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06-24-2008, 07:07 PM
| #1 |
| I wanna be Dave Join Date: May 2005 Location: CITY of CHAMPIONS!!
Posts: 2,086
|  figured out my steering issue!
Well i think i finally figured out my steering. Had zero issues all day at sundays comp. pretty close to the same setup that kamikaze is using, but a little different. i used 2 of the stock upper links. I used 1 stock rod end ball in both of the rod ends and used a washer on the outside by the stock screw head to keep the rod end from popping over the screw. I did not use any of the rubber o rings, the stock ball end fits the 2 rod ends pefectly allowing just enough slack to keep them from binding. I had to grind the inside rod end a bit to clear the servo arm which you can see in the pics. all in all i am very pleased with it. It is up high enough not to catch on anything and the steering is just about even with regards to inner and outer tire steer. with this config i have been able to turn the sharpest yet! and i can actually make it sharper if i wanted to because i have backed it off a bit to keep the pin engaged to the outer shaft at full lock. here are some pics!         Last edited by rockbound; 06-24-2008 at 07:55 PM. |
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06-25-2008, 10:26 AM
| #2 |
| RCC Addict Join Date: Jan 2006 Location: The Amish Ghetto
Posts: 1,932
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hey cj that looks good, i am not sure about setting it up like that though. i think that is going to put some big time load on the servo.... i am still working on my steering. i am trying to use the standard method just experimenting with different arms right now.  |
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06-25-2008, 10:28 AM
| #3 | |
| Rock Stacker Join Date: Mar 2008 Location: San Carlos
Posts: 77
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06-25-2008, 10:34 AM
| #4 | ||
| I wanna be Dave Join Date: May 2005 Location: CITY of CHAMPIONS!!
Posts: 2,086
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06-25-2008, 01:07 PM
| #5 |
| RCC Addict Join Date: Jan 2006 Location: The Amish Ghetto
Posts: 1,932
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i am running the same servo... but matt has me scared of the magic smoke now....  |
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06-25-2008, 01:46 PM
| #6 |
| I wanna be Dave Join Date: May 2006 Location: FOUR 8 OH
Posts: 4,913
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Jason smoked a servo doing it the same way.
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06-25-2008, 03:56 PM
| #7 | |
| I wanna be Dave Join Date: May 2005 Location: CITY of CHAMPIONS!!
Posts: 2,086
| Quote:
i kept checking it throughout the day and it never got hot. busted can make anything go up in smoke!! | |
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06-25-2008, 04:05 PM
| #8 | |
| R.I.P. Chip   Join Date: Jan 2004 Location: The Crawler State
Posts: 13,938
| Quote:
Changed it to a normal draglink/tie rod setup and it's fine. | |
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06-25-2008, 07:33 PM
| #9 | |
| I wanna be Dave Join Date: May 2005 Location: CITY of CHAMPIONS!!
Posts: 2,086
| Quote:
 Quick question, are you sure that you had no binding anywhere? I can turn mine lock to lock and still grab the links and easily twist them by hand at any point in their travels. Did you check if yours did that? just curious cause i obviously do not want to smoke any servos. | |
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06-25-2008, 07:44 PM
| #10 |
| R.I.P. Chip Join Date: Jan 2004 Location: The Crawler State
Posts: 13,938
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Yep as far as I could tell everything was free to move. Just check the servo every few minutes, if it isn't getting hot you should be good to go. Mine got smoking hot. |
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06-25-2008, 07:49 PM
| #11 |
| RCC Addict Join Date: Aug 2005 Location: VARCOR
Posts: 1,826
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Chargerguy also experienced a hot servo condition while running a dual-arm setup, and changed back to a tierod setup because of it. Both '04 Rubicon and myself have been running a dual arm setup recently (mine on OCM, his on Axial), and haven't had any overheating issues. I hope someone figures out why this is happening to some and not others!! I would like to know what to do to prevent a problem in the future. |
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06-25-2008, 07:52 PM
| #12 | |
| I wanna be Dave  Join Date: Dec 2005 Location: Happiness is a warm AK.
Posts: 12,563
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Can't afford to replace $100.00+ servos very often. | |
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06-25-2008, 08:08 PM
| #13 |
| Moderator  Join Date: Apr 2004 Location: In my head
Posts: 2,744
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Assuming neither are binding I don't understand how the two link set-up puts more stress on the servo. Not saying that it doesn't but I don't understand it, both set-ups are turning two wheels??? Not saying that it wasn't Jason's problem swaping it and then not having the problem says alot, but I know Kamikaze has be running this set-up without any problems????
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06-25-2008, 08:19 PM
| #14 |
| RCC Addict Join Date: Jan 2006 Location: The Amish Ghetto
Posts: 1,932
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i beleive it due to ther servos travel.... a servo swings in an arc not a linear motion.. so that means its not only loaded laterally its being loaded when it tries to raise the linkage as it swings it horizontally. does that sound right to anyone else? |
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06-26-2008, 05:17 AM
| #15 |
| Pebble Pounder Join Date: Apr 2008 Location: Indiana
Posts: 145
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Ben thinking this one over...not saying I have the answer.  It might have to do with the fact that when using a drag link the servo is either pushing or pulling. With two links the servo is doing both simultaneous and while the total work may be similar it still is creating opposition to direction of travel. Picture pushing a 300lb object doable but will require a firm foundation Now picture pushing a 150lb object while another 150lbs is dangling over a ledge tied to your back....that sounds a little harder. Not saying it is not possible put those of us running 200oz servos may have a harder time than those of you running 325+oz servos. And this scenario would also be compounded by how much weight is involved. Last edited by Miller Tyme; 06-26-2008 at 05:22 AM. |
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06-27-2008, 03:23 PM
| #16 | |
| Rock Crawler  Join Date: Jun 2007 Location: Hopewell
Posts: 663
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Linear Mode
