[Spridgets] Apolgies - differential - highway speeds etc

Linda Grunthaner grunthaner at gmail.com
Sun May 31 06:15:42 MDT 2015


Awesome explanation and are we all getting images one on the list?
Thanks so much Daniel,
Lin

62 Sprite "Pinky"

On Fri, May 15, 2015 at 4:06 PM, WeslakeMonza1330--- via Spridgets <
spridgets at autox.team.net> wrote:

>  Hi List,
>
> I've felt fairly bad for a couple of days about one of my replies to the
> highway speeds/diff/pumpkin thread but it's taken until now for me to find
> the time to try and put things right.  To serve my 'penance' I've finally
> gotten round to doing what I should have done in the first place which is
> dig a complete final drive assembly from under the bench in my garage, pull
> it apart, and photograph it.
>
> As you can see in both photos, there are 2 components.  The
> differential/diff is dark metal and has a bearing on at each end.  This
> differential also has a Phantom Grip device fitted to it (another
> story/thread).  More importantly this diff also has the crownwheel or ring
> gear bolted to it.  However, it needs the pinion to go with it to make a
> final drive unit and the two items are matched components.
>
> It is possible to buy just the final drive gears - the ring and pinion by
> themselves without the diff - you can find them on ebay.  But, it's rare to
> see a diff with the ring bolted to it and the pinion with it as another
> part.
>
> In the photo you can also see the differential carrier itself which for
> the Sprite/Midget is light in colour because it's cast from aluminium
> alloy.  You can also see looking inside the diff carrier the pinion gear.
>
> So, the easiest way to swap the final drive ratio (4.22 to 3/9) is to buy
> a complete final drive assembly which is: the diff, the ring and pinion and
> the diff carrier.  If you just buy the diff which goes into the pumpkin and
> even it has the ring gear bolted to it, it won't work in your pumpkin
> (final drive assembly) because the pinion will have the wrong tooth count
> for the new ring gear being a different ratio (eg: 9 teeth instead of 10
> teeth)
>
> Sorry, apologies to the list if my earlier reply was rude and discourteous.
>
> Regards
>
> Daniel
>
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-- 
"Pay if forward" in honor of Frank Clarici III, Spritenut
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