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briggs twins

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Post by the engineer Fri Oct 30 2020, 07:35

hi these are two briggs and stratton twins i made around 15 years ago great fun to hear running and reliable
red one is the 1st one i did using tecumseh carbs
grey one is  a honda  motorcycle carb both will run happily under load at around 5000 rpm and still run now
i had a lot of fun doing these  and have since made a tecumseh tripple
regards john
briggs twins Pictur11
https://i.servimg.com/u/f34/20/27/47/58/red_br11.jpg


Last edited by the engineer on Fri Oct 30 2020, 07:45; edited 1 time in total (Reason for editing : first post and fun with getting photos right)

the engineer
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Post by Woodsman Fri Oct 30 2020, 10:02

Nice to see you back John.
I've always fancied marrying two Villiers as a vee or boxer but my engineering skills are almost nil in the machine shop. Crying or Very sad

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Post by the engineer Fri Oct 30 2020, 10:21

yep got lost when i got a new computer trying to find every thing again

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Post by oldgit Fri Oct 30 2020, 19:34

They look good.
How are the cranks phased on the twins; is it:- both pistons at tdc, at the same time, or, one at tdc whilst the other is at bdc?

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Post by the engineer Fri Oct 30 2020, 20:41

they are both parallel i did one at 180 and had to go twin carb to get a stable idle on both cyls
with single carb it always had one weak cyl at idle due to valve overlap robbing manifold vacume

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