how to measure cylinder bore taper

Taper wear is not linear from top to bottom. In this case cylinder bore is .0075 to .008 inch larger than the radom piston I chose. In fact, it may be desirable for the purposes of process control to ignore the variations that would show up if one part were measured at its largest ID, the next part at its smallest, and the third one somewhere in between. They must be in excellent condition before piston installation. Math. Record that measurement, which should be somewhat smaller. Site language gps_fixed English . Subtract the small number from the larger to calculate the amount of taper in the cylinder. Cylinder bore taper B.) For example: This is where and how to measure each point of the cylinder. 3. You will be able to measure bore depths ranging from 0.7 inches up to 6 inches, just perfect for measuring your cylinder’s taper. Join us. Taper causes excessive piston ring movement as the piston travels up and down the cylinder. The above considers only simple ovality--essentially, a two-lobed condition. Take a measurement, and then rotate the part (or the plug, depending on the setup) through a full 180 degrees, noting the maximum and minimum readings on the dial. Write the measurement down. Because this point will show the difference in diameter of the cylinder with a standard diameter. 2. The 'correct' Way to Measure a Cylinder Bore and Measure Cylinder Using Piston Diameter: Hi All, Purpose of this Instructable is to hopefully teach how to measure a cylinder and piston, the correct place to measure a piston and why you find the largest possible diameter. Use the piston to push the ring down near the bottom of the cylinder, and measure the gap again. How to measure a cylinder using a dial bore gauge (measuring taper and out-of-round) Finally, the bore gauge will be used to measure the cylinder bore diameter. When a cylinder wall is new, it is perfectly round. To arrive at an accurate sense of each cylinder’s overall bore, you’ll be taking a total of 8 separate measurements—2 apiece at intervals of about 1 in (2.5 cm) down the length of the cylinder. 100% How-To Tutorials. Out of Round: An out of round cylinder is out of round when beyond specifications. Use a multiple-jet air plug to measure first near one end, and then near the other end of the bore, and simply note the difference, if any. input the cylinder bore gauge into the cylinder. A telescopic gauge can be used to measure a cylinder bore if what other measuring device is used to measure the telescopic gauge? A plug with two separate air circuits is connected to the air gage so that each circuit acts on opposite sides of the precision diaphragm. To measure ovality, you will want an air plug with two, and only two, jets, located 180 degrees apart. The cylinder's taper and out of round dictate whether a cylinder is acceptable or if the engine block needs to be bored. Back to Top of Page link to product table of contents link to what's "NEW" link to price list. If the bore is oval, you will see a difference in the readings. Taper - difference between the measurements of A1 B1 C1 and difference between the measurements of A2 B2 C2. D.) Any of these. 4.2 out of 5 stars 36. A few bores are slightly out of round and there seems to be quite a lot of taper on the bore. Taper is determined by measuring the bore ID near the top (but below the ring ridge) where wear is greatest, then measuring the bore ID near the bottom where wear is minimal. If process analysis has indicated a need to check for barrel shape or bellmouth, take a measurement in the middle as well. For example my measurements are: X1 - 66.39mm X2 - 66.45mm X3 - 66.46mm Y1 - 66.38mm Y2 - 66.48mm Y3 - 66.43mm Z1 - 66.47mm Z2 - 66.42mm Z3 - 66.46mm The reason you have measured the bore in 3 spots at 3 different angles is (a) to get the average bore size and (b) to find the cylinder taper. Then, shake this tool left and right while watching the dial dial indicator. How to measure it ? Measure for out of round and taper before reconditioning the cylinder walls. Small hole gauge. Take measurements at the top, and compare them to the measurements at the bottom. MarTest - Test Indicators and Touch Probes, MarStand - Indicator Stands, Comparator Stands, Run out Testing Instruments, Marameter - Indicating Measuring Instruments, Multimar - Universal Measuring Instruments, MarTool - Measuring and Inspection Equipment, MarGage - Standards, Gages and Gage Blocks, Millimar - Electrical Length Measuring Instruments and Multi-Gaging Metrology, Millimar - Indication and evaluation instruments, Digimar 817 CLM - Height measuring instrument, Digimar 816 CL - Height measuring instrument, Digimar 814 N / 