crunch tubes needed on azusa spinners?

[Phil1958]

probably a dumb question but do any of you use
crunch tubes on the 8" spinners?

:thumbsup:

 

[Mariah]

What is a crunch tube?

 

[Phil1958]

a crunch tube is a spacer between the bearings in a two piece
wheel assembly. it protects the weak castings against the static
pressure caused by the torque the axle bolts.

 

[Mariah]

Yes Phil you need them, it limits the crush factor on the bearings and the wheel castings. Easy part to make with your lathe.

 

[CarPlayLB]

Phil, if you are using the nylon lock nuts on the axle, they are not necessary. The original set ups had those, as there were no lock nuts used and the tightening of the bolt with a lock washer was to hold the whole assembly together, which gave the opportunity to over tighten the bearings if there was no bushing there. I use these lock nuts
https://www.OldMiniBikes.com/5-8-18-j.html

I have made my own bearing spacers from aluminum tube that you can find at Lowes/Home Depot that has a 5/8" diameter

 

[Phil1958]

Phil, if you are using the nylon lock nuts on the axle, they are not necessary. The original set ups had those, as there were no lock nuts used and the tightening of the bolt with a lock washer was to hold the whole assembly together, which gave the opportunity to over tighten the bearings if there was no bushing there. I use these lock nuts
https://www.OldMiniBikes.com/5-8-18-j.html

I have made my own bearing spacers from aluminum tube that you can find at Lowes/Home Depot that has a 5/8" diameter

how do the lock nuts on the axle prevent the crunch?

 

[Havasu Dave]

how do the lock nuts on the axle prevent the crunch?

Because you don't have to torque the nuts enough to compress the lock washers. (They hold and lock with less torque to them)

 

[Phil1958]

makes sense. thanks to all!

:thumbsup:

 

[Phil1958]

spun up a set of 2.010" wide tubes made of aluminum. didn't have any 5/8"
steel tube, i used 1" aluminum. if they help good, if not it was fun playing on
the lathe.

:thumbsup:

 

[Mariah]

Nice looking tubes you have there Phil, those will allow tightening so the spacers don't rub away the paint and the forks will be stiffer.

 

[The BLACKOUT KiD]

spun up a set of 2.010" wide tubes made of aluminum. didn't have any 5/8"
steel tube, i used 1" aluminum. if they help good, if not it was fun playing on
the lathe.

:thumbsup:


View attachment 97433

How did those work out for ya?