using lifting props. The boat should loosen up by shifting the CG back, try ~40% on the prop.

I've run my HK4025/6 quite a bit, it's a good sport motor for 6S cats and monos. However, it will never come close to a Neu or Lehner because of its limited amp draw capability. In my SprintCat 40 on 6S1P it runs around 50 mph and is a lot of fun. On 6S2P and a Neu 1527 the same boat runs over 60 and is a beast on the race course. I like the Scorpion but is is not a race motor, at least not where I play.


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[bedrock]

Fluid

Thanks for your input

I want to run a 1527 1Y but none around - Steven says they should be back in stock soon

Not sure if there is another motor around with the same power?????
Seems stock in low everwhere!!!!

will get the rigger out in the next few days with a different prop and look at the weight...

Dean
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BONG PICTURES

[Fluid]

The 1527/1Y is a great 6S motor, I run one in my 34" SprintCat 40 and get 60 mph in oval race trim, I can run a full mile plus a lap with this setup and heat is not a problem. In the right rigger for a few quick passes it should do 75+, but the 1527/1.5D is probably a better rigger motor on 6S. A club member runs one in his 37" sport hydro on 6S and it is wicked fast.


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[Xfactor]

Hey Bedrock tu might try something like this on that big 500 kv can u got. CNC'd I bet you wont wait more than 2 weeks on these.

[photohoward1]

Go with a 1/4" cable and use Gas Props. at 10s You are Turning about the same R's as the gas guys. Start with a 2615 abc or some VooDoo 70mm props.

This is what i ran in my Mono with a 500KV motor.

Stop thinking you need RPM to go fast. Gas riggers go 80mph and they only spin 18-19k.

[Xfactor]

You still gotta watch your amperage draw. I was thinking more like 8 s but 10 s is cool too. Theres a 75mm 124mm pitch out there and its cnc'd

[Xfactor]

yeah he cant run that prop on a 38 inch rigger though. I was merely saying here are some props that would be compatible. He needs to do a zippkit rocket ->179.00 or something like that. A big cat possibly -> 41 inches $$145.00