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Checkered Flag in Hand
Posted 14 February 2014 - 08:19 PM
Awesome, related thread drift...
I believe either "to" or "from" would be correct in this instance...it is both 90 degrees to its original & 90 degrees from its original, especially if one inserts "at" prior to 90.
But, then again, language is my native tongue and I do as well as I can. 
Jim Honeycutt
"I don't think I'm ever more 'aware' than I am right after I hit my thumb with a hammer." - Jack Handey [Deep Thoughts]
Grand Champion Poster
Posted 14 February 2014 - 08:29 PM
You speak green?
Checkered Flag in Hand
Posted 14 February 2014 - 08:40 PM
hey gator,
If you could make both motors operate with the same brush system but with a 90 degree reset of the com, they would develop the same torque and horsepower curve when contact is at 90 degrees; however with the both brushes with the arms hinged at 1 point, they wear in a arc and change the 180 degree contact patch and depending on their original length could be plus or minus to their initial setting. That is where the Mabucci motor holds the timing points at 180 degrees opposed to each other even the Russkit 34 with adjustable timing maintained this 180 degree interface between the brushes.
Shakey George
Grand Champion Poster
Posted 14 February 2014 - 08:45 PM
Awesome, related thread drift...
I believe either "to" or "from" would be correct in this instance...it is both 90 degrees to its original & 90 degrees from its original, especially if one inserts "at" prior to 90.
But, then again, language is my native tongue and I do as well as I can.
Now I can see how "to" makes sense.
I was reading "to" as "going to" and wondered if Mabuchi 36D's somehow had a previous/original version with vertical brushes. LOL
Mike Swiss
Inventor of the Low CG guide flag 4/20/18
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990), eight G7 main appearances
Eight-time G7 King track single lap world record holder
17B West Ogden Ave., Westmont, IL 60559, (708) 203-8003, mikeswiss86@hotmail.com (also my PayPal address)
Note: Send all USPS packages and mail to: 692 Citadel Drive, Westmont, Illinois 60559
Grand Champion Poster
Posted 14 February 2014 - 08:45 PM
Hi George .. 
Let me see if I get it ... the 180 changes as the 'swing arm' type wear down.
Wow I just started think about all the happenings going on in a Fk motor starting with the brush radius being 90 deg. out... 
Checkered Flag in Hand
Posted 14 February 2014 - 08:49 PM
Hey ya all, In the sixties realtime, with pittman and ram motors by using 1 longer and 1 shorter brush arm the advance could be affected and if you were really cool the brush material could be changed.....hence the amount and type of conductor could be varied and it did wake up the American made train motors.
Shakey George
Checkered Flag in Hand
Posted 14 February 2014 - 08:53 PM
Gator ,
Yes, so the timing would constantly be changing from the intended 180 degrees opposed separation.
George
Checkered Flag in Hand
Posted 14 February 2014 - 08:57 PM
exactly! and if you look at the newbie model, it looks like the brush placement has been changed for timing purposes.
George
Grand Champion Poster
Posted 14 February 2014 - 09:02 PM
(Back) EMF = PO*
*planed obsolescence.
Checkered Flag in Hand
Posted 14 February 2014 - 09:05 PM
I think if you look at the diagrams, it is a illustration of the place differential of the brushes in initial contact placement.
Checkered Flag in Hand
Posted 14 February 2014 - 09:10 PM
Hey ya all,
My meds are ketching up with me and I need some sleep for the Retro Easttm event at OCR. Good Night and great blogging.
Shakey George
Grand Champion Poster
Posted 14 February 2014 - 09:12 PM
Best of luck and all have a safe trip.
I do get the Koford drawing now .. It's the relation to the center line that is wack.
