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I'm working on the 7R "two-step"


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#1 havlicek

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Posted 24 January 2018 - 04:25 PM

...and I think I'll have it taken care of:

IMG_2451.JPG

:D


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#2 swodem

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Posted 24 January 2018 - 04:27 PM

You will have some considerable adjustment of the comm timing to do....


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#3 havlicek

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Posted 24 January 2018 - 04:28 PM

You will have some considerable adjustment of the comm timing to do....


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wellp...since there's no com in there, that should be EZ!


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#4 John Gorski

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Posted 24 January 2018 - 09:48 PM

Better change the can name...Made in USA...Double RR! Retro Eagle!


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#5 havlicek

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Posted 24 January 2018 - 10:16 PM

Better change the can name...Made in USA...Double RR! Retro Eagle!

 

Well, I got a grinder and know how to use it John ;)


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#6 Eddie Fleming

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Posted 24 January 2018 - 11:09 PM

Has this one got a home?


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#7 olescratch

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Posted 25 January 2018 - 03:52 PM

I agree, you gotta get rid of the etched writings on this can.  Definitely an "H" creation made in the USA! 


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#8 Brinkley47

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Posted 25 January 2018 - 04:47 PM

Awesome!
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#9 Eddie Fleming

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Posted 25 January 2018 - 04:56 PM

I am thinking you may have the two step thing beat.

 

Now can we get Noose to pass it? It is marked 7R. :D


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#10 havlicek

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Posted 25 January 2018 - 07:44 PM

Thanks guys.

 

 

I am thinking you may have the two step thing beat.

 

Now can we get Noose to pass it? It is marked 7R. :D


Well, I took the advice and got rid of the Made in China and 7R.  Now it says 7H and USA  ;)  Anyhow, the arm is in the oven speed-curing the epoxy (arm is marked 7H too, as well as "HT" onnacounta I cranked-up the timing, as well as dropping the turns to 60/30 and installed a modern large com.  There's a bunch "more" in these little motors, but they don't need to be pushed into mini-open territory either (*although I know they can go there as well!).  The idea here is a "7R+"...the one piece can, the larger com, the higher timing (that goes along with the larger com) and slightly warmer wind...along with JK's already good end bell, magnets and can bushing (I milled the excess can material off the end also for a bit more clearance between the back end of the pinion and the can) *should* make for a nifty little powerplant!


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John Havlicek

#11 Brinkley47

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Posted 25 January 2018 - 07:57 PM

Thanks guys.

 
 

Well, I took the advice and got rid of the Made in China and 7R.  Now it says 7H and USA  ;)  Anyhow, the arm is in the oven speed-curing the epoxy (arm is marked 7H too, as well as "HT" onnacounta I cranked-up the timing, as well as dropping the turns to 60/30 and installed a modern large com.  There's a bunch "more" in these little motors, but they don't need to be pushed into mini-open territory either (*although I know they can go there as well!).  The idea here is a "7R+"...the one piece can, the larger com, the higher timing (that goes along with the larger com) and slightly warmer wind...along with JK's already good end bell, magnets and can bushing (I milled the excess can material off the end also for a bit more clearance between the back end of the pinion and the can) *should* make for a nifty little powerplant!

if nothing else, it will be unique...lol
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#12 Samiam

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Posted 25 January 2018 - 08:10 PM

 I cranked-up the timing, as well as dropping the turns to 60/30 

 

This will never get IRRA approval. :D 

 

But it's got mine. :good:  


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#13 Alchemist

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Posted 25 January 2018 - 11:25 PM

Hi John,

 

 

What in your creative mind will be in the making here?!

 

I know it'll be exciting and unique!

 

Ernie


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#14 havlicek

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Posted 26 January 2018 - 07:27 AM

This will never get IRRA approval. :D

 

But it's got mine. :good:  

 

 

:)  Well, the idea here is to flesh-out the basic platform (*generally referred to as "fk" type motors...including both the sealed "end cap" type and the can/end bell "minican" type).  There's a lot going on with these little motors...strong magnets, nice end bells and a compact package.  In this case, I used the poly-neo magnets, but I just as easily could have used the ceramics that fit these cans because they have plenty of strength for this...and signficantly warmer combinations too.  So...this is a big "what-if" project, but one that aims at the: "I wanna go fast, but not all THAT fast" crowd, and to come up with a real solid performer that would still be reliable and *could* be a budget-friendly motor if it were ever produced.  Leaving the can bushing (no bearing) and magnets, as well as not modifying the end bell in any way are both for that reason.  


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