NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   Rotary Engine Building, Porting & Swaps (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/)
-   -   Rotor Circlips (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/rotor-circlips-41605/)

Drago86 12-19-2004 11:42 AM

you really dont need it unless your exceeding 9.500 rpm



The current 12 pin retained rotors were made to handle 9k,.. and actually have less load on them at 9k then at 7k.

setzep 12-19-2004 08:25 PM

I bet that rotor was fun to chop down and make it visible to see the track. That would be about the equivalent as the plexiglass idea?

goldedge 01-01-2005 10:39 PM


Originally Posted by Lynn E. Hanover' date='Dec 17 2004, 02:11 AM
Eric Happy Meal,Dec 14 2004, 06:01 PM



>>

A very large Circlip or snap ring is fitted onto the end of the gear and compressed into the groove. The gear is pressed into the hole in the rotor, with the original pin holes lined up, and when the gear bottoms in the hole, the Circlip pops out and about half of it engages the groove in the rotor.

Then new roll pins are installed. Now the gear will not walk out of the hole, no matter how many revs, no matter how hot.



Hi, how do I get the old roll pins out? they are too hard to drill, an easyout won't grip

and the gear can't be levered out.



Suggestions welcome thanks



Regards

Michael

Liquid Anarchy 01-02-2005 04:00 AM

I don't know why everyone says the pins in our engines are so hard to drill? $5 carbide bit, some oil, and a drill press drilled the exhaust housing pin out quickly enough; don't see why it wouldn't work here.

goldedge 01-02-2005 02:42 PM


Originally Posted by Liquid Anarchy' date='Jan 2 2005, 11:00 PM
I don't know why everyone says the pins in our engines are so hard to drill? $5 carbide bit, some oil, and a drill press drilled the exhaust housing pin out quickly enough; don't see why it wouldn't work here.




Thanks for reply :-)



6mm carbide drill and drill press haven't worked for me <g> the only thing I can

try along that line is a 3mm drill for the smaller roll pin then the 6mm for the outer?



The carbide drill will do it to a point but is getting damaged and is not likely to finish the job. The pins are very well hardened.



Regards

Michael

boyrotor 01-10-2005 07:25 PM

How the heck would you get a cir clipped gear out again?

Or is that the point - you cant!?


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