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 21 
 on: Today at 08:47:54 AM 
Started by Robert Storick - Last post by Derek Barry
And people say stunt is dying.  n1

Derek

 22 
 on: Today at 08:26:25 AM 
Started by Avaiojet - Last post by john e. holliday
Looking at latest pictures of the plane,  who would mistake I for a Ringmaster? Stir the pot

But, then Charles is having fun and that is the important thing. Hoff

 23 
 on: Today at 08:21:07 AM 
Started by John Cralley - Last post by john e. holliday
Too far for the old DOC also.   Brodaks did it for me this year.   Besides Melvin makes me fly when I don't want to.   He is meaner then me.

 24 
 on: Today at 08:20:43 AM 
Started by Robert Storick - Last post by Paul Taylor
Wow!
Must be doing something right.  Grin

 25 
 on: Today at 08:19:22 AM 
Started by Paul Taylor - Last post by Paul Taylor


 26 
 on: Today at 08:17:27 AM 
Started by Robert Storick - Last post by Robert Storick
Monthly Summary   New Topics     New Posts   New Members   Most Online   Page views
 August 2014                367         3964                  36              572             4152925

 Idea When I started this forum I would have never guessed to get this kind of traffic  Idea

 27 
 on: Today at 08:10:31 AM 
Started by Dennis Toth - Last post by John Rist
Tim,
Thanks for the response.

What I was looking at was a way to reduce battery weight by choosing a higher voltage pack with a smaller mah. If you look at what is currently used for large ships swing the 12 - 13" diameter props they run 5S1P 2700 mah packs or 4S1P 4000mah packs. The 5S packs are about 1 - 1.25 oz lighter than the 4S. They both would run the same rpm set point in the ESC
but the 5S pulls less current and thus the 2700 pack vs the 4000.

My point being could we push the voltage to 6S 22.2 V and say 2000 mah ish and save more weight (assuming you could find the a pack that did in fact weigh less then the 5S for the capacity needed to do the pattern) while running at the same rpm set point or does the motor have limits?

Best,       DennisT

I am no expert but what you say may work.  However I am quite sure that the same motor will not work in all cases.  You have to match the KV ratting of the motor to the number of cells in the pack.  I suspect in the end their isn't a lot of weight savings because the total weight of the battery = the available energy.  Doesn't matter if it is high voltage or high current.  The weight advantage of HV might be in smaller wire and smaller speed controller.  But as I say what do I know.

 28 
 on: Today at 07:55:54 AM 
Started by Dane Martin - Last post by Paul Smith
I have that engine/airplane combination.  Four ounces is a lot more fuel than I need.

 29 
 on: Today at 07:54:15 AM 
Started by Bootlegger - Last post by Fredvon4
Dan thanks for your posts on this subject

Many years ago I was one of the Army guys posting the colors at a NASCAR race. When that task was done we each were invited to "hang out" for the weekend with a driver. I was invited to Tony Stewart's pit and had an exceptional time meeting him and his crew. I was very successful as a NCO in the Army, a lot because I learned early how to read and understand people, making me real good at motivating them to be a team and get crap done.

Your take on Tony is spot on and I don't have any thing to add to your assessment and perspective on his "bad boy/hot head" history.

Many folks don't understand the level of pressure and adrenaline the NASCAR drivers (all professional competitors) manage each weekend. Tony Stewart is no more and no less intense as any of the other pro drivers were/are at some point in their careers

Grin, I have followed NASCAR for over forty years and seen a lot of the drivers "melt down" on occasion

 30 
 on: Today at 07:52:42 AM 
Started by John Craig - Last post by Paul Smith
You can saw off the end of the wrench and go again.  Maybe with a heat gun this time.

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