|
Charlie Michael
2,196 posts
53 months
|
sumpoil said: Working on the same theory as the designers of Gillette razors, i confidently predict that my patent on this design will net me a fortune .....  ..... and it definitely has a MASSIVE future in Hollywood car chases!  That'll be the fast and furious gearstick. 
|
|
|
CampDavid
7,713 posts
67 months
|
sumpoil said: Working on the same theory as the designers of Gillette razors, i confidently predict that my patent on this design will net me a fortune ..... ..... and it definitely has a MASSIVE future in Hollywood car chases! I just patented that. Mine featured only 1-13, I did, however, include gear 12...
|
|
|
JulietRomeo
19 posts
16 months
|
what's happened to 12th? (CampDavid you beat me to it!)
|
|
|
Jacobyte
3,812 posts
111 months
|
The 12th gear is shown on the OP with a wiggly arrow by it.
|
|
|
kambites
32,864 posts
90 months
|
Bugger this "discrete gears" lark; why not just have a CVT with an analogue dial for selection - infinite gears! 
|
Advertisement
|
|
|
B10
690 posts
136 months
|
sumpoil said: Working on the same theory as the designers of Gillette razors, i confidently predict that my patent on this design will net me a fortune ..... ..... and it definitely has a MASSIVE future in Hollywood car chases! While you are about add some addition reverse gears.
|
|
|
rwindmill
97 posts
27 months
|
I remember reading in Car & Car Conversion magazine (whatever happend to that publication?)back in the early 90's when Ford Motorsport introduced a 7 speed gearbox on the Escort Cosworth rally car (the article was called 7 Gear itch, those journos and their sense of humour).
After about half a season they switched back to the standard 5 speed box because the works drivers were complaining that there were just too many gear options.
If you look at where large numbers of gear ratios are used (F1, Moto GP, road bikes) it tends to be with engines that have low levels of torque and a very narrow power band. Are BMW trying to give us a hint on how their future engines will perform.
Can we expect a future M3 to have a 500bhp 1 litre engine, that revs to 20,000rpm but only produces power from 19,800 onwards and therefore need 15 forward gears????
If it happens, remember where you heard it first :-)
|
|
|
E38Ross
Original Poster
10,515 posts
81 months
|
kambites said: philmots said: I'd happily have a 7th overdrive in my 197.. It bloody well needs it Does it? Or does it just need 6th to be higher? what's your gripe with 7 forward gears? it makes a better case for itself for less powerful cars. and for someone who said it'll make acceleration times slower is wrong; certainly if they keep the first 6 ratios the same, but a 7th for cruising; or even if they just make the 1st 6 gears a tiny bit shorter but a taller 7th it'd be quicker. for instance, back in around 2003 BMW put the 6 speed box on their 330i, the first 5 ratios were the same, with 5th being geared to about 160mph...they then made a taller 6th, gearing it to 200mph...on the motorway it was considerable more economical and more refined. this just takes it one step further. everyone on here just moans about anything new. if you ever get a car with a 7 speed box.....DON'T use 7th gear. how is that for you? by the looks of the gate pattern, unless you're shifting into 7th, it wouldn't change your driving one bit unless on the motorway because the 1st 6 gears are in the normal way....and i suspect you wouldn't use 7th until doing at least 70mph and only when cruising, if on a hoon and using more revs you'd never need it, so what's the problem? bit of a non-issue in my opinion. quit your whining and be glad they're still making manual boxes. if i were to have a manual car and had the choice between 5, 6 or 7 gears....i'd take the 7th depending on the ratios. edit - not a personal dig at you kambites.....just everyone who seems to whine about it.
|
|
|
oli_quick
375 posts
98 months
|
Makes perfect sense for big disel engines...since the revs top out very quickly.
