HP05 low headspeed possible?

[anmatheextreme]

Hello everyone,

So I run my bird outside after conversion and has 15 flights on it, using 300 mah lipos. For outside its holding great governor and tail at 68% flat in Gov-endpoint mode (9t pinion) after I converted my 300s to micro deans. I also want to fly inside my house if the weather is bad. What I want now is lower headspeed without having to change out the pinion, but also not start to run on bad inefficiency on the motor with low % on the TX. I tried 50% with Gov Arm and tail mix 100-75-50-75-100 and it was holding great but my battery died i short time, it was like I was running the 68% that I run usually. So I think it is inefficiency the problem here, but how much % should I start with for lower HS? What are you all reccomending?

Regards,
Andrew

[DoubleCH]

Gov-endpoint mode? I assume you mean Gov-Arm mode. I've run my hp05s/9T down to 50% and even a ridiculous 30% with 550 batteries no problem, with flight time extended to 7min+. Same results with double-FET DP3A and Hawk-RC XP12A.

[anmatheextreme]

Originally Posted by DoubleCH

Gov-endpoint mode? I assume you mean Gov-Arm mode. I've run my hp05s/9T down to 50% and even a ridiculous 30% with 550 batteries no problem, with flight time extended to 7min+. Same results with double-FET DP3A and Hawk-RC XP12A.

With Gov-endpoint I mean the mode that you determine headspeed by a flat TC. Maybe the battery I used was not fully charged?

[itsmillertime0]

Originally Posted by DoubleCH

Gov-endpoint mode? I assume you mean Gov-Arm mode. I've run my hp05s/9T down to 50% and even a ridiculous 30% with 550 batteries no problem, with flight time extended to 7min+. Same results with double-FET DP3A and Hawk-RC XP12A.

Same here. Went 9 minutes on a 30% hp05s on a triple fet xp-3a.

[DoubleCH]

Originally Posted by anmatheextreme

With Gov-endpoint I mean the mode that you determine headspeed by a flat TC. Maybe the battery I used was not fully charged?

There's Gov-Tx mode that reds throttle value real-time thus requires a flat throttle curve but no Gov-endpoint mode.

Running a highly throttled low headspeed reduces energy overall but when motor accelerates in such situation it's more demanding on instantaneous power from the battery. Hyperion 550 can handle such situation with any low hp05s headspeed no problem,or even low hp06v2 headspeed, but marginal with low hp08s/16500kV headspeed. I'm not sure about 300mAh batteries. My guess is they should be OK with low hp05s headspeed but if your 300mAh batteries are old and weak that could be a problem.

[DoubleCH]

Originally Posted by itsmillertime0

Same here. Went 9 minutes on a 30% hp05s on a triple fet xp-3a.

If that's on your minicp, specify it. Don't give misleading info.

[anmatheextreme]

Originally Posted by DoubleCH

There's Gov-Tx mode that reds throttle value real-time thus requires a flat throttle curve but no Gov-endpoint mode.

Running a highly throttled low headspeed reduces energy overall but when motor accelerates in such situation it's more demanding on instantaneous power from the battery. Hyperion 550 can handle such situation with any low hp05s headspeed no problem,or even low hp06v2 headspeed, but marginal with low hp08s/16500kV headspeed. I'm not sure about 300mAh batteries. My guess is they should be OK with low hp05s headspeed but if your 300mAh batteries are old and weak that could be a problem.

Yes thats what I wanted to say, but couldnt remember the name of the mode
The 300s are brand new with 3 flights each and have been converted to micro deans. Those 550s are becoming more and more tempting. I will try again tomorrow and will make sure the battery is fully charged. Will also see an estimation of the temps on motor/esc/battery. And wow, 9 minutes seems almost impossible to me, even on 550mah hyperions.

[itsmillertime0]

That was on a mini cp. But with the same main motor, tail motor, esc's, gear ratio and main blade and tail blades I would imagine the receiver/ servos would make much of a difference. That was also an undemanding 9 minutes of hovering around/ slow flight. Go ahead and get the 550's. The small amount of extra weight won't be an issue for the hp05 and when you get ready for a bigger motor you'll already have the batteries for it.

[DoubleCH]

IMO, hp05s is better run with 550 battery than 300, with at least 120SR tail if not brushless.

[anmatheextreme]

Originally Posted by DoubleCH

IMO, hp05s is better run with 550 battery than 300, with at least 120SR tail if not brushless.

I am using an 120sr tail, I guess its power hungry and really heavy, I have to put the 300 battery on the nose of the heli and still a little tail heavy. I am placing an order on the 550s now (I hate you helifreaks, you always push me to buy new stuff on this hobby, you have a very bad influence on my wallet )

[Drivinfast247]

I run 2 300mah in parallel. Get 5 min run times.

[anmatheextreme]

Well I found what was wrong, the battery I used was just converted to μdeans, but I guess I had a cold solder joint or something, while my other 3 batteries have 70mΩ IR, this one had an IR reading of 238mΩ. So, question solved, an hp05 will run at low hs with good runtime.

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