Youtube comments of crazypj (@1crazypj).

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  330. That was effin awesome! All the very best machinist's can switch between Imperial and metric, nice to see someone so young doing it (now I feel really old - Oh, I am ) Glad you mentioned it was about half the cost of new plus 'only' a week lead time instead of months I was wondering just how expensive a new cylinder would be to make a VERY expensive repair worthwhile. From the little I know, that was very expensive just in consumables., Sunnen honing oil is expensive in USA, god only knows the cost in Oz? Honing stone sets were about $30.00 US in 2004, as with everything I bet price doubles by the time it gets to you, plus 18 years of inflation ( Sunnen were about half the price of the AMMCO hones I have, plus far easier to get) I was a little surprised about Sunnen stone/guide sets, look exactly like the ones used in automotive applications, but I guess that's why Sunnen are still in business when other companies have shut down. It's the first time I've seen a bore gauge that large actually being used, largest bores I was teaching people to hone were Harley Davidson cylinders, about 4"x 6" by the time they were too thin to use for teaching (although they did make 'different' lampshades when only the fins and anti 'ring' stringers were left)I had one student who had been a 'machinist' for 27 years who told me flat out it wasn't possible to hone cylinders without CNC machine to accuracy of +/- 0.0002", he did apologise at end of course though. (I think he was more of a machine minder rather than machinist?)
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  412. I'm glad you at least mentioned coal produces radioactive 'waste' For the last 45 (probably more) years I've been asking about 'fall out' from coal fired power stations and never got any answers. (to me, it seemed logical that if coal has radioactive Carbon 14, it probably also has other radioactive elements) I wondered as even a very low background level would be concentrated when millions of tons of coal are burned at one place About 2~3 years ago I asked again in the comments section on a Thorium reactor video. At the time I was told that if I found out anything it would probably be better to stay quiet as the 'industry' wouldn't want it to be common knowledge. I did get a reply from a guy who was doing his thesis in the late 1970's who actually did monitor elevated radiation around coal powered power plants. I forget the details but it has been known about for decades but is 'hidden' and very difficult to find real information (knowing the right questions?) The other thing, wind power isn't really very 'green' It isn't just the production of the parts, the blades 'wear out' pretty fast plus kill tens of thousands of birds and displace a lot of wildlife due to the land clearing, etc. Thorium appears to be much safer even if more expensive at present, the engineering challenges can be overcome if there is a will to do so Long term, everything I've found out about Thorium reactors seems to be a plus as it can use the waste from conventional nuclear plants as fuel making nuclear proliferation far more difficult when Plutonium is being converted to something 'safer' rather than being stockpiled to make 'dirty' bombs. Sorry for the long post but I think this could warrant a couple more video's?
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  419.  @siraff4461  There isn't an ICE motor made that gets 40% efficiency. (AFAIK not even any experimental ones?) The best is about 38% and that's a in a very large cargo ship. Some 'lean burn' engines are close particularly when turbocharged with water/methanol injection to keep heat to manageable levels. Vast majority of ICE vehicles are closer to 33% efficient, it's difficult to get much better except in a laboratory under very strictly controlled conditions (waste heat is the biggest issue) Personally I'm pro ICE, I can DIY pretty much anything on any of my cars and motybikes which I know would be impossible if I was 'renting' a Tesla or similar (if you don't have full access to software you don't really own the vehicle, plus, I really am afraid of battery catching fire, it's happened to several of my friends, one had it happen twice before he gave up) As for commuters, I totally agree it's a stupid waste of resources when majority could 'work from home' on a far more flexible schedule. even if it did put some managers out of work. That said, AI may well put a lot of those people out of a job in the near future? People with 'hands on' skills repairing stuff may be in much greater demand in future, at least as much as software troubleshooters (after almost 40 years Windows still has 'blue screen' issues and monthly security udates so I wouldn't count on it until robots can do it quicker and cheaper) There are already developments in the building industry requiring less semi skilled trades although labourer's are difficult to replace with something cheaper even when a power wheelbarrow is available (requiring one person instead of four)