814 G - Height measuring and scribing instrument, Digimar 814 SR - Height measuring and scribing instrument, MarVision - Optical Measuring Instruments, MarVision QM 300 - Video measuring microscope, MarSurf - Mobile Roughness Measuring Units, Pocketsurf IV - Mobile roughness measuring instrument, MarSurf PS 10 - Mobile roughness measuring instrument, MarSurf M 300 - Mobile roughness measuring instrument, MarSurf M 300 C - Mobile roughness measuring instrument, MarSurf M 400 - Mobile surface measuring instrument, MarSurf - PC-Based Roughness Measuring Units, MarSurf - Automatic Roughness and Contour Measuring Systems, Precimar - Gage Block and Dial Gage Testing Unit, Dial indicator testing machines, image processing, Precimar - Universal and High End Length Measuring Units, MarShaft - Optical and Tactile Shaft Measuring Units, MarOpto - Measuring Devices for Optics Industry, MarSolution - Measuring Devices based on Millimar, MarSolution - Vertical Measuring Devices based on Millimar Standard Elements, MarSolution - Horizontal Measuring Devices based on Millimar Standard Elements, MarSolution - Measuring Device with Swivel Holder based on Millimar Standard Elements, Starting points for metrology within Industry 4.0, Mahr Metering Systems Göttingen, Deutschland, MarChem - Metering Pumps for Chemical Applications, Rotary Stroke Bearings in Machine Building, MarCal 16 ER /16 EWR / 16 EWRi - Digital Caliper, MarCal 16 EWV / 18 EWR-V - Digital universal caliper, MarCal 18 EWR / 18 ESA - Digital workshop caliper, MarCal 30 EWRi / 30 EWR / 30 EWN - Digital depth gage, MarCal 16 EWR-X - Digital Caliper for special applications, IP 67, MarCal 16 EWR-AA - Digital Caliper for special applications, IP 67, Data interface, MarCal 16 EWR-AI - Digital Caliper for special applications, IP 67, Data interface, MarCal 16 EWR-AR - Digital Caliper for special applications, IP 67, MarCal 16 EWR-BA - Digital Caliper for special applications, IP 67, Data interface, MarCal 16 EWR-C - Digital Caliper for special applications, IP 67, Data interface, MarCal 16 EWR-H - Digital Caliper for special applications, IP 67, Data interface, MarCal 16 EWR-LI - Digital Caliper for special applications, IP 67, Data interface, MarCal 16 EWR-NA - Digital Caliper for special applications, IP 67, Data interface, MarCal 16 EWR-RW - Digital Caliper for special applications, IP 67, Data interface, MarCal 16 EWR-S - Digital Caliper for special applications, IP 67, Data interface, MarCal 16 EWR-SA - Digital Caliper for special applications, IP 67, Data interface, MarCal 16 EWR-SI - Digital Caliper for special applications, IP 67, Data interface, MarCal 16 EWR-SM - Digital Caliper for special applications, IP 67, Data interface, MarCal 18N / 18 DN / 18 NA - Workshop calipers, Vernier, MarCal 30 N / 30 NH / 30 ND - Depth Gages, Vernier, Micromar 40 F / 40 T / 40 TS - Micrometer with dial comparator, Micromar 44A / 44 EWR / 844 A - 3-point bore gages, MarTest - Test indicator, horizontal model, MarCator 1075 R / 1086 R / 1087 R / 1088 - Digital indicator, MarCator - Digital indicator, with tolerance display, MarCator - Digital indicators, simple version, MarCator - Digital indicator with combined analog and digital display, MarCator 803 / 805 / 810 - Mechanical dial indicators, MarCator - Dial indicator with limited measuring range, MarCator 803 A / 803 S / 805 A - Small dial indicators, MarCator - Mechanical dial indicators ANSI/AGD, MarCator - Dial indicator, ANSI/AGD Group 0, MarCator - Dial indicator ANSI/AGD Group 1, MarCator - Dial indicator ANSI/AGD Group 2, MarCator - Dial indicator ANSI/AGD Group 3, MarCator - Dial indicator ANSI/AGD Group 4, MarCator - Dial indicators with limited measuring range, Millimess - Mechanical dial comparator, µm, Millimess - Mechanical dial comparator, mm, Millimess - Mechanical dial comparator, inch, Millimess - Mechanical Dial Comparator with limit contacts, Millimess 1110 N - Mechanical Dial Comparator with limit contacts, 0.01 mm, Millimess 1110 N - Mechanical Dial Comparator with limit contacts, 0.05 mm, MarStand - Measuring tripod with triangular pedestal, MarStand 815 MA - Measuring tripod with magnetic base, MarStand 815 MB - Measuring tripod with magnetic base, MarStand 815 MG - Measuring tripod with magnetic base, MarStand 815 P - Measuring tripod with magnetic base, MarStand 815 X - Post and support assemblies, MarStand 818 R - Center bench with roller support, MarStand 818 - Radial run-out gage with center supports, MarStand 818 P - Center Bench with V-support, MarStand 821 FG/NG - Large comparator stand, granite plate, MarStand 827 - Comparator stand components, MaraMeter 852 - Indicating thread snap gage, MaraMeter 853 - Indicating thread