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03-18-2010, 10:03 PM
| #241 | ||
| I wanna be Dave Join Date: Jan 2005 Location: Hueytown, Alabama
Posts: 6,777
|  Quote:
Quote:
 Normally, stand up brushes would be better (torque) because it drops the field quicker. Laydown brushes hold the field longer (RPM). If you used standup brushes on that motor, it would produce too much torque (maybe not even run  ) because the OD of the comm is so large. All this is my understanding anyway.   | ||
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03-18-2010, 10:03 PM
| #242 | |
| I wanna be Dave Join Date: Jan 2005 Location: Hueytown, Alabama
Posts: 6,777
| Quote:
Short answer yes. | |
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03-18-2010, 10:05 PM
| #243 |
| I wanna be Dave Join Date: Jan 2008 Location: Arat Alabama
Posts: 2,678
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^ that's what I said, short version. Mr wizard  |
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03-18-2010, 10:07 PM
| #244 |
| MODERATOR™   Join Date: Jul 2004 Location: Ohio
Posts: 18,928
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Triple dog dare me to try a different endbell with standup brushes on it?
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03-18-2010, 10:07 PM
| #245 | |
| I wanna be Dave Join Date: Jan 2005 Location: Hueytown, Alabama
Posts: 6,777
| Quote:
Like I said, I could be wrong. Just the way I am understanding it.
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03-18-2010, 10:09 PM
| #246 | |
| I wanna be Dave Join Date: Jan 2005 Location: Hueytown, Alabama
Posts: 6,777
| Quote:
I would like to see what it does.............I triple dog dare you! Honestly, I think it will run, probably just get hot because the voltage will be on the pole longer than normal. This is when you need a dyno.  | |
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03-18-2010, 10:11 PM
| #247 | |
| I wanna be Dave Join Date: Jan 2008 Location: Arat Alabama
Posts: 2,678
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03-19-2010, 05:31 AM
| #248 |
| RCC Addict Join Date: Nov 2006 Location: Lowell, Arkansas
Posts: 1,307
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I've put standups on motors that were originally equipped with laydowns, and had large comms. Worked great. As expected, it reduced the rpms and amp draw quite a bit.
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03-19-2010, 07:13 AM
| #249 |
| Custom Carbon Fiber  Join Date: Oct 2007 Location: Connecticut :(
Posts: 4,501
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it was like a flip flop back in the day with those big comm motors. they came out with laydown brushes, racers liked the power increase. then the amps got high the smaller the comm got and brushes wrapped around, motors heated up. Mike Reedy designs a bigger comm with laydown brushes, lessoned the brush wrap lowering amps. Tougher part was getting the power back while slinging some extra rotating mass. Offroad we use to just hang an extra tooth and were good. |
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03-19-2010, 11:39 AM
| #250 |
| MODERATOR™ Join Date: Jul 2004 Location: Ohio
Posts: 18,928
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I said to Tedrockz last night that I thought this was one of the better informational threads on RCC lately, well I think I did. If I didn't, I just did. I figured I'd throw in this link in case any of the readers haven't found it yet. http://www.hobbytalk.com/bbs1/forumdisplay.php?f=172 |
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03-20-2010, 02:55 PM
| #251 | |
| RCC Addict  Join Date: Jun 2005 Location: St. Albans
Posts: 1,441
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Serious ? though... anyone know where to find any large comm armatures by themselves? I have a ton of can setups and brush hoods out the yang, but cant find any arms by themselves... | |
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03-20-2010, 02:57 PM
| #252 | |
| I wanna be Dave Join Date: Jan 2005 Location: Hueytown, Alabama
Posts: 6,777
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Have fun with that one. Its hard to find anything brushed now unless its old motor lots. I have seen a few brushes and springs, but thats about it. | |
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03-20-2010, 10:53 PM
| #253 |
| I wanna be Dave Join Date: Apr 2007 Location: Arlington, Washington
Posts: 2,303
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Good luck finding any big comm arms unwound.... I bought reedy out of the kr arms...and the new 10mm arms have only been shipped with motors.... So there is not much out there. I will look this weekend and see what I may have.... I got plenty of brushes for every motor type.... Same with springs. Later EddieO |
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03-21-2010, 02:59 PM
| #254 |
| Rock Crawler Join Date: Apr 2009 Location: Pa
Posts: 563
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I'm running one of HH 35t Yoko motors and it has standup brushes and the 9mm comm. Works very well. I think I'm going to have to stock up on brushes, springs and etc, online retailers are dropping them from their line.
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03-21-2010, 03:07 PM
| #255 |
| RCC Addict Join Date: Jun 2005 Location: St. Albans
Posts: 1,441
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yup. I placed a fairly large brush order last nite myself.
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03-21-2010, 03:19 PM
| #256 |
| Rock Crawler Join Date: Apr 2009 Location: Pa
Posts: 563
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Where you getting your stuff from? Towers selection is sad now, 6 months ago it was a lot better.
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03-21-2010, 03:31 PM
| #257 | |
| dnf  Join Date: Sep 2009 Location: Under a big fkn rock.
Posts: 1,901
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I know where you can find the rhino style motor,but it is in low winds like 8t,9t. $60 each,but you can rewind em possibly. I think the winds are brazed instead of soldered. Last edited by rock hard; 03-21-2010 at 03:35 PM. | |
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03-21-2010, 04:48 PM
| #258 | |
| RCC Addict Join Date: Jun 2005 Location: St. Albans
Posts: 1,441
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03-21-2010, 05:40 PM
| #259 |
| I wanna be Dave Join Date: Apr 2007 Location: Arlington, Washington
Posts: 2,303
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You will never get a 8t turn from fantom unwound where you can really use the arm again.....like my arms, they use the REALLY good epoxy. The stuff is pretty much welded to the arm, so no really undoing it. I have enough brushes and springs to last a good 5 years......for pretty much all motors. The site will be back up soon.....so you will be able to order whatever you need. All the nifty tools you guys want too. Later EddieO |
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03-21-2010, 06:14 PM
| #260 | |
| RCC Addict Join Date: Jun 2005 Location: St. Albans
Posts: 1,441
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LinkBacks (?)
LinkBack to this Thread: http://www.rccrawler.com/forum/electronics/223989-cutting-motor-commutator-motor-tweaks.html | ||||
| Posted By | For | Type | Date | |
| Hiilimoottorin kunnostaminen | This thread | Refback | 10-04-2011 03:19 PM | |
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Linear Mode
