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I say you need the CVR. Why would Ford use them only on a 12V system and not 6V if it just handled voltage spikes. Generators are known to spike more than an alternator. I've hooked up a digital voltmeter up to a CVR and it puts out 5-6V.
Can't consider myself knowledgeable enough to have an opinion, the Runtz inventor says they're 6V. Course he sells a lot of his toys that way....
the thing I noticed was the sideways snotty comment about FTE being the Ford experts "according to them"....twerps!! Collectively, my buddies ARE the world experts on these old trucks!
Steward, I am at the point of finishing the inside now. I need to know if any local part stores would sell these or are they only available from runtz? I will have to see if they can send them out with saturday delivery by my fedex account if they are. I will wire up the turn signals today after my dads small family only service. I am going to take the weekend off to finish my truck. I will look back for your answer in a little while. Its off to shower and into the restaurant to put bills and paper work in.
I'm not sure what you've got locally. I don't think any of the chains like NAPA would carry them, (you could check), but you would probably have better luck with a hot-rod type shop. I know they're really commonly used and sold retail at lots of places. The other option would be to do a CVR, which I'm told you can get at NAPA for $20. You could even do that now then upgrade to Runtz later when they're available to you/if you need to. The CVR's were good enough for Ford for years, I'm probably just being a priss with the Runtz. Good luck with the weekend, don't wear yourself out, get some rest if you can.
I'm not convinced it's an upgrade to go with Runtz anyway. Performance is the same, but it takes only one CVR for all three gauges compared to needing 3 Runtz....?
Steward's quote: "the thing I noticed was the sideways snotty comment about FTE being the Ford experts "according to them"....twerps!! Collectively, my buddies ARE the world experts on these old trucks! "
After they said I didn't know nuttin' I just backed off to watch the show
There's a good chance they're right about that - but who let the cat out of the bag?
I'm not convinced it's an upgrade to go with Runtz anyway. Performance is the same, but it takes only one CVR for all three gauges compared to needing 3 Runtz....?
Steward's quote: "the thing I noticed was the sideways snotty comment about FTE being the Ford experts "according to them"....twerps!! Collectively, my buddies ARE the world experts on these old trucks! "
After they said I didn't know nuttin' I just backed off to watch the show
There's a good chance they're right about that - but who let the cat out of the bag?
Runtz must have retired off the money he makes selling them for $20 each and you need 3 per truck?? 20 cents worth of electronic.
I'd like to figure out who Lakota is on this site, and dig up the thread. I don't doubt he could have gotten a bum steer, if it was buried in a thread about spark plugs or something. This whole topic has been beaten to death across the whole internet!
Edit: I did a search, he's Lakota on here too, but no threads on instruments came up. Most were about fitting a Chev 350 into his F-1....
Last edited by ALBUQ F-1; May 4, 2007 at 10:33 AM.
I believe the Runtz IS an upgrade, albeit a likely unneccessary one. If the explanations I've been given about how the CVR works, it's darned crude. The Runtz are solid state electronics and control things MUCH tighter. You're right, they're a few cents worth of electronics...
Ford's CVR works the same way as how a voltage regulator controls an alternator. It turns on and off to get an average voltage of about 6v. Where as a voltage regulator just turns the alternator's field on and off to get an average voltage of 14-15v. There are many things that are controlled this way, injectors, solenoids, egr valves etc. It's called pulse width modulation or duty cyle.
Your fancy Runtz guages do the exact same thing but maybe slightly faster. The CVR is mechanical and the Runtz is electrical. I would say the CVR is "tougher" than the Runtz since it can power all the gauges and would most likely survive some voltage spikes where as transistors die.
You have to remember it is hard to create a perfect DC voltage. If you hooked up a lab scope you would notice that the line has many ripples. It takes very expensive equipment to make a "perfect" DC voltage.
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