Hello Terry, I had a bit of a look arround for adjustable regulators, and I found one, the LM317T which goes for arround the $2-3 mark ($2.60 out of a 1999 jaycar catalogue). It only needs a handful of support components to make a fully adjustable 1A or so regulator, over about 1.2 - 11v off a standard 13.8v battery. If you are still looking at this problem, I will do up some quick circuit diagrams, diagrams for how to make it on veroboard (once again, pretty cheap), etc and whack it up on an FTP site, maybe if this is a reasonably common problem then other list members could use it as well (it could also be used for things like light dimmers etc). Anyone got a site that I could put it on? Or maybe if I talked to the ozdat.com owner they wouldnt mind, it would go neatly in the tech section.
Saturday, February 16, 2002, 10:08:35 AM, you wrote: TR> Bob, TR> AFAIK to resistance in either of the senders is linear, but as I see it TR> that's not the main problem. The problem is the different voltages being TR> applied to the gauge regulators in the 1600 pod and the 200B pod. You see TR> the tank sender units go in the opposite direction to the read out on the TR> gauge, i.e. 0 ohms @ 5v on the 1600 sender reads Full on the 1600 gauge, and TR> 15 ohms on the 200B sender @ 5v reads a little over 1/2 on the 1600 gauge. I TR> sent off an email to a friend in the US that i've spoken to in the past TR> about this problem. What he did is to disconnect the fuel gauge in the 1600 TR> pod from the stock voltage regulator and bought a new regulator from Tandy, TR> wired it all up and it works. TR> This is what he wrote: TR> Hi, TR> To replace the stock 510 regulator use Radio shack cat. No. 276-1770A TR> This is a + 5vdc Voltage Regulator 1 Amp. If you need a + 3vdc reg then look TR> up the cat No. and they also stock a variable +-5vdc unit that's a lot more TR> expensive. Disconnect the original, and remove the heat style regulator, TR> (the insulator board thing) drill a small hole in the metal cover to attach TR> the radio shack unit. Solder a wire to the "in" side of unit to the " IGN" TR> 12V plug. Solder in a wire to the "out" terminal of the unit to the "panel" TR> plug. The center terminal is to chassis ground. I didn't need to hook up TR> the ground because it was getting ground from somewhere else. TR> Try not to use to much heat to unit during soldering or you could TR> damage new unit. Plug it back in - works great and costs less than TR> $2.00. Hope this works for you:>) TR> The panel plugs he's talking about are the Fuel sender (Pin 7) and the Temp TR> sender (Pin 4) TR> I'm sure the stock reg replacement if we can get it will cost a few $ more TR> than $2 here. TR> I think with a little bit of electronics skill you could make something up TR> yourself that's adjustable for very little cost. TR> regards TR> Terry TR> -----Original Message----- TR> From: [EMAIL PROTECTED] TR> [mailto:[EMAIL PROTECTED]]On Behalf Of Bob - Uni TR> Sent: Tuesday, 5 February 2002 2:27 PM TR> To: [EMAIL PROTECTED] TR> Subject: Re[2]: 200B fuel tank in 1600 fuel gauge calibration? TR> Hello Terry, TR> Is the resistance linear in both the senders? ie, at half tank the TR> resistance is halfway through the range? If so, then I should be able TR> to tell you how to "recalibrate" the 200B sender to provide the same TR> resistance scale as the 1600 sender using 2 resisters, total cost TR> would be about 20c from any electronics store, and you could use the TR> fuel tanks present sender. TR> Tuesday, February 05, 2002, 1:12:55 AM, you wrote: TR>> Richard, TR>> I've done this on a 1600 a long time ago and I've been talking directly TR> to TR>> Chris but as I cant find the tech info on how I did this last time due TR> to a TR>> HDD blow up some time back and I lost a lot of stuff. I'll paste where TR> we're TR>> up to but I could do with some help from the list. TR>> The 180B sender idea just might work with a 1600 gauge without all the TR>> frigging around getting a 200B sender to work accurately. Do you know TR> what TR>> voltage a 180B dash pod runs at and also what is the resistance range of TR> a TR>> 180B sender. It just may be the same as the 1600 and that leads me to TR> think TR>> that this route just may be a better solution than trying to figure out TR> how TR>> to get around the complexity of the 1600 gauge/200B sender problem. TR>> Pasted for info >>> I'll have to give this some more thought - first impressions of the >>> problem at hand is that a 200B gauge and sender wont work in a 1600 - >>> the 1600 pod voltage is 5v and the sender is 0-100 ohms. A 200B pod >>> voltage is only 3v and the sender resistance is something like 15-85 >>> ohms so you see the problem. I'm not sure about the temp gauge sender >>> on the 200B either so you could fix the fuel sender and frig the temp >>> sender, there were at least 2 (VDO & Niles). >>> >>> I think using the 200B sender with a resister, probably adjustable is >>> the go with the stock 1600 gauge. >>> >>> I'll be back >>> >>> TR TR>> regards TR>> Terry TR>> -----Original Message----- TR>> From: [EMAIL PROTECTED] TR>> [mailto:[EMAIL PROTECTED]]On Behalf Of Richard Clough TR>> Sent: Monday, 4 February 2002 10:23 PM TR>> To: [EMAIL PROTECTED] TR>> Subject: Re: 200B fuel tank in 1600 fuel gauge calibration? TR>> Chris, TR>> I cant answer your gauge problem but have you tried it? 180B tank TR> sender TR>> units work fine with a 1600 gauge. If your not keen to connect it in the TR>> tank, remove the sender unit from the tank and connect to the wiring TR> loom TR>> and earth. Operate the float arm and see if the gauge registers TR> correctly TR>> over the travel of the sender unit arm. Do it slowly as the gauge is TR>> designed to move slowly to avoid wild fluctuations. TR>> Can you give us description of how you fitted the bigger 200B tank and TR> fuel TR>> filler, a few listers have been thinking of trying this for the larger TR>> range. TR>> ----- Original Message ----- TR>> From: "Chris Williams" <[EMAIL PROTECTED]> TR>> To: <[EMAIL PROTECTED]> TR>> Sent: Friday, 25 January 2002 9:54 AM TR>> Subject: 200B fuel tank in 1600 fuel gauge calibration? >>> Hi All, >>> I have recently put a 200B fuel tank in my 1600 and was woundering how TR>> to >>> calibrate the fuel guage as I was told it would read on about half way TR>> when >>> it is full. >>> >>> Regards >>> >>> Chris W >>> >>> >>> -- Best regards, Bob mailto:[EMAIL PROTECTED] --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
