4 Star Dif

[Mark Andrew]

To add to the vernacular...in some parts it's punkin Mark Andrew 5146 Chip Old wrote:

On Wed, 20 Mar 2002, i.thomson@talk21.com wrote: Perhaps the confusion is over the word "differential"? I believe the ex-colonials rather quaintly refer to it as some sort of fruit (or is a pumpkin a vegetable?).

No, we "colonials" call it the differential. Some use the slang term "pumpkin" because of the shape of the case. -- Chip Old 1948 M.G. TC TC6710 XPAG7430 NEMGTR #2271 Cub Hill, Maryland 1962 Triumph TR4 CT3154LO CT3479E fold@bcpl.net Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

[Donald Wilkinson]

OK, just never heard diff pinions referred to as "stars". Therefore, any TC diff would be a "4-star", right? I think I saw somebody refer(in this discussion) to a "2-star" diff. That's wierd. How could there be only two "stars" in any diff? Don TC 7993

>From: "Jeff & Merryl Redman" redcigar@ozemail.com.au> >To: "Donald Wilkinson" digitaldon@hotmail.com> >Subject: Re: [mg-tabc] 4 Star Dif >Date: Wed, 20 Mar 2002 22:18:39 +1100 > >G'day Don, > >There's an excellent series of photos of the 'stars' in several different >differentials in the black 'Blower' M.G. Workshop Manual. >Fig. 2 page 193 (VA) >Fig. 5 page 195 (TA,B,C) >Fig 7 page 197 (Sectional view) >Fig.12 page 202.(General) > >The 'Stars' are more correctly called diff gears and diff pinions (not to >be >confused with crown-wheel & pinions) which fit onto the spider inside the >diff case >It's these little bludgers that make the diff work, allowing one wheel to >revolve faster than the other side, as when turning the car in a tight >circle. > >A fascinating thing is the diff! > >Regards >Jeff TA2828 TC 3306 > >----- Original Message ----- >From: "Donald Wilkinson" digitaldon@hotmail.com> >To: carlyle@merritt-computer.com> >Cc: mg-tabc@yahoogroups.com> >Sent: Wednesday, March 20, 2002 6:01 PM >Subject: Re: [mg-tabc] 4 Star Dif > > > > What's a TC "4 star differential"? > > > > Don > > TC 7993 > > > > > > >From: "Carlyle Merritt" carlyle@merritt-computer.com> > > >To: "mg-tabc" mg-tabc@yahoogroups.com> > > >Subject: [mg-tabc] 4 Star Dif > > >Date: Tue, 19 Mar 2002 13:22:50 -0600 > > > > > >Looking for a complete 4 Star differential for TC. > > >Anyone out there have one laying around that would like to sell. > > > > > >Carlyle Merritt > > > > > > > > > > _________________________________________________________________ > > Join the world s largest e-mail service with MSN Hotmail. > > http://www.hotmail.com > > > > > > > > > > Your use of Yahoo! Groups is subject to >http://docs.yahoo.com/info/terms/ > > > > > >

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[Donald Wilkinson]

Does the K&N filter fir in yer "cannister"? Don TC 7993- ex-colonial & rebel w/o cause.

>From: "BADGER" mrbadger@cox.net> >To: "MG-TABC" mg-tabc@yahoogroups.com> >Subject: Re: [mg-tabc] 4 Star Dif >Date: Wed, 20 Mar 2002 08:09:18 -0500 > >My Alfa has a five star colonial pumpkin with a differential in all five >gears but I find that if I use a gas stabilizer on alternate Tuesdays, it >doesn't matter too much what brand of coffee I put in the canister. >Badger > > > > >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > >

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[Donald Wilkinson]

Hey Badge: Forgive the typo; that's "fit". O well.............. Don TC 7993

>From: "Donald Wilkinson" digitaldon@hotmail.com> >To: mrbadger@cox.net, mg-tabc@yahoogroups.com >Subject: Re: [mg-tabc] 4 Star Dif >Date: Thu, 21 Mar 2002 04:19:08 +0000 > >Does the K&N filter fir in yer "cannister"? > >Don >TC 7993- ex-colonial & rebel w/o cause. > > > >From: "BADGER" mrbadger@cox.net> > >To: "MG-TABC" mg-tabc@yahoogroups.com> > >Subject: Re: [mg-tabc] 4 Star Dif > >Date: Wed, 20 Mar 2002 08:09:18 -0500 > > > >My Alfa has a five star colonial pumpkin with a differential in all five > >gears but I find that if I use a gas stabilizer on alternate Tuesdays, it > >doesn't matter too much what brand of coffee I put in the canister. > >Badger > > > > > > > > > >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > > > > > > >_________________________________________________________________ >Send and receive Hotmail on your mobile device: http://mobile.msn.com > > > > >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > >

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[yd3@nvc.net]

Badger: LOL The "brand of coffee" you "put in the canister" might not make a difference, but how much caffine it has such must have! Blake BADGER wrote:

> > My Alfa has a five star colonial pumpkin with a differential in all five > gears but I find that if I use a gas stabilizer on alternate Tuesdays, it > doesn't matter too much what brand of coffee I put in the canister.

