Space is the main consideration. But of course, we also realised that the normal chain is strong enough for lifting of cones, and it is lighter too.
Thanks for the reveal!
Could you tell me what song youre using for the reveal video?
Hustler by Zayde Wolf
@AppleDavidJeans
Hi… this is to clarify on your official Q&A about pushing or un-nesting an opponent’s cone from the bottom.
Think You have misunderstood how 8059J defend against the stationary goal.
8059J does not push or descore any cones from the bottom. What it does was to rest the c-channel on the stationary goal before the opponent stack any cones on it. It prevent the cones from nesting fully, it does not push the cones up.
So… yes… it is legal.
I already noticed that before I posted. I merely used that bit in the video to illustrate the set-up in my scenario, different to what your robot does. I should have clarified the use of the video to illustrate what was going on in my situation. I’ll edit the Q&A to add a note under the vide clarifying that.
so then if I use a high strength chain and sprocket, it won’t fit?
That depends on your design.
Unless you’re attempting to copy them…
lol my design has a chain bar something like theirs within a rd4b, however, no… But then its like the general trend has a chain bar within the lift, so I just wanted to know if I would have to use normal sprockets for my design as well
Should high strength chain be used, the system might fit, however, the chances of cones brushing against the chain bar will become almost too high to drive the robot with confidence (just very slight bending of the lift may cause accidental descoring) .
The space at the front has been maximised to quite a large extent (the reverse double 4 bar is already as close to the towers as possible on a 17.5" wide base.)
thanks! ok
Think he meant 17.5" wide…
That’s right. Thanks for pointing out the trivial mistake.
Thanks again 8059 for another awesome reveal! Singapore Robots seem to be setting a very high standard this early in the season, as they aways do 
thank you so much.
Hope the reveal has helped
How dose the lift work on 8059A ?
It is just a simple 2-motor mini 4-bar.
@meng Thank you that’s what i thought but i couldn’t see in the video.
Think you can have quite a good look at it between 1.40 to 2.08min of the video
I have a pretty good look at the 8059A robots lift but how is it powered