My wife is into this "Twilite" movie stuff and I was watching it and the guy says "You just have to double pump the clutch.." when she first gets into her "new" truck. I called BS, but now am wondering if I'm right. I like to be right. Its like a '65-'66 Chevy 1/2 Ton. I've driven & owned lots of old chevys and only had to push the clutch once to shift once...hahaha Can anyone tell me if this movie is full of ****? Or am I...hahaha! -John
I know in a '69 Chevy truck its a one shot deal...my brother has a 1942 Jeep thats a one pumper too, my Dad has a 1929 Rolls Royce that you have to double pump 1st gear downshifts
Double clutching was standard procedure when driving non synchro transmissions. upshifting put the clutch in move to neutral let the clutch out and back in and upshift downshifting put the clutch in move to neutral blip the throttle put the clutch in and downshift it's all timing and feel. I learned to pull my 41 chev back into low gear at 15 mph at age 15 and it's been useful driving big rigs and early jags
I can single clutch all of mine EXCEPT the '52 International dump truck. It MUST be double clutched, otherwise the gears grind. Up or down it has to be done or you'll grind the gears off.
Double clutching? Never heard of double pumping. My all-synchro Ranger 5 speed stick operates a little smoother if you double clutch when going down to 3rd, 2nd and especially 1st. To an extent the whole operation between gears is one smooth and well coordinated exercise. Basics are: Depress clutch pedal. Shift from 2nd to neutral. Release clutch, just enough so it will drive the main shaft. Rev engine a little bit, not much, you just want to bring the rpm to the point where 1st will engage smoothly. You'll feel the point where it wants to slide in easy. Depress clutch. Slip trans into first. Tap throttle and bring the rpms up a bit so 1st doesn't act like a brake and skid the tires. Release clutch. Repeat as required. Even with an all synchro trans you'll find - once you develop the proper skills - the trans is easier to shift and you won't be forcing it into gear and the synchros will last a long time. Long as I'm on the soapbox, put the trans in neutral and release the clutch at stoplights. That will make the throwout bearing last a long time. As a comparison, my pal's stick shift later model half ton Chevy is at 100,000 miles and the third throwout bearing. My Ranger went 130,000 miles on the original throwout bearing. Doesn't have anything to do with Ford vs Chevy, just driving habits. Learn to double clutch and you can downshift smoothly into low on a non-synchro low gear 3 speed trans. In fact, you can shift gears up or down without the clutch if you have to. It is a valuable skill....
If he meant double clutch,it's bull ****.1/2,Chevys 3spds been synchro since the mid 1930's and the truck 4 spds since 1948.Of course maybe the synchros are worn...................
Definitely if the synchros are bad. My 57 had a three speed that needed it to shift, and it also would pop out of third. My O/T daily is a 95 2 dr Tahoe w/ a 5 speed with over 275,000 on it. It now requires double clutching for 3 to 4 change. It still runs great, but the ****** is a bit noisy
Really no need to double clutch anything or for that matter even to declutch once the vehicle is moving. Slip it into neutral and blip the throttle to proper rpm for downshifts or let the rpm fall off for upshifts, slip it into the next gear and do what ya gotta do. couple hundred thousand truck miles and the only time the clutch got pushed is for stopping and getting it into gear in the morning an after coffee. You are doing this when double clutching, just adding in a little clutch dance taking longer to make the shift. Synchros are for people that have the same coordination as a cub bear in boxing gloves.
EXACTLY!!!!!!!! I learned this in 1969, when I was 14, from the lady across the street from me in her 36 Ford. THANKS Angie. R.I.P.
Drove a wrecker for years on the night shift to make extra hot rod money. I used to make a game out of how few times I'd use the clutch on a run. Used to coast up to a stop light in neutral, shut off the engine, put the trans in first. When the light changed I'd touch the key and off I'd go, no clutch, accelerated to about 20 and let off the gas and go for second after a pause to let the rpm match the second gear speed. Repeat as needed. Down siffting required you to blip the throttle between the gears to match the higher rpm needed for the lower gear. Frank
i drive truck for a living... and i know i use the clutch once from a dead stop, just to get it moving, then i leave the clutch pedal alone till i gotta bring it to a stop again... why bother when you can shift just fine floatin' em in
Hahaha! So I was sorta right...it's just a movie anyways, but I am bad about the "correctness" of movie car stuff. Like on one of her other chick flicks two guys are driving down the road in a '70 Chev PU with the column shifter in park... stuff like that drives me insane. -John
Double clutching brings the clutch disc and ****** input shaft to crankshaft speed. Non-synchronized (dogshift) transmission shift better with this proceedure in the right hands. Floating the gears in a Roadranger big truck ****** is the way to drive one. Floating the gears in a synchronized transmission without using the clutch will cause premature wear on the facings of the synchronizer if the operator isn't dead on with his RPM's and shift points. I have fun selling transmissions and diagnosing repairs. FiddyFour wouldn't spend much money on repairs with his procedure, unless he shifts like me in a big truck.
c'mon guys - if it was in the script in a movie...it's BS...we all know that - there are tons of threads in here regarding the gaffes (that's MISTAKES for those of you in Rio Linda) that movie directors, script writers, and prop folks make on a regular basis. There's no such thing as double-pumping a clutch - and double clutching is only necessary (on a p***enger car) if you are down shifting while trying to slow down from a pretty healthy speed. What double clutching does is match up the rpm of the mainshaft with the cluster gear that you're getting ready to slip into the next slot. Large semi trucks generally have to double clutch up AND down because the gears are large - many are straight cut and there usually aren't any synchros in those multi-gear boxes. double-clutching p***enger cars is just for *****y peckers with large coffee-can single tailpipe accessories - they just love the sound of those weedeaters. dj
I am always driving my family nuts picking the errors in movies apart. My favorite error in a movie is in The Bridges of Madison County. The only part of that movie I liked is when Clint is driving and you plainly see a John Deere tractor with a sound guard cab and a Vermeer big round baler hooked to it going down the road. Those were not manufactured for years after the period of time that movie was set in.
If your Ranger has a hydraulic clutch (linkage) and his Chevy doesn't, then that might be the difference.
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