4 Star Dif

[Donald Wilkinson]

Hey Gene: Whoa! I stand corrected! Looked in my TD,TF, parts books (Salisbury tube type axles): two stars. MGA (banjo axle)-two stars. MGB-early banjo- two stars. MGB-late (tube style as TD/TF) two stars. Went out to the garage and peeped at a couple MGA banjo punkins layin' out there: two stars. Looks like our TC was the last banjo punkin to have four stars. Can't find anything in the literature that shows they ever had only two. Don TC 7993

>From: Gene Gillam anngene@bellsouth.net> >To: "Donald Wilkinson" >digitaldon@hotmail.com>,fold@bcpl.net,mg-tabc@yahoogroups.com >Subject: Re: Re: [mg-tabc] 4 Star Dif >Date: Thu, 21 Mar 2002 14:01:34 -0500 > >Don sez: > >TD & TF, no, at least the ones my mother & my wife owned. The Blower >manual, to which I was referred yesterday, sez "4-star" fer all of these. > >Hmmm, that's strange. The Moss Parts Catalog shows the TD/TF differential >as being the "two star" type. > >Gene >

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[Carlyle Merritt]

The 4-star dif came in for the PA.

Before that time the 2-star dif was used

I never looked at the one in the TD and I rebuilt mine

a year ago.

Carlyle

[Tombutlercpa@cs.com]

Has anyone else ever heard of the gears located inside the pumpkin that connect to the half shafts as "spider gears"? There are four of these inside my TC'S pumpkin.

[Donald Wilkinson]

Tom: Yer a little confused there,Tom; (pretty easy, I guess, evidently I was too). There are two gears into which the 1/2 shafts slide,which the TC parts list calls "differential wheel"-part# MG470/102. The four "spider gears" to which you refer are called "differential pinion"- part# P105/121. These ride on the cross-shaped shaft called by the parts list "differential spider"- part# MG494/109; hence these four gears are often called "spider gears since they ride on the "spider". They are not connected to the half-shafts, they transmit torque to the half-shafts by being meshed with the "differential wheels", (often called pinions), which are "connected" to the half-shafts. Confusing, eh? (as Canucks say). Don TC 7993

>From: Tombutlercpa@cs.com >To: fold@bcpl.net, mg-tabc@yahoogroups.com >Subject: Re: [mg-tabc] 4 Star Dif >Date: Thu, 21 Mar 2002 18:40:07 EST > >Has anyone else ever heard of the gears located inside the pumpkin that >connect to the half shafts as "spider gears"? There are four of these >inside >my TC'S pumpkin.

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[Chip Old]

On Thu, 21 Mar 2002, Tombutlercpa@cs.com wrote:

> Has anyone else ever heard of the gears located inside the pumpkin that > connect to the half shafts as "spider gears"? There are four of these > inside my TC'S pumpkin.

A pumpkin with spiders in it doesn't sound very appetizing, but a differential casing with spider gears in it makes perfect sense. Yes, "spider gears" is another common name for what we have been describing as "star gears". -- Chip Old 1948 M.G. TC TC6710 XPAG7430 NEMGTR #2271 Cub Hill, Maryland 1962 Triumph TR4 CT3154LO CT3479E fold@bcpl.net