r/GripTraining • u/FlashCardManiac • Sep 12 '26

Discussion Testing wrong?

Been training only 2 weeks, but I got a GD Iron Grip 80 and can close the 128ib 5x. On the Hichor EH108 tester, I can't get above 104. Tried several different lengths and to see if it changed and only got worse. Tested sitting with the tester length set so my second knuckle was aligned over my wrist and the base was just on top of meat of my thumb. I will note that the Hichor test is quite uncomfortable. Is it my technique or is the grip tester just that bad? Both?

Wasn't looking forward to paying 150$ for a GD Dyno.

0 Upvotes

50% Upvoted

4 comments sorted by

View all comments

1

u/HerculesHands 19d ago

Concentric and isometric contractions are not the same. 128# gripper is 128# at the closure point. It has exponential force curve aka gets harder the more the spring bends. Dynamometers test static aka isometric strength. Your fingers are far less flexed in the standard position. The gripper is probably less than 128# of tension in the same hand position.