You can’t spell “idiot” with out “I"

[Lil Foot]

Enjoyable read.
Must be the time of year for hand truck tire failures.

About a week ago, I had purchased 3 large pavers, 16" x 24", 53.3lbs each.
Just as I was unloading them, it started to rain, so I grabbed my 35yr old HF style hand truck, (with smaller 4 bolt wheels) and piled them on.
As I pulled it into the backyard, I noticed one of the tires was nearly flat, but in the rain I decided to chance it. (dummy me)
All seemed fine until I got to the RV parking spot, paved with 1" minus sharp gravel.
Next morn I found the tire was surface plate flat, popped it off, and found 2 cuts in the tube, and several cuts in the tire.
Off to HF, where I purchased 2 new tire/wheel assemblies @$8.99ea, (-15%) and picked up my freebie for that day:

https://www.harborfreight.com/2-piece-titanium-nitride-coated-high-speed-steel-step-drills-96275.html?_br_psugg_q=step+bit

I now have new wheels on this truck, plus a spare for this & my 2nd one up north.
I bought two of these trucks about 35 years ago, and this was the first trouble I've had with either, other than the obligatory airing up once or twice a year.

 

[Lil Foot]

I used to teach a beginner level machinist class for technicians who wanted to use our engineering shop.
This was one of the handouts I gave the newbies in that class.
It's a little rough, (been copied about a billon times) but if you blow it up, it's pretty clear:

 

[Sidekick]

Getting things constrained really helps for any changes you make in the future. Keeps features and holes aligned making changes easy. I think the full version you bought also has a bolt circle tool in the hole function. Alibre becomes less frustrating to use over time. I just designed my first fully enclosed print using alibre and the K1. Made several versions as I changed my mind and constraints really made the changes easy and painless.

 

[Yooper]

Here is a bolt circle calculator that you can use to figure out the diameter.

Bolt Circle Diameter Calculator

Easily find bolt circle diameter with our free calculator. Enter your values and get instant results. Simple, fast, and accurate.

a2zcalculators.com

 

[WI_Hedgehog]

I just measure the hub diameter, bolt-hole diameter, and distance between the bolt hole and hub. A bit of simple math and you know how far the center of the bolt hole is from the center of the hub.

Draw the wheel:
c 0,0 (circle center at 0,0)
d 6 (diameter of 6")


Center Hub:
c 0,0 (circle center at 0,0)
d 1.25 (diameter of 1-1/4")


First Bolt Hole:
c 1.5,0 (circle center at 1.5")
d .375 (diameter of 3/8")


Second Bolt Hole:
co (copy object, select bolt hole)
0,0 (base point of displacement)
0,0 (offset, so two holes on top each other)

rotate (select a bolt hole, which doesn't matter)
0,0 (base point)
72 (angle)


Third Bolt Hole:
(same as second bolt hole, just select the second hole instead)


Fourth-Select the third
Fifth-Select the fourth


In theory you can create a Polar Array or Circular Array, but that's dependent on the CAD program. It used to be Bolt Circle, but by removing that feature and adding Polar Array it's easier to add fan blades in 3-D space and such, so no more Bolt Circle.

Let's try it! Start with one Bolt Hole:


In AutoCAD type Array


select Polar


Center Point (change from to 0.0)
and change the number of items from 4 to 5

Enter

 

[trikepilot]

All that and you still have pneumatic tires. I swapped my tires out for airless ones and haven't looked back. Got tired of having to put air in the tires every time I wanted to use it.

1000% agree! best move I ever made

 

[Botamon]

All that and you still have pneumatic tires. I swapped my tires out for airless ones and haven't looked back. Got tired of having to put air in the tires every time I wanted to use it.

Same here. Both hand trucks, wheelbarrow - all got solid tires a few years back. No more problems!

 

[Runs With Scissors]

Getting things constrained really helps for any changes you make in the future. Keeps features and holes aligned making changes easy. I think the full version you bought also has a bolt circle tool in the hole function. Alibre becomes less frustrating to use over time. I just designed my first fully enclosed print using alibre and the K1. Made several versions as I changed my mind and constraints really made the changes easy and painless.
View attachment 167948 View attachment 167949 View attachment 167947

I tend to "shy away” from constraints because it seems that every time I put one on place, it screws up my "next move”.

Although, in my heart, I know that I need to get over that.

Advanced users, such as yourself, are always using them. (case in point: my above situation)

Now that I am getting “more comfortable” with the program, I will make a concerted effort to use them more often.

 

[Runs With Scissors]

I just measure the hub diameter, bolt-hole diameter, and distance between the bolt hole and hub. A bit of simple math and you know how far the center of the bolt hole is from the center of the hub.

Draw the wheel:
c 0,0 (circle center at 0,0)
d 6 (diameter of 6")
View attachment 167950

Center Hub:
c 0,0 (circle center at 0,0)
d 1.25 (diameter of 1-1/4")
View attachment 167951

First Bolt Hole:
c 1.5,0 (circle center at 1.5")
d .375 (diameter of 3/8")
View attachment 167952

Second Bolt Hole:
co (copy object, select bolt hole)
0,0 (base point of displacement)
0,0 (offset, so two holes on top each other)

rotate (select a bolt hole, which doesn't matter)
0,0 (base point)
72 (angle)
View attachment 167953

Third Bolt Hole:
(same as second bolt hole, just select the second hole instead)
View attachment 167954

Fourth-Select the third
Fifth-Select the fourth
View attachment 167955

In theory you can create a Polar Array or Circular Array, but that's dependent on the CAD program. It used to be Bolt Circle, but by removing that feature and adding Polar Array it's easier to add fan blades in 3-D space and such, so no more Bolt Circle.

Let's try it! Start with one Bolt Hole:
View attachment 167956

In AutoCAD type Array
View attachment 167957

select Polar
View attachment 167958

Center Point (change from to 0.0)
and change the number of items from 4 to 5
View attachment 167959
Enter
View attachment 167955

Thanks for that "tutorial"

I think Alibre has a similar function.

I will have to give it a go.

 

[Yooper]

Getting things constrained really helps for any changes you make in the future. Keeps features and holes aligned making changes easy. I think the full version you bought also has a bolt circle tool in the hole function. Alibre becomes less frustrating to use over time. I just designed my first fully enclosed print using alibre and the K1. Made several versions as I changed my mind and constraints really made the changes easy and painless.
View attachment 167948 View attachment 167949 View attachment 167947

Gotta ask. What is this? Impressive work!

 

[Sidekick]

Gotta ask. What is this? Impressive work!

It's to catch dust on a sander for working with wood.