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Speed Helicopters Speed Helicopters. Any brand as long as it goes FASSSSSSSSSTTTTTT!


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Old 12-11-2015, 06:21 PM   #1
majorlemond
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Default Newbie - First "speed" heli Goblin 500! :)

I'm more of a dirty 3D guy, but I recently put a KDE 550xf motor in my goblin 500 (4.5kW) as an upgrade to the stock motor.

I must say that I know basically nothing about speed helis.... But,
I have to say I'm pretty impressed with how fast it goes, and I didn't realize how much fun doing speed runs in it could be

Now I'm thinking "how can I make it go faster?"

In a snap shot my setup is:
Goblin 500
Sk540
Rail 516mm mains (current setup 12 degrees pitch @ 2500 in IU2)
Edge 86mm tails
Yep 120a LV speedie. (Using sk540 governor though)
Kde 550xf G3 1200kv
Gens ace 4400mah 65c 6s


Not looking to break records, I just want to push it!
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Old 12-12-2015, 03:12 AM   #2
Thunder Fighter
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Probably 3 main things will have the most impact on the speed with your setup:

Practice
Increase Pitch
Increase Headspeed

Start increasing your pitch and headspeed but keep an eye on your ESC and packs as they will be the weak points in the setup.

I have run my G500 is speed comps and for the 500-550 class it was a great option.

//Dennis.
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Old 12-12-2015, 06:56 AM   #3
KiloXray
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https://www.helifreak.com/showthread.php?t=714548
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Old 12-31-2015, 02:57 PM   #4
Airboss
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you also have to learn not to lose energy in turns and practice "split S" or other variations
My Urukay with the HPS3 blade gets 80-100mph very easily
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Old 01-05-2016, 10:22 PM   #5
ian.newson
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Quote:
Originally Posted by Airboss View Post
My Urukay with the HPS3 blade gets 80-100mph very easily
Honestly I'm a little surprised by that. My 630C gets over 80mph without any concern for technique.
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Old 01-06-2016, 10:40 AM   #6
Airboss
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Quote:
Originally Posted by ian.newson View Post
Honestly I'm a little surprised by that. My 630C gets over 80mph without any concern for technique.
wonderfull
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Old 01-08-2016, 11:04 AM   #7
Ninealign
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X speed blades, more pitch, more headspeed. You've got good stuff in there for speed.
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Old 01-08-2016, 11:09 AM   #8
Justin Pucci
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Default Newbie - First "speed" heli Goblin 500! :)

Please do not increase pitch before first CG'ing the model correctly, increasing headspeed and then getting your technique nailed down. Otherwise, you're in danger of pitch-ups due to retreating blade stall.

See a detailed explanation in the link that KiloXray provided above.

For the Goblin 500, you should be looking at 2800-3200 with 12-13 degrees of pitch and a nose-down CG of approximately 10-15 degrees. Also, drop your tail blade size down to 70-75mm for less tail power loss in your runs. That combined with proper technique will get you average speeds in the range of 100-115mph.

Once you've got that down and are comfortable, you can move up to 14+ degrees of collective.

Good luck and keep us posted on your progress!

Cheers,
- Justin
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Old 11-14-2016, 12:38 PM   #9
slikwrik
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majorlemond, how is your speed G500 going? Have you enjoyed it?

Trying to retrofit one of my own into a lean mean G500 speed machine
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