Very good assembly video and thought out design. Purchased two of them. I did notice that there seem to be NO centering spacers on the idler pulley between the axle forks. The idler pulley bearings are recessed into the ends of the idler pulley. Without any means of centering the idler pulley, will it not rub on the pulley sides on the forks?
Not unless the forks are compressed too much, so be careful of that during assembly. I had to shorten the idler pulley my a mm or so from original to prevent this issue with some prints. You can use spare thin spacers if you want, as there are usually extra in my kits, or print more. So far, not having spacers has not been an issue. Make sure the band from the sanding spindle pulley to the idler pulley is lined up so that it doesn't pull to one side or the other. Let me know if you run into any issues, especially if adding the thin spacers doesn't help.
That is brilliant. Tyre truers are becoming hard to come by at the moment. At least for us in New Zealand. I designed and 3d printed my own truer also. I love your design, it looks very thought out
The motor pulley shaft hole needs to be a thru hole. When using the slower RC motor oprion the motor pulley will not line up with the big drive pulley. Also the motor mount holes need to be clearanced for the 3mm screws. Nice design with a few exceptions. Built two of the newer ones.
Making the motor pulley have a through hole is easy enough to do, either with a drill bit or a new model. I'll go ahead and update the model for a through hole. It hasn't been an issue for me, but I can see how it could be. For the motor mount holes, it's just plastic, so also easily drilled or reamed out, but I usually just force the screws through, or use the screw as a drill to open up the hole a little more. Again, hasn't been an issue for me. A lot will depend on the accuracy of the prints as well. I've recently found how much the material can make a difference. I had been getting great, functional prints with the PLA I had been buying, but recently got a different brand. Without changing anything else, the new prints were much cleaner and more precise, enough that the square nuts just slipped right in, and screw holes were all the appropriate size. Not that any of this affects the performance of the machine when assembled, but it's an interesting side note about FFF printing, and why I designed a lot of the parts the way I did, to accommodate those differences in print precision. Thanks for the feedback! Don't hesitate to share any other ideas or suggestions for improvement.
Excellent assembly instructions 👍
thanks :)
Very good assembly video and thought out design. Purchased two of them. I did notice that there seem to be NO centering spacers on the idler pulley between the axle forks. The idler pulley bearings are recessed into the ends of the idler pulley. Without any means of centering the idler pulley, will it not rub on the pulley sides on the forks?
Not unless the forks are compressed too much, so be careful of that during assembly. I had to shorten the idler pulley my a mm or so from original to prevent this issue with some prints. You can use spare thin spacers if you want, as there are usually extra in my kits, or print more. So far, not having spacers has not been an issue. Make sure the band from the sanding spindle pulley to the idler pulley is lined up so that it doesn't pull to one side or the other.
Let me know if you run into any issues, especially if adding the thin spacers doesn't help.
That is brilliant. Tyre truers are becoming hard to come by at the moment. At least for us in New Zealand. I designed and 3d printed my own truer also. I love your design, it looks very thought out
Thanks for the kind words! I'd love to see your machine. Have you posted photos of it anywhere?
Very nicely thought out and executed guys 🥇
A very neat tool !
The motor pulley shaft hole needs to be a thru hole. When using the slower RC motor oprion the motor pulley will not line up with the big drive pulley. Also the motor mount holes need to be clearanced for the 3mm screws. Nice design with a few exceptions. Built two of the newer ones.
Making the motor pulley have a through hole is easy enough to do, either with a drill bit or a new model. I'll go ahead and update the model for a through hole. It hasn't been an issue for me, but I can see how it could be.
For the motor mount holes, it's just plastic, so also easily drilled or reamed out, but I usually just force the screws through, or use the screw as a drill to open up the hole a little more. Again, hasn't been an issue for me.
A lot will depend on the accuracy of the prints as well. I've recently found how much the material can make a difference. I had been getting great, functional prints with the PLA I had been buying, but recently got a different brand. Without changing anything else, the new prints were much cleaner and more precise, enough that the square nuts just slipped right in, and screw holes were all the appropriate size. Not that any of this affects the performance of the machine when assembled, but it's an interesting side note about FFF printing, and why I designed a lot of the parts the way I did, to accommodate those differences in print precision.
Thanks for the feedback! Don't hesitate to share any other ideas or suggestions for improvement.
I uploaded a new motor pulley, in case you feel the need to print one with a through hole.