Air Flow Mod For The Innokin SVD And Protank

[VaPreis]

Last night I rebuilt some Protank heads with microcoils and cotton yarn. They worked awesome, but quickly realized they'd be even better if I could improve the draw on my SVD. Flush mounting my Protank 2 on the SVD delivers a tight/slow draw. Loosening it a tad improves the draw, but my .... retentive-ness insists that a tank be tight and flush mounted.

This wasn't really my idea, as I found a video recommending using the included Protank beauty ring on a Vamo, but a Protank beauty ring will not fit inside the top beauty cap of an SVD....

....but a Nova style beauty ring does.



The nova beauty ring must be screwed in over the SVD ring because it will not pass by the SVD beauty ring threads.



Screw it down so that it is just above flush with the 510 connection/SVD ring. I've found that there is a fine line between improved air flow and no connection at the 510.



I'd say the draw is nearly doubled compared to flush mounting a protank on the SVD, and the connection is tight and pretty!

 

[MikeZ28]

You could also drill out the air hole in the SVD ring to a larger diameter to allow more airflow or drill more of them.

 

[VaPreis]

You could also drill out the air hole in the SVD ring to a larger diameter to allow more airflow or drill more of them.

That might help even more, I'm sure, but the problem on my SVD is the 510 connection cutting air flow to the 3 holes in the 510 threading of the Protank base.

 

[The Kid]

i drilled my beauty ring , all six dimples and as soon as my pt is a little tight i then screw up my beauty ring to tighten it up against the pt

 

[Recycled Roadkill]

i drilled my beauty ring , all six dimples and as soon as my pt is a little tight i then screw up my beauty ring to tighten it up against the pt

What size drill bit did you use for that?

 

[VaPreis]

I thought about drilling the holes in the top beauty ring of the SVD, but in the case of a Protank, it has no effect on the draw because the protank base lets air in from the slots in the side. I put my fingers over both holes on the beauty ring and the draw was unchanged.

The problem is that when a protank is screwed in tight on an SVD, the the SVD 510 connector blocks air flow to the 3 small holes above the threads on the protank base.

The beauty ring fix is just a more attractive way to deal with that problem.

 

[stylezuk]

i drilled my beauty ring , all six dimples and as soon as my pt is a little tight i then screw up my beauty ring to tighten it up against the pt

Same as what done to the Vamo and with a oring to bring the beauty ring up to flush mount.