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Engineering Explained
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"2017-08-20 14:00:06"
Is It Okay To Skip Gears In A Manual Transmission?
\\hello everyone and welcome in this video were in answering the question is it okay to skip gears in a manual transmission so by skip gears for example going from first year to third gear or for example going from fifth gear down to second gear now this is a question I've seen pop up in the comments section so it's something I thought I would address and you know we're gonna start with talking about shifting then we'll talk about downshifting and then finally get into starting from a stop no manual transmissions by design allow you to choose any gear at any time ... that isn't necessarily mean you should up with by design they allow you to unlike sequential transmissions which force you to do 1-234-566-5432 one ... in order to shift gears mail for up shifting there's really no problem if for example you or let's say you're down in second gear and then you want to shift down to fourth year the only thing you're going to want to do is wait a little bit longer whence you press the clutch in for those reps to drop because since you're going into a tower here are going to be a lower RPM if you try ... if you release the clutch quickly what's going to happen is the car's going to lurch so we can kind of show that as an example urine second you go to fourth quickly you can see there's kind of a lurch there so that's the engine and then the wheels trying to match speeds and see get that lurch it's going to cause a little bit of clutch where ... and you know it could upset the balance of the core honestly it's not as big of a deal on up ships as it is with their own ships and it's certainly something you can do in fact show me with the Camaro SS if you're in first year in your own low fraud alone this is kind of an annoying thing that they do but they do it none the less in a kind of proves a point in the SS if you're in first year low throttle you get up to a certain speed and you want to shift down into second it'll actually force you into fourth gear ... to save fuel in it some you know emissions and fuel economy thing that they've done ... in order to get a better feel the rating for flooring it but it proves you know it's totally fine fun for the fourth for the rest of so what so you're on the high third gear get up to the RPM at night and you know wait a bit for debt down for throttle put it down third there no issue the reps there for let it drop for a good while this BMW has some wrap things you have to wait quite a bit ... upshift I down shift throttle no if you don't properly read mad happen is you'll upset about core look up to so let's say you're drug track Korner your in fifth gear than your come onto a low speed gear you go directly on that second year and released the clutch well read man you mean even lock up the wheels and self before I just it's that so that you don't upset the balance of the car you don't lock up those driven rear or the floor slide we upset the balance of the court you're driving really horrid in it's that downshifts side you know here's ... and you're also going to have additional clutch where because what you're doing is telling me engine a match that hearts a clutch is spinning when you're in a low gear the clutches of course gear to the transmission to the we'll switch spinning at high speed the engines at a low speed you wanna bring that engine speed up match the 2 and then you don't have that imbalance and you won't have that clutch where because the 2 speeds are matched when they connect now our final scenario is it okay to skip a gear from a standstill so if you're the chorus stopped you're not moving can you Stourton say second year third gear something like that Nelson automatics will actually choose to Stourton second year in snow mode so in modes where it knows you have low traction it may start you off in second gear to reduce wheel spin in a manual transmission home honestly it should be done with control in first gear ... it may be easier to prevent slip it's not the end of the world though if you do want to start in second gear just means you're gonna have a bit more clutch where because your engine in order to release the clutch fully to fully engage that clutch you have to have the core at higher vehicle speed man if you were in first gear so in first year for example starting off and I can fully release that looks to be about you know maybe 5 or 6 miles per hour now if we tried that starting in second gear I can't fully released the clutch until about maybe 8 or 9 miles per hour there and so you're getting into a higher speed that means you're gonna have a bit more clutch where an order to do it it's okay if you're in a super slippery scenario and you can't prevent yourself from spinning those tires ... but really in a manual transmission you're going to want to just be able to control it more 9 first year that's a better bet ... okay if you have to do it and you really shouldn't be trying to store in a gear higher than second gear there's really no reason to do that you're just gonna have excessive clutch where so thank you guys for watching if you have any questions or comments feel free to leave them below I'll include some links in the video description of got a bunch of different videos about Rev matching heel and toe downshifting double clutching that kind of thing if you're interested //



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