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Builds, Repairs, Show Your Machines! => Technical Tips, Builds, and Help => Topic started by: Jim on October 30, 2024, 11:11:12 pm

Title: Re: Jensen Cast Iron Genny Question
Post by: Jim on October 31, 2024, 05:02:22 pm
Thanks one and all.

Someone on YT told me "buy some MES fitting warm white LED bulbs, and a rectifier as the output of the generator is ac".

I've googled the bulbs, but 'rectifier' is another language to me.
Title: Re: Jensen Cast Iron Genny Question
Post by: D E Jones on October 31, 2024, 03:59:33 pm
I have a modern Jensen 15 generator, which just barely worked when new . I just assumed that was just the nature of the beast and accepted it . Later on , I was working with it , and found that the ground was loose . I tightened that loose ground , and man what a difference it made . The bulb now lights up like it should .
Title: Re: Jensen Cast Iron Genny Question
Post by: St Paul Steam on October 31, 2024, 10:20:18 am
One of my Jensen cast iron genny's barely lights the correct Jensen globe.
With the lights dimmed in the room and a 20G going flat chat driving the genny I can see a feint glow of the filament.

Any hints?

Jensen magnets are notoriously weak and sometimes need to be re-magnetized.
Very true,  find a bloke in your area  that dabbles in hit n miss engines & he'll  be able to help you. The top piece of the magnet set is the only part that's magnetized.
Title: Re: Jensen Cast Iron Genny Question
Post by: Stoker on October 31, 2024, 09:35:21 am
One of my Jensen cast iron genny's barely lights the correct Jensen globe.
With the lights dimmed in the room and a 20G going flat chat driving the genny I can see a feint glow of the filament.

Any hints?

Jensen magnets are notoriously weak and sometimes need to be re-magnetized.
Title: Re: Jensen Cast Iron Genny Question
Post by: Steamburns on October 31, 2024, 07:58:06 am
One of my Jensen cast iron genny's barely lights the correct Jensen globe.
With the lights dimmed in the room and a 20G going flat chat driving the genny I can see a feint glow of the filament.

Any hints?

I’ve had luck cleaning the two leaf springs that touch the shaft as well as the shaft contact as well, using alcohol.

Probably already done that?

Title: Jensen Cast Iron Genny Question
Post by: Jim on October 30, 2024, 11:11:12 pm
One of my Jensen cast iron genny's barely lights the correct Jensen globe.
With the lights dimmed in the room and a 20G going flat chat driving the genny I can see a feint glow of the filament.

Any hints?