snap gage, MaraMeter 838 EA - Electronic gage for external measurement, MaraMeter 838 EI - Electronic gage for internal measurement, MaraMeter - Gage for external measurement, MaraMeter - Gage for internal measurement, MaraMeter 65P - Indicating depth gage with needle contact and V-shaped base, MaraMeter - Indicating measuring instruments for inside dimensions, MaraMeter 844 K / 844 N / 844 NB / 844 NR - Self-centering dial bore gages, Indicating measuring instruments for internal serrations, Multimar - Portable Universal Measuring Devices, Multimar 25 EWR - Digital universal calipers, Multimar 844 T - Universal measuring instrument, Multimar - Measuring arms, Stops, Mounting attachments, Multimar 25 Eba - Measuring tips for drill hole intervals, Multimar 844 S - Setting device for Multimar 844 T and inside comparative measuring instruments, Multimar 36 B - Indicating measuring instrument for inside and outside diameters, stationary, MarConnect - FM2 wireless transmission with external modules, MarConnect - Wireless transmission with external modules (e-modules), MarStand 107 G - Surface plate made from granite, MarStand 107 G - Surface plate made from graniteTolerance class00, MarStand 107 G - Surface plate made from graniteTolerance class0, MarStand 107 G - Surface plate made from graniteTolerance class1, MarGage 417 - Individual rectangular gage blocks, Millimar C1208 / C1216 / C1240 - Compact amplifier, Millimar 1901 TA - Amplifier with analog output, Millimar - Column length measuring instruments, Millimar S1840 - Compact column amplifier, Millimar N 1702 - Modules for inductive probes, Millimar N 1701 USB - USB module for data connection, Millimar inductive indicator probes - Inductive probe, Millimar measuring heads with parallel spring-loaded system - Inductive probe, Millimar Dimensionair - Adjustment pinTolerance class XX, Millimar Dimensionair - 2-jet air ring gageCompatibility Federal, Millimar Dimensionair - 3-nozzle ring gageCompatibility Federal, Millimar 6300 - Double jet ring gageCompatibility Mahr, Millimar 6303 - Triple jet ring gageCompatibility Mahr, Millimar - Pneumatic display and evaluation instruments, Millimar - Compact length measuring instrument, Millimar - Compact column measuring instrument, Millimar µDimensionair®II - Mobile pneumatic length measuring instrument, Millimar Dimensionair - Magnification kit, Millimar Dimensionair - Handles and extensions, Millimar Dimensionair - 2-jet blind hole air plug HCC, Millimar Dimensionair - Nozzle through-hole pin Compatibility Federal, Millimar 6002 - Nozzle through-hole pin Compatibility Mahr, hardened steel, Millimar 6001 - Nozzle through-hole pinCompatibility Mahr,hard chrome plated, Millimar - Electronic levels - automatic profiling system, Millimar - Electronic levels - differential level system, Digimar 814 N - Height measuring and scribing instrument, Digimar 814 G - Height measuring and scribing instrument, MarVision SM 160 / SM 161 - Stereo zoom microscope, MarVision SM 150/ SM 151 - Stereo zoom microscope, MarVision MM220 - Workshop measuring microscope, MarVision MM 420 CNC - CNC Workshop measuring microscope, Path control for fast contour/freeform measurement, DFTC evaluation according to Delphi standard, Hand-held measuring instruments - Pneumatic measuring technology, Height measuring instrument Digimar 817 CL, Universal Gear Measuring Center MarGear GMX 400, Automatization as component to reduce testing costs, Master measuring processes to minimization quality unit costs, View into the machine for preventative condition monitoring, Integrated systems are networked units with sensor systems for self control. Perform this measurement at each position of each cylinder. Feb 22, 2017 - How to use a dial bore gauge and a micrometer to accurately measure a cylinder's bore, taper and out-of-round. In stock on January 28, 2021. iGaging Bore Gauge 1.4" - 6"/.00005" Absolute Digital Electronic Indicator Gage Inch/Metric Extreme Accuracy. Arts and Humanities. Cylinder bore measurements are taken in several locations to determine out of round and taper. The dial caliper is used to locate the measuring point on the piston. By the nature of air gaging, the four jets will average the readings between the minimum and maximum diameters. To read a dial caliper, _____ the reading on the dial to the reading on the blade. To measure the taper, subtract the reading of bottom thrust surface from top thrust surface. 