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#1 havlicek

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Posted 07 January 2017 - 11:17 AM

... your next stop... The Big Wire Zone.  :D

Shown here with it's "little brother" in the background, a #23 (!), or more precisely, a 15t/23 built on an identical stack, and coming in at .029 ohms.

IMG_1916_zpsje96lmet.jpg
 
We're well into "stoopid" territory here, and I like that. Doing these things presents some interesting challenges for the hobby-winder. I also take extra care welding, tying, and epoxying them for obvious reasons. Just on the comm connections, I used about twice as much silver as I normally would, and re-flowed each joint a second time for both physical strength as well as electrical soundness. Tensioning the wire is kind of funny, as I literally am pulling on the stuff and "leading" each turn by more than the length of a side so it all lays in there straight.  

If the #24 was sure to make for a "violent" motor, then this guy is going to be responsible for whatever comes after "violent."   :D

IMG_1917_zpsrztvxvus.jpg

IMG_1918_zpsq8fbzaa9.jpg
 
Neither this 15t/23 or the 19t/24 were done for a specific request. Sometimes I like to just do things because... well... because I'm funny like that.
 
-john
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#2 Eddie Fleming

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Posted 07 January 2017 - 01:08 PM

Next up two turns of coathanger!  :crazy:
 
Looks great, John.
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#3 Steve Deiters

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Posted 07 January 2017 - 01:17 PM

Mega smokin'!
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#4 Samiam

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Posted 07 January 2017 - 01:36 PM

Don't give him any ideas!


Sam Levitch
 
When the only tool you have is a hammer, everything is a nail.
Support your local raceway, or you won't have one.
Slot cars are quad-pods.
Support your "Local Racer."
:laugh2:

#5 havlicek

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Posted 07 January 2017 - 01:48 PM

Thanks for looking in, guys.  

There's a huge difference between #23 and #24 wire. Unless someone requested a #22, I wouldn't bother and "even" a #23 wire arm is a rare beast. I clearly remember doing a fair number of large gauge arms back before I even had the ability to braze the comm connections. :D  

I knew the arms would self-destruct, but I had to learn about winding, and there is no other way than to go ahead and "just do it." Certainly, any number of limiting factors can come into play with these things, and even available track power is one of those.

Then again... people will run super-fast motors and then choke them down, which seems kind of odd, but I'm sure there are good reasons for that. Not being a racer, there's a lot I don't know about this stuff.
 
-john
John Havlicek

#6 zipper

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Posted 07 January 2017 - 02:31 PM

Did a #23 once and it was a PITA to wind, especially the third pole. Never used it anywhere, probably it might have burnt or blown in seconds...
Pekka Sippola

#7 Samiam

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Posted 07 January 2017 - 07:45 PM

Would this "Stoopid" arm live comfortably in a Mura Green can with Red Dots, Elephant Ears, and a set of buss bars?

If so, I call dibs. :dance3:
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Sam Levitch
 
When the only tool you have is a hammer, everything is a nail.
Support your local raceway, or you won't have one.
Slot cars are quad-pods.
Support your "Local Racer."
:laugh2:

#8 havlicek

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Posted 07 January 2017 - 08:09 PM

Hi Sam,
 
It's usually not a big deal to put new C-can arms in old ones and even vice versa, especially if the magnets can be slid around still and haven't been epoxied-in. These two evaporated PDQ though. I guess I should stray into The Bigwire Zone more often. ;)
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John Havlicek

#9 Samiam

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Posted 07 January 2017 - 08:38 PM

I already have one of the H-20 arms you built me in a Green can. It has only seen power supply duty but sounds and feels like it will reach "Stoopid Speed." One of these arms would easily do "Ludicrous Speed."


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Sam Levitch
 
When the only tool you have is a hammer, everything is a nail.
Support your local raceway, or you won't have one.
Slot cars are quad-pods.
Support your "Local Racer."
:laugh2:

#10 Taylor Davis

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Posted 09 January 2017 - 12:02 AM

Don't even see 23 in open qualifying, usually see 24ga.

 

Also was 15t all that would fit on the 23ga?



#11 zipper

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Posted 09 January 2017 - 06:01 AM

I had a couple of 15t/23 arms for qualifying ten years ago. The first one did one lap before comm swelling and thereafter it never ran a lap well. The other one didn't last even a lap. I think 15 is the max to fit.


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#12 havlicek

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Posted 09 January 2017 - 07:36 AM

Also was 15t all that would fit on the 23ga?

 
Nah, with a typical modern lam, it would be a cinch to fit more than 15 turns. 15t/23 is just an "average" wind for #23 wire.
 
-john
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John Havlicek

#13 Taylor Davis

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Posted 09 January 2017 - 08:12 AM

Does anyone make a 23-1/2ga? I know there is a 24-1/2 ga. May make a good qualifying arm, if you could get another turn on it.
 



#14 Bill from NH

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Posted 09 January 2017 - 12:43 PM

Taylor, Planet Engineers sells 23.5 ga. magnet wire.


Bill Fernald

 

I for I, like roman numerals.


#15 havlicek

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Posted 09 January 2017 - 04:02 PM

Does anyone make a 23-1/2ga? I know there is a 24-1/2 ga. May make a good qualifying arm, if you could get another turn on it.

 
It probably wouldn't be tough to get 17 or even 18 turns on there.
 
-john


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#16 Taylor Davis

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Posted 09 January 2017 - 04:08 PM

Sorry, I wasn't clear... I was thinking 16t of 23.5 ga.



#17 havlicek

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Posted 10 January 2017 - 06:41 AM

No matter, that would be even a bit easier.


John Havlicek

#18 tonyp

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Posted 10 January 2017 - 09:53 AM

Back in the day when I ran for Steube, Bill wound me a 23 which was killer. I won a couple of big East Coast races with it.

Problem was he never could get another to run like that one. I cried when the comm could not be cut any more.
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"And if my thought-dreams could be seen they'd probably put my head in a guillotine. But it's alright, Ma, it's life, and life only." - Dylan

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#19 havlicek

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Posted 11 January 2017 - 08:38 AM

Hi Tony,
 
Do you remember anything about the arm specs? Stack length, turns, comm advance? It would be a simple matter for me to "overwind" a #23, say to maybe even 19 or 20 turns, but just putting "too much" wire on an arm (adding resistance) doesn't always do anything good.
 
-john
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#20 tonyp

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Posted 11 January 2017 - 08:47 AM

All I remember is the wire was a black or real dark brown wire, unlike any of my other arms.
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"And if my thought-dreams could be seen they'd probably put my head in a guillotine. But it's alright, Ma, it's life, and life only." - Dylan

1965 "Evil Bucks Racer" Team
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American King track single lap world record holder & 40 minute total lap record
First IM Nationals Champion
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#21 havlicek

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Posted 11 January 2017 - 03:34 PM

Hi Tony,

Bummer, but thanks anyway! I may do me up a Trinity C-can motor with some "extra" #23 wire on there, keep the timing low and see what pops... er... so to speak!   :D
 
-john
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