Heymow - Lawnmower Racing Forum

Engine Help => Briggs Flathead => Topic started by: zinger on March 06, 2012, 06:24:45 pm

Title: briggs no essentrics?
Post by: zinger on March 06, 2012, 06:24:45 pm

I found a 1978 Briggs with no essentrics? what year did they start putting essentrics? :chris:javascript:void(0);

Title: Re: briggs no essentrics?
Post by: Rooster on March 06, 2012, 07:03:47 pm

what engine?

Title: Re: briggs no essentrics?
Post by: Huffy044 on March 06, 2012, 09:34:45 pm

Guessking a 19?, honestly I have never seen a 12 without ecentrics?

Title: Re: briggs no essentrics?
Post by: Toadworks on March 07, 2012, 04:28:27 pm

My old Briggs data for Model 28's shows a 16 pound crankshaft as a part number and two styles of cranks that weigh about half of that. The heavy doesn't have a syncro-balancer and the other two are the removable and non removable eccentrics with syncro-balance. What year? I have no idea. I too have never seen one of the heavy ones.

  
Check this out;

http://en.wikipedia.org/wiki/Briggs_%26_Stratton

The Synchro-Balanced Engine - This 1966 innovation was designed to attenuate vibration caused by the reciprocating mass of a single-cylinder engine. The design was a series of counterweights opposing the crankpin.[10]


10. ^ The Legend of Briggs & Stratton by Jeffrey L. Rodengen, Chapter 11, pages 121-122

Title: Re: briggs no essentrics?
Post by: GRUBDIGGER on March 08, 2012, 03:39:51 pm

FOR THE MOST PART THEY DID THIS BECAUSE IT WAS CHEAPER THAN BALANCING THEM LIKE THEY DID IN THE 1.5-8 HORSE POWER ENGINES. IT ALSO MENT WE CAN MAKE MORE AND SELL EM CHEAPER THAN THE COMPITION.

Title: Re: briggs no essentrics?
Post by: westonedelbrock on March 08, 2012, 11:33:18 pm

te motor is a model 25.

Title: Re: briggs no essentrics?
Post by: westonedelbrock on March 09, 2012, 10:21:22 am

i believe this crankshaft is one of the heavy ones like you said.