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  #1  
Old 26-06-2007
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Default Upgraded diff bolts

http://www.redrc.net/2007/06/hb-gumb...-diff-upgrade/

spring prob now goes nut side
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Old 26-06-2007
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big nuts!
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  #3  
Old 27-06-2007
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Very good! They should have come up with this sooner though! I've already replaced 2 diffs!
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  #4  
Old 27-06-2007
ben27111973 ben27111973 is offline
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damn that is one long nut.

cant see how its going to fit inside the outdrive unless there is a whole lot of spare room in there. its a lot longer than the current nut.

perhaps thats the issue though. on the screws I have been snapping they all have a mark on the thread indicating the snap line and its just at the point of entry to the nut.

This nut would cover that point entirely the there would be a lot more of the screw inside the nut in this arrangement.
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Old 27-06-2007
grindog grindog is offline
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http://hb-buggy.img.jugem.jp/20070627_113216.jpg
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  #6  
Old 27-06-2007
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The two that I've done have both snapped right in the centre of the diff, hopefully though the extra thickness of the screw should cure this.
These should be supplied free of charge to all D4 owners, if there wasn't a problem you wouldn't need this upgrade and if there is a problem why do we have to pay for their mistakes?
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  #7  
Old 28-06-2007
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Just thought I'd post this for you guys from the aussie thread in RCTECH... Thanks Michael and Ben. Thank god they have reviewed the whole diff issue...

New part numbers are as follows:

61544 Diff Maintenance kit (This includes all items below)
61538 Diff Bolt
61149 Diff Balls
61148 Thrust Washers
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  #8  
Old 28-06-2007
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Bad news is Mirage do not have these in stock and have no due date for them!
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  #9  
Old 28-06-2007
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Yeah they arent quite available yet, they will be very soon though.. Your importer may be able to get some fast tracked for the drivers though if you ask nicely, Thanks BEN haha
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Old 25-07-2007
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Still no sign of these upgraded bolts, how long does it take to make a few thousand of these?
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  #11  
Old 29-07-2007
mharlow mharlow is offline
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Quote:
Originally Posted by gramey View Post
Still no sign of these upgraded bolts, how long does it take to make a few thousand of these?
Used the upgraded Diff bolts on the weekend. No issues with these breaking at 2.6mm. Only problem now is on the dusty tracks here in Australia the thrust bearing seem to be more exposed and the diff only lasts a few runs before needing a rebuild.
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  #12  
Old 29-07-2007
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Quote:
Originally Posted by mharlow View Post
Used the upgraded Diff bolts on the weekend. No issues with these breaking at 2.6mm. Only problem now is on the dusty tracks here in Australia the thrust bearing seem to be more exposed and the diff only lasts a few runs before needing a rebuild.
Marvellous, replace one problem with another, still at least you've got the bolts down there in Oz so at least your diff should hold together even if it's a bit rough.
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Old 03-08-2007
grindog grindog is offline
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When the diff bolt snaps, is it generally the front or rear that is prone to going? Does it seem to make a difference how tight etc?

My rear one has just snapped on a routine clean of the car and just spinning the rear wheel by hand to test the freeness of the car?

John
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  #14  
Old 03-08-2007
GRIFF55 GRIFF55 is offline
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you got pm grindog!
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  #15  
Old 03-08-2007
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Both times mine have snapped it's been the rear ones, still waiting on Mirage to come up with a supply of the upgraded version.
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  #16  
Old 05-08-2007
Little Mac Little Mac is offline
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Mirage now have the Diff Maintenance Kit in stock.

Cam
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  #17  
Old 20-08-2007
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O.k., I have to take back the above, I asked my LHS to enquire about the upgraded diff bolt when they were first mentioned, suggesting that in view of the number of failures they should be supplied FOC. When they finally became available my LHS contacted me and quoted the above price so in disgust I eventually phoned Mirage today.
The price is only if purchasing as a spare part, original owners are being supplied with replacement bolts free of charge, so hats off to Hot Bodies, bit slow in getting them out but alls well that ends well.
Now all I've got to do is find a buyer for the 2 D4's I have for sale, complete with diff bolt upgrade!
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  #18  
Old 21-08-2007
dan_kitty dan_kitty is offline
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cool, that sounds good then. So even though i aint had anything wrong with my original diff bolts can i still get my stronger ones free? how do i go about this?
Am I not pushing hard enough, why havent mine snapped yet?

happy days
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  #19  
Old 21-08-2007
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Quote:
Originally Posted by dan_kitty View Post
cool, that sounds good then. So even though i aint had anything wrong with my original diff bolts can i still get my stronger ones free? how do i go about this?
Am I not pushing hard enough, why havent mine snapped yet?

happy days
email mirage, with details of where car was bought from
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  #20  
Old 21-08-2007
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To put things straight for once and for all.

If you have problems with your diff bolts, please contact Mirage with your details.

The following will help:
Model Shop Purchased From:
Kit Identification Number: (This is printed on the back of the box on a white label in the EU only) Stops nasty grey imports.
Proof of purchase: (If Possible)

You will get 2 diff screws / kit and no more. The replacements will be logged against your kit.

If you bought your D4 from abroad, please contact the hobby shop you got your nasty grey import from!!!!!!
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