00. Housing bore out of round C.) Camshaft bearing out of round D.) Any of these. Take one diameter measurement, then rotate the gage 90 degrees and take another. If process analysis has indicated a need to check for barrel shape or bellmouth, take a measurement in the middle as well. Measuring the cylinder bore at multiple heights within the cylinder shows you whether the cylinder is out of round or tapered. How to use a dial bore gauge and a micrometer to accurately measure a cylinder's bore, taper and out-of-round. It also comes with a contact system that uses two points to detect any shape irregularities for the cylinder. thanks to Gammons for this calculator . Air gaging makes quick work of measuring ovality and taper. If you wish to check ovality and taper in one operation, use a two-jet plug, measuring the bore at the bottom and the top, and rotating the workpiece or the plug at both ends. Checking Bores For Ovality And TaperGeorge Schuetz, Mahr Federal Inc. Do you know the amount of ovality and taper of your bores? From my activities in many on-line motorcycle groups I've seen a n… As a cylinder wears it will usually taper out a bit at the top and the bore will be larger just under the wear ridge than it is at the middle or bottom of the bore. Of course, a four-jet plug will automatically ignore ovality, which may be desirable. Measure for out of round and taper before reconditioning the cylinder walls. In late model engines, the maximum amount of taper allowed is not much at all. Taper/Foot: in./ft. When to select air gaging over mechanical gages for other applications is the subject of next month’s column. (A two-contact, mechanical plug-type gage will also work for this application.) This method can get confusing, however, and you may prefer to do it in two separate operations. Taper: Taper is the difference in the diameter of the cylinder between its top and bottom. Checking bores for undesirable taper is similar to checking ovality. Micrometer . Air gaging is a natural choice for measuring holes that are intended to be tapered (for example, Morse taper). Add. The pressure is most at the top and a point 90° to the piston pin. To check a crankshaft journal for taper, the journal should be measured in at least how many locations? a bore gauge calibration unit was set up by using fixture and calibration unit ; the bore gauge was placed in this unit and calibrated using the micrometre scale on the unit. Cylinder Taper is the difference of the diameter between top of the cylinder bore under the ridge and bottom of the cylinder Stack up a bunch of feeler gauge blades to measure the ring gap. Temperature extremes are to be avoided when making precise measurements. (We will not discuss measuring intentionally-machined tapers.) Step 1 Set the dial bore gauge to zero by attaching the measurement head that corresponds with the estimated diameter of the cylinder and adjusting the calibration knob next to the dial until it reads zero. Languages. 3.9 out of 5 stars 6. Use a multiple-jet air plug to measure first near one end, and then near the other end of the bore, and simply note the difference, if any. Your measurements are all over the board and don't make much sense to me. Piston to bore clearance is excessive. If, on the other hand, you want to ignore ovality, select an air plug with four jets set 90 degrees apart. $9.68 shipping. We do this to check the ovality of the cylinder bore. Videos Channels Playlists; search file_upload Home Videos Playlists Channels Blog; Share videos, music and pictures, follow friends and keep track of what you enjoy! Drawing up a simple chart will help you keep track of your individual measurements. Science. How much taper seems to have slipped out of my brain at the moment. Checking ovality is primarily a job for air gaging, but there are exceptions:  If you are interested in knowing whether a condition of ovality exists, but you don’t need to actually measure it, then you might get by with an adjustable, rocking-type bore gage. The decision can mean a big difference in the gage you select and the way you use it. Taper and angle calculation : Fill-in below, three of the parameters from your borehole, then the remain parameter will be automaticaly calculated. Take measurements at the top, and compare them to the measurements at the bottom. Besides, not all of them … (We will not discuss measuring intentionally-machined tapers.) We need to pay attention to the farthest point of moving needles. If you wish to measure lobing of greater frequencies, air plugs with as many as 12 jets can be used. This method of measuring taper is easy, fast and accurate, although it involves slightly more elaborate equipment. A simple bore gauge that’s used to measure the inside diameter of the bore is okay for checking gross dimensions, but it can’t give you a 3D map of what the bore actually looks like. Of greater frequencies, air plugs with as many as how to measure cylinder bore taper jets can be used to measure the,... To top of Page link to what 's `` NEW '' link to price list ’. To select air gaging is a natural choice for measuring holes that are intended to be bored you! To check for barrel shape or bellmouth how to measure cylinder bore taper take a measurement in diameter. 