tag:blogger.com,1999:blog-5030145265861917845.post6073907370920453948..comments2024-03-20T11:41:56.776-04:00Comments on Tank Archives: American ErgonomicsPeterhttp://www.blogger.com/profile/09622237223229485503noreply@blogger.comBlogger29125tag:blogger.com,1999:blog-5030145265861917845.post-9321713378488855262020-02-04T11:14:43.593-05:002020-02-04T11:14:43.593-05:00Ya'll are a hoot getting worked up over an erg...Ya'll are a hoot getting worked up over an ergonomics paper from the 40s! Anonymoushttps://www.blogger.com/profile/07902821110420776991noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-30546070291100049792017-03-16T15:29:40.043-04:002017-03-16T15:29:40.043-04:00The conclusions regarding the sufficiency of headr...The conclusions regarding the sufficiency of headroom in the Sherman is made by the Americans based on their measurements of the tanks. There are no engineering drawings involved here. Seems you are a much more eager writer than reader, as usual.Peterhttps://www.blogger.com/profile/09622237223229485503noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-64330011115383105672017-03-16T14:36:43.763-04:002017-03-16T14:36:43.763-04:00Yes. That´s why I suggest to compare only engeneer...Yes. That´s why I suggest to compare only engeneering drawings before jumping to conclusions.critical masshttps://www.blogger.com/profile/02366274198749901618noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-82737770556438974342017-03-15T13:35:29.108-04:002017-03-15T13:35:29.108-04:00I'm reading "Panzer IV Sherman: France 19...I'm reading "Panzer IV Sherman: France 1944" and it said that Sherman gunners had trouble with the new M55 gun sight because they tended to wear a steel helmet over their tanker helmet. So they really do need a lot of head room no matter what the researchers say.Mobiushttps://www.blogger.com/profile/14106033708959389746noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-3593803645521189072017-03-12T13:49:58.696-04:002017-03-12T13:49:58.696-04:00So let me recapitulate it. You are not interested ...So let me recapitulate it. You are not interested to check mistakes made by this blogger if they don´t fit Your´perception, comrade?critical masshttps://www.blogger.com/profile/02366274198749901618noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-36345348854184600212017-03-12T13:48:44.608-04:002017-03-12T13:48:44.608-04:00Fact is he is wrong with the crampedness of the VK...Fact is he is wrong with the crampedness of the VK45.03 H. Fact is also, Peter lied about it by quoting a reference line which was deliberately not correct.<br /><br />I caution everybody to double check any claims made in this blog.<br />critical masshttps://www.blogger.com/profile/02366274198749901618noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-73909700871478917952017-03-12T08:26:46.032-04:002017-03-12T08:26:46.032-04:00I've seen enough of your "facts" to ...I've seen enough of your "facts" to conclude you're not worth the effort of engaging with, thanks. Especially without a decent BBS quoting interface.Kellomieshttps://www.blogger.com/profile/04915110653443066212noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-40430585991330249612017-03-11T21:27:52.010-05:002017-03-11T21:27:52.010-05:00lol You're a real piece of work, aren't yo...lol You're a real piece of work, aren't you?Iron Drapeshttps://www.blogger.com/profile/07585842449654170007noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-48587549838466637702017-03-10T04:31:24.176-05:002017-03-10T04:31:24.176-05:00I don´t care what You think I am. But You should a...I don´t care what You think I am. But You should ask Yourselfe the question whether or not You care for facts and if You can actually contribute anything factual to the dicussion. I mean, anything other than name calling or ad hominem attacks...critical masshttps://www.blogger.com/profile/02366274198749901618noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-51074756985267333512017-03-09T22:56:50.890-05:002017-03-09T22:56:50.890-05:00I don't particularly care for autistic monoman...I don't particularly care for autistic monomaniacs.Kellomieshttps://www.blogger.com/profile/04915110653443066212noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-52017785137798840732017-03-09T08:12:17.860-05:002017-03-09T08:12:17.860-05:00I at least care for facts.
