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HomeAircraftHelicopterHelicopter Main Discussion › R30 itch -> Modern Electric
01-25-2012 06:56 PM  6 years agoPost 1
darkfa8

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Brick, NJ - USA

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I once flew a Raptor 30 5-6 years ago and really loved it. Especially the flight times. I've been itching to have one ever since then even though I no longer have any nitro-specific support equipment (I went all electric some 2+ years ago).

I'm polling you all to find out what modern comparable (500-550mm bladed) sized electric will give similar performance and those massive 10+min flight times?

Has anyone managed to pull this off without resorting to the 'ole liquid fuel burners?

- Dan Goldstein
Team Revolectrix

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01-25-2012 07:22 PM  6 years agoPost 2
Richardmid1

rrProfessor

Leeds, England

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A geared down Trex 550 will do 10 mins if you only want Raptor 30 performance. 12T pinion and run it 100% flat will give 1900-2000 HS. Not sure what a Raptor 30 runs at? 1850-1900?

Failing that an 11T would give around 1800 rpm and would still probably feel more powerful than a Raptor 30.

60% of the time, it works every time!

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01-25-2012 07:26 PM  6 years agoPost 3
darkfa8

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Brick, NJ - USA

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The Raptor 30 probably was running between 1800-1900 from what I can remember.

- Dan Goldstein
Team Revolectrix

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01-25-2012 07:32 PM  6 years agoPost 4
Richardmid1

rrProfessor

Leeds, England

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You could try 11T then, all depends how you fly it but my guess is you would get 10 mins out of a 6s 5000mah pack.

You going to try it?

60% of the time, it works every time!

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01-25-2012 07:34 PM  6 years agoPost 5
miker

rrApprentice

north port fl

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hey was that raptor 30 mine?

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01-25-2012 07:45 PM  6 years agoPost 6
darkfa8

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Brick, NJ - USA

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Mike,

Yes, it was your R30 that I really enjoyed flying at that school. I wished I could have stayed later, but I had a date with my significant other (now fiancee'.

- Dan Goldstein
Team Revolectrix

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01-25-2012 08:23 PM  6 years agoPost 7
BeltFedBrowning

rrKey Veteran

Kansas City

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I have my Outrage 550 spinning 1800 RPM with 6s 5000mah lipos. I have the timer set at 8 minutes. It is still very agile and powerful, more so than the R50 I used to fly.

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01-25-2012 08:42 PM  6 years agoPost 8
Richardmid1

rrProfessor

Leeds, England

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How much are you putting back in the packs after 8 mins?

60% of the time, it works every time!

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01-25-2012 08:55 PM  6 years agoPost 9
Jag72

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South of Boston

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Logo 10
I remember about 5-6 years ago when I was flying my logo 10 spinning 500mm blades on a 4s 8000mah setup...only running 12C ...but it would do flips and rolls and everything else a rap 30 could do...

That would run for 25 minutes + on that setup.

I remember people saying they were getting 40minute flights on the 4s 8000mah setups...but were spinning very low HS

I used to love flying the 30 sized nitro though...20 minute flights

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01-25-2012 09:10 PM  6 years agoPost 10
Richardmid1

rrProfessor

Leeds, England

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Hmm a Trex 500 with stock gearing and 2x 4s 4000mah packs in parallel would be about the same right? The 17T pinion that comes in the kit would give you 1800 rpm on 4s. Can you remember what headspeed you were running on the Logo 10 Jag?

60% of the time, it works every time!

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01-25-2012 09:14 PM  6 years agoPost 11
Flying Brian

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St. Clairsville, Ohio

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I always liked the hirobo Lepton EX. I could fly 8-10 minutes.

"I just don't Listen" "

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01-25-2012 10:10 PM  6 years agoPost 12
ticedoff8

rrKey Veteran

Morgan Hill, CA. USA

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A Trex 700 on 12s turning at 1650 - 1700 is good for 10 min+ times.

Heck, I used to get 8 min on a Trex 450 Pro turning at 2250 w/ 3s. I used to get rude comments from the other guys waiting for me to finish.

It really just depends on the head-speed.

Fully equiped weight of a Raptor 30 V2 is 6.6 lbs with a 49" rotor span and a 9.56:1 main gear ratio.
http://webcache.googleusercontent.c...s&client=ubuntu

The OS 37SZ-H is rated at 18,000 rpm
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXHEX0

At 18,000 rpm, the head is turning at 1880. Does this sound about right?

Compare that to a Trex 600:
http://www.helifreak.com/showthread.php?t=288624
About 7.5 LBS and I hear people are running them at 2000 / 2100.
Main rotor span is listed as 1350mm (about 53".

I would say the Trex 550 might be a closer comparison to the R-30.

If you are all electric, then run a slower head speed on a Trex 550 and see how you like it.

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01-25-2012 10:20 PM  6 years agoPost 13
Jag72

rrProfessor

South of Boston

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logo 10
the logo 10 was actually spinning 500mm blades as opposed to the trex 500 spinning 430's

I had a hacker motor and a schulze esc that would spin the head right around 1850-2000

at 1850 it would do lazy loops and rolls etc...at 2000 it was much better and could do funnels/flips etc...but forget about tic tocs piro funnels etc...

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01-25-2012 10:51 PM  6 years agoPost 14
BeltFedBrowning

rrKey Veteran

Kansas City

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Here is a good read about low headspeed/long flight time.
https://rc.runryder.com/t520671p1/

https://rc.runryder.com/t580438p1/

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01-26-2012 01:27 AM  6 years agoPost 15
taxus812

rrApprentice

Conecticut - USA

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My raptor 30 flys best at 1950.

Man is so anxious about his future that he does not enjoy the present. - Dalai Lama

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01-26-2012 05:29 AM  6 years agoPost 16
PJRono

rrKey Veteran

Minnesota, Ya!

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I just converted a R50 to a E-R30 FBL. I used the 30 gears (96/9) and Align 600MX motor with CC Phoenix 80 ESC. Swinging 550s at 2100-2300 rpm. Best runtime with this setup comes around 1950 or so with just a little more power than a normal 30. I like it better around 2150 rpm as it's snappier with a still decent runtime of 5-6 minutes.

If you skip me I can't play!

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01-26-2012 11:12 AM  6 years agoPost 17
Richardmid1

rrProfessor

Leeds, England

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Jag we are talking 550 which in its stock form has 520mm blades not a 500 which has 425mm blades.

60% of the time, it works every time!

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