SCR Pro Upgrade Insights_3rd Precision Gear Mechanics in Action

We are Smithmaster Co., Ltd., a company that has developed and is currently exporting the RC car “Smithmaster” to countries such as the United States, Canada, and France. 

Today, we would like to introduce a video review by a YouTuber named “Mattew SR” about 12s runaround continues from previous posting

Precision Gear Mechanics in Action:How’s the Cardan Condition Looking?

So, I took a good look at the cardan, and I’m happy to report it seems to be in pretty good shape, with just a few minor signs of wear here and there. All the pins are nice and consistent, which is definitely a thumbs-up. I also ordered a part from Bricovis, and it’s secured with a CIR clip, kinda like what you see on MCD models. That said, I have to confess I’m running into a few challenges while trying to disassemble it.. 

What makes precision gear mechanics special?

When working with precision gear mechanics, a careful adjustment is key to separating parts without causing any damage, especially with the D.I. in play. I can’t help but notice the helical pinion—it’s in perfect shape with 13 teeth, which is pretty cool! These helical gears really shine because they have more material making contact when they engage with the D.I.F. crown. This leads to way less wear and tear compared to straight gears. All in all, this gear system is designed really well, making it not just effective but also quite appealing.. 

What makes the DIF’s design so durable?

Let’s dive into the DIF’s design, which really stands out for its sturdiness. First off, it’s got some seriously tough internal components, featuring robust gears and some non-moving planetary bits that are just impressive. One cool thing is the use of helical gears—you don’t see those every day and it just screams durability. Plus, instead of your usual washers, they opted for square spacers in the disk grooves, which helps cut down on satellite friction in the DIF. All in all, you’ve got to admit that the build quality is pretty appealing!. 

How to Check Differential Components?

Let’s dive into the differentials! I’m planning to take everything apart and really inspect the components. First up, we need to check the bearings and the spider gears. The good news? The spider gears aren’t showing any signs of movement or wear, which is awesome! While the joints have seen some wear, the solid state of the spider gears is definitely a silver lining..

What are differential setup components and their issues?

So, let’s dive into those small adjustment rings! At first, they puzzled me when I saw the pictures, but I totally get it now—they’re crucial for properly setting up the DIF cage. While I don’t plan to film the whole cleaning process unless things go sideways, I did notice that Smith Master seems to have borrowed some ideas from MCD here. They’ve designed it so the long cardan doesn’t extend from the central DIF to the back, but this choice creates quite an angle that could lead to overheating issues. The steeper the angle of the cardan, the more the pin gets jostled up and down at the joint, which means extra friction and heat while it’s spinning. One potential culprit for the overheating on the first run might be that a pin got lost at the back, allowing for quicker rotation due to less resistance. I’m thinking of swapping out the pin, even if it looks fine, just to see if a new one makes a difference!. 

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If you’re interested in Smithmaster’s RC cars, please check out other articles as well!For those interested in owning one, a quick visit to the Smithmaster website through the link provided can get you started :  https://smithmaster.net/