The Ford Barn

Veeder · 11-27-2021, 07:55 AM

Any strong recommendations for a new gas 4ank sending unit?

FortyNiner · 11-27-2021, 08:58 AM

Yes, don't expect any of the reproduction units to work with the original gauge.

deuce_roadster · 11-27-2021, 09:53 AM

All the 6v electric tank units (35 or 6 to 55 or 6) have the same top, only the float arm is different. You can usually take the top off and clean the points and a non-working one will come back to life. I posted a chart in my MISC photo album that comes with a NOS unit as to how to bend the arm if yours is missing. I can send you a higher resolution copy as a PDF file if you PM me your email address if you need or would like to have it.

Veeder · 11-28-2021, 08:32 AM

Just sent you my contact inf that you!!!

19Fordy · 11-28-2021, 09:17 AM

Veeder: If you still have the old unit, check the float for hairline cracks that allow gas to seep in and give false readings. Do a SEARCH on GAS TANK SENDING UNITS. It's interesting to see what others have encountered re: repairs.
https://www.fordbarn.com/forum/searc...rchid=25778192

fordor41 · 11-29-2021, 10:54 PM

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I installed a sender from Yogi's street rods (10- 70 something ohm) in my '41. was a 6 bolt rather than 5, I believe, to fit my aftermarket tank. If you're using a stock tank it would not be hard to fab a plate that goes from 5-6 . I used a 12-6V electronic reducer ( I had changed to 12V) and it registered fine with my stock '41 gauge. E was empty, F was full

19Fordy · 11-30-2021, 09:33 AM

fordor: Thanks for posting about that aftermarket sending unit. Were the gauge readings between FULL and EMPTY accurate also? Plus, do you know how much gas was left in the tank when the gauge registers EMPTY? Thanks.

fordor41 · 11-30-2021, 11:14 PM

I really didn't care about 1/4, etc, just E & F. When at E, it would take about 16 Gal + or -.
BTW I couldn't find a Ford sender on Yogi's website

Veeder · 12-29-2021, 08:48 PM

Well here are my plans
1 The tank is in tough shape purchased a new (bob drake) replacement and aftermarket sensor. I did take the old sensor out cleaned it up (filed points) and seems to be working well. SO I hope to get the tank boiled out and sealed then stored with the original sensor for some person if they ever want to make this perfectly stock.

The issue I have {all though not critical) is the new gauge has a resistance range of 11.5 ---101.36 ohms ( Straight resistance based sensor technology). The stock ford gauge is apparently between 10-73 ohms however it is not a simply design but very interisting it was fun understanding it.

I did some tests today and I think if I place a 70 ohm resistor to ground from the new sensor it will give me the best average accuracy across the entire spectrum of the tank.

HAS ANYONE EVER DONE THIS IS THE QUESTION??

19Fordy · 12-29-2021, 11:26 PM

"I did some tests today and I think if I place a 70 ohm resistor to ground from the new sensor it will give me the best average accuracy across the entire spectrum of the tank."

The 1941 OEM Ford gauge does not work on the OHMs principle and will not give accurate readings with any modern aftermarkt gas tank sending unit that operates on the OHMs principle.

However, please do let us know how your 70 ohm idea works oput. I do hope your idea works although I don't know what "average accuracy" means. We need 'real time" on the spot accuracy.

fordor41 · 12-30-2021, 12:07 AM

Quote:

Originally Posted by 19Fordy

I did some tests today and I think if I place a 70 ohm resistor to ground from the new sensor it will give me the best average accuracy across the entire spectrum of the tank.

The 1941 OEM Ford gauge does not work on the OHMs principle and will not give accurate readings with any modern aftermarkt gas tank sending unit that operates on the OHMs principle.

However, please do let us know how your 70 ohm idea works oput. I do hope your idea works although I don't know what "average accuracy" means. We need 'real time" on the spot accuracy.

I don't get it! If a fuel gauge reads true E and true F who cares if 1/4,1/2 or 3/4 are accurate? Has anyone checked that accuracy of their 2000 something to see if it is accurate thru the entire range. I don't care what anyone says about 10-73 ohm senders with a stock gauge. Mine operated perfectly on 6V!

JayChicago · 12-30-2021, 01:10 AM

I found by trial and error that the replacement sender in my car needed a 7 ohm resistor (not 70 ohm!) to get the gauge to read accurately at empty.

And then it is only accurate near empty, not full range. With full tank the needle stays pegged until tank is about 3/4 full, then starts coming down. But as mentioned above, accuracy is not important up there. I only care about accuracy when I have to start thinking about how far to the next gas station.

19Fordy · 12-30-2021, 10:45 AM

It's good to know how many gallons of gas you have left in your tank when the needle reads 3/4, 1/2 ,1/4 and E because it provides you with an estimate of how many more miles you can drive,especially if gas stations are few and far between.

Having your gauge read accurately gives peace of mind. Who prefers a gauge that reads 1/4 tank left one minute and then the next minute the needle drops like a rock to E and your running on fumes?

