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Power Rangers


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#301 Tendele

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Posted 04 April 2016 - 02:44 AM

A good point. I realise it will be a mammoth task and its true what you say about temperatures, heated bands etc etc.
Cheers anyway.

#302 busySteve

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Posted 21 May 2016 - 12:27 PM

Hi Folks!  This is my first Power Ranger submission.  I hope it earns me something...  I hope I did it right.

 

Slingshot: Natural Crepe Myrtle tree fork 

Bands: One Thera-band Gold band per side 1.125" to .75" taper 12 inches long 

Pouch: Pig skin about .050" thick

Ammo: 54 cal lead ball .530" by Hornady - 14.45 grams / 223 grains

Calculated Energy Minimum :   26.849 joules (fpe)

 



#303 Henry the Hermit

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Posted 21 May 2016 - 04:19 PM

 

Hi. I posted this same topic under the Speedfreaks thread. It would be nice to know what the best speeds and FPE ( Speedfreaks and Power rangers) are for conventional hand held slingshots as apposed to Starships. Its obvious that there is an advantage to shooting with a Starship as the draw length is so much greater. I dont want to rock the boat but it would be nice if the two were separated so us users of typical slingshots could see where we stand against others using the same type of equipment.
I suppose it would be very time consuming to go through all the current submissions to separate the two unless the moderators already have the details of what type of slingshot was used when the attempt was made.

 

I do understand where you are coming from. But as you note, it would be very tedious indeed to separate all of this out, and personally, I am unwilling to do so myself. In addition, there are other factors that might affect results as well. For example, some folks used heated bands, but others did not. For another example, some used full butterfly draw, but some did not. And for still another example, some were shooting in ambient temperatures much warmer than others.

 

Cheers .... Charles

 

I'm with Charles on this. The purpose of Speed Freaks and Power Rangers was to explore the limits of speed and power. To that end, the only limits on equipment are that the frame be held with one hand and the pouch drawn with the other. I'm satisfied, that for now, the limits are about 80-90 lb/ft and a bit over 500 fps. I don't look for anyone to exceed those numbers until we get some better rubber.



#304 busySteve

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Posted 23 May 2016 - 06:29 AM

Hi Folks!  This is my first Power Ranger submission.  I hope it earns me something...  I hope I did it right.

 

Slingshot: Natural Crepe Myrtle tree fork 

Bands: One Thera-band Gold band per side 1.125" to .75" taper 12 inches long 

Pouch: Pig skin about .050" thick

Ammo: 54 cal lead ball .530" by Hornady - 14.45 grams / 223 grains

Calculated Energy Minimum :   26.849 joules (fpe)

 

 

Sorry Folks,

 

I failed to mention that my draw length from the fork was 61".



#305 Charles

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Posted 23 May 2016 - 11:19 AM

Good job, BS!!! I have put in for your badge for 20 fpe, and I have entered your results in the forum table. Hope to be able to send more badges your way in the future.

 

Cheers ..... Charles



#306 busySteve

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Posted 23 May 2016 - 09:20 PM

Good job, BS!!! I have put in for your badge for 20 fpe, and I have entered your results in the forum table. Hope to be able to send more badges your way in the future.

 

Cheers ..... Charles

 

Sorry Charles, it should be taken back.... I just learned that FPE and Joules are not the same, I thought they were.  I just missed it, but I still missed it.  I will earn the badge honestly.


Edited by busySteve, 23 May 2016 - 09:21 PM.


#307 Charles

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Posted 23 May 2016 - 11:31 PM

 

Good job, BS!!! I have put in for your badge for 20 fpe, and I have entered your results in the forum table. Hope to be able to send more badges your way in the future.

 

Cheers ..... Charles

 

Sorry Charles, it should be taken back.... I just learned that FPE and Joules are not the same, I thought they were.  I just missed it, but I still missed it.  I will earn the badge honestly.

 

 

Nope ... you earned it honestly. That weight of ammo at that speed comes in at just over 20 fpe. Of course I encourage you to up your score. Personally, I tried this a lot of times with a variety of setups, and was gradually able to do better and better. In my case, I liked the challenge of doing it with office rubber bands.

 

By the way, here is the on-line calculator that I use for fpe:

 

http://www.pyramydai...y_August_2003/5

 

Cheers .... Charles



#308 busySteve

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Posted 23 May 2016 - 11:39 PM

 

 

Good job, BS!!! I have put in for your badge for 20 fpe, and I have entered your results in the forum table. Hope to be able to send more badges your way in the future.

 

Cheers ..... Charles

 

Sorry Charles, it should be taken back.... I just learned that FPE and Joules are not the same, I thought they were.  I just missed it, but I still missed it.  I will earn the badge honestly.

 

 

Nope ... you earned it honestly. That weight of ammo at that speed comes in at just over 20 fpe. Of course I encourage you to up your score. Personally, I tried this a lot of times with a variety of setups, and was gradually able to do better and better. In my case, I liked the challenge of doing it with office rubber bands.

 

By the way, here is the on-line calculator that I use for fpe:

 

http://www.pyramydai...y_August_2003/5

 

Cheers .... Charles

 

 

Thank you Charles.  I was under the impression that the lowest measurement was the one used.  I guess I was wrong about that.



#309 Charles

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Posted 24 May 2016 - 10:39 AM

 

 

 

Good job, BS!!! I have put in for your badge for 20 fpe, and I have entered your results in the forum table. Hope to be able to send more badges your way in the future.

 

Cheers ..... Charles

 

Sorry Charles, it should be taken back.... I just learned that FPE and Joules are not the same, I thought they were.  I just missed it, but I still missed it.  I will earn the badge honestly.

 

 

Nope ... you earned it honestly. That weight of ammo at that speed comes in at just over 20 fpe. Of course I encourage you to up your score. Personally, I tried this a lot of times with a variety of setups, and was gradually able to do better and better. In my case, I liked the challenge of doing it with office rubber bands.

 

By the way, here is the on-line calculator that I use for fpe:

 

http://www.pyramydai...y_August_2003/5

 

Cheers .... Charles

 

 

Thank you Charles.  I was under the impression that the lowest measurement was the one used.  I guess I was wrong about that.

 

 

Nahhhh ... we want to give you the best possible score on this one. The requirement is that it must not be a "one-off". You have to do a couple within 10% of each other. The calculation is based on your highest velocity.

 

Cheers .... Charles



#310 busySteve

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Posted 25 May 2016 - 05:18 PM

Submission for 25 fpe badge.

 

Mahogany Mangler
Slingshot: Hand Crafted Mahogany Fork (The Mahogany Mangler by your's truly)  :naughty: 

Bands: Four .010" latex bands per side 1" to .75" taper 12 inches long 

Pouch: Pig skin about .050" thick

Ammo: 5/8" steel ball - 16.4 grams / 253.0 grains

Measured Velocites (fps) : 205.9 / 211.1 / 207.4

Best Velocity : 211.1 fps

Calculated Energy Max :   25 fpe 

https://youtu.be/e_1xzE0Vxn0

 

Many Thanks!!!






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