Stretch VS. Non-Stretch - HeliFreak
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Old 10-03-2017, 12:10 PM   #1 (permalink)
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Default Stretch VS. Non-Stretch

Im sure this question has been asked before but I have a more specific question relating to the matter.

Does the stretch make it feel much bigger in the sense that you aren't able to keep it in as tight of an area as before? Or is it more stable and controllable that you are able to keep it tighter?

I am rebuilding after a crash and am trying to decide if I should keep it at 255mm or stretch it to 285mm while I'm at it.
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Old 10-03-2017, 12:44 PM   #2 (permalink)
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After stretching mine I feel like it flies a little bigger, but not by a huge amount. A more pronounced difference is the feel, it flies lighter and the collective feels more powerful. I get a little less flight time with it, but again not a huge difference.
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Old 10-03-2017, 04:11 PM   #3 (permalink)
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After stretching mine I feel like it flies a little bigger, but not by a huge amount. A more pronounced difference is the feel, it flies lighter and the collective feels more powerful. I get a little less flight time with it, but again not a huge difference.

I second this. I just did the stretch and it made a noticeable difference in collective response and, for me, made for a better balanced control feel. It is still plenty agile. Well worth the money and time imho. I was contemplating selling it until I did the stretch, now it's a definite keeper!
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Old 10-05-2017, 10:37 AM   #4 (permalink)
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Cool thanks guys! Sounds like I will have to try the stretch then!

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Originally Posted by gstoneberg View Post
After stretching mine I feel like it flies a little bigger, but not by a huge amount. A more pronounced difference is the feel, it flies lighter and the collective feels more powerful. I get a little less flight time with it, but again not a huge difference.
I'm a little worried if my flight times will go down though with the stretch. Because I'm only getting 3:00 min flights as is. I was thinking the flight time would go up with the stretch because with the bigger blades I might be able to run a lower headspeed?
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Old 10-05-2017, 12:57 PM   #5 (permalink)
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Cool thanks guys! Sounds like I will have to try the stretch then!



I'm a little worried if my flight times will go down though with the stretch. Because I'm only getting 3:00 min flights as is. I was thinking the flight time would go up with the stretch because with the bigger blades I might be able to run a lower headspeed?
I didn't notice an appreciable loss in flight time. I'm using Pulse 4s 1350's and remained at 4 minutes. Still come down at 3.80 volts per.
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Old 10-05-2017, 03:38 PM   #6 (permalink)
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The biggest driver is headspeed.

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Old 10-05-2017, 10:55 PM   #7 (permalink)
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Yep, slow it down.

I get 10 min with a 4S 10T setup @ 2400 rpm, I feel you could do smooth 3d with decent collective management at about 3000 rpm and still get like 5+ minutes.
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Old 10-06-2017, 12:03 AM   #8 (permalink)
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Yep, slow it down.

I get 10 min with a 4S 10T setup @ 2400 rpm, I feel you could do smooth 3d with decent collective management at about 3000 rpm and still get like 5+ minutes.
2400? What are you able to do at that.head speed? I do like slowing things down though
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Old 10-07-2017, 01:34 AM   #9 (permalink)
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I pretty much fly scale/sport at 2400/2600/2800 gov settings.

I would think you could at least flip it at 2600 and sustain inverted at 2800.

This is a thread about low HS oxys.

https://www.helifreak.com/showthread.php?t=765565

If you watch George's video he can fly it inverted at 2600.
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Old 10-07-2017, 10:15 AM   #10 (permalink)
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I pretty much fly scale/sport at 2400/2600/2800 gov settings.

I would think you could at least flip it at 2600 and sustain inverted at 2800.

This is a thread about low HS oxys.

https://www.helifreak.com/showthread.php?t=765565

If you watch George's video he can fly it inverted at 2600.
Sweet!

I just watched his video and seemed like it had plenty to fly sport, even a little inverted. Probably really good for learning collective management.
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Old 10-08-2017, 06:40 AM   #11 (permalink)
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Now that I've stretched mine I need to revisit that and see how it has changed everything. It isn't as much fun for me when the head speed gets really low. I like enough margin that I don't crash if I get a little sloppy with the collective. At the lowest speed I tried, just lifting off and flying a circuit was challenging as you're holding full collective to just barely climb. Turn a little too tight, and it's going to crash. If I were setting up a heli just for low head speed I'd put in more collective pitch than normal.

Matt, when you flip it at low head speed, be prepared to really get after the collective. It takes a lot more collective stick movement to catch it inverted than you're used to using. I let mine settle right into the ground that first time trying to do it like I was used to. I found the simulator to reproduce that pretty well at low head speed. Turn the RPM down on a 700 to about 1000.
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Old 10-08-2017, 08:38 AM   #12 (permalink)
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Originally Posted by gstoneberg View Post
Now that I've stretched mine I need to revisit that and see how it has changed everything. It isn't as much fun for me when the head speed gets really low. I like enough margin that I don't crash if I get a little sloppy with the collective. At the lowest speed I tried, just lifting off and flying a circuit was challenging as you're holding full collective to just barely climb. Turn a little too tight, and it's going to crash. If I were setting up a heli just for low head speed I'd put in more collective pitch than normal.

Matt, when you flip it at low head speed, be prepared to really get after the collective. It takes a lot more collective stick movement to catch it inverted than you're used to using. I let mine settle right into the ground that first time trying to do it like I was used to. I found the simulator to reproduce that pretty well at low head speed. Turn the RPM down on a 700 to about 1000.
Thanks for the tip. I'll try it a bit on the sim first.
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