[i.thomson@talk21.com]

I believe that the first reference to diff. gears which I ever heard described them as "star and planet gears" due, I suppose, to their revolving like heavenly bodies. BTW, don't overdrives work on the same principle? With only two planet wheels the stress on them is double that on four as they found in the thirties when they were prone to breaking; also four gives more stability (stiffness) to the diff. itself. Ian Thomson. -------------------------

> OK, just never heard diff pinions referred to as "stars". Therefore, any TC >diff would be a "4-star", right? I think I saw somebody refer(in this >discussion) to a "2-star" diff. That's wierd. How could there be only two

"stars" in any diff?

> >Don >TC 7993 > > >From: "Jeff & Merryl Redman" redcigar@ozemail.com.au> >To: "Donald Wilkinson" digitaldon@hotmail.com> >Subject: Re: [mg-tabc] 4 Star Dif >Date: Wed, 20 Mar 2002 22:18:39 +1100 > >G'day Don, > >There's an excellent series of photos of the 'stars' in several different >differentials in the black 'Blower' M.G. Workshop Manual. >Fig. 2 page 193 (VA) >Fig. 5 page 195 (TA,B,C) >Fig 7 page 197 (Sectional view) >Fig.12 page 202.(General) > >The 'Stars' are more correctly called diff gears and diff pinions (not to >be >confused with crown-wheel & pinions) which fit onto the spider inside the >diff case >It's these little bludgers that make the diff work, allowing one wheel to >revolve faster than the other side, as when turning the car in a tight >circle. > >A fascinating thing is the diff! > >Regards >Jeff TA2828 TC 3306 > >----- Original Message ----- >From: "Donald Wilkinson" digitaldon@hotmail.com> >To: carlyle@merritt-computer.com> >Cc: mg-tabc@yahoogroups.com> >Sent: Wednesday, March 20, 2002 6:01 PM >Subject: Re: [mg-tabc] 4 Star Dif > > > > What's a TC "4 star differential"? > > > > Don > > TC 7993 > > > > > > >From: "Carlyle Merritt" carlyle@merritt-computer.com> > > >To: "mg-tabc" mg-tabc@yahoogroups.com> > > >Subject: [mg-tabc] 4 Star Dif > > >Date: Tue, 19 Mar 2002 13:22:50 -0600 > > > > > >Looking for a complete 4 Star differential for TC. > > >Anyone out there have one laying around that would like to sell. > > > > > >Carlyle Merritt > > > > > > > > > > _________________________________________________________________ > > Join the world s largest e-mail service with MSN Hotmail. > > http://talk21.btopenworld.com/redirect. ... ail.com> > > > > > > > > > > Your use of Yahoo! Groups is subject to >http://talk21.btopenworld.com/redirect. ... /terms/> > > > > > > > > > > >_________________________________________________________________ >Get your FREE download of MSN Explorer at http://talk21.btopenworld.com/redirect. ... ntl.asp> > > > > >Your use of Yahoo! Groups is subject to http://talk21.btopenworld.com/redirect. ... /terms/>

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[Chip Old]

On Thu, 21 Mar 2002, Donald Wilkinson wrote to redcigar@ozemail.com.au:

> OK, just never heard diff pinions referred to as "stars". Therefore, any > TC diff would be a "4-star", right? I think I saw somebody refer(in this > discussion) to a "2-star" diff. That's wierd. How could there be only > two "stars" in any diff?

There are lots of cars with 2-star diffs. It has been a long time since I took one apart, but I seem to recall that the diff used in the TD/TF/YB rear axle is a 2-star design. -- Chip Old 1948 M.G. TC TC6710 XPAG7430 NEMGTR #2271 Cub Hill, Maryland 1962 Triumph TR4 CT3154LO CT3479E fold@bcpl.net

[Donald Wilkinson]

Hey Ian: Digitaldon detects yet another confusion in yer reference to "stars & planets" in conjunction to diff sets, where ratio changes occur in the ring & pinion, & not in the spiders ("stars"). Planetary gearsets, however, do provide ratio changes, as found in marine transmissions, Ford "Model T's", many other applications. Don TC 7 993

