Hi, we like your jig design, when we built ours we did build one with the hydraulic system but we found that it was difficult to measure the amount of force we had going through the frame, we changed it to the trapezoidal lead screw which gave us much more of a sense of impending frame doom allowing us to stop the pull when needed. We have had great success with it but carbon frames are another beast.
I've stopped using it on carbon frames now, it killed a couple so thought best to try them other ways. I know what you mean with not much feed back. I tend to use it as a last resort & warn the customers of what can happen. Have a bit of a feel for it now & know when poop is about to hit the fan. The thing still scares me and I try to stand well back. Cheers for the comment 👍
Better way . Put old cups in the bottom bracket, place a bar through the cups. Drill a hole in two ceiling joist and hang the frame by the bar through the BB. The bar runs through the hole in two joist. Drill a hole through the seat post from the side. Secure a steel 1” x 1/4” U bracket secured to a slip hammer or secure a 1” round rod to the U bracket. Bolt or weld a plate to the rod. Use a 5 pound weight as a drop weight
I don't remember Cyclus having one then. I'll take to take a look would be great to see it. I know Phil has a nicely made screw type one. I always wanted to go hydraulic.
Yours is the first I've seen successfully using a hydraulic cylinder rather than a ballscrew. Thanks for sharing the walkthrough.
Excellent work ! Thank you !
Hi, we like your jig design, when we built ours we did build one with the hydraulic system but we found that it was difficult to measure the amount of force we had going through the frame, we changed it to the trapezoidal lead screw which gave us much more of a sense of impending frame doom allowing us to stop the pull when needed. We have had great success with it but carbon frames are another beast.
I've stopped using it on carbon frames now, it killed a couple so thought best to try them other ways. I know what you mean with not much feed back. I tend to use it as a last resort & warn the customers of what can happen. Have a bit of a feel for it now & know when poop is about to hit the fan. The thing still scares me and I try to stand well back.
Cheers for the comment 👍
Better way . Put old cups in the bottom bracket, place a bar through the cups. Drill a hole in two ceiling joist and hang the frame by the bar through the BB. The bar runs through the hole in two joist. Drill a hole through the seat post from the side. Secure a steel 1” x 1/4” U bracket secured to a slip hammer or secure a 1” round rod to the U bracket. Bolt or weld a plate to the rod. Use a 5 pound weight as a drop weight
Paul Vandelay had one of these operational just before COVID 19 hit . Cyclus had a handle actuated one out in 1996 . My old boss had one .
I don't remember Cyclus having one then. I'll take to take a look would be great to see it.
I know Phil has a nicely made screw type one. I always wanted to go hydraulic.
Nice vid and nicely made piece of kit. Jealous of your workshop.
Thanks 👍
Nice bit of kit. Impressed! Strangely satisfying watching the removal video too. Subscribed hoping for more :)
Awesome, thank you!
Next removal I'll be sure to film 👍
reeet urr arrr booooorrrrrrr