Ran mine for a full session today at Formby and I was very pleased with the results. (3k oil on medium grip carpet was just about right). Mine started stiff (oooerrr missus!!!) but now it's as mooth as silk.

This is the best my car has felt and I for one won't be going back to a balled diff.

I ran the gear diff at Silverstone this weekend. Ended up on 7k but I think i've built something wrong as the car had no rear end at all. Was awefull to drive.

So now a few people have done some running with the gear diff are they loosening up a bit now??

Any oil set ups for carpet for the diff??

Tresrey O-rings. Used the same for my DESC410 build.
http://www.tresrey-usa.com/products/...7D8pcs%29.html

looking at what most others are running, i can only think that you have gone too thick on the oil - most others are running around the 3k mark.

ran mine at leominster on carpet friday night with 3k in the diff.

instantly the car had a loose back end, but was running worn tyres. so I glued on some new pins and tried again. a lot better and balanced now.

Car seems to push like crazy exiting corners so I'll be working on curing that next meeting. Might drop the oil to 1k for next time.

The launch at the start of the final was ballistic :D

Possibly yes. I'm going to go back to the ball diff and set the car with that, then look at moving to the gear diff. Its different teritory to me so I am best to look at basics first.

Don't think its a bad product though, just not for me at this time.

So are the tight spots going after a few packs??

Are you running with out any shims??

Tight spots almost gone after 30 min running. I'm using one bronze shim either side.

Durango e said not to use any of the gold shims with the gear diff

I found that there was a minute element of movement with no shims.

i tried the gear diff at taplow on sunday, a couple of runs and it smoothed out in the gearbox

it wasn't my cup of tea though i had nothing on the smooth wood corners compared to the ball diff. the back end would just step out on me unless i crawled round there.

i ran 3k do i go higher or lower this is verging undrivable :thumbdown:

I also ran my gear diff in at the Winter Open, after 2 or 3 runs the tight spot disappeared. I was generally happy with the feel of the car with the gear diff although i struggled with the car snaking badly under acceleration. I managed to fix this in the final. Taking inspiration from Mr Doughty's (I love him now :woot:) Worksop setup I went up by 5 weight oil (from 30 to 35) and then went down two spring rates (from Dark Green to Light Blue). The car didnt feel as loose and the power was much easier to put down, indeed I found approx 3/4 a second on my quickest lap. The other thing I tried was the slipper setting, I found that I needed to run the car with the slipper approx a turn to 1.5 turn looser than on the ball diff ( this is with 5k diff oil). I think with better tires this would have been an optimum setup

Much thanks to David Poulter for all his help with the car on Saturday, I like bugging him now, hes so poilte :thumbsup: and he's ace!!!! lol

smokedsalmonkid, sounds like you had the same experience that I had. From reading, everyone said go down the oils to me, which is the oposite to what I thought I should do.

*puuush*

It seems that the gear diff is available again, at least here in germany.
The durango site still not showing any stock but I should have mine on monday.

Going to report if it's the real 210 gear diff :P

Mine seems to be binding and not spinning freely in the house, in turn bumping up the motor temps which is not good.

Think it matters what way it sits in the housing?

Where did you order it from in Germany?

From Ruddog the official Durango Distributor.
Mine is still on the way but hopefully arrives tommorow.

thank you wazee !

I've searched it a long time after your first post and finaly found it on Ruddog website.

Gear Diff orderd on saturday evening, shipped yesterday :thumbsup:

My english is not very good but my german skill is close to zero. By chance the site has an english version :lol:

No problem, I'm happy to hear that you got one.
Mine arrived today and I will build it this evening.

Unfortuntaly the ruddog website is not available in english but if anyone wants to order something you could use the google translator or just write
him an email to; [email protected] - I'm pretty sure he answers in english ;)

At the moment there are about 50 gear diffs left, so plenty for those who haven't had the chance to get their hands on one.

yes, there is an english version of the site

only the order status modification emails are only in German, but google translation is one of my best friends :D

So any news on the mouldings being too big?

I still have to use the arrma idle gear otherwise its too tight, this works but I still want to use the TD parts. Mine is too noisy with the extra metal idle gear.

I like the silent assassin approach, not the screaming banshee

I even seem to have one spot that is tighter than the rest.

I still have a tight spot on mine that has not really improved after 2 full meetings of running...

However, it has not caused any apparent issues with the mesh, sounds nice and quiet and is still fast with no overheating. I just made sure the gears were lubricated with black grease and this seems OK. Just need to make sure ZERO grit gets in between the teeth though, as that would be a recipe for disaster!

I've also had to replace the kit x-rings with the shock o-rings as I had a leak at one side...yet to be run but hopefully it will keep the oil inside the diff better! So far only ran with 3K oil and it seems OK, although would like to try going up and down to see how it feels - when I ran on dry Astro the other week, the car didn't seem to want to rotate as much as I would have liked on power...maybe going lighter would help?

Yes, I can confirm that some gears are to big. I got a new diff gear send to me today.
The new one fits like a glove, and the gear box spins silk smooth :thumbsup:

got mine today as well

Drove the car last day with the new diff gear. Such a difference! The gearbox is so smooth, and almost soundless.
I'm happy Durango sorted it out, and thought of us customers :)
I was surprised when I suddenly got a mail that they wanted to send me a new diff gear. 10 points to Durango :thumbsup:

Yes, I just bought a new gear diff and it's perfect. I believe the new batch all came with the correct size gears. Great reaction from TD!:thumbsup:

issue on mine wasnt really worth worrying about it was so minor, but i got sent a new diff case anyway so all good

where did you buy ?

My thoughts too as I'm wanting to buy one!

Quick question: What is the right size for the screw driver for the 8 screws at the Diff?

Got a new main gear too, fits perfectly and spins freely!

Steve I they are 0.050". Like this hex driver:
http://www.jespares.com/electric-mod...ategory_id=536

Thanks, 0,05 is what i tried, but now 4 screws are damaged.....trying to get a new driver tomorrow :thumbdown:

hi guys just wondering where is everyone buying these from as they cant be found at any of my shops i buy from :confused:

Je spares has them

I have a gear diff from the second batch. filled with durango 1000cst.
It does feel smooth but at the same time it feels a bit to tight/heavy.

when turning by hand you can feel the teeth of the spider gears getting contact, Is that because it is brand new?

Is it because I use the 2 copper shims from the ball diff on each side? or do I need lighter diff oil ?

I only ran 1 raceday ( 6 heats of 6 minutes ). Do I need to give it some time? maybe after a few packs ?

any thoughts ?

edit:
Or is it maybe , that I used O-rings from Tresrey # TYS246 red o-rings
when installing those O-rings they were slightly to big, but I got them to fit and put the e-clip in the groove with a little force. Could they couse such a drag ?

Normally you do not use any copper shims of the ball diff on the gear diff; take them out, put the gear diff back in the gear box and pinch the gearbox together. There should be a slight lateral movement of the diff.
But I agree that the gear diff feels a bit notchy but it will go away once run in.

I had a 410 diff that was notchy as hell even after 30mins rum was still not smooth.

I filled it with cutting oil, spun it up with an electric drill for a few seconds ( put an old drive shaft in the chuck held the main gear) tipped out the grey slurry, smoooooooth as silk. (you will prob need new seals as the Cutting oil makes them swell)

your prob not knocking the large gear onto the outdrive enough

That would make it tight, bit not give it a tight spot or knock at one point in the revolution.

If all the diff parts were like the newer machined main diff ring, I'm sure that would build one sweeeet diff.............