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Thread: Theoben Zephyr Piston for BSA Airsporter-S or Mercury-S

  1. 29-11-2011, 07:13 PM #1
    Hsing-ee's Avatar
    Hsing-ee
    Hsing-ee is offline may also be employed in conjunction with a drawn reciprocation dingle arm, to reduce sinusoidal repleneration
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    Theoben Zephyr Piston for BSA Airsporter-S or Mercury-S

    These pistons are fitted with a head with the special Theoben 'Zephyr' groove pattern cut into their face to channel air into the transfer port and reduce piston bounce.

    £25 including post for a piece of functional tuning history. May fit other Airporters and Mercuries.
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  2. 30-11-2011, 05:13 PM #2
    look no hands's Avatar
    look no hands
    look no hands is offline Even better looking than a HW35
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    Yes please Alistair, I'll take it, let me know payment details please.

    Cheers

    Pete
    Far too many rifles to list now, all mainly British but the odd pesky foreigner has snuck in
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  3. 30-11-2011, 06:28 PM #3
    Hsing-ee's Avatar
    Hsing-ee
    Hsing-ee is offline may also be employed in conjunction with a drawn reciprocation dingle arm, to reduce sinusoidal repleneration
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    Sold To Pete!
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