Anteek29 · 12-30-2021, 10:47 AM

Fortunately, I found an NOS sender on ePay for my '41. Was a bit pricey but now I can rely on what the gauge indicates.
Otherwise, your mileage may vary...

19Fordy · 12-30-2021, 10:53 AM

Anteek, Smart move. Whatever you paid for that 1941 NOS unit, the price was right.
It was worth it. They are very hard to find.

TJ · 12-30-2021, 11:07 AM

Quote:

Originally Posted by Veeder

Well here are my plans
1 The tank is in tough shape purchased a new (bob drake) replacement and aftermarket sensor. I did take the old sensor out cleaned it up (filed points) and seems to be working well. SO I hope to get the tank boiled out and sealed then stored with the original sensor for some person if they ever want to make this perfectly stock.

The issue I have {all though not critical) is the new gauge has a resistance range of 11.5 ---101.36 ohms ( Straight resistance based sensor technology). The stock ford gauge is apparently between 10-73 ohms however it is not a simply design but very interisting it was fun understanding it.

I did some tests today and I think if I place a 70 ohm resistor to ground from the new sensor it will give me the best average accuracy across the entire spectrum of the tank.

HAS ANYONE EVER DONE THIS IS THE QUESTION??

I bought a Drake tank sometime back and it had two sets of holes for the sender. One set was for the original sender and the other for a late sender. Does your new tank have both sets of holes? If so, put the old sender in the new tank.

mercury 48 · 12-31-2021, 03:15 PM

I have a ford nos gas sender .1941 ford gas gauge would like to set sender arm to full and empty.E mail [email protected].

hubercats · 12-31-2021, 03:57 PM

@JayChicago: Out of curiosity, did you place the 7 Ohm resistor in series with the gauge or in parallel? My gut instinct suggests placing it in series. Thanks!

Veeder · 12-31-2021, 08:45 PM

Messed with a variety of resistor configurations today it appears that a resistor in series of a value between 2.2 --2.5 ohms does the trick. I do think that each car will end up being slightly different. I'LL do a bit more testing within the next couple of weeks to confirm. However for my car it's looking like 2.3 ohms in series does the trick.

inkandfable · 12-31-2021, 11:46 PM

Just sent you my contact inf that you!!!

11-27-2021, 07:55 AM	#1
Veeder Senior Member Join Date: Dec 2012 Location: CT Posts: 394	41 ford car stock gas tank sending unit - recommendation Any strong recommendations for a new gas 4ank sending unit?

11-27-2021, 08:58 AM	#2
FortyNiner Senior Member Join Date: May 2012 Location: u-rah-rah-Wisconsin Posts: 1,136	Re: 41 ford car stock gas tank sending unit - recommendation Yes, don't expect any of the reproduction units to work with the original gauge. __________________ 19 and 49 F1 - jes' like Henry II built 1946 Deluxe - as Henry built it

11-27-2021, 09:53 AM	#3
deuce_roadster Senior Member Join Date: Oct 2011 Location: Shelton, WA Posts: 3,799	Re: 41 ford car stock gas tank sending unit - recommendation All the 6v electric tank units (35 or 6 to 55 or 6) have the same top, only the float arm is different. You can usually take the top off and clean the points and a non-working one will come back to life. I posted a chart in my MISC photo album that comes with a NOS unit as to how to bend the arm if yours is missing. I can send you a higher resolution copy as a PDF file if you PM me your email address if you need or would like to have it.

11-28-2021, 08:32 AM	#4
Veeder Senior Member Join Date: Dec 2012 Location: CT Posts: 394	Re: 41 ford car stock gas tank sending unit - recommendation Just sent you my contact inf that you!!!

11-28-2021, 09:17 AM	#5
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,925	Re: 41 ford car stock gas tank sending unit - recommendation Veeder: If you still have the old unit, check the float for hairline cracks that allow gas to seep in and give false readings. Do a SEARCH on GAS TANK SENDING UNITS. It's interesting to see what others have encountered re: repairs. https://www.fordbarn.com/forum/searc...rchid=25778192

11-29-2021, 10:54 PM	#6
fordor41 Senior Member Join Date: Oct 2011 Location: elmira,ny Posts: 1,516	Re: 41 ford car stock gas tank sending unit - recommendation Sponsored Links (Register now to hide all advertisements) I installed a sender from Yogi's street rods (10- 70 something ohm) in my '41. was a 6 bolt rather than 5, I believe, to fit my aftermarket tank. If you're using a stock tank it would not be hard to fab a plate that goes from 5-6 . I used a 12-6V electronic reducer ( I had changed to 12V) and it registered fine with my stock '41 gauge. E was empty, F was full

11-30-2021, 09:33 AM	#7
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,925	Re: 41 ford car stock gas tank sending unit - recommendation fordor: Thanks for posting about that aftermarket sending unit. Were the gauge readings between FULL and EMPTY accurate also? Plus, do you know how much gas was left in the tank when the gauge registers EMPTY? Thanks.

