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heightec-PMI Pulsar

Version A Version B
Version A Version B

Overview


Version A
(D40)
(#256, 2093)

Front View: Closed Rear View: Closed
Front View: Closed Rear View: Closed
 
Front View: Open for Rigging Rear View: Open for Rigging
Front View: Open for Rigging Rear View: Open for Rigging

Technical Details

I acquired my heightec-PMI Pulsar D40, Version A from On Rope 1 at the 2008 Old Timers' Reunion. I acquired another pair in 2017 as part of Bob Thrun's collection.

Version A is 193 mm. tall, 91 mm. wide, 26 mm. thick, and weighs 228 g.

The shell is a tall irregular shaped stamping made from 4.2 mm. aluminum alloy sheet metal. A 15.4 mm.rope channel is formed in the upper portion of the left side and a smaller cam channel lies opposite on the right. A hole drilled through both sides of the cam channel accepts a 6 mm. rivet. The cam and cam spring are mounted on this rivet. The head of the rivet is on the front of the shell. The pivot is centered 51 mm. from the inside of the rope groove. There is a 4.9 mm. high, 7.9 mm. cam stop pin riveted to the shell. The handle below the cam has a soft "rubbery" hand grip molded into place. The hand grip has a cusp to support the index finger. A 15.0 mm. sling attachment hole is punched below the handle opening, and a 15.1 mm. hole is punched below and outside the first. A 15.0 by 17.9 mm. oval hole through both sides of the rope channel provide an attachment point just above the cam.

The cam is a plated skeletonized steel casting. The cam radius, measured from the pivot, increases from 38 to 52 mm. over an angle of 38°, giving a 25° cam angle. The cam has number of small conical teeth, all of which have their axes approximately perpendicular to the cam face. The tooth pattern is (1.2^3)^2(1.2)^2(B). The B stands for a small bar. A spring-loaded manual safety is mounted mounted on an axle riveted to the bottom center of the cam. The normal action of the spring holds the safety against the cam. The safety has a 12.8 mm. tall, 6 mm. diameter pin mounted on it for the fingers. When the cam is opened, the shell interferes with the safety, thus preventing cam opening. At full open the safety can be released and the spring will hold the tab against the back of the shell, locking the cam open.

The front of the rubberized had grip has "heightec" molded into it. The rear of the ascender is printed with "D40A," a book-with-an-"i" icon, "Ø8-13," "0508 027," "heightec-PMI," and "www.heightec.com."

Comments

Unlike most handled ascenders, Version A only came in a right-handed form. This is such an obvious blunder that I have to give their staff a Lemon Award.

The D40 is a well-made ascender that performs much like the Petzl Ascension. All sharp edges have been removed. The attachment points are simply holes in the shell, and although rounded they should have been beveled more; even so, I would consider their small radius too sharp for directly attaching sling ropes. They are probably acceptably rounded for webbing (or could be made so), but considering the proximity of the attachment points to the main rope, I would recommend using a small maillon for most attachments in order to reduce the risk of sling abrasion.

The handle is reasonably comfortable for me, but the cusp is set too low for my large hands. A file can fix this. The safety is moderately difficult to operate with one hand.

The lower attachment hole could theoretically have the same safety problems as the one on Clog Version A. The upper rope attachment hole is located very close to the main rope. A carabiner through the upper attachment hole will probably drag on the main line. Note that such a carabiner will prevent putting the ascender on or off rope, so one's climbing system must be designed accordingly.

This ascender has the same pit lip disadvantage as the Clog and other stamped frame ascenders. The shell is thicker that the one on the Camp Pilot, Kong-Bonaiti, and Petzl Ascension but it isn't reinforced as it is on those.

I'm not sure the extra holes are needed at the base - except for the Petzl Pompe, I've never found a real need for a second hole. Some people like them, though.


Version B
(D40LA & D40A)
(#1500, 2094, 2212)

Front View: Closed Rear View: Closed
Front View: Closed Rear View: Closed
 
Front View: Open for Rigging Rear View: Open for Rigging
Front View: Open for Rigging Rear View: Open for Rigging

Technical Details

I acquired my heightec-PMI Twist D42A, Version B from On Rope 1 in 2009. I acquired another right-hand ascender and another pair in 2017 as part of Bob Thrun's collection.

Version B is 103 mm. tall, 73 mm. wide, 38 mm. thick, and weighs 145 g. The right-hand Version B is identical to Version A except that Version B has a plastic cam safety. The left-hand Version B isn't identical to the left-hand Version A because heightec-PMI forgot to invent a left-hand Version A, and so it doesn't exist.

The rear of the shell is printed with "D40A" ("D40LA" on the left-hand ascender), a book-with-an-"i" icon, "¤ Ø 8-13" (where the ¤ represents a circle with a dot inside, not present on the left-hand ascender), "0209 184" ("1108 039" on the left-hand ascender), "heightec-PMI," and "www.heightec.com." One side of the handle (front on the left, rear on the right) has "heightec" in raised letters

Comments

Well, it seems that someone woke up and realized that people have left hands.

The cam safety is quite easy to operate with the matching hand, but awkward with the opposing hand. Most of the remaining comments for Version A apply to Version B as well.