Measurements
The Offset TCUs feature a wider cam face when compared to the Alien Offsets. However, the Aliens are a 4 lobed unit.
Figure 2.
Refer to Figure 2 for the specific items being measured on Offset TCU in Table 3 below. Note that we did not have the #1/2 size available to measure.
Table 3: Offset TCU Measurements
| Offset TCU Size |
Total Cam Width (D) mm |
Cam Lobe Width (A/B/C) mm |
Overall Length (mm) |
Total Wieght (grams) |
| 00/0 |
35mm |
5/6/5mm |
134mm |
46.7g |
| 0/1 |
35mm |
6/6/6mm |
135mm |
48.0g |
| 1/2 |
Not available |
Not available |
Not Available |
Not Available |
| 2/3 |
38mm |
6/9/6mm |
150mm |
60.6g |
| 3/4 |
38mm |
6/9/6mm |
150mm |
64.5g |
When you compare them to other similar camming devices we had on hand, you start to see some weight saving:
Table 4 : Comparative Camming Device Measurements
|
Camming Device
|
Total Width (D) (mm)
|
Cam Lobe Width (mm)
|
Overall Length (mm)
|
Total Weight (grams)
|
|
#00 Metolius TCU (standard)
|
33mm
|
5/6/5mm (A/B/C measurement above)
|
145mm
|
57.1g
|
|
#1 Metolius TCU (standard)
|
38mm
|
6/9/6mm (A/B/C measurement above)
|
146mm
|
68.0g
|
|
Offset Red/Yellow Alien
|
35mm*
|
5mm*
|
200mm
|
79.9g
|
|
Standard YellowAlien
|
35mm*
|
5mm*
|
195
|
76.5g
|
| .4 Camalot C4 |
42mm |
6mm** |
190mm |
82.5g |
| #00 Camalot C3 *** |
Not available |
Not available |
Not available |
57g *** |
| #1 Camalot C3 *** |
Not available |
Not available |
Not available |
62g *** |
* All the Aliens I have measure to date have these dimensions. They all have 4 lobes, each with a width of 5mm.
** The Black Diamond Camalot C4 has 4 lobes, each measuring 6mm in width.
*** Measurements taken from the manufacturers website. Cascadeclimbers.com did not have gear on hand.