11-30-2021, 11:14 PM	#8
fordor41 Senior Member Join Date: Oct 2011 Location: elmira,ny Posts: 1,516	Re: 41 ford car stock gas tank sending unit - recommendation I really didn't care about 1/4, etc, just E & F. When at E, it would take about 16 Gal + or -. BTW I couldn't find a Ford sender on Yogi's website

12-29-2021, 08:48 PM	#9
Veeder Senior Member Join Date: Dec 2012 Location: CT Posts: 394	Re: 41 ford car stock gas tank sending unit - recommendation Well here are my plans 1 The tank is in tough shape purchased a new (bob drake) replacement and aftermarket sensor. I did take the old sensor out cleaned it up (filed points) and seems to be working well. SO I hope to get the tank boiled out and sealed then stored with the original sensor for some person if they ever want to make this perfectly stock. The issue I have {all though not critical) is the new gauge has a resistance range of 11.5 ---101.36 ohms ( Straight resistance based sensor technology). The stock ford gauge is apparently between 10-73 ohms however it is not a simply design but very interisting it was fun understanding it. I did some tests today and I think if I place a 70 ohm resistor to ground from the new sensor it will give me the best average accuracy across the entire spectrum of the tank. HAS ANYONE EVER DONE THIS IS THE QUESTION??

12-29-2021, 11:26 PM	#10
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,925	Re: 41 ford car stock gas tank sending unit - recommendation "I did some tests today and I think if I place a 70 ohm resistor to ground from the new sensor it will give me the best average accuracy across the entire spectrum of the tank." The 1941 OEM Ford gauge does not work on the OHMs principle and will not give accurate readings with any modern aftermarkt gas tank sending unit that operates on the OHMs principle. However, please do let us know how your 70 ohm idea works oput. I do hope your idea works although I don't know what "average accuracy" means. We need 'real time" on the spot accuracy. Last edited by 19Fordy; 12-30-2021 at 10:38 AM.

12-30-2021, 01:10 AM	#12
JayChicago Senior Member Join Date: Jan 2019 Location: Chicago Posts: 728	Re: 41 ford car stock gas tank sending unit - recommendation I found by trial and error that the replacement sender in my car needed a 7 ohm resistor (not 70 ohm!) to get the gauge to read accurately at empty. And then it is only accurate near empty, not full range. With full tank the needle stays pegged until tank is about 3/4 full, then starts coming down. But as mentioned above, accuracy is not important up there. I only care about accuracy when I have to start thinking about how far to the next gas station.

12-30-2021, 10:45 AM	#13
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,925	Re: 41 ford car stock gas tank sending unit - recommendation It's good to know how many gallons of gas you have left in your tank when the needle reads 3/4, 1/2 ,1/4 and E because it provides you with an estimate of how many more miles you can drive,especially if gas stations are few and far between. Having your gauge read accurately gives peace of mind. Who prefers a gauge that reads 1/4 tank left one minute and then the next minute the needle drops like a rock to E and your running on fumes?

12-30-2021, 10:47 AM	#14
Anteek29 Senior Member Join Date: Dec 2014 Location: Santa Maria, CA Posts: 985	Re: 41 ford car stock gas tank sending unit - recommendation Fortunately, I found an NOS sender on ePay for my '41. Was a bit pricey but now I can rely on what the gauge indicates. Otherwise, your mileage may vary... __________________ Alan 1929 Special Coupe 1941 Pick-Up 1955 Victoria

12-30-2021, 10:53 AM	#15
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,925	Re: 41 ford car stock gas tank sending unit - recommendation Anteek, Smart move. Whatever you paid for that 1941 NOS unit, the price was right. It was worth it. They are very hard to find. Last edited by 19Fordy; 12-30-2021 at 11:03 AM.

12-31-2021, 03:15 PM	#17
mercury 48 Member Join Date: Dec 2012 Location: Downriver, Michigan Posts: 36	Re: 41 ford car stock gas tank sending unit - recommendation I have a ford nos gas sender .1941 ford gas gauge would like to set sender arm to full and empty.E mail [email protected].

12-31-2021, 03:57 PM	#18
hubercats Junior Member Join Date: Aug 2020 Posts: 8	Re: 41 ford car stock gas tank sending unit - recommendation @JayChicago: Out of curiosity, did you place the 7 Ohm resistor in series with the gauge or in parallel? My gut instinct suggests placing it in series. Thanks!

12-31-2021, 08:45 PM	#19
Veeder Senior Member Join Date: Dec 2012 Location: CT Posts: 394	Re: 41 ford car stock gas tank sending unit - recommendation Messed with a variety of resistor configurations today it appears that a resistor in series of a value between 2.2 --2.5 ohms does the trick. I do think that each car will end up being slightly different. I'LL do a bit more testing within the next couple of weeks to confirm. However for my car it's looking like 2.3 ohms in series does the trick.

12-31-2021, 11:46 PM	#20
inkandfable Junior Member Join Date: Dec 2021 Posts: 1	Re: 41 ford car stock gas tank sending unit - recommendation Just sent you my contact inf that you!!!