Stuff you have made today

[slim_boy_fat]

To be in with a chance of a Darwin Award you need to be dead.

These are just candidates though......

 

[postie jon]

These are just candidates though......

mmmmm i would have let the alsation loose

 

[Shox Dr]

Botton two pipes for a 7cly radial.

 

[mechman]

Where does the maths come in to dividing 7 cyls into 360 degrees?

 

[Farside]

Where does the maths come in to dividing 7 cyls into 360 degrees?

Getting the dynamic balance in the right ballpark, I presume. Same as why 9-cyl radials. The whirly bits inside have their own preferences and periods and resonances, and all that hoohah. If the balance is wrong, things want to fly asunder.
Then there's the simple question of how many cylinders can you cram into a circle. The radial engine is a marvellous thing, if you look at the multiple stacks of cylinders on a B29.

 

[mechman]

I can understand 9 into 360 every 40 degrees but not 7

 

[Hood]

I can understand 9 into 360 every 40 degrees but not 7

Things don't have to be round numbers, they can be decimals/fractions and still work in. Lets face it even with something that works out to a round number such as 3 would be 120 degrees. How accurately can you get the 120 degrees? I would say just as accurately as you could get the 51.4285714286 degrees of a 7 cylinder radial.

 

[Ruffian]

Or as it's known in some shops,

"That'll do"

 

[Hood]

Or as it's known in some shops,

"That'll do"

I think that is just over a bahair which is pretty good according to the boatyard guys up here

 

[MattF]

Things don't have to be round numbers, they can be decimals/fractions and still work in. Lets face it even with something that works out to a round number such as 3 would be 120 degrees. How accurately can you get the 120 degrees? I would say just as accurately as you could get the 51.4285714286 degrees of a 7 cylinder radial.

You should know better than to confuse a discussion with facts. Here, fill your boots in this thread, whilst you're in the mood:

https://www.mig-welding.co.uk/forum/threads/vibration.83312/

 

[Hood]

I would just get myself a 7000ppr encoder and use that for easy measurement

 

[Hood]

You should know better than to confuse a discussion with facts. Here, fill your boots in this thread, whilst you're in the mood:

https://www.mig-welding.co.uk/forum/threads/vibration.83312/

Ah, I saw that discussion the last day and was poised to put in a reply then I thought better of it

 

[mechman]

It's still not right, I had a made who got sacked for being just a Thou out (he worked in Barclays Bank) ah yes the olduns are best.

 

[slim_boy_fat]

just over a bahair

Aka a "joiner's thochtie" in other trades.

 

[Morris]

I can understand 9 into 360 every 40 degrees but not 7

It's because of firing orders, even numbers are not practical with radial engines. Good explainings here http://okigihan.blogspot.com/p/firingorder-firing-order-of-engine-is.html

 

[KemppiFrog]

Radials only have one main bearing per row. There is a master con rod and the other rods are pinned into it.

Edit:Just had a look at the link above. All explained there.

 

[Shox Dr]

It's because of firing orders, even numbers are not practical with radial engines. Good explainings here http://okigihan.blogspot.com/p/firingorder-firing-order-of-engine-is.html

Correct. 7cly fires 1357246

 

[Maker]

I made pizza. Couldn't decide what I wanted so I made two, SD tomato, pesto and mozzarella on the left, various Italian cured meats on the right. A drizzle of oil before it goes in the oven and a few leaves of fresh basil once it comes out. Dough made with this excellent recipe:

 

[Parm]

View attachment 146436

I made pizza. Couldn't decide what I wanted so I made two, SD tomato, pesto and mozzarella on the left, various Italian cured meats on the right. A drizzle of oil before it goes in the oven and a few leaves of fresh basil once it comes out. Dough made with this excellent recipe:

Ace !!!

 

[Ian James]

A couple of beam hangers made today between shifts