What's on your bench?

[av8or3]

Thanks for sharing sir. How many HP does an engine like that make?

T=Turbo
S=Supercharged
I=Injected
O=Opposed
520=cubic inches

325HP @2700 rpm

 

[av8or3]

Here’s the turbo setup. I think it’s bigger than most you’d find on a car. View from the side.

 

[Mastermind]

Bad ass.

 

[Wilhelm]

I do. I can make them sharper than new.

Factory ground drill bits are sharpened quite conservative, more for longevity than drilling performance.
Do You do a cross cut on the drill bits tip and grind down the flutes shoulders?

Nice ill bring a 5 gallon bucket full next trip down! I'll bring my fancy tool for working on 90° RA's too!

I'd be game for good company and a drink.
HSS bits are easy, Solid-Carbide take a lot of time.

When I try freehand the bits cant even drill wood when I'm done hacking them up. Lol

It is a matter of the twist of Your wrist while grinding the bit, and a well dressed good grinding wheel.
Take a bigger diameter bit and try following the factory grind on Your bench grinder wheel while the grinder is shut off, it can help You to get an idea how to move the bit on the wheel.

It’s an art. But not difficult once you know how

True on both.

I would like to think that I can grind drill bits quite well.
I am self thought.
All drill bits that I grind tend to be aggressive which is not an issue when they are used in a machine, I tame them after the initial grinding if they are being used freehand.
Drill bits that I grind are like a square ground chainsaw chain.

I like me some good drill bits.

Finally a topic that I can relate to.

 

[av8or3]

Bad ass.

The turbos not only pressurize the intake charge, they also pressurize the cabin, so that at 20,000 feet the air inside is like you would breath at 7,000 ft. Without supplemental oxygen you would suffer from and eventually pass out from hypoxia in just a few minutes once you passed 10,000 ft. Pressurizing the cabin allows you to fly over a lot of weather , take advantage of winds aloft(or temps) and get up where the aircraft is most efficient. Different world up there. I should add that the engines “feel” like they’re running a a lower altitude where the air is denser and are able to produce the same HP up there in the thin air as they can at lower altitudes. No different now than it was in the 1920’s except then I’m certain all that boost was used to add HP and not pressurize anything but the engine.

 

[Mastermind]

Different world up there.

Oh yeah.

 

[Mastermind]

My humble bit sharpening setup.

 

[countryhog]

My humble bit sharpening setup.

View attachment 246384 View attachment 246385

Got one similar but haven’t set it up yet. How’s it do?

 

[Mastermind]

Got one similar but haven’t set it up yet. How’s it do?

Works really well.

 

[RI Chevy]

TY.

 

[huskihl]

Factory ground drill bits are sharpened quite conservative, more for longevity than drilling performance.
Do You do a cross cut on the drill bits tip and grind down the flutes shoulders?


I'd be game for good company and a drink.
HSS bits are easy, Solid-Carbide take a lot of time.


It is a matter of the twist of Your wrist while grinding the bit, and a well dressed good grinding wheel.
Take a bigger diameter bit and try following the factory grind on Your bench grinder wheel while the grinder is shut off, it can help You to get an idea how to move the bit on the wheel.


True on both.

I would like to think that I can grind drill bits quite well.
I am self thought.
All drill bits that I grind tend to be aggressive which is not an issue when they are used in a machine, I tame them after the initial grinding if they are being used freehand.
Drill bits that I grind are like a square ground chainsaw chain.

I like me some good drill bits.

Finally a topic that I can relate to.

No twist. I hold the cutting edge level and drop the back hand

 

[Onan18]

Bad ass.

I want to see you build a hot saw out of one.

 

[Bilge Rat]

My humble bit sharpening setup.

View attachment 246384 View attachment 246385

Thats it?
I have one of those too.
I was waiting all day ignoring all other stuff just to learn something today.
Now i have to wake up and go figgure something out or the day will be wasted.
You gonna make me think after 5pm ain't ya.

 

[av8or3]

I couldn’t sharpen a drill bit if my life depended on it. It’s a good thing we keep just enough fresh ones (never plenty, still have to look around sometimes) to get the job done and we do a bunch of drilling.
I can drill real good, pretty good at hitting the trash bucket with a worn out bill drit too

 

[Mastermind]

Thats it?
I have one of those too.
I was waiting all day ignoring all other stuff just to learn something today.
Now i have to wake up and go figgure something out or the day will be wasted.
You gonna make me think after 5pm ain't ya.

It takes practice to get it set up just right......but I like that I can alter the angle of the tip. Making a real flat tipped bit is how I drill the spot welds out on those mufflers without drilling out the back.

 

[Bilge Rat]

I was taught to do them freehand but i was a poor student.
I still have to practice on a junk bit before i attempt it on good steel.
For many years when my machinist buddies would come to the farm to hunt or fish they would sharpen all the dull bits.
They also brought me new bits and various fasteners from Locheed and Gulfstream.

 

[WillG]

Pulled the deck off the mower for some much needed TLC. Getting a new belt and the rot holes patched. One of the rear lift brackets is just about to fall off as well. Wish that my dad's cousin who is a union pipe welder was still up here and not at his home in SC. Getting a new set of bags as well.

Sent from my E6910 using Tapatalk

 

[Wilhelm]

My humble bit sharpening setup.

View attachment 246384 View attachment 246385

Nice!
I free hand it on the front of the grinding wheel.

No twist. I hold the cutting edge level and drop the back hand

I developed a wrist twist, works pretty fine for me.

 

[av8or3]

Tonight I’m working on one of my projects. An old Solo 50. It will run again. Here’s the rest of it. I’m planning on refinishing just the black for now. And hopefully polish up that fan housing.

 

[av8or3]

And then I got this to fix when the carb kit comes in. It’s for a shooting buddy.