{"id":67912,"date":"2022-03-01T18:18:52","date_gmt":"2022-03-01T22:18:52","guid":{"rendered":"https:\/\/seniordesign.digitalscholar.rochester.edu\/spring2022\/uncategorized\/cart1\/"},"modified":"2024-03-04T15:46:45","modified_gmt":"2024-03-04T19:46:45","slug":"cart1","status":"publish","type":"post","link":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/cart1\/","title":{"rendered":"Drill-Powered Cart"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-11.46.17-PM.png\" alt=\"\" class=\"wp-image-102922\" width=\"641\" height=\"643\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-11.46.17-PM.png 715w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-11.46.17-PM-300x300.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-11.46.17-PM-150x150.png 150w\" sizes=\"auto, (max-width: 641px) 100vw, 641px\" \/><figcaption>Team 1: Michael Harnish, Ethan Peltier, Dung Nguyen, Abdelrahman Musa Nahar<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Mentors<\/h2>\n\n\n\n<p>Christopher Muir, Chris Pratt, Mike Pomerantz, Jim Alkins<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Project Description<\/h2>\n\n\n\n<p class=\"has-text-align-left\"><em>Gas-powered automobiles negatively impact the earth because of pollution that is exhausted from their engines. This project implements a cheap, efficient, and electric-powered cart design to raise awareness on the power of efficient electric vehicles.&nbsp;The cart is divided into four subsystems: drivetrain, brakes, frame, and steering. Each sub-system is designed based on various NX simulations and engineering principles and constrained to a set of requirements and specifications to be as efficient as possible.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Requirements and Specifications<\/h2>\n\n\n\n<div class=\"wp-block-coblocks-accordion\">\n<div class=\"wp-block-coblocks-accordion-item\"><details><summary class=\"wp-block-coblocks-accordion-item__title\">Requirements<\/summary><div class=\"wp-block-coblocks-accordion-item__content\">\n<p>The cart must drive with the power of a hand-drill for the entirety of the race<br>The cart must possess, at a minimum, 3 wheels<br>The cart must clear the ramp near Meliora without interference <br>The cart must have safety features (i.e. seatbelt and bell)<br>The cart must sustain its own weight and the weight of the driver<\/p>\n<\/div><\/details><\/div>\n\n\n\n<div class=\"wp-block-coblocks-accordion-item\"><details><summary class=\"wp-block-coblocks-accordion-item__title\">Specifications<\/summary><div class=\"wp-block-coblocks-accordion-item__content\">\n<p>The maximum speed of the cart must not exceed 25 mph<br>The maximum turn radius of the cart must be 11 ft.<br>The maximum brake distance of the cart must be 15 ft.<br>The cart must supports its own weight plus an additional 210 lbs.<br>The cart must have 6&#8243; of clearance under the frame from the point of maximum deflection to the ground<\/p>\n<\/div><\/details><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Concept Selection<\/h2>\n\n\n\n<p>The skeleton of the cart\u2019s frame is made of a base plank of Baltic&nbsp;Birch plywood. It is a&nbsp;single piece of wood for lightweight efficiency. Supports were added under the frame&nbsp;in the front and on top in the back to decrease deflection. The topology of the base&nbsp;frame was optimized, and it has side mounts that extend out for the tires. There is a&nbsp;support at the front of the cart for the steering column and steering wheel, as well as&nbsp;a built-in seat.\u200b<\/p>\n\n\n\n<div class=\"wp-block-coblocks-gallery-stacked\"><ul class=\"coblocks-gallery has-no-alignment has-fullwidth-images has-custom-gutter\" style=\"--coblocks-custom-gutter:0em\"><li class=\"coblocks-gallery--item\"><figure class=\"coblocks-gallery--figure\"><img loading=\"lazy\" decoding=\"async\" width=\"375\" height=\"381\" alt=\"\" class=\"wp-image-98542 has-shadow-none\" data-id=\"98542\" data-imglink=\"\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-4.54.58-PM.png\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-4.54.58-PM.png 375w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-4.54.58-PM-295x300.png 295w\" sizes=\"auto, (max-width: 375px) 100vw, 375px\" \/><\/figure><\/li><li class=\"coblocks-gallery--item\"><figure class=\"coblocks-gallery--figure\"><img loading=\"lazy\" decoding=\"async\" width=\"880\" height=\"288\" alt=\"\" class=\"wp-image-103152 has-shadow-none\" data-id=\"103152\" data-imglink=\"\" data-link=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/cart1\/screen-shot-2022-04-29-at-12-07-02-am\/\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.07.02-AM.png\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.07.02-AM.png 880w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.07.02-AM-300x98.