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9n charging

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wayne

07-20-2003 10:33:24




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just got 1940 9n ,it has been converted to 12volt but only seems to start charging when running at high r.p.m.s. is there any way to get it to charge when it starts? it is a single wire alt. thank you in advance. wayne




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nope . . . Dell (WA)

07-20-2003 10:58:22




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 Re: 9n charging in reply to wayne, 07-20-2003 10:33:24  
Wayne..... ...thats the problem with the simplistic 1-wire 12 volt alternator conversion. Ya gotta jazz that cold engine to about 1800 rpms to get it charging. This is not a problem with automobile engines because you almost always run the engine 3000+ rpms as you pull away from your parking spot. I always point that "little problem" out to the electrically challenged that want to convert to 12 volts.

Remember you N-Engine idle speed is a sloooww 400 rpms. Your N-Engine is governor regulated to 2200 rpms max.

If you want your 12 volt conversion to start charging at low engine speed, you'll need to completely re-wire and use a 3-terminal Delco 10-SI 12 volt alternator. The instructions are in the "archive" BUT I don't recommmend changing a successful conversion for the electrically challenged novice, live with it..... ....respectfully, Dell..... ..a 12 volt advocate for the right reasons

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brownie

07-20-2003 13:37:32




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 Re: Re: 9n charging in reply to nope . . . Dell (WA), 07-20-2003 10:58:22  
Yes there is a fix to this.They now make 1 wire alternators that will start charging as soon as the tractor is running.If you have a alternator shop around you check with them if you don't I can give you the # of a guy that builds these.



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wayne

07-20-2003 14:58:06




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 Re: Re: Re: 9n charging in reply to brownie, 07-20-2003 13:37:32  
thank you guys for the imfomation/ ican live with this as long as it charges. now to move on and take care of any other problems i can find and i am sure thare will be some. wayne



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Duner Wi

07-20-2003 17:32:38




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 Re: Re: Re: Re: 9n charging in reply to wayne, 07-20-2003 14:58:06  
A smaller pulley on the Alt. will speed it alt. and should cut in at lower engine RPM.



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Dell (WA)

07-20-2003 18:13:51




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 Re: Re: Re: Re: Re: 9n charging in reply to Duner Wi, 07-20-2003 17:32:38  
Duner..... ..thats only partially true. There is a MINIMUM pulley size that will flex the 5/8 wide fanbelt around. 3" dia pulley is just about the min size. Has to do with dynamics of rubber belts..... ....respectfully, Dell



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