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11-04-2009, 04:30 PM
| #1 |
| Rock Stacker Join Date: Nov 2006 Location: Eugene
Posts: 69
|  how much torque
This question might need to be in the electronic section but i wanted bully guys to answer. Is a hitec 645mg servo with 170 oz.tq enough for a hellstrom bully with no weight in wheels. Or what is the best servo for these axles? Thanks for any info  |
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11-04-2009, 04:45 PM
| #2 |
| Rock Crawler Join Date: Mar 2008 Location: lodi
Posts: 952
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id go with one of the stronger servos the 645 had a hard time with my axial in some situations and that thing was under 6 pds add 1-2 pds easy and some high grip surfaces = broken 645 lol im loving my jr8711 servo
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11-04-2009, 04:58 PM
| #3 |
| Pebble Pounder Join Date: Sep 2005 Location: West Coast Canada
Posts: 177
| good metal geared servo I am happy with the Towerpro cheapie hi torques, and Blue Birds have been great, no issues with the Blue Birds at all, I run them in almost all my kits... Can get them cheap on ebay from dinball... That said i've been thinking of scoring one of these: http://www3.towerhobbies.com/cgi-bin...?&I=LXWCE6&P=7 468 oz in torque at 7.4v lol Last edited by dave56bug; 11-04-2009 at 05:18 PM. |
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11-04-2009, 05:28 PM
| #4 |
| Rock Crawler Join Date: May 2007 Location: Norwich
Posts: 920
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More Torque =  |
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11-04-2009, 05:34 PM
| #5 |
| Pebble Pounder Join Date: Sep 2008 Location: Carlsbad, SoCal
Posts: 118
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I'm running an old 645 in mine until I can afford a new 7950th. It works, but not well. Basically I can't turn without the truck moving either forward or backwards. |
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11-04-2009, 05:48 PM
| #6 |
| RCC Addict   Join Date: Jun 2006 Location: spotting for jeepsohigh
Posts: 1,154
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I run an DS8711 on 6v works great with 6-8 oz in the front tires
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11-04-2009, 05:53 PM
| #7 |
| Rock Stacker Join Date: Jul 2009 Location: san diego
Posts: 72
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645mg only has 133oz tq unless you have a bec, I have broke a hitec 5955tg, a 7955 tg on my bully im using a 7950th now it works well if you want to save some money there is someone selling abrand new jr9100, for under 100 shipped its worth it check out rctech.net |
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11-04-2009, 05:59 PM
| #8 |
| TEAM MODERATOR   Join Date: May 2004 Location: Tennessee
Posts: 10,855
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170-200 oz. used to be pretty good back in the day. If you want your steering to work good,more is better,but anything from about 350 oz and up would be my suggestion. A heavier truck like the Bully's will require a little stronger servo as well if you want to keep up with the lighter builds guys are running now. Control is everything in crawling. If you can't turn,you can't control your truck. |
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11-04-2009, 06:04 PM
| #9 |
| RCC Addict Join Date: Jan 2009 Location: Sebastopol CA
Posts: 1,525
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I would also suggest 350+oz my Futaba 9157 on my berg is 425oz. and sometimes that isn't enough. |
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11-04-2009, 06:20 PM
| #10 |
| I wanna be Dave Join Date: Jan 2006 Location: ...the burning end of the rope.
Posts: 5,013
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DS8711 all the way,,,cant beat the torque,,decent speed,,works well with cc bec @ 6vdc on 2S 1300 and 1350 mah
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11-05-2009, 03:05 AM
| #11 |
| RCC Addict Join Date: Jul 2008 Location: Sin City
Posts: 1,332
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I wouldnt run anything less than 300oz on V1 Bullys and 400oz on V2 Bullys just from the weight of the different axles with no weight in the wheels.
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11-05-2009, 05:36 PM
| #12 |
| Rock Stacker Join Date: Nov 2006 Location: Eugene
Posts: 69
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thanks for the info guys. I just put in an order for a ds8711.
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11-10-2009, 06:12 PM
| #13 |
| RCC Addict Join Date: Apr 2009 Location: Behind the wheel
Posts: 1,107
| 8711FTW!!!
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11-10-2009, 07:25 PM
| #14 |
| I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
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Futaba s9157. I wont even use a 645 on my MRC.... |
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11-10-2009, 08:14 PM
| #15 | |
| Rock Crawler  Join Date: Apr 2005 Location: Humble
Posts: 800
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LOL - Futaba Snob..... | |
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11-11-2009, 07:18 AM
| #16 |
| I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
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Hey, you gotta run what works!  |
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11-11-2009, 09:51 AM
| #17 |
| Rock Crawler Join Date: Sep 2008 Location: Oroville, CA
Posts: 838
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im happy with the hobbico cs170 333oz @ 6V and $89  |
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11-11-2009, 03:49 PM
| #18 |
| Pebble Pounder Join Date: Sep 2005 Location: West Coast Canada
Posts: 177
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Just ordered a S9157 too... Hey gotta match my new 3pm mx |
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11-11-2009, 11:25 PM
| #19 | |
| Quarry Creeper Join Date: May 2008 Location: looking for sponsors
Posts: 462
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Linear Mode
