RCU Forums - View Single Post - Hirtenberger .61 with a sliding piston carburetor

10-21-2010, 08:02 AM

#25

DarZeelon

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RE: Hirtenberger .61 with a sliding piston carburetor

Quote:

ORIGINAL: ABORH

...Is an OS #8 glow plug sufficient? It has a plug with an idle-bar currently, but I have never been a fan of them.

Aborh,

The OS #8 has a correct heat range for this engine - a bit on the high side, though.
The OS #10 (formerly the A5) is what OS subscribes for engines over .60 in displacement.

But this plug and all other normal OS glow-plugs, are of medium length.
If this plug is fully tightened into the head of your HP engine, it will remain slightly recessed; i.e. sunk into the head and shy of the combustion chamber surface.

This is even the case in all OS mid-large engines and I have no clue why OS chose to do so.

Any other full-length (i.e. 'Long') mid to cold glow plug will do the job right.
Rossi R4, or R5 are good, as is the Novarossi C-6S. The Fox standard and 'Pro' long, the Traxxas Super Duty long and many others, don't cost nearly as much as the OS and do have the right length.

Your engine is schnürle ported and needs no idle-bar to run well.

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