The Ford Barn

RalphG · 04-29-2018, 02:21 PM

When I resurrected my 39 Deluxe after many years of inactivity it was pretty slow cranking, even with a big, but old, tractor 6 volt battery. In fact we pull started it. After a few brief runs and re-starts it suddenly fixed itself and the starter was spinning that engine like it was a 12 volt battery. I don't know what happened but right about the 5:50 minute mark in this video you can hear the cranking speed increase.
https://youtu.be/xn8q0ygd3k4

big job · 04-29-2018, 03:21 PM

I second that Ralph.... Oh I see Canada not much warmer here. Since first grade in
school we never at -0- degrees never had a day off. The buses 1939 Dodge ya 6vt pos grd. that always started
more ice inside widows than out side that provided all kinds of hearts and wishes..written in window ice.. the click clack of vacuum wipers heaters blew A/C instead of heat I remember....lol

RalphG · 04-29-2018, 08:18 PM

Quote:

Originally Posted by big job

I second that Ralph.... Oh I see Canada not much warmer here.

Actually hot here today. Came in at noon sweating from yard work and it was cooler in the house than outside. 66 indoors, 68 outside. The heat coming off the flathead and Mercomatic this afternoon had us opening a window at times when the dust wasn't too bad. More on that in a separate post.

mike42 · 04-30-2018, 02:52 AM

I was out in the barn yesterday looking things over.....it dawned on me that I have a kill switch mounted to the inside fender for turning off the battery when not going to be used for awhile. I always have my battery tender on also, but do you think the switch could be draining cranking power ? I've had it installed for several years and don't remember having any problems with it before.

Mike

adileo · 04-30-2018, 10:20 AM

If the kill switch is not rated high in cranking amps it could be the culprit

AnthonyG · 04-30-2018, 10:46 AM

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I believe I skimmed over the thread and didn't see ur reply 2 the most probable 2 things suggested? I apologize if I missed them but did u check 2 make sure your 6V system has the heavier cables required? 12v cables are thinner gauge & R commonly mistakenly used on 6V systems requiring the heavier gauge. seems contrary to a mechanics mind but 12V uses smaller gauge wires 4 starter? Also disconnect all ur ground to the starter/engine clean to bare metal & reconnect covering with conductive grease o keep that way. These R the 2 most common reasons for slow cranking. I know there's the age ole argument on 6V vs 12V & I agree with the rational on the 12V for less maintenance & reliability. About 1/2 disagree but I run a 6V starter with a converted 12V system and my starter does turnover about twice as fast as it did when a 6V. Been fine for almost 6 yrs with no starter issues.

04-29-2018, 02:21 PM	#21
RalphG Senior Member Join Date: Sep 2014 Location: Sask. Canada Posts: 2,424	Re: '40 Slow cranking when starting..... When I resurrected my 39 Deluxe after many years of inactivity it was pretty slow cranking, even with a big, but old, tractor 6 volt battery. In fact we pull started it. After a few brief runs and re-starts it suddenly fixed itself and the starter was spinning that engine like it was a 12 volt battery. I don't know what happened but right about the 5:50 minute mark in this video you can hear the cranking speed increase. https://youtu.be/xn8q0ygd3k4 __________________ https://www.youtube.com/user/roosty6/videos

04-29-2018, 03:21 PM	#22
big job Senior Member Join Date: Sep 2013 Location: Dighton, Mass Posts: 1,230	Re: '40 Slow cranking when starting..... I second that Ralph.... Oh I see Canada not much warmer here. Since first grade in school we never at -0- degrees never had a day off. The buses 1939 Dodge ya 6vt pos grd. that always started more ice inside widows than out side that provided all kinds of hearts and wishes..written in window ice.. the click clack of vacuum wipers heaters blew A/C instead of heat I remember....lol

04-30-2018, 02:52 AM	#24
mike42 Senior Member Join Date: Jun 2012 Location: Gaylord, Michigan Posts: 1,599	Re: '40 Slow cranking when starting..... I was out in the barn yesterday looking things over.....it dawned on me that I have a kill switch mounted to the inside fender for turning off the battery when not going to be used for awhile. I always have my battery tender on also, but do you think the switch could be draining cranking power ? I've had it installed for several years and don't remember having any problems with it before. Mike

04-30-2018, 10:20 AM	#25
adileo Senior Member Join Date: Jun 2014 Location: New Jersey Posts: 1,772	Re: '40 Slow cranking when starting..... If the kill switch is not rated high in cranking amps it could be the culprit __________________ Thanks Andy 1952 F1

04-30-2018, 10:46 AM	#26
AnthonyG Senior Member Join Date: May 2013 Location: Pa. Posts: 2,165	Re: '40 Slow cranking when starting..... Sponsored Links (Register now to hide all advertisements) I believe I skimmed over the thread and didn't see ur reply 2 the most probable 2 things suggested? I apologize if I missed them but did u check 2 make sure your 6V system has the heavier cables required? 12v cables are thinner gauge & R commonly mistakenly used on 6V systems requiring the heavier gauge. seems contrary to a mechanics mind but 12V uses smaller gauge wires 4 starter? Also disconnect all ur ground to the starter/engine clean to bare metal & reconnect covering with conductive grease o keep that way. These R the 2 most common reasons for slow cranking. I know there's the age ole argument on 6V vs 12V & I agree with the rational on the 12V for less maintenance & reliability. About 1/2 disagree but I run a 6V starter with a converted 12V system and my starter does turnover about twice as fast as it did when a 6V. Been fine for almost 6 yrs with no starter issues. __________________ Nomad