I currently have one of the green knob battery dis-connect switches and it does an "ok" job. At least it turns off the electric( I hope ). I have been reading old discussion board archives and there was a lot of discussion about a " knife" dis-connect called a Wirth Knife dis-connect. I saw an ad in Driveline called Savety Switch. Is there a difference or is it one in the same? If there is a difference, is the Wirth knife seem better? What does anyone recommend ? Any ideas on costs ? Appreciate the imput.
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Re: Battery Dis-connect
I use the green knob type on my cars with no problems at all. You have to tighten the knob firmly. To me, they are neater in appearance than the other type. -
Re: Battery Dis-connect
I use the green knob type on my cars with no problems at all. You have to tighten the knob firmly. To me, they are neater in appearance than the other type.Comment
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Re: Battery Dis-connect
I have tried both on my 72 and I much prefer the Savety Switch that I now use. It makes a more positive connection, imo. I used to really have to crunch down on the green knob device and I just didn't like it as much. The knife blade type is either in contact or it is not.
GaryComment
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Re: Battery Dis-connect
I have tried both on my 72 and I much prefer the Savety Switch that I now use. It makes a more positive connection, imo. I used to really have to crunch down on the green knob device and I just didn't like it as much. The knife blade type is either in contact or it is not.
GaryComment
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Re: Battery Dis-connect
I use the "green knob" switch. I don't just turn it to break the contacts, I unscrew and remove the knob. With the knob removed the car can't be easily started. With the "knife blade" types the thief would just reset the lever and start up the car and drive off.
RogerComment
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Re: Battery Dis-connect
I use the "green knob" switch. I don't just turn it to break the contacts, I unscrew and remove the knob. With the knob removed the car can't be easily started. With the "knife blade" types the thief would just reset the lever and start up the car and drive off.
RogerComment
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Both
types of switches are made by the same company (WirthCo). The green 'wonder' is their low end product that retails in the $15 range. The knife switch is their intermediate product retailing in the $30 range. They also offer SCAA sanctioned switches if you're into the $100 range and want a big Kahuna protruding from exterior body parts....
Those extolling the 'green wonder' have all said the right thing (with NO tactile feedback for open/closed; they either remove the knob altogether or torque it down with Gorilla strength) and under these consistent useage conditions it ought to work, mon.... The difference between the two is effective contact surface area and switching media.
The green wonder, is borderline in effective switch contact surface area (compare to the size of your battery post/terminals). Plus, one side of the contact is solid brass (hex head screw embedded in the green plastic knob) while the other side is thinly copper plated. Doesn't take too many open/close actuations before you can kiss the copper plate bye bye. But, for tailer queen applications and judicious driving use (remove the screw-in knob and periodically inspect the contact surfaces for wear + torque down with gorilla strength), the green knob baby WILL work....
The knife switch is brass against brass with a firm tactile feedback as to switch open/close position. It's a 2:1 cost delta, and the decision is subjective. BUT, having seen three chapter members who 'lost it' on the road, at speed, with 'green wonder' units + being an electrical engineer and former engineering VP, I'd NEVER recommend one of these switches PERIOD! Am I biased, Hell yes!!!Comment
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Both
types of switches are made by the same company (WirthCo). The green 'wonder' is their low end product that retails in the $15 range. The knife switch is their intermediate product retailing in the $30 range. They also offer SCAA sanctioned switches if you're into the $100 range and want a big Kahuna protruding from exterior body parts....
Those extolling the 'green wonder' have all said the right thing (with NO tactile feedback for open/closed; they either remove the knob altogether or torque it down with Gorilla strength) and under these consistent useage conditions it ought to work, mon.... The difference between the two is effective contact surface area and switching media.
The green wonder, is borderline in effective switch contact surface area (compare to the size of your battery post/terminals). Plus, one side of the contact is solid brass (hex head screw embedded in the green plastic knob) while the other side is thinly copper plated. Doesn't take too many open/close actuations before you can kiss the copper plate bye bye. But, for tailer queen applications and judicious driving use (remove the screw-in knob and periodically inspect the contact surfaces for wear + torque down with gorilla strength), the green knob baby WILL work....
The knife switch is brass against brass with a firm tactile feedback as to switch open/close position. It's a 2:1 cost delta, and the decision is subjective. BUT, having seen three chapter members who 'lost it' on the road, at speed, with 'green wonder' units + being an electrical engineer and former engineering VP, I'd NEVER recommend one of these switches PERIOD! Am I biased, Hell yes!!!Comment
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Don't hold back, Jack -
tell us how you really feel.
Gary
ps, yeah, what he said!Comment
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Don't hold back, Jack -
tell us how you really feel.
Gary
ps, yeah, what he said!Comment
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Re: Both
I agree with Jack. I had one of the green knob switches on my car and took it off. It was too difficult to maintain a good connection with it.Comment
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Re: Both
I agree with Jack. I had one of the green knob switches on my car and took it off. It was too difficult to maintain a good connection with it.Comment
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Re: Both
I have the green knob one's on my 72 vette and my iroc-z prostreet and my old camaro. I have turned the battery on and off with the knob hundreds of times and had not one conection problem. EricComment
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Re: Both
I have the green knob one's on my 72 vette and my iroc-z prostreet and my old camaro. I have turned the battery on and off with the knob hundreds of times and had not one conection problem. EricComment
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