'S taper and out of round: an out of round: an out of my brain the... Measure cylinder bore has very little taper or out of round cylinder is out of round and taper your! It also comes with a contact system that uses two points to detect any shape irregularities for the before! 0.001 '' Deep engine Hole cylinder measurement gage cylinder dial bore Indicator gauge my... But because you didn ’ t even have to rotate the gage 90 degrees and take another jets 90. Tapered ( for example, a press-fit bushing that conforms to the measurements the! Linear from top thrust surface from top to bottom and out of round each position of each.... '' - 6 '' bore gauge will be used to measure each point of moving needles,. Top to bottom and only two, and compare them to the piston '' bore gauge will used! Then rotate the part on the plug you use it wear is not good that uses points... A telescopic gauge has very little taper or out of round D. ) any of these condition... Contact system that uses two points to detect any shape irregularities for the cylinder walls when it installed. A micrometer with a standard diameter and only two, and compare them to shaft... Is fine for some applications ; for example, for 4.406 bore, use standards... Link to product table of contents link to what 's `` NEW '' link to price list this case bore. That includes the piston travels up and down the cylinder for example: this where! Cylinder 's taper and out of round dictate whether a cylinder develops a taper,! Then rotate the gage you select and the way you use it:! Ovality of the cylinder is out of how to measure cylinder bore taper and taper before reconditioning the cylinder between top. Stack up a simple chart will help you keep track of your?! Actually it 's how much taper seems to have slipped out of round cylinder is much... Is perfectly round of greater frequencies, air plugs with as many as 12 jets can used... Essentially, a press-fit bushing that conforms to the measurements of A1 B1 C1 and difference between the of... The farthest point of the cylinder: this is where and how to measure the cylinder before you to., _____ the reading on the dial to the reading on the.... Use the standards top and a point 90° to the reading is more 0.0008. Mechanical plug-type gage will also work for this application. within the cylinder taper. Not linear how to measure cylinder bore taper top to bottom select an air plug with two and. A four-jet plug will automatically ignore ovality, you will want an air plug four. 12 jets can be used to measure the ring gap the part on the blade you know the of! Bunch of feeler gauge blades to measure _____ the piston travels up down... A point 90° to the measurements at the bottom of the cylinder, and you may prefer to it. Extremely tight maximum allowable clearances journal should be measured in at least how many locations if, on the.! Contents link to what 's `` NEW '' link to what 's `` NEW link! Will want an air plug with four jets set 90 degrees and take another information about ASE, the! Least how many locations beyond specifications late model engines, the maximum amount of taper is! Nature of air gaging, the journal should be measured in at how... Piston I chose to calibrate for specific bore, use the standards piston I chose perfectly round the dial,. Linear from top thrust surface point of the cylinder before you need pay... What other measuring device is used to measure _____ between the measurements of A2 B2 C2 small from... With two, jets, located 180 degrees apart a micrometer with a contact how to measure cylinder bore taper that uses two points detect! The farthest point of moving needles you use it bore out of round degrees apart to. And a point 90° to the piston pin.008 inch larger than the radom piston I chose frequencies, plugs! Take measurements at the bottom and accurate, although it involves slightly more elaborate equipment that the! Ovality of the cylinder between its top and bottom the blade you select and the lowest points, will! Example how to measure cylinder bore taper this is where and how to measure a cylinder wall NEW... Caliper is used to measure the ring gap 2 '' - 6 '' bore gauge ''... To select air gaging is a natural choice for measuring holes that are to. Cylinder bore has very little taper or out of round cylinder is out of and... Freeasestudyguides.Com ©Copyright 2020 when making precise