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.07.02-AM-768x251.png 768w\" sizes=\"auto, (max-width: 880px) 100vw, 880px\" \/><\/figure><\/li><\/ul><\/div>\n\n\n\n<p>The drivetrain is rear-wheel drive.&nbsp;The main criteria considered for the design are&nbsp;handling, efficiency, ease of manufacturing, size of the drive train, and finally&nbsp;practicality of the design.&nbsp;The drill will be placed in the rear of the car and a&nbsp;sprocket\/chain assembly will be used to transfer the power from the drill to the rear&nbsp;axle and ultimately the rear wheels.\u200b<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"997\" height=\"541\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-4.57.51-PM.png\" alt=\"\" class=\"wp-image-98572\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-4.57.51-PM.png 997w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-4.57.51-PM-300x163.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-4.57.51-PM-768x417.png 768w\" sizes=\"auto, (max-width: 997px) 100vw, 997px\" \/><\/figure>\n\n\n\n<p>The chosen concept for the steering system uses an Ackermann steering\u202f.&nbsp;Ackermann&nbsp;steering reduces wheel slipping. The steering wheel is attached to a steering column,&nbsp;and the column is attached to a plate with two holes on the top. Two steering tie-rods&nbsp;extend outward from the steering plate and attach to the plate with ball joints. The&nbsp;opposite ends of the steering tie-rods are attached to a steering pivot plate, which&nbsp;points towards the center point of the back axle to enforce Ackermann steering.\u200b<\/p>\n\n\n\n<div class=\"wp-block-coblocks-gallery-stacked\"><ul class=\"coblocks-gallery has-no-alignment has-fullwidth-images has-custom-gutter\" style=\"--coblocks-custom-gutter:0.2em\"><li class=\"coblocks-gallery--item\"><figure class=\"coblocks-gallery--figure\"><img loading=\"lazy\" decoding=\"async\" width=\"379\" height=\"402\" alt=\"Image gallery image\" class=\"wp-image-98552 has-shadow-none\" data-id=\"98552\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-4.56.09-PM.png\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-4.56.09-PM.png 379w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-4.56.09-PM-283x300.png 283w\" sizes=\"auto, (max-width: 379px) 100vw, 379px\" \/><\/figure><\/li><li class=\"coblocks-gallery--item\"><figure class=\"coblocks-gallery--figure\"><img loading=\"lazy\" decoding=\"async\" width=\"509\" height=\"480\" alt=\"\" class=\"wp-image-102972 has-shadow-none\" data-id=\"102972\" data-imglink=\"\" data-link=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/cart1\/screen-shot-2022-04-28-at-11-50-03-pm\/\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/03\/Screen-Shot-2022-04-28-at-11.50.03-PM.png\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/03\/Screen-Shot-2022-04-28-at-11.50.03-PM.png 509w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/03\/Screen-Shot-2022-04-28-at-11.50.03-PM-300x283.png 300w\" sizes=\"auto, (max-width: 509px) 100vw, 509px\" \/><\/figure><\/li><\/ul><\/div>\n\n\n\n<p>Regarding braking, the selection criteria were complexity of design, manufacturability,&nbsp;thermal efficiency, ease of assembly, and cost efficiency. These most important&nbsp;factors to consider for this sub-system.\u202fHydraulic disc brakes met&nbsp;all the criteria and&nbsp;provided the necessary braking power to meet our requirements.\u200b<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"999\" height=\"551\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-4.58.22-PM.png\" alt=\"\" class=\"wp-image-98582\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-4.58.22-PM.png 999w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-4.58.22-PM-300x165.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-4.58.22-PM-768x424.png 768w\" sizes=\"auto, (max-width: 999px) 100vw, 999px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">CAD Drawing Package<\/h2>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/05\/full_drawingPackage.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Embed of Embed of full_drawingPackage..