Take a look at the book “We were the Ramchargers”. It goes into a lot of
the development in the transmission and suspension department. And yes, they did
use that pin syncro trans in the early cars. They also mentioned how hard it was
to keep one in one piece. A few races were lost because it would not do the 1 2
shift.
Don
Sent: Monday, January 19, 2015 1:04 PM
To: 'Mike' ; 'John Nowosacki'
Subject: RE: [Chrysler300] 300-G at B-J.
Interesting re
:my prior write up about manual trans of this period; Jim Bartuska kindly
sent me a factory item (thank you ,Jim) about the development of this trans and
the related smaller one in 318 Darts and Valiants..both new for 60, HD version
in 300 in 61 . Dart/Valiant had 3” gear centers, HD one 3.25. About
same design, one is bigger. Related to my
very clear experience of popping those like jelly beans, ( went through about 20
of them behind 392). The HD one , which I think I never encountered,
unbelievably had kept the old mopar pin syncros in a new design . One fast
shift, the way fast cars are really shifted, by real car guys, would for sure
break off those pins and blow up the trans. The pins fall into the gear mesh A
design for grandmothers to shift, 200k or not . So to look at ,
in a G , only. Now I can
understand why max wedge, maybe even in 61? came with T-85, the competitor
trans , mostly used in HD fords/trucks . One try of this pin blocker and forget
it with Max wedge. T-85 has conventional , and large, cone syncros . The
factory bulletin Jim sent describes the pin syncro as “blocking the shift
absolutely unless gears are at same speed, with light pressure, but with heavy
pressure the pins have a taper half way allowing you to over ride the syncro
action for fast shift” …. If gears are
close to meshable (right, got a bridge to sell?) . What really
happens is pins momentarily transmit the torque to force the gears to ramp up
faster, before the override described. The pins are physically about ¼” OD, 3 of
them about 2” long , down to about 3/16 , diameter on open (business) end
in a receiving collar ring, (After down taper from the ¼” ), and fit into
3 ~1/4 holes, allowing a shift when pin fits into hole (aligned) .
The closed end of the pin holding ring attaches to , or is, a driven ring ,
maybe pins are pressed into it . Given the description, one can see how the pins
are carrying the tremendous twisting torque an inch out from their mounting,
while sitting at the taper trying to mesh, and so will snap off under
stress. What happened, for sure, is what is described----now I know why.
Thank you Jim.. You would not
get one run out of this truly lousy design behind a max wedge. 1-2 shift and
boom. So now we know more about “HD MOPAR” vs T 85m thing in 61-62. And
rumors at the time. BW cone syncros wear out but cannot break off , I had a best
friend with 270 HP vette (dual quad 283, 60, 3:70’s ) ; Before that he had a
full house 56 Desoto Adventurer, I think it was a stick too. . he would shift
Vette at WOT at 7500 without touching clutch,-- all the time, just grab and yank
it, he even broke the handle off once. That would blow off all his fan belts ;
but he often won against 61 -62 315 4:11 fuelie vettes. . T-10 4 speed, aluminum
case, never blew up. Comparison to my , and his, mopar manual transmission woes
inevitable ; Chrysler said T10 not strong enough, in 60, they were right.
Packard looked to me to be a T85 on steroids. For later tech guys, or Ford, it
was a Top Loader ,---right from 1935 or so. Packard guys were GOOD.
From: Chrysler300@xxxxxxxxxxxxxxx
[mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of Mike mwl1967@xxxxxxx
[Chrysler300] Scottsdale BJ no reserve unless they agree your car is worth
$500k. At their Vegas auction it's $150k. Russo Steele allows reserves but makes
suggestions. They sent a rep out to look at three of my cars, spent four hours
and days later got back to me with a suggested reserve. Their response was that
"they're there to sell cars not host a car show". I get that but in a
questionable market if I needed to sell the choice between a low reserve at
Russo and no reserve at Barrett I'd go with Barrett.
__._,_.___ Posted by: "Don Verity" <d.verity@xxxxxxx> To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to https://groups.yahoo.com/neo/groups/all/manage/edit For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang __,_._,___ |