Lots of ratios provide that needed power span
|
|
|
Timberwolf
4,684 posts
87 months
|
Why all the complication and exotic fluids inside the box and not simply a lockout solenoid on the gate? (Plenty of cars already have this to prevent mis-shifting to reverse once underway, so I can't see why it wouldn't extend to having the same thing on the forward gears unless the space around the shifter is extremely constrained.)
|
|
|
rohrl
3,761 posts
14 months
|
Pah. My pushbike has 30 speeds.
|
|
|
Alfanatic
5,992 posts
88 months
|
I think they're missing a trick and with all these ratios should go for a radial shift pattern instead of an H. So 1st gear is forward and a little to the right, 2nd is one step clockwise, 3rd is straight to the right etc. 
|
|
|
Puggo
6 posts
45 months
|
Why go for 7 gears. Does their engine not have adequate torque spread? Or is it merely one-up-manship? 6 speed manual is more than enough - petrol or diesel (trucks aside). Years ago, I worked on a Mitsubishi with a 4 x 2 transmission. It had a low range for city driving and a high range for highway. This was fun to drive as the gear ratio steps were ideally suited for the type of driving, thereby avoiding too many gear changes. Ironically, it was not well received by Jo Public and it was modified into a 5 speed. http://en.wikipedia.org/wiki/Mitsubishi_Super_Shif...cheers P
|
|
|
Six Fiend
5,277 posts
84 months
|
If Spinal Tap did gearboxes...
|
|
|
E38Ross
Original Poster
10,515 posts
81 months
|
Puggo said: Why go for 7 gears. improve emission ratings and fuel economy. is it that hard for people to realise this? it's why porsche did it, it's why bmw are doing it.
|
|
|
900T-R
18,563 posts
126 months
|
E38Ross said: everyone on here just moans about anything new. if you ever get a car with a 7 speed box.....DON'T use 7th gear. how is that for you? by the looks of the gate pattern, unless you're shifting into 7th, it wouldn't change your driving one bit unless on the motorway because the 1st 6 gears are in the normal way....and i suspect you wouldn't use 7th until doing at least 70mph and only when cruising, if on a hoon and using more revs you'd never need it, so what's the problem? bit of a non-issue in my opinion.
quit your whining and be glad they're still making manual boxes. if i were to have a manual car and had the choice between 5, 6 or 7 gears....i'd take the 7th depending on the ratios. One snag that I remember was being pointed out by techy types in a time when 5-speed 'boxes were a relative novelty and some drivers kept on using their 5-speed as a 4-speed; gearboxes are normally specified to do most of their mileage in top, as no one normally sits in a lower gear for tens or hundreds of miles on end - which might become a problem in the long run.
|
|
|
McClure
1,226 posts
15 months
|
davepoth said: Limpet said: An answer to a question nobody is asking, IMHO. The question they're asking is "How do we get another few mpg on the EU economy cycle?" and this is probably the answer. Or just the German intra-national war for MORE! MORE power! MORE space! MORE gears!
|
|
|
XitUp
7,690 posts
73 months
|
Why can't I find a picture of the gear stick from the Morris Minor in Reeves and Mortimer's Driving School? Would fit this topic perfectly. rwindmill said: If you look at where large numbers of gear ratios are used (F1, Moto GP, road bikes) it tends to be with engines that have low levels of torque and a very narrow power band. F1 engines don't really have low levels of torque.
|
|
|
sumpoil
60 posts
33 months
|
CampDavid said: sumpoil said: Working on the same theory as the designers of Gillette razors, i confidently predict that my patent on this design will net me a fortune ..... ..... and it definitely has a MASSIVE future in Hollywood car chases! I just patented that. Mine featured only 1-13, I did, however, include gear 12... it's a time saving performance enhancement .... you've heard the phrase 'drop a cog - and floor it!' - well this is where the phrase comes from - in my design it's already dropped so you can just floor it, saving vital milliseconds .... and you all thought i'd just foolishly missed it out. shame on you ... 
|
|
|
E38Ross
Original Poster
10,515 posts
81 months
|
XitUp said: Why can't I find a picture of the gear stick from the Morris Minor in Reeves and Mortimer's Driving School? Would fit this topic perfectly. rwindmill said: If you look at where large numbers of gear ratios are used (F1, Moto GP, road bikes) it tends to be with engines that have low levels of torque and a very narrow power band. F1 engines don't really have low levels of torque. neither do big lorries
|
|
