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Old 06-18-2017, 08:49 AM   #31 (permalink)
It's all about Diesel
 
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Originally Posted by JRMichler View Post
The original solution was a vacuum actuated clutch. Take foot off gas, clutch disengages. Step on gas, clutch engages. One foot operation.
But the need for a vacuum provision made it unsuitable to certain engines, mostly Diesels and some newer gassers that are resorting to direct injection and getting rid of the throttle plate, and the electronic controls fitted to those vacuum-actuated clutches is still quite complex and not so easy to work on the field. Anyway, when I mentioned cars with manual transmissions adapted for disabled drivers, I was actually refering to full-mechanical devices, such as this hand clutch lever fitted to a split-window Kombi by its owner who had the left leg amputated.



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Then automatic transmissions came along and became the preferred solution in the US. That did require shifting the gas pedal over to the left side for those who lost their right leg. I got my driver's license with a left foot accelerator.
There are some right leg amputees in my country who are using hand controls for brake and accelerator, since it's cheaper than a vacuum-operated clutch control and much easier to install. Even some truckers are resorting to this.


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My dad knew an amputee that drove a motorcycle.
Whenever I saw anybody with a disability riding a motorcycle, it had been converted into a tricycle. The only exception to that is my dad, who has a left leg disability but still can drive vehicles without adaptations, even though now that he's getting older he's starting to consider getting an automatic for his next car.

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Old 06-18-2017, 04:26 PM   #32 (permalink)
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Quote:
Originally Posted by JRMichler View Post
The original solution was a vacuum actuated clutch. Take foot off gas, clutch disengages. Step on gas, clutch engages. One foot operation.

Then automatic transmissions came along and became the preferred solution in the US. That did require shifting the gas pedal over to the left side for those who lost their right leg. I got my driver's license with a left foot accelerator.

My dad knew an amputee that drove a motorcycle.
That's pretty similar to the old Borg-Warner overdrive boxes, no?
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Old 06-19-2017, 03:38 AM   #33 (permalink)
It's all about Diesel
 
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Originally Posted by jcp123 View Post
That's pretty similar to the old Borg-Warner overdrive boxes, no?
I'd actually rather relate those auxiliary overdrive units to the dual-range feature of the transfer cases in 4WD vehicles, even though shifting between the ranges on a transfer case usually requires the vehicle to come to a stop (even when they're able to shift between 2WD and 4WD on-the-fly).
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Old 06-19-2017, 08:41 AM   #34 (permalink)
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Something tells me that the US automotive industry wasn't thinking helping amputees drive. It wasn't 'till the 1990s that we passed a law requiring wheelchair ramps and the like, and people still fight that "overregulation".

The carcos were just thinking about selling to idiots.
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Transmission type Efficiency
Manual neutral engine off.100% @MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%

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Old 06-20-2017, 01:58 PM   #35 (permalink)
It's all about Diesel
 
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Something tells me that the US automotive industry wasn't thinking helping amputees drive. It wasn't 'till the 1990s that we passed a law requiring wheelchair ramps and the like, and people still fight that "overregulation".

The carcos were just thinking about selling to idiots.
Sure the accessibility issue was not a priority for the auto industry in the '40s and '50s, but at least Oldsmobile had advertised that automatics were easier for wounded WW2 veterans and the polio victims to get them fitted with hand controls, since it didn't require any clutch control.
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Old 06-20-2017, 02:10 PM   #36 (permalink)
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Quote:
Originally Posted by cRiPpLe_rOoStEr View Post
Sure the accessibility issue was not a priority for the auto industry in the '40s and '50s, but at least Oldsmobile had advertised that automatics were easier for wounded WW2 veterans and the polio victims to get them fitted with hand controls, since it didn't require any clutch control.
I vaguely recall that GM-Olds advertising.
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Old 06-21-2017, 04:48 AM   #37 (permalink)
It's all about Diesel
 
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I vaguely recall that GM-Olds advertising.
Oldsmobile offered it as the "Valiant" hand controls. The vehicles fitted with them could get even vacuum-booster for the brakes before it became mainstream.

https://www.hemmings.com/magazine/hc...6/3739371.html

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