Hand crank start
I'm curios if you can hand crankstart:
1) And modern Gas petrol cal (fuel injection, computer control); 2) And Diesel automobile. I've seen some old "Mercedes" with mechanical injector (but still had electric pumps) but they needed some glowing plugs. |
Quote:
Diesel, I doubt it! Too high of a compression ratio. Most Diesel trucks and cars required two batteries because of the high starting current. My four cylinder Jeep Liberty required a special single battery because of the demand. |
IIRC you can still pop start manual transmission gasoline engine cars*. I don't think any maker is going to offer a crank in the USA these days 1.) the cars of the early part of the last century that did have cranks tended to break arms 2.) most members of my generation have lousy upper body strength (I've seen some so scrawny that they make me wonder how they cope with daily tasks).
*If the alternator is putting out enough voltage for spark to work then the computer is going to work too. |
1) Not on any car made since electric start was perfected. Not only is it dangerous, but a modern car wirh a dead battery won't be able to run properly anyways, and then there's the issue that in a modern front wheel drive car, where would the crank go? A hole in the fender?
2) Compression ratio of a diesel engine is way too high for crank start. If I rotate the crank of my toyota 2.4L diesel engine with a wrench, it takes way more force than a gas engine.. I don't think I could do it fast enough to actually start the engine. |
I thin 'Trarant' could be hand crank. "Dacia" 1300 and early 1310's (made after "Renault" 12) could be also hand crank.
|
I once had a Peugeot 403 which could be hand cranked.... this model was made up to the mid 1960s. I actually used the crank once on a winter day when the battery was too low to start the engine. The engine was about 1.5 liters, and started fairly easily after only a couple of cranks.
jr |
A lot of French cars, even into the 80s, had a hole for hand cranking. I'm sure you could crank most modern engines, even some of the larger ones, but especially on late late model cars, they won't permit a start unless the key is in the crank position. Why in the hell would you want to, though? You'd need a special tool anyway, or you'd break your arm. I suppose you could use a ratchet, but I'm a mechanic, I've had ratchets reverse on me all the time. Not to mention, you'd have no guarantee that the ignition timing wouldn't be advanced, and backfire, and break your arm. Push starting manual transmission cars is still a thing though. For how much longer? ...Eh.
Diesel? God no. |
What special tool? :worried:
The reason why? Maybe will not have some one to help push your car. |
Have had my 35 Ford for 49 years and only cranked it once, it is hard to crank a V8 as just when you get one cylinder over the next comes up.
|
I had a 1959 Citroen DS19 with a crank start provision, you inserted the lug wrench into a hole under the front bumper.. not many front wheel drive cars with crank start provisions. There was a lever under the dash that would mechanically engage the clutch for push starting too if i recall right. there was no clutch pedal, clutch was normally engaged by a centrifugal pump that was combined with the water pump.
|
Quote:
|
There have been so many times I am thankful I drive a 5 speed Ranger. If its not the battery , its the starter that has gone out.
I can always find a small hill around here to park it on, so I can roll start it. Sadly, I have heard the manufacturers are discontinuing manual transmissions since they now have automatics that are as efficient. |
@ MadMan : in Romania is not so easy to find an tow truck if you are in some rular areas.
|
Quote:
|
Quote:
Quote:
|
Quote:
Because of that however you are not the first person to wonder if you could add a crank start to a newer car. You would certainly need a release that would safely disengage the crank once the engine fires but on a small car like mine with the extra pulley for an optional AC compressor it's extremely tempting to try. |
@ MadMan : Hmm, thought you're talking about cars that can be cranckshaft when you mentioned to pull them.
Yes, a tractor can helf. And even horses. But a old autmatic transmision car can't be hand crankshaft? |
A friend of mine an 80s Lada that still had the hole in the in the block for crank, but I don't remember it coming with the actual crank. It probably would have worked - while the body had been updated I doubt anything else was newer than a 60s design - there were certainly no electronics in it.
|
To the OP: is this a theoretical question, or do you actually want to try it? The danger of hand cranking an engine, is kickback, when the engine starts and violently jerks the crank. A lot of people in the early 20th century got broken wrists from this, and there's a special open handed way to hold the crank to minimize the chance of this happening.
I have to say though, I don't know about you, but for me, my hands and wrists being in good shape basically determine my ability to work, and be financially solvent. I wouldn't want to risk them over a broken down car. Consider hand cranking an engine to be like asbestos insulation, or gasoline welding torches, or leaky steam boilers in houses, or using mercury to separate gold out of Ore. .. There's some things which are just too dangerous to your health do, no matter how traditional. It won't make anyone more of a man to be injured or dead in the course of a trivial activity like starting a car. |
Quote:
An interesting thing is you can roll start some early automatics. I hear they even described it in the owners manual. This ended in the early 60's IIRC. IIRC it needed to be moving at ~20MPH for it to work...Probably only practical on hills. |
@ maxhifi : I never tryed. I'm just curios.
|
Quote:
Quote:
|
i push or roll started a mazda GLC for months.. starter went out... I pumped the tires up to about 50 psi, as i had to push it myself on a level street. parked on a hill when i could, but i could get it started on the flat if necessary, then it snowed and i had to go out and finally replace the starter.. too hard to push it in the snow.
|
Quote:
|
Quote:
|
Quote:
|
Quote:
I use a 240V 5kW construction heater I picked up cheap at princess auto.. plugged into a 10AWG extension cord, which I run into the house through a basement window and plug into my electric dryer outlet. Total hack job yes, but that heater actually does make it tolerable in the garage. Especially if the heater is blasting at the general area of work. |
All times are GMT -5. The time now is 08:16 AM. |
Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
©Copyright 2012 VideoKarma.org, All rights reserved.