These sets are addressed to Manfrotto® heads and DV Heads featuring the 577 Rapid Connect Adapter which uses the 3433PL Mounting Plate, as well as certain Sachtler® DV fluid heads using a compatible mounting plate.
Each set contains one custom M577-xxx adapter plate, the sturdy Hejnar PHOTO F63b Arca-Swiss® compatible Quick Release clamp and all necessary dowel pins, screws and Allen hex key for the installation.
The M577 adapter plate comes in three different lengths to cover a variety of needs in fore-aft adjustment.
The Conversion Plate Models
|Length:||3.5" (88.9 mm)|
|Weight:||4.2 oz (120 gr)|
|Length:||5.5" (139.7 mm)|
|Weight:||5.6 oz (167 gr)|
|Length:||8.75" (222.25 mm)|
Precision C.N.C. machined from 6061-T6 Aluminum, Black hard coat anodized surface. Made in USA
Hejnar M577-xxx adapter plates are compatible with Manfrotto® 3433, 3460, 3465 heads and 501, 502, 503, 504 and 504 Pro Video heads all using the 3433PL type sliding mounting plate.
The plates also work with Sachtler® DV-1, FSB 2, FSB 4, FSB 6, and FSB 8 fluid heads.
|The M577-550 conversion plate shown above, has identical characteristics but extends to 5.5" total length, enabling more fore-aft adjustment withing the 577 Rapid Connect Adapter.|
|Bottom view of the M577-550 reveals the hollowed out design. Similarities with the 3433PL mounting plate in regard of the security stop grooves and bosses are evident, which permit the quick insertion but restrict the slip off of the plate.|
The F63b Quick Release Clamp
|Jaw Length:||3.25" (82 mm)|
|Weight:||135 gr (4.7 oz)|
|Countersunk/threaded holes:||Three (1 x 3/8"-16 center hole and|
2 x 1/4"-20 outside 45 mm apart)
|Safety Stop Relief Grooves:||Two|
|Long Captive Screw Knob:||Stops at maximum opening|
|Material:||Precision C.N.C. machined 6061-T6 Aluminium|
|Color:||Black hard coat anodized|
|Made in :||USA|
As all Hejnar QR clamps, the F63b is compatible with Kirk®, R.R.S.®, Arca-Swiss®, and many other Arca style Quick Release plates and clamps.
Since it is an add-on unit, it can be used independently mounted on a ball head or other equipment at will.
|The clamp included in the conversion set is the updated classic Hejnar F63b with long black knob. The clamp is accompanied by one 1/4"-20 hex-socket flat-head screw 3/4" long and the appropriate Allen hex key.|
The F63b clamp features a Tongue-in-pocket design that protects internal parts from dust and grit. It does prevent the tendency of the moving jaw to hinge backward during clamping, It keeps the jaws aligned with the geometry of the plate and eliminate unwanted bending forces on the threaded stud.
You may seek more information about F63b in the Updated Hejnar PHOTO Quick Release Clamps Preview.
Mounting the clamp / Conversion Process
The conversion process is quite simple and completely reversible since it does not interfere with the Rapid Connect Adapter itself but is a mere sliding plate replacement.
By removing the current 3433PL plate from your head, you can insert one of the Hejnar M577 plates thus convert the head to accept the large number of Arca-Swiss® compatible rails, plates and other accessories. The F63b QR Clamp can be positioned in any four possible orientations by 90° using the anti-twist pins.
|Hejnar PHOTO M577-350 conversion plate with two 5 mm dowel pins installed on either side of the center hole for perpendicular mounting of the QR clamp.|
|The QR clamp in turn can be set with the screw-knob facing backwards (as above) or forwards according to users' convenience.|
|In the same manner, the dowel pins may be installed aside of the center hole in the longitudinal axis of the plate in order for the clamp jaws remain parallel to the mounting plate.|
|Once again the QR clamp screw-knob may be oriented facing on the left (as above) or on the right at will.|
|As previously mentioned instead of using dowel pins for the F63b QR clamp alignment on the M577-875 conversion plate, two 10-32 flat-hea screws may be used.|
|In this way the F63b QR clamp and the M577-875 conversion plate become a sturdier unit, while the reorientation of the clamp is still possible.|
|Pictured above is the Hejnar PHOTO M577-875 plate combined with the F63b QR clamp on Manfrotto 502 VH|
I hope you found the article useful, thank you for viewing.
All Photos used by permission: © 2014 Chris Hejnar / Hejnar PHOTO
Price and Availability:
Current price for any of the M577 plates w/ F63b clamp is US$ 110.00 (+Shipping where applicable) and are all available from the Hejnar Photo online Store.
If you are interested in the products above, do check the Recommended Sellers page for a valid Hejnar Photo discount coupon before ordering.
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