While everybody can ma...I at least care for facts.<br /><br />While everybody can make an error, it is important to point out mistakes, particularely, if conclusions in comparative "crampedness" are extracted from incorrectly scaled drawings.<br /><br />But I guess, You don´t like people pointing out the errors made by this blog. critical masshttps://www.blogger.com/profile/02366274198749901618noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-89362913279100137792017-03-08T23:56:23.220-05:002017-03-08T23:56:23.220-05:00oh look it's critical mass.oh look it's critical mass.Kellomieshttps://www.blogger.com/profile/04915110653443066212noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-81522093459947021782017-03-08T20:29:10.423-05:002017-03-08T20:29:10.423-05:00The difference in inclination is not enough to exp...The difference in inclination is not enough to explain 15cm. Vertical distance between bottom and roofplate is 94cm, not 80cm(!). By my estimation, and using Your combined drawing, You appear not to have used the seat as reference but the horizontal distance between seat panel and pedal. If You scale from this reference line You can get within 99.4% of Your drawing. However, the vertical seat now is not 400mm anymore but 480mm, which means all vertical distances will be in error.<br /><br />If You hold that for correct, then You appear to have scaled from a reference line without mentioning the conflicts of other reference lines but to top that of, You seem to have used the (incorrect) vertical scale from the soviet drawing to measure the vertical distances in the VK 45.03 H, instead of using VK´s own measurements, which are perfectly scalable.<br /><br />Precious deception.critical masshttps://www.blogger.com/profile/02366274198749901618noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-3565007721730136022017-03-08T16:49:35.582-05:002017-03-08T16:49:35.582-05:00Probably because headroom is traditionally measure...Probably because headroom is traditionally measured vertically, not diagonally.Peterhttps://www.blogger.com/profile/09622237223229485503noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-8314233746632142032017-03-08T16:36:24.478-05:002017-03-08T16:36:24.478-05:00Taking into account a CAD drawing, and Your claim ...Taking into account a CAD drawing, and Your claim that You scaled by referencing the 400mm seat, I am convinced You made another error. If You had indeed scaled the 400mm seat, You would arrive exactly at my drawing which is using the reference of the 400mm seat as You can see. <br />One source of error could be the VK drawing.<br />Since the VK drawing is perfectly matching all reference lines, -as could be expected from an engeneering drawing- how come You claim only 80cm headroom when CAD measurements give 95cm? <br />critical masshttps://www.blogger.com/profile/02366274198749901618noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-45478295373971382562017-03-08T15:34:55.475-05:002017-03-08T15:34:55.475-05:00Wow you're obsessed with that pedal, aren'...Wow you're obsessed with that pedal, aren't you. I used the 400 mm seat to scale the image, the value that you yourself admit matches the scale. The pedal is not mentioned or used anywhere.Peterhttps://www.blogger.com/profile/09622237223229485503noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-88251862354837773392017-03-08T14:40:57.398-05:002017-03-08T14:40:57.398-05:00http://imgur.com/a/ivwsd
blue: BAMA drawing
red: ...http://imgur.com/a/ivwsd<br /><br />blue: BAMA drawing<br />red: soviet sketch<br /><br />all measurements after scaling using Auto CAD<br />critical masshttps://www.blogger.com/profile/02366274198749901618noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-20917962275407190382017-03-08T14:26:37.083-05:002017-03-08T14:26:37.083-05:00Yes, the pedal is out of scale, but I didn't u...Yes, the pedal is out of scale, but I didn't use the pedal to measure the height of the driver's compartment. Peterhttps://www.blogger.com/profile/09622237223229485503noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-32484720122640502032017-03-08T14:09:27.312-05:002017-03-08T14:09:27.312-05:00I challenge Your assertion as incorrect. Either by...I challenge Your assertion as incorrect. Either by mistake or deliberately misleading. The VK 45.03 can be scaled precisely, because it is an engeneering drawing. The russian drawing CAN NOT be scaled because it´s measurements are contradictory (compared foot pedal H=100mm with the seat backs at H=400mm), You will not be able to bring the russian sketch to one common level where all measurements agree. critical masshttps://www.blogger.com/profile/02366274198749901618noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-82335217872885751292017-03-08T13:55:33.444-05:002017-03-08T13:55:33.444-05:00Yeah, the Soviet standard desires 58 cm of room, t...Yeah, the Soviet standard desires 58 cm of room, the Stuart only has 40 cm of leg room, therefore it is cramped. Anything else you need explained?Peterhttps://www.blogger.com/profile/09622237223229485503noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-35356400538493568532017-03-08T13:53:00.330-05:002017-03-08T13:53:00.330-05:00I blew up the image to have 1 pixel = 1 mm and all...I blew up the image to have 1 pixel = 1 mm and all of my measurements matched up.Peterhttps://www.blogger.com/profile/09622237223229485503noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-46518605009952336852017-03-08T13:40:44.471-05:002017-03-08T13:40:44.471-05:00Plus, the russian drawing is demonstrably NOT an e...Plus, the russian drawing is demonstrably NOT an egneneering drawing and contains multiple contradictions in scales. It´s a sketch indicating *desired* sizes, not *actual* ones.critical masshttps://www.blogger.com/profile/02366274198749901618noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-3793142109513485032017-03-08T13:30:04.767-05:002017-03-08T13:30:04.767-05:00"The height of the driver's compartment i..."The height of the driver's compartment is only 80 cm (31.5"). This is not only less than any position of the Stuart (a light tank!), but out of the 541 men sampled in the 1st Battalion, Armored Force Replacement Training center, not a single tanker would be capable of comfortably occupying this position."<br /><br />Somebody can´t measure. I took the source image, rectified the image according to three lines given with measurements and when I measured the headroom, I found the claim of only 80cm headroom to be not confirmed by the drawing.<br /><br />The vertical distance from axes of seat to roof plate is 98cm, the slightly inclined axis from the bottom via head to the roof plate is 94.5cm in the VK45.03.<br /><br />Just because You don´t understand how to use a ruler doesn´t turn lies into truths... <br />critical masshttps://www.blogger.com/profile/02366274198749901618noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-54616390323553169022017-03-08T08:23:11.565-05:002017-03-08T08:23:11.565-05:00And there is the usual zero-sum game of protection...And there is the usual zero-sum game of protection versus comfort and practicality...Kellomieshttps://www.blogger.com/profile/04915110653443066212noreply@blogger.comtag:blogger.com,1999:blog-5030145265861917845.post-49694493462342320632017-03-07T11:56:00.441-05:002017-03-07T11:56:00.441-05:00That's correct. No helmet can "prevent&qu...That's correct. No helmet can "prevent" concussions. Dan Eganhttps://www.blogger.com/profile/15969235837813666144noreply@blogger.com