\"><\/object><a id=\"wp-block-file--media-7299f24e-75e9-4786-b624-266e6bdcab3c\" href=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/05\/full_drawingPackage.pdf\">full_drawingPackage<\/a><a href=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/05\/full_drawingPackage.pdf\" class=\"wp-block-file__button\" download aria-describedby=\"wp-block-file--media-7299f24e-75e9-4786-b624-266e6bdcab3c\">Download<\/a><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Mechanical Analysis<\/h2>\n\n\n\n<p><strong>NX Stress Analysis:<\/strong> One of the design considerations was regarding the mounting plates that were used to mount the wheels onto the rear axle. For this part, it was necessary to understand which orientation was best for broaching the central 5\/8\u201d hole to fit the key that would lock it in place. The options were to key it vertically or horizontally; the team wanted to see which orientation would result in the least amount of stress transmitted to the plate. A 1 lbf\/in torque was placed in the center and two other holes were fixed before running a Solution 101 Statics analysis on the plate to see the resultant stresses. The results showed a maximum stress of 12.12 psi for the vertical orientation while the horizontal one showed a maximum stress of 19.19 psi. Although the vertical orientation had less stress, we realized that the orientation would not matter since the yield stress of aluminum is 40,000 psi and therefore the stresses in either orientation would be negligible.<\/p>\n\n\n\n<div aria-label=\"Carousel Gallery\" class=\"wp-block-coblocks-gallery-carousel\"><div class=\"coblocks-gallery-carousel-swiper-container is-cropped coblocks-gallery has-no-alignment has-caption-style-dark has-horizontal-gutter has-no-thumbnails\"><div class=\"has-carousel has-carousel-lrg swiper-container\" data-swiper=\"{&quot;alignCells&quot;:false,&quot;autoPlay&quot;:false,&quot;autoPlaySpeed&quot;:3000,&quot;draggable&quot;:true,&quot;freeScroll&quot;:false,&quot;loop&quot;:false,&quot;navigation&quot;:true,&quot;pageDots&quot;:false,&quot;pauseHover&quot;:false,&quot;responsiveHeight&quot;:false,&quot;slidesPerView&quot;:2,&quot;thumbnails&quot;:false,&quot;uuid&quot;:&quot;12345&quot;}\" id=\"12345\" style=\"height:400px\"><div class=\"swiper-wrapper\"><div class=\"swiper-slide\"><div class=\"coblocks-gallery--item\" role=\"button\" tabindex=\"0\"><figure class=\"coblocks-gallery--figure has-margin-left-5 has-margin-left-mobile-5 has-margin-right-5 has-margin-right-mobile-5\"><img loading=\"lazy\" decoding=\"async\" width=\"340\" height=\"368\" alt=\"\" class=\"wp-image-103122\" data-id=\"103122\" data-link=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/cart1\/screen-shot-2022-04-28-at-11-56-38-pm-1\/\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-11.56.38-PM-1.png\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-11.56.38-PM-1.png 340w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-11.56.38-PM-1-277x300.png 277w\" sizes=\"auto, (max-width: 340px) 100vw, 340px\" \/><\/figure><figcaption class=\"coblocks-gallery--caption coblocks-gallery--primary-caption\"><\/figcaption><\/div><\/div><div class=\"swiper-slide\"><div class=\"coblocks-gallery--item\" role=\"button\" tabindex=\"1\"><figure class=\"coblocks-gallery--figure has-margin-left-5 has-margin-left-mobile-5 has-margin-right-5 has-margin-right-mobile-5\"><img loading=\"lazy\" decoding=\"async\" width=\"336\" height=\"360\" alt=\"\" class=\"wp-image-103132\" data-id=\"103132\" data-link=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/cart1\/screen-shot-2022-04-28-at-11-56-55-pm\/\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-11.56.55-PM.png\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-11.56.55-PM.png 336w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-11.56.55-PM-280x300.png 280w\" sizes=\"auto, (max-width: 336px) 100vw, 336px\" \/><\/figure><figcaption class=\"coblocks-gallery--caption coblocks-gallery--primary-caption\"><\/figcaption><\/div><\/div><\/div><button class=\"nav-button__prev\" id=\"12345-prev\"><svg class=\"icon\" style=\"transform:rotate(180deg)\"><\/svg><\/button><button class=\"nav-button__next\" id=\"12345-next\"><svg class=\"icon\"><\/svg><\/button><\/div><\/div><\/div>\n\n\n\n<p><strong>Dynamics Analysis:<\/strong> The purpose of this design project was to convert the torque from on hand drill to torque that will drive the cart and its passenger forward. For this, a dynamic analysis was done on the cart. The baseline equation for the analysis