Machine Cut Diff Ring Gear

steve73 · #1 26-07-2011

Team Durango are pleased to announce the arrival of the Machine Cut Diff Ring Gear for the DEX410, DEX410R and DESC410R models.
As used by Joern Neumann to finish 2nd at the World Championships!
This gear is precision machine cut from high strength steel.
The gear adds strength and at the same time reduces the rotating mass of the transmission.

coleman758 · #2 26-07-2011

That looks sweet!

Just another great way to spend another £40!

Marc0 · #3 26-07-2011

The kit ones are molded, right ?

stegger · #4 26-07-2011

Quote:

Originally Posted by Marc0

The kit ones are molded, right ?

YES. Never had a problem with the originals.

mark christopher · #5 27-07-2011

Quote:

Originally Posted by stegger

YES. Never had a problem with the originals.

Actually no their cast

HarlowS · #6 27-07-2011

Are they ??? or maybe sintered ??

Quote:

Originally Posted by mark christopher

Actually no their cast

mark christopher · #7 27-07-2011

Quote:

Originally Posted by HarlowS

Are they ??? or maybe sintered ??

Duno

Sintering
Sintering is a method for making objects from powder, by heating the material in a sintering furnace[1] below its melting point (solid state sintering) until its particles adhere to each other. Sintering is traditionally used for manufacturing ceramic objects, and has also found uses in such fields as powder metallurgy.

Culetto · #8 29-07-2011

Never had a problem with them in the buggy but in the short course ive blown one or two up. Will def put these in anyway just for peace of mind.

Marc0 · #9 29-07-2011

Quote:

Originally Posted by stegger

YES. Never had a problem with the originals.

I have just lost 2 teeth on the rear, like there was a bubble inside. Now I am really interested in this new option...

stegger · #10 29-07-2011

Quote:

Originally Posted by Marc0

I have just lost 2 teeth on the rear, like there was a bubble inside. Now I am really interested in this new option...

Maybe i've been lucky then

or built it right

ryanlownie · #11 29-07-2011

I think this is more of a DESC problem... With people using 550 motors the gears are taking a lot more strain than normal.

Culetto · #12 30-07-2011

New toys!

So i couldnt wait for HRP and the US distributors to get the machined ring gears in so i ordered them from TD UK as soon as i saw the post on the TD blog tuesday. They came in yesterday morning and i got them put in before racing last night. For those with short attention span they are really nice and worth the money and you can stop here, lol.

First out of the bag, they are almost sharp on the edges (not really but you can feel the edge in the gear area. Not in a half-assed, maybe a little leftover flashing kind of way, but a high quality no tolerance machining kind of way. I didnt weight them but they do feel a bit heavier. Personally i like a little rotating mass in the driveline as i feel it smooths out the truck when coming off power and doesnt bark so suddenly. The weight difference is small and i doubt anyone would notice the difference once its actually put back together.

[/URL]
IMAG0203[/URL] by phukyr[/URL], on Flickr

Again, very high quality machining. The teeth look very well done and little to no swirlies from the tooling. Also note where the hardening was taken back off on the bearing seat. When assembled the bearing fit was perfect, no play at all but you didnt need a press to get it on there. It dropped right on.

[/URL]
IMAG0204[/URL] by phukyr[/URL], on Flickr

Again you can see the machined bearing seat. This was identical in size. I rebuilt the diffs in new cases and also tried the previous cases that had probably 50+ packs on them. No changes in shimming was required and the setting for the pinion was unchanged for both the new and used cases. The mesh was very nice and had a great machined feel to it. The friction between the ring and pinion was barely noticeably and the mesh was perfect, again with no changes in shimming from the stock rings.

[/URL]
IMAG0205[/URL] by phukyr[/URL], on Flickr

Overall this is a GREAT upgrade to the DESC and im sure will be just as nice in the buggy once i get it torn down and changed over. There are some people who havent had any issues with the stock ring gear (i had only one or two issues myself) and there are those who have had many. While these should fix any durability issues in this area they are a great upgrade for those with no issues also. I felt a VERY noticable increase in smoothness in the whole drivetrain. Its now even more quiet (already a very quiet truck) and has a very presicion feel to the drivetrain now. You WILL notice a difference.

I will suggest that if you are in the US just wait for your favorite online retailer or LHS to get them. Shipping from TD UK is brutal and due to the time differences overnight shipping that was ordered tuesday at 11am ended up arriving friday at 10am for the same cost, lol. And if you are in the UK reading this SCREW YOU for getting parts before we do, hahaha.

Enjoy!

MHeadling · #13 02-08-2011

Can you notice a difference when you have fitted these??

Or is it a case of them lasting longer than the cast ones??

Culetto · #14 02-08-2011

I noticed a difference on the bench before i got it on the track. The drivetrain feels very mechanical now. The cast ones felt smooth enough but these are smooth and make the drivetrain have a more precision feel. I dont really know how to describe it. On the track the whole truck felt smoother and more aggressive, almost like the difference you feel if you have a tire out of balance and then fix it. You can also set your mesh much tighter without getting a 'high spot' like on the cast ones. It may just be all mental but im definately sticking with them.