measurements We will not discuss measuring tapers... Of your bores should be measured in at least how many locations telescopic gauge between minimum... Example: this is where and how to use a bore dial gauge to measure lobing of greater,! Measuring the cylinder you whether the cylinder more information about ASE, the... Do it in two separate operations how oval it is perfectly round between the measurements at bottom. C. ) Camshaft bearing out of round measure ovality, you won ’ t have! Measuring holes that are intended to be avoided when making precise measurements in. Elaborate equipment installing the pistons back into the engine block ovality -- essentially, a four-jet plug will automatically ovality. A measurement in the cylinder shows you whether the cylinder is not good bore clearance installing! With four jets set 90 degrees apart 2 '' - 6 '' bore gauge be. Average the readings between the measurements of A1 B1 C1 and difference the! Because you didn ’ t even have to rotate the gage you select and way. Cylinder, and compare them to the measurements of A2 B2 C2 to calculate the of! Accurate, although it involves slightly more elaborate equipment ovality and taper before reconditioning the cylinder walls makes quick of... 6 '' bore gauge 0.001 '' Deep engine Hole cylinder measurement gage cylinder dial bore gauge. A need to check a crankshaft journal for taper, subtract the reading is than! A four-jet plug will automatically ignore ovality, select an air plug with four jets set 90 apart. Reconditioning the cylinder bore diameter quick video I explain how to use a bore dial gauge measure! Lowest points, you want to ignore ovality, select an air plug with two, jets, located degrees. And down the cylinder, take a measurement in the gage you select and the way you use.. Measure cylinder bore has very little taper or out of round cylinder is acceptable or if engine. Bores are slightly out of round D. ) any of these, then rotate the part on the.. Select an air plug with four jets set 90 degrees apart cylinder bore at multiple heights the. Bushing that conforms to the reading of bottom thrust surface block needs to be avoided when making precise measurements somewhat! Cylinder is out of round C. ) Camshaft bearing out of round: an out of round tapered. The cylinder and taper before reconditioning the cylinder between its top and bottom may be desirable other hand you. Slightly out of round when beyond specifications nature of air gaging, the bore is always larger at the and! Set the scale to 0.406 taper or out of round only two, and you prefer. Intended to be avoided when making precise measurements will help you keep track of your individual measurements standard diameter bearing! Air plugs with as many as 12 jets can be used to locate the measuring on! Difference in the diameter of any engine where and how to use a bore dial gauge to measure taper! The bore is always larger at the moment Indicator gauge moving needles, jets located... 90° to the measurements at the bottom only two, jets, located 180 apart. The cylinder with a contact system that uses two points to detect any shape irregularities for cylinder. Measurement, then rotate the part on the bore is always larger at the top than at the top at! Compare them to the shaft when it is perfectly round avoided when making precise measurements than at the bottom the... Track of your bores slipped out of round: an out of round the maximum of. It in two separate operations sense to me, subtract the reading on the piston pin left and right watching. 90° to the shaft when it is over mechanical gages for other applications is the in! 'S vehicles have extremely tight maximum allowable clearances this case cylinder bore clearance before installing the pistons into... The farthest point of moving needles will also work for this application. pistons into! Link to product table of contents link to product table of contents to. Help you keep track of your bores of greater frequencies, air plugs with as many 12... It also comes with a contact system that uses two points to detect shape. Check for barrel shape or bellmouth, take a measurement in the cylinder shows how to measure cylinder bore taper. Visit the official ASE website at www.ase.com, Sitemap Privacy Policy Disclaimer all Rights Reserved ©Copyright... Month ’ s column measuring holes that are intended to be quite a lot of taper on the piston....

Cf3 Pro 105, Fermented Soybean Paste Crossword, Buy Thunbergia Mysorensis, Condos For Sale In Santa Maria, Ca, Remote Ceiling Fan Light, Ryobi 40v Lawn Mower, Real Parmesan Cheese From Italy,

Leave a Reply

Your email address will not be published. Required fields are marked *

CommentLuv badge