We just got our AndyMark Servo Shifter gearboxes today, and we were trying to assemble them, but we couldn’t figure out what to do with a couple of the parts. There are 2 retaining clips and a plastic washer for each gearbox. Where do they go?
Also, if anyone has assembly tips or pointers we should keep in mind, let me know. Thanks!
I would refer to the drawings on the andymark site.
Those didn’t help. They don’t show where those two parts go. If you know of a drawing that does, please point me to it.
Hmm… I can’t open it here at work, but there is a step assembly. Also, another team made a really detailed drawing I saw here a few weeks ago. Maybe they can help.
If you haven’t looked in the .stp assembly, I would look there first.
Also, everyone else… I know so many of you use these shifters, one of you has to be able to help.
We are using the Gen2 AM shifter but with cylinders. The retaining clips are for the small CIM motor. After you put the gear on there, you use the retaining clip, so the gear doesn’t fall out. Also, it will be helpful if you place three washers for each small cim motor before placing the gear there (those washers were supplied in KOP transmission previous years). As far as the “one washer” goes, I am not sure where that goes. The best person to ask would be Andy. Since he is very busy at this point, I would suggest you to send a PM to him. You will get a very fast response back. Good luck Jeff.
Thanks Arefin. I’ll ask Andy about the washers…
ha ha jeff cant get the new trans together!! but seriously i have no idea. however, everytime i put stuff together i always have “extra” parts. btw, tell me how those bad boys work out my team didn’t want to use them because they fear anything new and involving them having to change.
I’m afraid I can’t offer too much advice, but our team is using the AM Servo Shifters. The retaining clips, as mention previously, are for the gears on the small CIMs. However we also had a few “extra” parts–hopefully that doesn’t come back to haunt us.
As far as performance, tonight was our first chance to drive and I was amazed at how well they performed. After previous threads about slow shifting with the servo (that I read AFTER we purchased the transmission) had me worried, we found that the shift was very smooth and balance between torque and speed was excellent. We definitely have more testing to do, but I was very pleased with the product.
I remember when packing a few of these back in December that a few extra spacers were put in some bags that were going to be distributed with orders.
hey, i have another question about the gearboxes,
there is no room for us to be able to mount the gearbox lever with the wheels, so we had to mount the gearbox about a foot higher than its ideal mounting spot. now we are having problems with the chain, first we had to mounted upside so we could hang it from the top of the frame and to avoid the chain from grinding against the long (15 tooth?) gear. but the chain is also grinding against the spacers and screws in the corners of the boxes. is it safe to pull them out? what are other things we can do to stop the grinding or ease it so there isnt as much resistance.
thanks!
Based on my understanding of your question and the AndyMark Gearbox construction, the answer is no, those are what hold the transmission together. A possible fix would be adding a sheath of some sort of plastic tube, made out of something like Nylon around the standoff and checking for wear during competition, and replacing as necessary.
Look at the transmisson, you’ll see that there are some extra holes that can be used to relocate the spacers and bolts to clear the chain. The attatched drawing has circles around possible alternate spacer mounting holes.
we have teh servo transmissions, and since it is the servo side that the chain is hitting, im not sure if moving the screws is possible.
Jim is right here, those extra holes are for alternative places to put the spacers in case your chain is wanting to run into them. Also, if you can’t find a hole that gets the spacer out of the way, you could drill another set of holes.
As for the mystery white washers that Jeff was referring to in the original post, I will say here what I told him over a PM (or was it an email, I forget)…
Those white spacers are for customers who want their gearboxes tight. Some folks really don’t like the side to side play that I prefer on the output shaft. So, they send an email or they call, asking for more of the small nylon washers (one for each gearbox). These can be put onto the output shaft between the sprocket and bearing on the outside (non-motor) wall, making there be absolutely no lateral play in that shaft. Maybe 10% of users want this. To me, it is easier just to throw another washer in with each loose hardware pack to make these folks happy.
Take care all,
Andy
You might be able to get a flathead bolt to replace the original, and countersink the hole in the transmission, to get it to fit. then it should clear the servo easily?
Although I don’t know exactly where your chain is running, so it’s hard to offer good advice.
How about you use a Paint program to draw your chain location on this drawing, then post the modified drawing. Then we can see exactly what your problem is?
ill post actual pics as soon as i can.
thanks for the help, on one side we were able to move it to an existing hole closer to the gears, but the other side had to be drilled. it was a quick fix.
thanks again
we had some trouble today with our servo shifers. one of them doesnt stroke as far as it should and doesnt shift. the other one still works fine. is it possible to burn one of those out? and where would we look for a new servo?