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  499.  @d4a  It depends on the type of adjuster and where it's located. Usually you have a 'U' shaped bracket of some type with a screw on one side and a spring on the other then a 'flat' plate between the screw/spring for the next throttle shaft. As sets of carbs are almost always designed to be machined from both sides and the throttle shaft adjuster determines if it's a 'left carb ' or 'right carb' (various bosses are not machined on the outer carbs) The position of bracket can cause adjustment of #4 'far right' on motorcycle numbering) to open #3 which will mess up idle speed (or, if 3&4 were already messed up, idle speed may need to be raised as sync gets closer). Honda is the manufacturer who decided in their training to specify a base carb on 1978~79 models (I forget exact year) Various training schools have kinda stuck with the convention even when it isn't used by earlier models or other manufacturers (I only know as I was teaching at a motorcycle tech school almost 12 years) As for flywheel, it doesn't 'balance' anything but the mass is to smooth out crankshaft speed variations. With less mass engine will accelerate faster and even though the difference in flywheel weight is minuscule compared to total weight of car it has been shown to improve acceleration and lap times. If all cylinders are completely even and firing correctly, you can either lower idle rpm (within limits to keep oil pressure acceptable) or, have same idle with less flywheel mass Sorry to be such a PITA over semantics
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  550.  @gibroon4418  It's actually very simple. An ICE car can be repaired, kept on the road and reduce emissions simply by the fact the 'pollution' caused by it's manufacture has already been accounted for and the total emissions from burning fuel is way less than a single round trip flight by a transport or passenger aircraft of about 4,000miles. The total life of an EV is less than 20 years (not including write offs from accidents and spontaneous fire) As battery life is less than optimal and replacement unrealistic on a 15-20 yr old vehicle, new ones have to be created constantly so people can 'get around' A single mining diesel electric dump truck with a 50 to 70 litre engine burns around 800 to 1200 gallons of fuel per 12 hr shift (3,100-4,600 litres). I guess this is factored into the total carbon emission for EV's and part of the reason they are so high compared to ICE? If you decide not to take a holiday or vacation and only travel on foot or by wooden sailboat made by hand without any power tools cut with sharpened stones, give up cell phone and satellite 'anything' you''ll be doing your bit to save the planet (oh, you'll also have to live in a wood house as bricks, cement and roofing compounds also take a large amout of energy to produce, far more than a 50 yr old ICE car will produce) There is also the issue of tyre wear, study in Britain showed EV's, being a lot heavier cause carbon particles around 3 micron which get into water supply, food and ultimately you. (similar happens withICE vehicles but majority are lower powered, lighter with smaller tyres driven lass aggressively so tyre wear is generally lower, even on 18 wheelers or 'artics')
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  636. This is a better 'review' than most. I guess you could write the next 'Zen and The Art Of Motorcycle Maintenance' 🤔 Personally, I've worked and ridden motorcycles for about 55 years, multi line dealers, trade school teacher, etc with relatively brief periods as a precision machinist and 'Plant Fitter (Grade B)' working on construction equipment (great title, good wages, nasty job 90% of the time) Just want to point out, Grade 'B' is higher level than grade 'A' (British classification, doesn't make sense to me?) The main reason for 'break in' is so you can get used to the new bike, even if your experienced there will be quirks you may not notice with a new bike. I don't know about today's Honda's but back in the 70's they would take them to 'red line' through the gears on rolling road straight after assembly so it really isn't a problem exceeding handbook specifications. With modern manufacturing and better oils, break in isn't really needed although transmission gears may wear in and get 'polished' as it's been found that grinding and honing gear teeth isn't really necessary on production engines where a little extra noise and roughness is expected (I think Kawasaki started it around 1990 on 'cruisers', some transmission gears were ROUGH and caused gear whine until they had done around 6,000 miles) The motor has the characteristic balance shaft 'knock' and cam chain rattle at idle, both should be sorted out during first service, (if the dealership knows how, not all mechanics read service manuals unless they are looking for torque spec or wiring diagrams) For off road, smaller and lighter is always better in my opinion (and having raced off road Enduro and some Motocross I feel qualified to comment) The dual sport 'adventure bikes' are really too heavy for anyone other than an off road expert and despite what the marketing says they are really designed as street bikes and gravel road bikes
