Next up is the VFD transmission which, if you know your alphabet, is Step D. Who says RC isn't edumacational?!
What's up D Bag?! :lmao: I also have the 21% OD gears that I will be installing right away. I like OD in my trail rigs. I'm a rebel like that.
I know lots of people were outraged that Vanquish downgraded the transmission from Pro spec to kit spec. One of the downgrades is moving from machined gears to these sintered gears. But these sintered gears are chunky and they should handle any power you throw at them. I still think they'll wear faster than the hardened, machined gears though. Correct me if I'm wrong, Brandon (or any other VP employee that may stumble upon this).
Some, but not all of the gears have the tooth count pressed into them which is a nice touch.
The manual also shows the length of some of the gears so that there's no mistaking which gears you should use and where. Nice touch. The manual is very well done with few errors that I spotted. It's a great job for a company that just started making kits.
This made me very happy. All of the many bearings in the VFD transmission are the same size. Yes! "thumbsup" This is the way it should be whenever possible IMO.
I should have taken OSRC's queue here and removed the seals on all of the inner bearings for less drag. I'm lazy though so that did not happen.
Another source of outrage is that the motor plate was downgraded to plastic. I agree with this one. All RC motor plates should be metal, period. End of story. I did not upgrade to the metal plate because the only one I could find is the clear light weight plate. I'd want black on the transmission so it blends in. I also didn't want to spend $40 on a motor plate. Maybe down the line I'll change my mind. Anyway, the stock, plastic motor plate is thick plastic which, again, is a good composite. I don't foresee any issues here.
The transmission standoffs were also downgraded to plastic. As you can see in the photo, the lower one needed some trimming which was rare with this kit. The flashing and remnants of sprues were very minimal throughout this kit.
I will admit that, for a second, I was outraged at what I thought was a downgrade. I found the spur gear mount plate was plastic! But then I quickly remembered there were parts left in the bag. Thankfully, there's an aluminum version in there. Make sure you use the aluminum part.
I'd be curious to know why Vanquish went through the trouble of having this piece molded in plastic when it seems every VFD transmission, even the standalone kit, comes with the aluminum plate.
Other plastic parts are included. The shifter transmission cap is very cool. You can also see the plastic spur plate and the plastic spur shaft spacer. An aluminum spacer is included so use that. The plastic washers, I believe, are to use when you don't have large head screws for mounting the motor. I used the included wide head screws instead of these washers.
This alternate cap was also included. I did not realize it was even included until after the transmission was built or I would have used this one. I'm using the version that says "VFD".
The included pinion gear is 15T and it looks to be machined and hardened.
For motivation, I am using the Castle Mamba X and, for the first time, I'm trying one of their Slate motors. I chose the 2850KV.
I was shocked by the length of the motor wires when I pulled the Slate motor out of the box! Subway got nothing on this footlong! :shock: But they come with pre-soldered bullet connectors which is nice. The Slate green motor housing is much better looking than Castle's booger green on their other motors.
Here are the stock gears and bearing plates versus the 21% overdrive parts. I hope anyway. Neither the kit nor the 21% OD gear/plate set come with instructions. It's on you to figure out what to use and where, but by process of elimination and ensure the transmission spins, you should be able to figure it out.
The transmission housing is made of multiple "layers". The first piece screws into the plastic motor plate. At this stage the spur shaft and standoffs flop around. That will change.
With the Castle motor installed, in the orientation that I chose, I had to finagle the transmission housing parts around the terminals.
Here is the assembled transmission with the two overdrive gears installed along with the rest of the output gears.
The overdrive set includes this pin and I wasn't sure what it was until I checked out Topher's build thread. I completely missed the hole in the plates before then and I'm not sure how. This little pin helps to align the plates which is a nice addition to ensure the transmission stays smooth.
Here are the gears after they are greased and the bearing plate installed on the other side. You can see the threaded hole in the bearing plate for the pin that I forgot to install at this step. I installed it before closing up the transmission.
At the end, I wanted to finish tightening the screws in the standoffs when I realized they are hidden behind the spur. I had to remove the spur to tighten these screws.
When you first start building this transmission, nothing seems contained and it feels so spindly, floppy mess. As you add layers, the standoffs, bearings, bearing plates, bearing plate pin and the housing start locking together to make a really solid piece. And there are a ton of bearings and a lot of gears so there are many features where things can go wrong at any step of the engineering or manufacturing phase. But once you finish the assembly, everything is fixed and tight and the transmission is very, very smooth. I was definitely impressed with this. Axial should take note of how the Capra transmission should have turned out.
As mentioned, you can see the spur gear laying aside. I reinstalled it at the very end.
I obviously haven't been able to run this transmission at this point, but I have to say it's very stout and very smooth. Impressive design. Well done! "thumbsup"
