I haven't heard a single opinion on them yet, although they were introduced in 2011 (my 8043 excavator bought last year also had them).

Thoughts? Do they perform better/worse than the old part in MOCs?

The old 16t gear has lasted an amazing 30 years. Not that many parts last that long without modifications.

Appendix B to Sariel's Gears Tutorial has a good analysis:

"As of early 2011, the classic 16 teeth gear has been modified. The version we have known before is apparently being gradually replaced with a new version coming from a slightly different mould:

"The picture above shows the old version on the left (part number 4019) and the new version on the right (part number 94925). As you can see, the shape of the gear’s outer rim is exactly the same, whereas the structure in the middle of it has been significantly altered. It appears that the new version is supposed to be stronger and less prone to mechanical damage from high torque, as its centre is clearly more massive. Additionally, the outer ring around the gear appears roughly twice as thick, which is most likely another factor that makes the new version of the gear more torque-resistant."

I have never broken a 16 tooth gear before so I cant say that the newer version is entirely necessary for me. I dont have enough of them anyway to use uniformly throughout my MOCs so I stick to the old fashioned gears .

I have been using the new ones for everything I have been building lately. I think they look stronger but also prefer them aesthetically and they're newer so they must be better.

I just finished a modernized re-make of the 8421 Mobile Crane and used these gears along with the other new ones, along with the newer axle connectors. I also used the newer PF parts vs. the old RC motor and battery box.

  On 7/15/2012 at 4:21 PM, Technic Gearhead said:

I just finished a modernized re-make of the 8421 Mobile Crane and used these gears along with the other new ones, along with the newer axle connectors. I also used the newer PF parts vs. the old RC motor and battery box.

Pics please?

  On 7/15/2012 at 4:51 PM, SheepEater said:

Pics please?

I plan to document it pretty soon and make a thread describing everything I tweaked. I'm pleased with how it turned out but it needs a little more work here and there to be polished. The crane is kind of slow with the small PF motor, so it could use some revisions to the external gearing.

the holes on the original style allow for the construction of a tiny cage gear

which is no longer possible with the new design.

okay, i admit i haven't yet found a use for a cage gear. still, the possibility's there.

KEvron

Edited July 15, 201212 yr by KEvron

The only real practical difference i've noticed so far is that they are not as tight fitting on an axle as the older ones. They look stronger but never broke an older one. They do appear to be "rounder" that the older ones. By that I mean that when an older gear turned on an axle they weren't always exactly circular, these newer ones however are.

  On 7/16/2012 at 3:58 PM, allanp said:

They do appear to be "rounder" that the older ones. By that I mean that when an older gear turned on an axle they weren't always exactly circular, these newer ones however are.

Interesting you saying that; I happen to own a few of the very first batch of 16t gears, from the set 8857 - motorcycle with sidecar, from 1980, and had to take them aside and replace them because they were warped/un-circular and would generate lots of friction as a result. You wouldn't know it just by looking at them, though.

Edited July 16, 201212 yr by SheepEater

The old 16t gear doesn't rub the beams if it slides away in a situation like this:

The new one does. That's a small advantage of the old version. However I never needed such a situation.

But I think the new ones simply look better (and are easier to slide over axles). I have not found a diffeence in the amount of friction they have.

  Quote

The old 16t gear has lasted an amazing 30 years. Not that many parts last that long without modifications.

There have been (small, non-functional) modifications. The newest old-style ones have a small ridge on the ends of the center part.

As far as I know, the 40t gear has remained truely unchanged since inception.

Sorry, I had to.

  On 7/15/2012 at 4:21 PM, Technic Gearhead said:

I have been using the new ones for everything I have been building lately. I think they look stronger but also prefer them aesthetically and they're newer so they must be better.

I just finished a modernized re-make of the 8421 Mobile Crane and used these gears along with the other new ones, along with the newer axle connectors. I also used the newer PF parts vs. the old RC motor and battery box.

You beat me to it, LOL. I have a sceem, gonna build the XL version, but i want to go with a linier set up for lifting. Do the same thing you did, go with PF motors and loose the R/C motor. Gonna make the boom longer, and build a dolly for it to sit on behind the crane while being transported. We have a company here in town that has a big one, and thats how they get it around for the most part. I,ve seen bigger ones set up, the bring the boom in on a trailer then put it on at the job site using another crane. Would like to go with 3 drives and 4 steers too, just to be different, LOL.

Dan

  On 7/18/2012 at 10:19 PM, skylinedan said:

You beat me to it, LOL. I have a sceem, gonna build the XL version, but i want to go with a linier set up for lifting. Do the same thing you did, go with PF motors and loose the R/C motor. Gonna make the boom longer, and build a dolly for it to sit on behind the crane while being transported. We have a company here in town that has a big one, and thats how they get it around for the most part. I,ve seen bigger ones set up, the bring the boom in on a trailer then put it on at the job site using another crane. Would like to go with 3 drives and 4 steers too, just to be different, LOL.

Dan

Hear you there buddy...those 2 pneumatic cylinders slowly lost air pressure even if fitted tightly(the pneumatic tubing on both the cylinders, pump and valve). I'd come out in the morning and the crane arm was down, much like the 8455 Backhoe Loader, it never stayed upright...in both situations, pneumatics are fine for most everything else, but LA's would be better for especially the 8421, especially if displayed. I even got to the point frustrated with it constantly coming down that I cut a piece of solid tubing used in the 8273's cab and used it as a 'prop'. Took a bit of finagling but it worked eventually...

  On 7/18/2012 at 10:19 PM, skylinedan said:

You beat me to it, LOL. I have a sceem, gonna build the XL version, but i want to go with a linier set up for lifting. Do the same thing you did, go with PF motors and loose the R/C motor. Gonna make the boom longer, and build a dolly for it to sit on behind the crane while being transported. We have a company here in town that has a big one, and thats how they get it around for the most part. I,ve seen bigger ones set up, the bring the boom in on a trailer then put it on at the job site using another crane. Would like to go with 3 drives and 4 steers too, just to be different, LOL.

Dan

That sounds pretty interesting! I have been looking at the XL version also but wanted to get the base one done first and go from there. I'll post up some pictures tonight and make a thread as soon as the folder is public. You can take a look at how I've implemented the PF parts and see if you like it or not. I remember seeing you mention the crane in another thread and meant to comment on it.

I think the new ones are stronger because there is less cut out and it is not from the center hole however they don't grip the axle as much.

Edited July 19, 201212 yr by SNIPE

I like the new 16t gears. I broke some of the old style ones on my backhoe during a show, and Crowkillers gave me some of the new ones. The new ones are definitely stronger, and I have yet to break one.

Some of my old 16z gears broke in a big and heavy RC car I was building some time ago, but there were some extreme forces involved in that model. I didn't break a new one yet, bot then I didn't test them thouroghly yet.