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Thread: Tank-corrected Fuel Sender for Classics

  1. #121
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    Dave,

    Remove the S lead from the gauge.
    Take an ohm reading from S to the Gnd terminal. Should be 300-500 ohms.
    Take a second reading from S to + terminal. Maybe in the 50-200 ohm range.

    Get me those readings and we can check the compatibility of your gauge.

    Bob
    Member - WAFNC
    1997 22 Classic (sold)
    1997 Formula 271 Fastech
    502 Mag MPI

  2. #122
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    Quote Originally Posted by daved View Post
    I did a search for sending units today and wow, lots of info here.
    I am looking for one for my 86'22 classic with vdo guages. Any chance of ordering one? If so, what is the lead time? Thank you, Dave
    Same here VDO- 87 22 Classic.
    If i remember there is an ohm rating under the round plastic sender top part.

    I'll try to get some more info..
    Thanks Ken
    [url]

  3. #123
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    Quote Originally Posted by DONZI View Post
    Same here VDO- 87 22 Classic.
    If i remember there is an ohm rating under the round plastic sender top part.

    I'll try to get some more info..
    Thanks Ken
    Sender is not the issue. There are some gauges that aren't as compatible as others.

    B
    Member - WAFNC
    1997 22 Classic (sold)
    1997 Formula 271 Fastech
    502 Mag MPI

  4. #124
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    I come up with
    289 to GND,
    162 to POS.
    Thanks Ken !
    [url]

  5. #125
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    Quote Originally Posted by DONZI View Post
    I come up with
    289 to GND,
    162 to POS.
    Thanks Ken !
    I emailed the manufacturer to check compatibility. I should here from him by late today and will get back to you with the results.

    B
    Member - WAFNC
    1997 22 Classic (sold)
    1997 Formula 271 Fastech
    502 Mag MPI

  6. #126
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    Quote Originally Posted by DONZI View Post
    I come up with
    289 to GND,
    162 to POS.
    Thanks Ken !
    Ken,

    According to the manufacturer, your gauge is not compatible with this sender. There are some VDOs that won't register properly due to their internal resistances.

    Bob
    Member - WAFNC
    1997 22 Classic (sold)
    1997 Formula 271 Fastech
    502 Mag MPI

  7. #127
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    As I was looking at senders and gauges for my project, I saw that most senders are 240 ohms full, 33 ohms empty, but there was usually an asterisk referencing VDO gauges requiring a special sender.
    “Oh right, because you walked into strippers discount warehouse and said ‘Help me showcase my intellect.’” - Archer

    Bill
    Grand Rapids, Michigan
    1985 Donzi Criterion SS
    1967 Donzi 16 Ski Sporter, C16-409, Has a new home!
    38' Carver Aft Cabin
    1968 Sea Ray SRV 180 w/1975 70 hp Evinrude
    10" RIB w/15 hp 1984 Evinrude

  8. #128
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    Quote Originally Posted by Tidbart View Post
    Ken,

    According to the manufacturer, your gauge is not compatible with this sender. There are some VDOs that won't register properly due to their internal resistances.

    Bob
    Thank you for ck'ing for me Bob !
    If you can recommend a simple gauge from Hardin Marine,CP Performance,Eddie Marine or one of the other online sites that will work for the 87 22 fuel tank with your sender .I would like to purchase a unit from you w/gasket.
    I'll just mount under dash till i replace all gauges.
    Thanks again !
    Ken
    [url]

  9. #129
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    Quote Originally Posted by DONZI View Post
    Thank you for ck'ing for me Bob !
    If you can recommend a simple gauge from Hardin Marine,CP Performance,Eddie Marine or one of the other online sites that will work for the 87 22 fuel tank with your sender .I would like to purchase a unit from you w/gasket.
    I'll just mount under dash till i replace all gauges.
    Thanks again !
    Ken

    Ken,
    Here is a list of compatible gauge companies.

    DATCON
    LIVORSI (or gaffrig newer than 1996)
    OMC
    STEWART WARNER
    TELEFLEX
    US GAUGE

    AUTOMETER 3316/3516
    FARIA
    VDO (some)

    And a list of Non-compatible gauge companies:

    westach
    gaffrig older than 1996
    tempo
    vdo (some)
    rochester
    wema

    yamaha bargraph



    If you decide which company you are going with to replace all of them, buy the fuel gauge now and the rest later.

    Bob
    Member - WAFNC
    1997 22 Classic (sold)
    1997 Formula 271 Fastech
    502 Mag MPI

  10. #130
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    Please read all this info, if you are interested in ordering on of these.

    Bob


    Quote Originally Posted by Tidbart View Post
    Electronic Programmed Fuel Sending Unit

    As some of you know, I have been working on the programming for an electronic sending unit. The intent of the project has been to come up with one design that can be utilized in several different tank styles that have been used in certain Donzis throughout the years. In other words, these will correct for the odd-shape of the Classic’s tanks. You will get an accurate reading throughout the range of your fuel gauge.
    Well, I have just finished working with the manufacturer on the programming aspects and am in the process of placing and order. Some pertinent info on the sender is listed below.

