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« on: May 20, 2012, 06:35:57 PM »
prabhu.rohit9
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i want miniature pneumatic or linear actuator
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« Reply #1 on: May 21, 2012, 12:05:39 AM »
roopeshkrishna
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Prabhu, it is easy to make an actuator yourself.. use a sliding servo, or convert a servo in to sliding.. big gears..  more arm travel..  Thumbs Up
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« Reply #2 on: May 21, 2012, 11:37:17 AM »
prabhu.rohit9
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how to do that roopeshkrishna how to do sliding servo Bang Head
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« Reply #3 on: May 21, 2012, 12:11:56 PM »
roopeshkrishna
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Prabhu, sliding servos are bit costlier.. but you can make it simple at home.. waht you need is one conter gear from DVD lens mechanism of lens drive.. (CCM), and its sliding rail with teeth.. so, can attach the gear to the servo arm gear, then the rail to the conter gear, with some foam board, or plastic reinforcement.. works nice.. bythis, the arm, travels in a reiprocating mode instead of rotation.. and also can make a dumping gear mechanism, by adding a big rond flange of your servo, by cutting it like a cam..  another mode of actuation is screw jack, that can make easily, with M3 screws and nuts in 3 inches length.. works perfectly.. another easiest method is to tip the carrier of dump truck is the cord and winder.. attach a cord, (radio dial cord, shuttle bat cord, etc..) at the bottom area of your carrier tray.. root it to chassis through some taperecorder pulleys, and attach a simple plastic gear box, and fix the tip of the cord to the shaft of the gear box.. apply a aslight slack in cord.. then apply battery.. can see the tray is actuating.. reverse the battery.. can see the tray coming down.. and you can also add a mock up cylinder just under the tray, with a ball point pen body, ( reworked for scale appearence), and cycle spoke.. this will be about 20 or 30 Rs cost.. works..? perfectly for years.. have some nice ideas.. and enjoy the coffee... with omlett..  Thumbs Up Salute
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« Reply #4 on: May 21, 2012, 12:16:40 PM »
roopeshkrishna
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give me a little time.. will add a build log that how to make a sliding servos.. and will make a good dump truck for you, from your inspiration.. will ship you, if you bear the courier charge.. will be in 1:10, or such scale, as the material with me..  Thumbs Up
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« Reply #5 on: May 21, 2012, 02:16:46 PM »
prabhu.rohit9
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tell me your price and i will take it from you Bow
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« Reply #6 on: May 21, 2012, 03:57:53 PM »
roopeshkrishna
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i need not any money for the craft.. as i can realize it by things around me, and paint by a little as balance.. but have to bear the courier charge.. and Prabhu, need a little time as i am promised to complete some models.. Thumbs Up
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« Reply #7 on: May 21, 2012, 04:34:09 PM »
prabhu.rohit9
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ya i have time and i can pay the courier charges and thanks for your help  Hats Off
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« Reply #8 on: May 21, 2012, 05:28:53 PM »
roopeshkrishna
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done.. Thumbs Up
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« Reply #9 on: June 06, 2012, 10:12:27 AM »
prabhu.rohit9
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roopesh sir any idea about when my model will complete Head Scratching
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