built it with precision in mind according to one of many instruction pages on the web. two 3” pvc pipes, 4x4' 3/4" plywood platform with 2 wheels at 45-degree angle on each corner. When you push it even at walking speed, it vibrates as though the wheels or pipes were bumpy. They’re not. Could cheap wheels/bearings from a walmart deck be an issue? They don’t look or feel different from expensive ones.
thanks

i had a similar problem until my friend built connecting end caps for the pvc pipe. They pop right into the end of the pipes on both ends and keep the parrallel distance rigid.

quote:

REDking said:
They pop right into the end of the pipes on both ends and keep the parrallel distance rigid.

Good idea. I can't believe I never considered that... and I always pretend to be so smart...

dpoet, you use 3" PVC? I have 1.25" pipe, only because it's lighter and smaller and cheaper. What do other people use?

Here's a pic of the endcaps made by James Stone.

you are lucky to have used the small pipe if it works...the lighter the better

i think i'll get the good wheels...if no change, the ties

thank you all for responding