    Information and Highlights

    • Continuous readout
    • No field trimming
    • No moving parts
    • 2 Terminal, no battery lead needed to the sender
    • 12 volt
    • Compatible with most 230/33 ohm gauges See below for list
    • 5 hole SAE pattern
    • Gasoline only
    • Water Indication, meter will peg to above full when water hits the probe
    • Rugged and Reliable
    • 2 Year Manufacturer’s Warranty


    Compatible gauge manufacturers
    Datcon, Livorsi, Gaffrig (newer than 1996), OMC, Stewart Warner, Teleflex, US Gauge, Autometer (3316/3516)

    VDOs are questionable. I will have to check with manufacturer. Some of VDO gauges are wired backwards from standard meters. I checked with manu last night and the 1996, 1997 VDOs should be compatible. Don't know what other years they were used. Check with me in advance and we can perform a compatibility check to verify compliance.

    Incompatible manufacturers
    Westach, Gaffrig (pre-1996), Tempo, some VDOs, Rochester, Wema, Yamaha

    Compatibility check
    Remove the leads from the back of your existing gauge. Ignore the wiring for the light.
    Take an ohm reading from S to the Gnd terminal. Should be 300-500 ohms.
    Take a second reading from S to + terminal. Maybe in the 50-200 ohm range.
    Get me those readings and we can check the compatibility of your gauge.


    Most-Compatible Tanks
    These are not all, but the best of the tanks I have check so far. I will check any other tank if you have the dimensions or drawings. These are mostly a classic style tank with tapered sides and a varying bottom width and 9.5-11 inch depth.

    Older 22, 88-93, Alum, 55g, Accuracy > 99%
    Newer 22, 93-98, Alum, 55g, Accuracy > 99%
    Newest 22, 99-??, Plastic, 52 g, Accuracy > 99%
    18C and 20C, Years??, Alum, 41g, Accuracy > 99%
    Hornet, Alum, 60g, Accuracy > 96%

    Accuracy is in relation to the design curve.

    Incompatible tanks
    16 and 18, 25 gallon tanks from the 70’s.

    Like I said, get me some boat information, a drawing, or dimensions, and I will check to see if you tank will work. I have a limited amount of information on all the tanks throughout the years.

    Comparison curves for your tank will be supplied upon request, if I have it.

    Pricing
    I got the price down as best that I could with the amount that I ordered. These came in at $75.00 each, and shipping. My guess is that shipping will be about $10 for the lower 48. So, let’s call it $85.00 shipped, and be done with it. I am not in this to make money so, if this goes well, I will try to get a lower price on future orders, no promises. \

    Options
    I now have some options for your convenience.
    (5) #10-32 x 1.25" Machine screws and washers for $2.00 None are included with the sender.
    (1) Neoprene gasket for $3.00 The sender comes with a Buna-N Cork gasket.

    Shipping
    This original will be available in 2-3 weeks from now. Not sure of the date yet.
    I will ship as soon as they become available to me.

    Payment
    I will take a check or money order.
    Mail to:
    Robert Wilson
    1203 Pinar Dr.
    Orlando, FL 32825

    Or Paypal. If doing Paypal, use the Personal/Other tab to send a payment to tidbitnh@yahoo.com. Funds from bank account or Paypal balance only. No credit cards, I am not paying the fees.

    Any questions, call me at 321-436-5704 or email on the link under my name.

    Thanks, Bob (Tidbart)
    Member - WAFNC
    1997 22 Classic (sold)
    1997 Formula 271 Fastech
    502 Mag MPI

  11. #131
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    Bob,
    Just wanted to say thanks for taking this on and making it available to others. My wife asked for Christmas gift suggestions last fall and this was one of them. The boat was in storage when I got the present. I just installed the sender last week before season launch. I'm really looking forward to having accurate fuel readings this year. I admit that I ran out of gas a few years ago, early evening with no one else on the lake. Makes for a good memory now, but at the time...
    Incidentally, the threads on my fuel tank were #10-24, so I had to make a trip to the local hardware store during installation. I would have anyway, as the fuel sender access in my tank is offset from the access cover, and the Phillips screws would have been tough to install - a shorty screwdriver would not fit, but Allen wrenches did. So I bought and used hex head cap screws instead.

  12. #132
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    Quote Originally Posted by DickB View Post
    Bob,
    Just wanted to say thanks for taking this on and making it available to others. My wife asked for Christmas gift suggestions last fall and this was one of them. The boat was in storage when I got the present. I just installed the sender last week before season launch. I'm really looking forward to having accurate fuel readings this year. I admit that I ran out of gas a few years ago, early evening with no one else on the lake. Makes for a good memory now, but at the time...
    Incidentally, the threads on my fuel tank were #10-24, so I had to make a trip to the local hardware store during installation. I would have anyway, as the fuel sender access in my tank is offset from the access cover, and the Phillips screws would have been tough to install - a shorty screwdriver would not fit, but Allen wrenches did. So I bought and used hex head cap screws instead.
    Thanks for the feedback, Dick. Funny, hadn't heard about a thread issue. Until today. You and another owner with a plastic 22 tank. I think I assumed they would all be the same since the bolt pattern has been standardized for ages..... Sorry about that. Owe you a beer.

    Now I will know to ask. Hope it works well for you.

    Bob
    Member - WAFNC
    1997 22 Classic (sold)
    1997 Formula 271 Fastech
    502 Mag MPI

  13. #133
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    TTT for senders........
    1972 16 OB - C16B-63 - "Surface Tension" Resto Project
    1974 16 OB - DMR16106017-B - "The Mule"

  14. #134
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    Currently, I have 2 senders left. If anyone needs one, speak now or forever..........

    Bob
    Member - WAFNC
    1997 22 Classic (sold)
    1997 Formula 271 Fastech
    502 Mag MPI

  15. #135
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    Thumbs up Bob

    Ill take one, complete kit, 02 18c with gaffrig gauges. PM Me $ amount and address. Michael

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