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1950 FC253 #1468326 Mon Sep 26 2022 07:53 PM
Joined: Jan 2016
Posts: 892
D
'Bolter
You can jump start it with a 12v battery directly to the battery post of your 6v battery to give it that extra boost trying to start it first time. Just don't stand on it too long and pull the jumper cables as soon as the truck starts. I did this with a 47 6v system to start it after being dormant for 20+ years.


Dave from Northern Kentucky
My 54 3100
1950 FC253 #1468340 Mon Sep 26 2022 09:26 PM
Joined: Jun 2022
Posts: 120
J
'Bolter
You can start it on 12v, but a 12v battery feeding a 6v coil won't work... for long.


Jethro


1954 3100
1957 6400 with dump body
1978 Custom Deluxe K10
1993 S-10 4.3
2005 GMC Yukon XL
1950 FC253 #1468967 Fri Sep 30 2022 02:46 PM
Joined: Jun 2004
Posts: 8,590
W
'Bolter
I have started many of them on 12 volts. Disconnect the wire going to the rest of the truck electrical system so you will not damage any gauges or other equipment. I always put an ignition resister in the jumper going to the power side of the coil. Get one for a late 50's chevy. They are not expensive. Without it you will burn the points.
George


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.

1972 Chevy c10 Cheyenne Super
1950 FC253 #1468969 Fri Sep 30 2022 03:08 PM
Joined: Jul 2022
Posts: 28
1
'50 GMC 1 Ton Dually - Barn Find (sort of...no barn)
is this (see pic) similar to the Ignition Resistor you're referring to ??

Attached Images
Ignition Resistor.JPG (26.29 KB, 131 downloads)
1950 FC253 #1468971 Fri Sep 30 2022 03:21 PM
Joined: Sep 2001
Posts: 31,680
Bubba - Curmudgeon
Optima Red Top 6V Battery - works for me every time.

1954 235 and 261 truck engines.


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
1950 FC253 #1468972 Fri Sep 30 2022 03:28 PM
Joined: May 2005
Posts: 9,098
B
Sir Searchalot
1950 FC293.

Do you have a foot start or a solenoid start?

1. Your first question was answered by Kevin. Buy that switch and buy the tumbler and keys for it. Sounds like you ordered it, good.
Don't need it for a start up.
2. You say you do not have a 6V battery.
3. Buy a 6V battery or convert to 12V. Do one or the other.

If you don't have a 6V battery, want to start and run on a 12V battery and you have a foot start, you will have to buy a 12V coil [classicparts.com], a ballast resistor [classicparts.com] and a foot start switch with a side terminal [classicparts.com]. That's half way to a 12V conversion. So advise what you want to do and I will help.





1950 FC253 #1469119 Sat Oct 01 2022 03:00 PM
Joined: Jul 2022
Posts: 28
1
'50 GMC 1 Ton Dually - Barn Find (sort of...no barn)
Foot Start...I do have the Switch/Tumbler/Keys in hand but not ready to install as my only goal right now is to get the first start, and then I plan on covering with a tarp until Spring...truck is stored outdoors and I won't have anymore time to devote to it this year. I do intend to convert to 12v next Spring/Summer in preparation for a modern V8 at a later time (another reason I don't want to buy a 6v battery). Is the Ignition Resistor and 12v Coil really necessary if I disconnect the 12v starting source as soon as the engine starts ?? I do appreciate all the feedback from everyone as it has been very helpful...this is the first 6v vehicle I've dealt with. What is the need for the Foot Switch w/ Side Terminal ?

1950 FC253 #1469125 Sat Oct 01 2022 03:25 PM
Joined: Feb 2001
Posts: 7,361
W
'Bolter
I feel sorry when I read posts like these. Not bragging but I have 2 garages one climate control and the other 26x24 2 stories and I have very little mechanical ability. Just pray for an early spring. Best of luck.


Ron, The Computer Greek
I love therefore I am.

1960 MGA Roadster Sold 7/18/2017
1954 3100 Chevy truck in the Gallery
2017 Buick Encore
Pix on Photobucket
1950 FC253 #1469143 Sat Oct 01 2022 06:21 PM
Joined: May 2005
Posts: 9,098
B
Sir Searchalot
Originally Posted by 1950 FC253
Foot Start...I do have the Switch/Tumbler/Keys in hand but not ready to install as my only goal right now is to get the first start, and then I plan on covering with a tarp until Spring...truck is stored outdoors and I won't have anymore time to devote to it this year. I do intend to convert to 12v next Spring/Summer in preparation for a modern V8 at a later time (another reason I don't want to buy a 6v battery). Is the Ignition Resistor and 12v Coil really necessary if I disconnect the 12v starting source as soon as the engine starts ?? I do appreciate all the feedback from everyone as it has been very helpful...this is the first 6v vehicle I've dealt with. What is the need for the Foot Switch w/ Side Terminal ?

I don't know about disconnecting the 12V jump upon startup and running the motor. The charging system will have to be disconnected. Also the points may burn before you do whatever you are going to do.

The side terminal allows a normal 12V conversion system to max the voltage to starter and points during start, then when foot is lifted, reduce the voltage, thru the ballast, to the points.

I just know what works to get you started. Any other sketchy idea is up to you. A 6V battery will be the cheapest and easiest way. Find someone with a tractor or older truck to borrow the battery. Lord knows you are in the middle of tractor country.





1950 FC253 #1469218 Sun Oct 02 2022 02:40 PM
Joined: Jun 2004
Posts: 8,590
W
'Bolter
Originally Posted by 1950 FC253
is this (see pic) similar to the Ignition Resistor you're referring to ??
Yes. Wire that in with the hot wire going to the coil. Use the 6 volt coil. It will work fine. You can get the starter switch with the term. on the side but it will not be necessary
to start it. You will need it & a 12 volt coil when you finally switch to 12 volts. You will want to switch to neg. ground when you make the final conversion.

George

Last edited by Wrenchbender Ret.; Sun Oct 02 2022 02:42 PM. Reason: Another thought

They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.

1972 Chevy c10 Cheyenne Super
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