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The 2-Stroke Garage => Turning Wrenches => Topic started by: rd400greenhorn on September 18, 2020, 12:26:54 PM

Title: Rd400 transmission bearings
Post by: rd400greenhorn on September 18, 2020, 12:26:54 PM
Hi guys
So, i thought i had the new bearing for this replacement ( see picture)
But Its a bit bigger outsider, but fits the shaft and appears the engine as well..

Its the same bearing as sits oppsite end on the other gear shaft

Can anyone confirm or maybe shead some light on this bearings issue :umm:

The bigger bearing is new
Title: Re: Rd400 transmission bearings
Post by: Striker1423 on September 18, 2020, 02:28:48 PM
The bearing is the same outer diameter, but as you can see, the rollers are smaller. Hence, there's more rollers in the bearing itself. Once on the shaft, the bearing rollers are forced outward to create the correct size.
Title: Re: Rd400 transmission bearings
Post by: 1976RD400C on September 18, 2020, 02:33:27 PM
Take a close look at your case where those bearings fit. The shaft with the clutch uses a smaller outside diameter bearing than the shaft with the chain sprocket.
Title: Re: Rd400 transmission bearings
Post by: rd400greenhorn on September 18, 2020, 05:09:12 PM
Got it :)
I Will get the correct bearing, hopefully in the Kit iam waiting for to arrive