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Author Topic: Hubin Timer Question  (Read 1216 times)

Offline Vincent Judd

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Hubin Timer Question
« on: May 01, 2018, 03:10:15 PM »
Timer is set for 6 minutes.  Plug battery in and start the motor to check the RPM.  Run the motor for 30 seconds then stop it using the stop/start button.

Once the motor is stopped, will the timer automatically reset to 6 minutes, or is it still counting down from 6 minutes, thus I get a 5 minute and 30 second flight?  I guess the sure way to get the full 6 minutes is to disconnect the battery and then reconnect it.  That should reset everything.

I think I just answered my own question, maybe not.    H^^

Better to be safe, I hate it when the plane quits in the middle of the clover (that can end badly). 

Offline Jim Damerell

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Re: Hubin Timer Question
« Reply #1 on: May 02, 2018, 04:00:17 AM »
Since no one else is jumping in, I believe the Hubin timer will not restart until power is removed and reconnected.

Offline Mike Haverly

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Re: Hubin Timer Question
« Reply #2 on: May 02, 2018, 07:00:35 PM »
You don't need to check RPM after you start.  If you want to adjust for speed run 2 minute flights and adjust for lap time after landing by changing the RPM in the timer.  Also, you don't need 6 minutes for a pattern.  Most of us in these parts run 5:15 to 5:25.  Usually we set the "delay" in the timer for 30 seconds, this will end up with approx. 6 minute flight, a little over counting landing.  If you find you have a lot of battery reserve left, you are in luck.  Use a smaller battery.
Mike

Offline Dennis Adamisin

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Re: Hubin Timer Question
« Reply #3 on: May 02, 2018, 07:13:04 PM »
Timer is set for 6 minutes.  Plug battery in and start the motor to check the RPM.  Run the motor for 30 seconds then stop it using the stop/start button.

Once the motor is stopped, will the timer automatically reset to 6 minutes, or is it still counting down from 6 minutes, thus I get a 5 minute and 30 second flight?  I guess the sure way to get the full 6 minutes is to disconnect the battery and then reconnect it.  That should reset everything.

I think I just answered my own question, maybe not.    H^^

Better to be safe, I hate it when the plane quits in the middle of the clover (that can end badly).
Hi Vince

Once you mannually stop the timer you have to disconnect the power again to restart the power on sequence.  You will of course retore your flight duration time setting.
Denny Adamisin
Fort Wayne, IN

As I've grown older, I've learned that pleasing everyone is impossible, but pissing everyone off is a piece of cake!

Offline Vincent Judd

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Re: Hubin Timer Question
« Reply #4 on: May 03, 2018, 05:10:08 AM »
You don't need to check RPM after you start.  If you want to adjust for speed run 2 minute flights and adjust for lap time after landing by changing the RPM in the timer.  Also, you don't need 6 minutes for a pattern.  Most of us in these parts run 5:15 to 5:25.  Usually we set the "delay" in the timer for 30 seconds, this will end up with approx. 6 minute flight, a little over counting landing.  If you find you have a lot of battery reserve left, you are in luck.  Use a smaller battery.

Hi Mike, thanks for your reply.

The six minute number was purely hypothetical.  Brand new airplane and power system as well as a 3 bladed prop which I've never used before.  Actually the first few flights will be 2 minutes each for trimming purposes. For my first full pattern attempt, I will use 6 minutes just for a margin of safety.  As you suggested, I'll dial it back once I get a baseline on pattern duration.

It's funny you mention the 30 second delay.  I've used that, and I always feel like I'm standing out there forever, waiting for the motor to start.  For competition, I reduced it to 20 seconds and it seems more comfortable for me.  If I'm flying alone with my stooge, I usually leave it at 30 seconds.

Offline Vincent Judd

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Re: Hubin Timer Question
« Reply #5 on: May 03, 2018, 05:11:08 AM »
Hi Vince

Once you mannually stop the timer you have to disconnect the power again to restart the power on sequence.  You will of course retore your flight duration time setting.

Thanks Dennis, much appreciated.  Kind of figured that, but wanted to verify.

Offline Jim Mynes

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Re: Hubin Timer Question
« Reply #6 on: May 03, 2018, 06:43:08 AM »
Hi Mike, thanks for your reply.

The six minute number was purely hypothetical.  Brand new airplane and power system as well as a 3 bladed prop which I've never used before.  Actually the first few flights will be 2 minutes each for trimming purposes. For my first full pattern attempt, I will use 6 minutes just for a margin of safety.  As you suggested, I'll dial it back once I get a baseline on pattern duration.

It's funny you mention the 30 second delay.  I've used that, and I always feel like I'm standing out there forever, waiting for the motor to start.  For competition, I reduced it to 20 seconds and it seems more comfortable for me.  If I'm flying alone with my stooge, I usually leave it at 30 seconds.

Personally, I wouldn’t jump from a 2 minute flight straight to 6 minutes. That might bring your battery down too low, unless you do some fancy cipherin’ and crunch the numbers real good.

I generally do several 2 minute flights to get lap time and wings flat, then a 2:50 flight with some maneuvers to gauge battery consumption. 2:50 is half of my 5:40 ‘pattern time’, and makes it easy to know if the battery will be sufficient. If I land with >60%, then 5:40 is doable.
I have seen the light, and it’s powered by a lipo.


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