Another two carriers roll off the production line

[cantankrs]

Originally Posted by Lynn Eades

Alex, My guess is that this is a "rotary riveter"

Hi Lynn,

Thanks for the possible clue but I can't find much info on a rotary riveter. Does it simultaneously compress the rivet and have a rotary action at the forming end that slowly spins down the head to form?

I've seen other footage of an M3 Medium tank hull lower side plate which is roughly 2' high and about maybe 1.25" thick being riveted to the bottom angle and there appear to be 2 additional hot rivets already situated in two holes ahead of the squeezer. The footage only shows one guy and he's using what looks like a foot control cos he's kind of pumping it up and down (his action looks like he's using a big version of a pneumatic tyre foot pump) but assume he's feathering a foot valve to control the pressure/power similar to trying to get a fuel bowser up to a round dollar with your hand. And the 'jack' on the squeezer looks like about a 3-stage jack even though each stage only appears to be about 6" in extension. I'm presuming a very quick action to set the rivets and to reposition the squeezer (which would have significant mass) for them to have additional hot rivets waiting. I think the rivets are hot because they appear whiter than anything else in the B&W footage.

Regards

Alex

[Lynn Eades]

I think the rotary idea, is so that the rivets end up symetrical, and yes they will be hot. That way as they cool, they pull up tight,as well as spreading to fill the holes, so that there is no movement in shear.

[martyn]

Hi we had a trial run at rivetting on friday and found out that you can use a kango braker or two and thats enough to do the job were having a bit of difficulty guaging the lenth of the rivet and getting a good finsh but that will come with practice have got a few photos of us messing around hope you find them as funny as it was trying this for the first time.

[Hanno Spoelstra]

Originally Posted by martyn

Hi we had a trial run at rivetting on friday and found out that you can use a kango braker or two and thats enough to do the job

Brilliant! Looks like a great job.

So, how many rivets does a Carrier count?

- Hanno

[Ledsel]

That looks damn good.

[aj.lec]

Looking good Martyn
I think the length depends a bit on how much clearance in the hole but the ones I did worked well at 1 diameter for 1/2 inch rivets per head and 1.25 for 3/8 inch as these seemed to compress more
Kangas look to do a nice consistent head .Well done

[Lynn Eades]

There is a formula for the length of the rivet. Anyone know how it goes?