>From: i.thomson@talk21.com >To: digitaldon@hotmail.com,redcigar@ozemail.com.au >CC: mg-tabc@yahoogroups.com >Subject: Re: [mg-tabc] 4 Star Dif >Date: Thu, 21 Mar 2002 08:49:12 GMT+00:00 > >I believe that the first reference to diff. gears which I ever heard >described them as "star and planet gears" due, I suppose, to their >revolving like heavenly bodies. BTW, don't overdrives work on the same >principle? With only two planet wheels the stress on them is double that >on four as they found in the thirties when they were prone to breaking; >also four gives more stability (stiffness) to the >diff. itself. > >Ian Thomson. > >------------------------- > > OK, just never heard diff pinions referred to as "stars". Therefore, any >TC > >diff would be a "4-star", right? I think I saw somebody refer(in this > >discussion) to a "2-star" diff. That's wierd. How could there be only two >"stars" in any diff? > > > >Don > >TC 7993 > > > > > >From: "Jeff & Merryl Redman" redcigar@ozemail.com.au> > >To: "Donald Wilkinson" digitaldon@hotmail.com> > >Subject: Re: [mg-tabc] 4 Star Dif > >Date: Wed, 20 Mar 2002 22:18:39 +1100 > > > >G'day Don, > > > >There's an excellent series of photos of the 'stars' in several different > >differentials in the black 'Blower' M.G. Workshop Manual. > >Fig. 2 page 193 (VA) > >Fig. 5 page 195 (TA,B,C) > >Fig 7 page 197 (Sectional view) > >Fig.12 page 202.(General) > > > >The 'Stars' are more correctly called diff gears and diff pinions (not to > >be > >confused with crown-wheel & pinions) which fit onto the spider inside >the > >diff case > >It's these little bludgers that make the diff work, allowing one wheel to > >revolve faster than the other side, as when turning the car in a tight > >circle. > > > >A fascinating thing is the diff! > > > >Regards > >Jeff TA2828 TC 3306 > > > >----- Original Message ----- > >From: "Donald Wilkinson" digitaldon@hotmail.com> > >To: carlyle@merritt-computer.com> > >Cc: mg-tabc@yahoogroups.com> > >Sent: Wednesday, March 20, 2002 6:01 PM > >Subject: Re: [mg-tabc] 4 Star Dif > > > > > > > What's a TC "4 star differential"? > > > > > > Don > > > TC 7993 > > > > > > > > > >From: "Carlyle Merritt" carlyle@merritt-computer.com> > > > >To: "mg-tabc" mg-tabc@yahoogroups.com> > > > >Subject: [mg-tabc] 4 Star Dif > > > >Date: Tue, 19 Mar 2002 13:22:50 -0600 > > > > > > > >Looking for a complete 4 Star differential for TC. > > > >Anyone out there have one laying around that would like to sell. > > > > > > > >Carlyle Merritt > > > > > > > > > > > > > > > _________________________________________________________________ > > > Join the world s largest e-mail service with MSN Hotmail. > > > Href='http://talk21.btopenworld.com/redirect. ... ail.com> > > > > > > > > > > > > > > > Your use of Yahoo! Groups is subject to > >Href='http://talk21.btopenworld.com/redirect. ... /terms/> > > > > > > > > > > > > > > > > > > > >_________________________________________________________________ > >Get your FREE download of MSN Explorer at Href='http://talk21.btopenworld.com/redirect. ... ntl.asp> > > > > > > > > > >Your use of Yahoo! Groups is subject to Href='http://talk21.btopenworld.com/redirect. ... /terms/> > > > >-------------------- >talk21 your FREE portable and private address on the net at >http://www.talk21.com > >

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[Donald Wilkinson]

Don sez: TD & TF, no, at least the ones my mother & my wife owned; dunno about YB. My brother had a YT, but we never opened that. The Blower manual, to which I was referred yesterday, sez "4-star" fer all of these. Don TC 7993

>From: Chip Old fold@bcpl.net> >To: MG-TABC mg-tabc@yahoogroups.com> >Subject: Re: [mg-tabc] 4 Star Dif >Date: Thu, 21 Mar 2002 08:06:40 -0500 (EST) > >On Thu, 21 Mar 2002, Donald Wilkinson wrote to redcigar@ozemail.com.au: > > > OK, just never heard diff pinions referred to as "stars". Therefore, any > > TC diff would be a "4-star", right? I think I saw somebody refer(in this > > discussion) to a "2-star" diff. That's wierd. How could there be only > > two "stars" in any diff? > >There are lots of cars with 2-star diffs. It has been a long time since I >took one apart, but I seem to recall that the diff used in the TD/TF/YB >rear axle is a 2-star design. > >-- >Chip Old 1948 M.G. TC TC6710 XPAG7430 NEMGTR #2271 >Cub Hill, Maryland 1962 Triumph TR4 CT3154LO CT3479E >fold@bcpl.net > > > > >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > >

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[Gene Gillam]

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