Am I supposed to put two nuts on each screw directly on top of eachother… so that all four nuts are all on the same side (2 directly on top of eachother for each screw)? If so it leaves very little room for the acorn locking nut.
As for the acorn locking nut how am i to tightent this securely? there is very little room due to the two nuts directly on top of eachother on the underside of each screw.
As for step 6 of the above link assembly guide… am i actually drilling the servo horn into the spot indicated? It seems an actual drill might do damage?
In the plastic sleeve where the servo is found there are plastic bracket things with holes in them along with the phillips head screws. Where do those plastic bracket thingys go? i dont see reference to them in instructions?
back to step 2… does anybody else have a little gab between the two spacers we are supposed to join… the gap is ever so slight… perhaps i have tightened something too much or done something wrong?
re. #2(a), if you look ahead at figure 9 you can see the answer to your question is yes the nuts are stacked. I would guess this is to set the height of the servo output horn (so the teeth things at the higher assembly stage line up with the other toothed part).
I don’t know about the acorn nut and screw length thing… there is always some tolerance in materials and hardware. if several of the #4-40x5/8" screws are supplied it may be helpful to sort through them and pick the two that happen to be on the plus side of tolerance, and similarly pick the 4 thinnest #4-40 hex nuts (if more than 4 are supplied).
re.#4, yes you are using the 1/16" drill bit to open up the existing holes in the servo horn. as supplied these holes are too tight for the #2 sheet metal screws used to fasten parts to the output horn. just go straight in and straight out though, don’t wobble the dril around and make the holes a lot bigger than the desired 1/16".
I believe it was Beth who has previously suggested to folks in the forum to read through and study the entire assembly tutorial prior to actually starting to put stuff together to try and get a good mental picture of how each step of the assembly relates to the ones before and after it. The individual photographs in each step try to illustrate what is thought to be the important perspective for any particular assembly step however there is always going to be some detail or angle that people could question. This is why it helps to look over the whole tutorial as the pictures as a set show almost every assembly detail even if the particular one you are looking for isn’t necessarily in the figure associated with the step you are working on.
Keep in mind that the rubber bushings you install onto the servo in Step 4 WILL squish down a bit.
The drilling is just to make the holes at positions 2 and 4 on the servo horn easier to drive the tapping screws into. You certainly don’t have to drill. Just keep in mind that if you do not, the screws will be more difficult to seat.
Not mentioned in the instructions because they’re not used. Most of the items in that bag aren’t used, in fact - we just use the rubber bushings mentioned in Step 4.
I’m really not sure what to tell you to make this process easier for you without repeating myself. Just take it slow, and always look at least a step ahead before you do anything. If you’re confused on one step, the next might help you understand.
You will need a 3/32" hex tool, included in the gripper kit, a Phillips screw driver with a #2 tip, a pair of needle nosed pliers. The 1/16" drill is optional. Note you do not need to use a drill, just get one of those 1/4" hex shaft drill bits and use your hand. It takes like 5 seconds.
You remember those two picture comparisons from childhood. Where the instructions tell you to find the differences in the two images? Well all you need to do is assemble a step, and compare the real part to the images. If it doesn’t look right change something.
I get from the tone that you are frustrated. Since we can’t create a different custom assembly guide for a product that is discontinued the only option for you is to build and ask questions. We will bend over backwards to help you. But there are limitations to what we can do.
Thanks for all the responses that was very helpful… I am not frustrated with the robot per se, I enjoy the challenge, indeed without it I would lose interest very quickly… just finding my feet in this new mechanical world… cheers
