Roller Rotary

***TitaniumTT*** · 01-10-2011, 11:50 PM

Where is that from? Website, links, more infor..... is that from a 16X? Seems pretty wide to me.

RETed · 01-11-2011, 04:11 AM

Less friction = more efficient engine
More efficient engine = more power using less fuel

Or course, the downside is that needle bearings are less reliable versus journal bearings.
I'd imagine service interval is a lot shorter for these needle bearings versus journal bearings.
If you're building a "race engine", this is not going to matter.

-Ted

sickofpistons · 01-11-2011, 01:10 PM

Quote:

Originally Posted by RETed

Less friction = more efficient engine
More efficient engine = more power using less fuel

Or course, the downside is that needle bearings are less reliable versus journal bearings.
I'd imagine service interval is a lot shorter for these needle bearings versus journal bearings.
If you're building a "race engine", this is not going to matter.

-Ted

What would make the needle bearing less reliable vs journal?
Thanks.

RETed · 01-12-2011, 12:28 AM

Quote:

Originally Posted by sickofpistons

What would make the needle bearing less reliable vs journal?

It's inherent to the design...
Less parts = better reliability
This is why journal bearings are used in the most inaccessible locations.

Anyone who has lost a pilot bearing on their RX-7's knows what I mean...

-Ted

Judge Ito · 01-12-2011, 05:47 AM

on my own personal 13B I tried roller bearings on the front and rear stationary gears over 6 years ago. there is pros and cons..

01-10-2011, 11:50 PM	#1
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01-12-2011, 05:47 AM	#5
Judge Ito Porting Master Join Date: Mar 2009 Location: North Jersey, USA Posts: 154 Rep Power: 17	on my own personal 13B I tried roller bearings on the front and rear stationary gears over 6 years ago. there is pros and cons..