ATB LSD

Ooooooooo Oink and Oooer 🤪
We have a very special build thats just finished !
This is a Prototype Center, I have aquired 2 x of these and have plans for both !
Plan A - this one - sold to a customer fidgeting to get his paws on it for his racer.
Plan B - the 2nd one is going to be built up and Beaten to death by a Mate in his racer, which will then be taken apart to see whats what and to decide if indeed this moves from prototype to a new product 😍
At the same time this video will explain
All about ATBs and LSds what the pros and Cons of each are and also the issue of getting ATBs and LSDs to keep the Bolts for the Crown wheel tight, they are reknowned for working their ways loose ...
And this is also going into one of out Top of the range "Colletted" "Domex Carrier Cap Upgraded" Ultra Pegged Casings
All in all one hell of a unit !
So, enjoy the Video

[@AngusAbbott-qf8xm]

Great work ,attention to detail makes all the difference

[@kevinmartin9432]

Awesome video and diff

[@mattluszczak8095]

mega squirt whats with these atbs? are they good for traction? or are they useless? im guessing anythings better than the stock rover

[@mjallenuk]

Is there any chance I could have ten minutes with this diff in a room with some mood lighting and a Barry White CD?

[@MegasquirtUK]

🤣 yes it is a bit like that !!!

[@craigelbagel9498]

To reduce the chance of crown wheel bolts backing out do you think there's merit in running longer crown wheel bolts with a spacer under the head? Could give some more strain/elongation in the bolt to maintain clamping

[@MegasquirtUK]

No. Any sort of "Spacer" adds potential for issues, sometimes where you have to use them you just have to, that includes most washers flat or spings old technology.
The standard CW Bolts tend to stretch, and then when loose shear off, or if overload shear anyway even when tight. As you go up in Bolt strength 8.8 > 10.9 > 12.9 etc strength increases but so does brittality (Look up Glass bolt paradox). FTC5150 are pretty good, flanged head so larger surface area, and a serated head to bite into the steel etc, but these can shear as brittle.
Nordlocks are a clever option, serations 2 x sides and a cam locking system, and as here NLX are alos domed giving a spring washer additive too. Length is not as crucial, if the bolt shears thats the point where the Center mets the CW, stretching is due to overload and weaker bolt, what we have here is the best of what we think we can do, ATBs also being machined out of way tougher / harder steel than other diffs due to the 12 x Cylinders the gears run it mean FTCs don't really bite into the metal of the ATB. Nordlocks do as the metal made is tougher so the serations are harder and bite better than FTCs.
Bolt technology has moved massively over the last few years and continues to do so
.............as have locking compounds which we also use special stuff.........