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  690. I'm a motorcycle mechanic and low tension rings have been around since the 1980's. If you want to know if your burning oil, just go out at night and have someone drive up behind you with low beam on, (engine has to be fully warmed up or all you can see will be condensation) at a stop, light blue smoke is visible even with catalytic converters The problem isn't oil jets and low tension rings but people wanting low maintenance and dealerships relying on a captive market. (one thing that has ALWAYS pissed me off is being overcharged for 'shop supplies') If I'm paying $35.00 or more I want the 'leftovers', not have workshop use a tiny bit of whatever and over charge next person for what I just paid for) Selling the same can of aerosol or whatever multiple times is just dishonest The other things are dealer 'up-selling and 'flat rate'. I ran motorcycle workshops for years, we made a profit without a bunch of 'hidden costs' and pissed off customers. I have always found 'flat rate' to be a bad thing as corners get cut to make more money and mistakes get made Any product used by a manufacturer, should be available for general sale Toyota and Yamaha have a very long partnership, it's almost always Dealer/shop General Manager who refuses to sell products (same business model as Apple - you HAVE to come to us, except that was challenged and changed in 2012) Workshops I ran paid technicians a fair rate to do the job right, salespeople went through handbooks to explain to customers about servicing. Out of unknown thousands, only two people ever asked 'do I need to know this shit?' It was so unusual I remember it well. Even today, people are still carrying out 1920's~30's 'warm up and gentle driving' plus a load of other fallacies that haven't applied for more than 50 years. You don't have to 'drive it like you stole it' but a lot of things still being done cause more harm than good (excessive idling with AC on will overload various parts - eventually) It's no wonder vast majority of customers refer to 'stealerships' Oh, Magnusson Moss act still applies to auto's even though dealers hate it
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  743. I was a motorcycle instructor for almost 12 years, feel I'm quite lucky to be retired now and only work on my own vehicles. I have some experience with UTI, it was quite a good training program and actually worth the money until around 2005 when they started getting incredibly greedy. In 2000 annual cost was around $12,000 and you learned a lot. By 2006, high schools were targeted and the emphasis was to pass as many as possible, managers did not follow school rules and forced instructors to pass students even when students admitted to cheating on tests and projects. (I refused on several occaisions, probably main reason I got canned?) Scouts were not allowed to be paid by how many people they enrolled or commission but talking to some of them, it's exactly how they got paid. (basic pay plus 'incentives' that got paid out in quarterly intervals if students stayed in school) Total cost in 2011 was around $46,000, students were often told they could make more if they took every course available plus extra manufacturer specific courses, majority took at least one 'import' plus Harley Davidson Placement in a job meant someone actually turned up for work after graduation, even if they were walked off the premesis a few minutes later it counted as student services finding a job placement so the advertising was 'true'. I was laid off mid 2011, probably illegal as any other industrialised country only allows lay off when job no longer exists or department is closing In my case, they moved someone almost incapable of doing the job but 15~16 years younger into the position. (just reading a lesson plan isn't much use if you can't actually explain how and why things need to be done in a certain order) I tried fighting it but was told I would forfeit redundancy if I didn't take it AND sign a non disclosure (about six months after lay off) Pretty sure a non-disclosure would now be invalid? I'm not making any untrue statements. Flat rate is biggest con ever, it does lead to cutting corners plus 'up-selling' unnecessary work in many cases or just plain ripping people off. I'm not 100% sure but believe Kawasaki was the only manufacturer who made suggestions for bikes over 3 years old with a flat rate sliding scale (I think Harley Davidson may do something similar ) The truth is, less than 5% of graduates actually stay in the industry more than 5 years after graduation, many never even start in a shop (2010 figures).
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