SKU: 38552424983

Free Fall Apparatus Solenoid Release

Sale price$173.75 Regular price$193.05
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Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

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For Your Every Summer RSVP, with Code: SUMMER15

Description

Free Fall Apparatus Solenoid ReleaseThe Free Fall Apparatus Solenoid Release teaches mechanics and gravity, providing hands on experience for physics education. The cable from the solenoid is connected to the IEC timer and the stainless steel ball is held by the solenoid at an exact height from the lower platform. The instant that the timing is started, the solenoid automatically drops the ball. When the ball strikes the lower platform, the timer is instantly stopped. Kit Includes: 1 x

The Free Fall Apparatus Solenoid Release teaches mechanics and gravity, providing hands-on experience for physics education. The cable from the solenoid is connected to the IEC timer and the stainless steel ball is held by the solenoid at an exact height from the lower platform. The instant that the timing is started, the solenoid automatically drops the ball. When the ball strikes the lower platform, the timer is instantly stopped. 

Kit Includes:

  • 1 x Base plate with storage container for balls
  • 1 x Aluminium rail and 4x mounting screws for attachment to base plate, with adjustable plastic covered metric scale
  • 1 x Upper Platform with solenoid and socket for ball release
  • 1 x Lower Platform with STOP terminals
  • 1 x Ball, stainless steel, 20mm and 15mm diameter (nominal)
  • 1 x Cables for connecting solenoid and platform.  
  • 1 x Digital electronic timer (for SE.MF1871-401A & SE.MF1871-501A only)

Brand: IEC

Components: 2 balls 

Product Code Length Type Dims (lwh) Weight Manual
SE.MF1871-401 1m no timer 300 x 160 x 1140mm  2.4 kg See Here
SE.MF1871-401A 1m with timer 250x 150 x 1140mm 2.3 kg See Here
SE.MF1871-501 1.5m no timer 300 x 160 x 1640mm 3.8 kg See Here
SE.MF1871-501A 1.5m with timer 300 x 160 x 1640mm 3.8 kg See Here
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 38552424983

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4.4 ★★★★★
Based on 25 reviews
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Suzy Q
Lake Worth, US
★★★★★ 4
HIGH waist, correct sizing, ok fabric...NOT SEE THRU!! Cool pants though!
Fit Type: 31" Inseam, Size: Medium, Color: Deep Khaki
If it's a few inches ABOVE my belly button, inseam is correct... but then MED is SUPER baggy in the butt (I have a small butt maybe?) WELL MADE! NOT see thru!! Fabric is kind of stiff, BUT because it's a linen blend, may be beneficial for less wrinkles? 😃 Probably improve if washed. Also tried the small, belly/butt area is better, but super high and a little tight on me. NO off gassing 👏👏👏 Super versatile (dress up or down) Good price.
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Reviewed in the United States on April 23, 2026
W
Verified Purchase
Wrenn
Draper, US
★★★★★ 5
70%linen, 30% cotton pants
Fit Type: 31" Inseam, Size: X-Large, Color: Khaki
Linen cotton blend, soft & not see through. I'm 5'4" & 157 lbs, ordered a XL size & they fit perfectly, just a but long. Took me 8-10 minutes to hem, & now they are my go-to summer pants! Elastic + drawstring waist & wide legs look very stylish. I'm very pleased, will probably order more in a different color. I love the natural linen color, but since I see fabric thickness will try in white since summers where I live are triple-digits. GREAT PANTS for the price!
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Reviewed in the United States on April 17, 2026
C
Verified Purchase
C. M. Long
Port Orchard, US
★★★★★ 3
These are so-so
Good fit (I’m 5’8”, 215 pounds, and got an XL), cool and light fabric. I wore them on a recent trip to Walt Disney World, and they held up pretty well. They do get wrinkled easily, though, and I was somewhat dismayed to find that the fabric pilled badly in the crotch area (see photo). This was after only one laundering and one vacation where I wore them maybe three days. 😒 I have a feeling that they won’t last for more than one summer season. I expected better for the money, honestly.
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Reviewed in the United States on May 30, 2025
J
Verified Purchase
Jean Sembach
Los Angeles, US
★★★★★ 5
Read the size guide!
Fit Type: 31" Inseam, Size: Large, Color: Khaki
Got the light khaki Large. I am 5'7" and 180#'s. Loved the sturdy yet breathable material and the color. But too small. READ THE SIZE GUIDE! I didn't, and now I have to return and reorder. OK. Got the right size. Love 'em. Comfort and fit are great. Not crazy about having to line dry, but it's the price one pays for having natural fabrics.
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Reviewed in the United States on March 29, 2026
P
Verified Purchase
Pugs Chunk
Grantham, US
★★★★★ 1
RED & BLACK PANTS BLEED WHEN DRY AND WILL RUIN WHATEVER THEY TOUCH
Fit Type: 31" Inseam, Size: Medium, Color: Wine
These are very cute and flattering pants, but the first I wore them they turned everything they touched pink. The tops of my sneakers where they touched are now pink. The case of my cell phone that I slipped into my back pocket is now permanently pink. Apparently this is called “crocking” and occurs because there is a heavy excess of "unbound" dye on the surface of the fibers that was never properly rinsed or set during manufacturing. To fix this, I’ll have to go through a two-step process to strip away the excess surface dye and then chemically "lock" what remains. The needed specialized detergent and fixative products will cost another $20 (not to mention the pink sneakers and phone case). The process will take a couple of hours. I suspect the same dry bleeding would happen with other dark colors of these pants. Save yourself the hassle and buy a better, pricier pant in the first place. It’s very disappointing because they fit is great. They do stretch a size or two in the butt and thighs but the waist doesn’t stretch, which is good.
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Reviewed in the United States on March 25, 2026

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