Ok, so I had time to tinker and here are my findings. I apologize for the large pics, but it doesnt seem like my thumbnailed pics (like my review post) are enlarging to show detail. If the thumbnails are working please let me know. Otherwise...hers some big @$$ pics. :lmao:
First, here are some pics against other axles. I had a set of VP scx10 aluminum housings (which were on the rig I'm installing the NC60's) and a stock set.
Also here is a side view pumpkin comparison against an AR60. Exactly the same.
Now as I mentioned I was determined to get the UD gears to work. After tinkering, I noticed that when I installed my thru-pin style pinion...the gritty feeling was the worst. In fact even the axle shafts would not be straight. Then I installed my non-thru pin style pinion and everything lined up and PRAISE THE SUN the gritty feeling was gone. Built the axle, and everything worked perfectly. So what I determined was that pinion was bent or in poor shape and was causing the binding/gritty feeling. Makes sense, as the housings are perfect. I ended up finding another thru-pin style pinion and it dropped in easily. Rest assured the binding was NOT the housings fault but the pinion. "thumbsup"
Continuing with the rear axle, the rear lockout situation is ever so minute in the tolerance. I borrowed a set of VP lockouts just to see if they fit differently than my stock plastics. Nope, holes still misaligned. Funny thing is, it's really only one side that the "bad" one. If you are looking at the pumpkin, it is the right side that is off by a hair. It is the lockout I had to enlarge the holes to get to fit. The VP did line up either. However on the left side, both lockouts lined up considerably better and did not need altering. Maybe moving the left ever so slightly will make hardware go in with less effort/risk of stripping. The right side needs a larger adjustment.
Here in the picture below you see the white of the SLS material which is where the hardware was bottoming out before I altered my lockout. Also you see the left side which is fine, the hardware engaged/lined up and went in with minimal effort.
Now to install these bad boys on a scx10 chassis. Here is where things come up. I will say that these to me, are not a direct 100% drop in replacement for stock scx10 axle housings and not sure they were meant to be, but I went in under the impression they would be more or less.
So I was installing the front axle and when I went to install the shocks and links I ran into these things. I am using the NC60 pan hard mount and stock plastic axial ar60 link mounts for the other mount locations. Each are installed with the M3 bolt and nylon lock nut as they have been on AR60s.
I installed the driver side shock and lower link on the stock axial mount just fine. The passenger side with the NC60 mount the lower link would not bolt right up. The reason is because the NC60 mount base has more material (more strength?), which pushed the nylon nut further out away from the axle and taking up clearance room, which interferes with the link rod end.
You can see in pics below what I am talking about. The axial mount is first and bolts right up, the NC60 there was not enough clearance for the rod end and a nylon lock nut to allow proper alignment of the hardware. I ended up using a non locking nut here and put thread locker. Problem solved.
I am using traxxas rod ends so not sure if axial rod ends are thinner and allow the nylon nut to clear.
Now besides the UD issue I had and the lockouts, the rear bolted up without the lower link issue since I was using stock axial ar60 mounts on that axle.
This was the next thing I came across. The shock mount locations are more inboard than the scx10. So if you are mounting these axles to a scx10 chassis and are trying to use the stock shock upper location and the lower double shear capture of the shock mounts it causes the shocks to pinch.
I measured the shock location and it is approximately 3 3/8" center to center on the NC60. But on a stock axial axle the center to center is more like 3 7/8"
Here is the front pinched
Here is the rear pinched
The rear cycled ok, but the front did not cooperate and the springs would grab the chassis on the up cycle. In the end, I mounted the shocks on the outside of the mount and this fixed the issue. I will point out that I am currently installing this on a rig with 1.55 growlers which are 4.20" tall on rc4wd voids with wide hexes. Very short. When the steering is locked, the tire nearly touches the shock now that is is outboard. This will be a bit worse for those running larger 4.5"+ tires unless you run wide hubs. I will try some other wheels with TSL XLs or similar.
Now if you recall I have a set of VP scx10 housings, which have the VP scx10 lower mounts. I tried to install these to see if I could get the shocks to fit better but due to the chub/lockout on the NC60 being as far outboard without interfering with the AR60 style mount you cannot.
Another thing to note is that if you install the shocks on the top hole of the mount it will raise your rig ever so slightly. It is difficult to install on the bottom outside of the mount to lower it below the center line of the axle because the lower shock bucket interferes. Maybe HELIOS/Bowhouse can make a mount that is ONLY the lower mount location, but still captures both axle hardware. Basically remove the top mount. "thumbsup". In fact, I may just cut the upper mounts off myself to see how that helps.
This is a non-biased review with positive criticism and I am simply pointing out my findings and how I feel they could be better. I look forward to running them soon.