Thread: Pump bearing sizes
07-23-2010, 01:39 PM #1
Pump bearing sizes
What size are the bearings on the pump (front and rear) for a GPR? Are these the same sizes that are used on the "Magnum" Skat pump?
I am going to be putting a skat pump together. Figured while the bearings are pulled, I might as well look at some really bad a$$ bearings to put into it.
08-09-2011, 10:13 AM #2
Bumping a mad old thread. Would like to find this out if possible.
08-09-2011, 03:02 PM #3
- Join Date
- Jan 2006
- Texas City, Texas
I believe that RPM racing in Arizona did some work with their pump modifications on Gpr's back in the day. I would give them a call. Maybe Hydrotoys is aware of the mods done.
They did put in heavier duty bearings.
08-20-2011, 04:30 AM #4
Yup, RPM (Ted Thompson) did bearing upgrades for RPM back in the day. The SKAT setback bearing assembly for the Yamaha is woefully weak and wobbly. The Skat-Magnum pumps that are NOT setback use the stock Yami system, and are much better design.
08-23-2011, 05:09 PM #5
I am having some trouble identifying my Skat pump. I am going to throw some pictures up and see if anyone recognizes it.
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