1914 Evinrude RBM

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Lyks2Tinkr
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1914 Evinrude RBM

Postby Lyks2Tinkr » Mon Jul 09, 2018 8:40 am

Good morning all

I took out my 1914 Evinrude RBM yesterday with hopes of putting it on the boat. I could not get it started just a couple feeble coughs.
I've had this running previously in a test tank but it's been sitting for a couple years.
I have fuel flow when the poppet valve is depressed. After a few tries the plug comes out wet.
What are the general settings of the mixer to get it going?
The poppet has a height adjustment knob with numbers as well as the needle valve.

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Richard A. White
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Re: 1914 Evinrude RBM

Postby Richard A. White » Mon Jul 09, 2018 12:29 pm

Those settings vary with each motor... mine runs at a lower number than most others, if the plugs are wet, close the bottom needle as the top is air.. once the bottom needle is closed, roll it over to start, it should fire after an attempt or so, and if you are quick enough you should be able to open the bottom valve one half turn, and hopefully it will still be running, adjust in small increments from there.

Hope this helps

Richard

Richard A. White
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wbeaton
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Re: 1914 Evinrude RBM

Postby wbeaton » Mon Jul 09, 2018 12:32 pm

I don't know much about RBM's. My 1922 Model A starts best with the mixing valve turned out 1/2 - 5/8 turns. The poppet valve happens to be set around 2/3's of a turn, but I don't think that's a big deal. I set mine while it was running on the boat and then left it alone. I'm currently working through some magneto issues so I don't have much running time on the motor.

Lyks2Tinkr
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Re: 1914 Evinrude RBM

Postby Lyks2Tinkr » Tue Jul 10, 2018 7:30 am

Thanks for the replies. I'll set the air at 3/4 turn and crack the fuel open a little from there.
I started trying that Sunday but my arm got tired from cranking.

Brook N.
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Re: 1914 Evinrude RBM

Postby Brook N. » Tue Jul 10, 2018 9:42 am

Morning Phil,
As others have pointed out each motors setting are different.
Needle & seat conditions will vary directly affecting this.
One other thing that could cause this is a week battery or
a bad plug.

Respectfully,
Brook E. Newcomb
Evinrude Rowboat Motor
Special Interest Group
(508)-277-4448
benewcomb@hotmail.com

Lyks2Tinkr
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Re: 1914 Evinrude RBM

Postby Lyks2Tinkr » Tue Jul 10, 2018 2:12 pm

Hi Brook

Thanks for the suggestions. I know the battery is OK as I run my quad on it. The buzz coil does throw a really hot spark. I will try a fresh plug next time

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Tubs
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Re: 1914 Evinrude RBM

Postby Tubs » Tue Jul 10, 2018 7:07 pm

Usually just shutting off the gas on a flooded RBM or
any poppet valve motor and pulling it over should
see it start and clean itself out rather quickly. Then
start over. Theirs is no butterfly as in a carburetor
so your just pulling in fresh air with no restriction as
you would with a carbureted motor at WOT. If motor
has been run before and it won’t start and clean
itself out by shutting off the gas ( closing the mixture
screw all the way if you have a float bowl) I would
suspect some other issue.
Last edited by Tubs on Wed Jul 11, 2018 8:22 am, edited 1 time in total.
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Lyks2Tinkr
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Re: 1914 Evinrude RBM

Postby Lyks2Tinkr » Wed Jul 11, 2018 4:19 am

Thanks for the reply. I hope to give it a try again this week.
There is an adjustment on the points. Is there a preferred setting for them?


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