is,<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-28-at-4.49.03-PM.png\" alt=\"\" class=\"wp-image-98482\" width=\"407\" height=\"32\"\/><\/figure>\n\n\n\n<p>where T<sub>applied<\/sub>&nbsp;is the torque applied to the rear axle, W<sub>cart<\/sub>&nbsp;is the weight of the cart,&nbsp;<sub>s<\/sub>&nbsp;is the coefficient of static friction between the tires and the road, \u201cr\u201d is the radius of the rear tires, I is the moment of inertia of the tires and the rear axle, and \u03b1 is the angular acceleration. This equation was&nbsp;used&nbsp;to find the necessary torque necessary to achieve an agreed upon acceleration. The equation had a numerical answer; however, after testing the drills, it was determined that this number was not valid because the torque output of the drill changed as the speed of the drill increased.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Manufacturing<\/h2>\n\n\n\n<p><strong>Frame:<\/strong>&nbsp;The frame consists of three parts: base frame, steering column support, and&nbsp;driver seat. All these components were manufactured using 1\/2\u201d Baltic birch plywood in&nbsp;the&nbsp;ShopBot&nbsp;CNC machine. This machine is quicker than using a traditional bandsaw, and&nbsp;it allows for irregular shapes\/curvatures to be cut. A spot drill and a 1\/2\u201d drill (with a&nbsp;16000-rpm spindle speed and 100&nbsp;ipm&nbsp;feed rate) were used. The band saw was used for&nbsp;touch-ups and small pieces.\u200b<\/p>\n\n\n\n<p><strong>Drivetrain:<\/strong>&nbsp;For the drivetrain, the keyed shaft used for the rear axle is made from 1045&nbsp;Carbon Steel because of its strength and manufacturability. The mounting plate for the&nbsp;sprockets and for the tires were machined from aluminum using the mill. The aluminum&nbsp;connecting rods to the tires from the mounting plates were machined on the lathe and&nbsp;threaded.\u200b<\/p>\n\n\n\n<p><strong>Steering:<\/strong>&nbsp;For the steering system, all components were made from various steels&nbsp;because of its strength and durability. The steering plate and two pivots were made&nbsp;using the plasma cutter. All three pieces are 1\/4\u201d thick, and they were cut using a 0.05\u201d&nbsp;drill at 70&nbsp;ipm. Holes were drilled in the pieces using the drill press. The steering rod was&nbsp;MIG welded to the steering plate, and the two rods were welded in the pivot sub-assemblies.&nbsp;\u200b<\/p>\n\n\n\n<p><strong>Brakes:<\/strong>&nbsp;The hydraulic braking system was attached using various fabricated mounts. The&nbsp;mill and band saw were utilized to manufacture the mount disc and the caliper mount.&nbsp;Welding was also used for the caliper mount.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"498\" height=\"667\" data-id=\"103282\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.14.29-AM.png\" alt=\"\" class=\"wp-image-103282\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.14.29-AM.png 498w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.14.29-AM-224x300.png 224w\" sizes=\"auto, (max-width: 498px) 100vw, 498px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"499\" height=\"568\" data-id=\"103292\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.14.39-AM.png\" alt=\"\" class=\"wp-image-103292\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.14.39-AM.png 499w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.14.39-AM-264x300.png 264w\" sizes=\"auto, (max-width: 499px) 100vw, 499px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"538\" height=\"603\" data-id=\"103302\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.14.19-AM.png\" alt=\"\" class=\"wp-image-103302\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.14.19-AM.png 538w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.14.19-AM-268x300.png 268w\" sizes=\"auto, (max-width: 538px) 100vw, 538px\" \/><\/figure>\n<\/figure>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"288\" height=\"246\" data-id=\"103232\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.09.45-AM-1.png\" alt=\"\" class=\"wp-image-103232\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"239\" height=\"313\" data-id=\"103242\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.09.51-AM-1.png\" alt=\"\" class=\"wp-image-103242\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.09.51-AM-1.png 239w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.09.51-AM-1-229x300.png 229w\" sizes=\"auto, (max-width: 239px) 100vw, 