I have center shafts that have a 4mm thread on either side of the yoke, and my axles/tranny output shafts have 2.5mm holes through them. Would it be best to use 2 4mm setscrews from either side that press into the hole of the shaft, or a single setscrew/pin style shaft that screws in from only one side of the yoke and the pin goes straight through the shaft. Usually I would prefer a pin, but in this case the other side of the yoke has a 4mm threaded hole that does not support the 2.5mm pin (the pin just floats in the middle of that hole without touching) Which method would be stronger?
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Center shafts... Dual setscrews vs pin?
- Thread starter norco kid
- Start date
meatmonkey
I wanna be Dave
I take a Revo 4mm threaded through pin and cut it down so it barely protrudes through the shaft when fully tightened. I then take a 4mm cup-pointed grub screw and thread it into the opposing side to lock the end of the pin in place.
Even then, you can occasionally shear the pin or even shear the shaft at the pin hole.
Even then, you can occasionally shear the pin or even shear the shaft at the pin hole.
WHITE-TRASH
I wanna be Dave
I run the same basic setup on one of my rigs. I use 2 traxxas pins cut short on each side. It works, as does the single long pin on another rig. Not sure you can really good wrong either way.
winnerone23
I wanna be Dave
If and when I have the ability... I run grub screws and tighten them into the hole.
I have had a single 4mm grub screw, into a hole thru output, last longer then a pin thru. This is on a wraith drive train, 3500kv HD on 4s. Been running like that for 2yrs.
Maybe the set screw backs out a little or gets loose. Then all the pressure goes straight to the pin in the hole and breaks your output off..
I would rather the drive shaft spin loose.
I have had a single 4mm grub screw, into a hole thru output, last longer then a pin thru. This is on a wraith drive train, 3500kv HD on 4s. Been running like that for 2yrs.
Maybe the set screw backs out a little or gets loose. Then all the pressure goes straight to the pin in the hole and breaks your output off..
I would rather the drive shaft spin loose.
Thanks, I hadn't thought of that.. I guess I'll stick with the dual setscrews for now.