239px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"332\" height=\"249\" data-id=\"103252\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.09.38-AM-1.png\" alt=\"\" class=\"wp-image-103252\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.09.38-AM-1.png 332w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.09.38-AM-1-300x225.png 300w\" sizes=\"auto, (max-width: 332px) 100vw, 332px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"862\" height=\"614\" data-id=\"103222\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.10.13-AM.png\" alt=\"\" class=\"wp-image-103222\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.10.13-AM.png 862w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.10.13-AM-300x214.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Screen-Shot-2022-04-29-at-12.10.13-AM-768x547.png 768w\" sizes=\"auto, (max-width: 862px) 100vw, 862px\" \/><\/figure>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Testing<\/h2>\n\n\n\n<p>The maximum speed specification, which states that the cart must not exceed 25 mph, was tested using a speedometer. The maximum turning radius of the cart must be 11 ft, and this was tested by coating the front wheels in water and turning the steering wheel as far it can go and driving the cart in a circle (left or right). The radius of the circle was measured with a tape-measure. The maximum break distance of approximately 15 ft was measured by full-stopping the cart from its maximum speed. Marks were made both at the maximum speed and at the final position, and a tape measure was used to measure the distance between the marks. The strength of the frame, which must hold its own weight plus an additional weight of 210 lbs., was measured using an FEA of the frame. Lastly, the clearance under the cart, which must be greater than 6\u201d, was measured using a tape-measure from the ground to the point of maximum deflection in the frame while the driver is in position.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Results<\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><tbody><tr><td><strong>Specification Test<\/strong><\/td><td><strong>Results (PASS\/FAIL)<\/strong><\/td><\/tr><tr><td>Maximum speed &lt; 25 mph<\/td><td>PASS<\/td><\/tr><tr><td>Turn radius &lt; 11 ft<\/td><td>PASS<\/td><\/tr><tr><td>Maximum brake distance &lt; 15 ft.<\/td><td>PASS<\/td><\/tr><tr><td>Must support weight of driver<\/td><td>PASS<\/td><\/tr><tr><td>Clearance &gt; 0.5 ft.<\/td><td>PASS<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Recommendations For Future Work<\/h2>\n\n\n\n<p>If given the opportunity of time, a more in-depth NX simulation would be recommended. A simulation of each sub-system (brakes, steering etc.) as well as a full cart in motion simulation where the forces and stresses are examined would be recommended. Another recommendation is to include potential political turmoil as part of your CPM\u2019s unexpected events that may disrupt the supply chain of certain products and parts that are used in the manufacturing of the cart. Furthermore, a more advanced gearbox and lighter, more aerodynamic frame will also improve cart performance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Acknowledgements<\/h2>\n\n\n\n<p>Our\u00a0team\u00a0would\u00a0like\u00a0to\u00a0acknowledge Professor Muir for his constant support and help throughout the semester. A special thank you is also extended to Mike Pomerantz, Chris Pratt, and Jim Alkins for their insight and guidance.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gas-powered automobiles negatively impact the earth because of pollution that is exhausted from their engines. This project implements a cheap, efficient, and electric-powered cart design to raise awareness on the power of efficient electric vehicles.\u00a0<\/p>\n","protected":false},"author":6242,"featured_media":39,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[3046,126],"tags":[],"coauthors":[8612],"class_list":["post-67912","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-manufacturing-archive","category-me-archive"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Drill-Powered Cart - Senior Design Day<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/cart1\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Drill-Powered Cart - Senior Design Day\" \/>\n<meta property=\"og:description\" content=\"Gas-powered automobiles negatively impact the earth because of pollution that is exhausted from their engines. 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