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Revision as of 07:04, 9 May 2014 ddgonzal (Talk | contribs) (->56-Series Transmission) Next diff -> |
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| 4-speed: W56 'W' Warner (Borg Warner) baulk-ring type syncromesh | 4-speed: W56 'W' Warner (Borg Warner) baulk-ring type syncromesh | ||
| - | 5-speed: C56 'C' Type [http://www.uniquecarsandparts.com.au/auto_terms_porsche_synchromesh.htm Porsche split-ring] synchromesh | + | 5-speed: C56 'C' Type [http://www.uniquecarsandparts.com.au/auto_terms_porsche_synchromesh.htm Porsche split-ring] synchromesh. Same type as Roadster but different size. |
| [http://datsun1200.com/modules/myalbum/photo.php?lid=18112 Comparison] | [http://datsun1200.com/modules/myalbum/photo.php?lid=18112 Comparison] | ||
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| 32612-H7200 BLOCK-thrust | 32612-H7200 BLOCK-thrust | ||
| 32613-H7200 BLOCK-anchor | 32613-H7200 BLOCK-anchor | ||
| - | 32614-H7200 BAND-brake 22 (2) | + | 32614-H7200 BAND-brake 22 (2) $3 USD |
| 32616-H7200 CIRCLIP | 32616-H7200 CIRCLIP | ||
Revision as of 07:04, 9 May 2014
Synchronizers let you shift gears using the clutch.
Contents |
Overview
Synchro is two cones pressed together until the two shafts run the same speed:
Each gear has a syncho face (external cone) machined with it
The hub is spring loaded so when you move the shifter partway, it presses the baulk ring (internal cone part) against the gear.
When they have slow down to the same speed, the shifter will move all the way in. It happens very quickly, unless the synchros are worn and not working well.
Synchro is basically:
Coupling with hub Baulk rings and gear faces
Coupling with hub. Left: assembled. Right: not assembled
photo
Each synchro set services two gears (arrows). Center arrow points to the Coupling Sleeve
photo
The Coupling Sleeve is what the shifter moves.
The hub is keyed to the mainshaft, so the sleeve rotates constantly in the Shift ForK while the car is moving.
The spring lets the hub move side-to-side inside the Coupling Sleeve, but not move too far. On this one there is a total of about 1/4" (5mm) total movement possible.
56-Series Transmission
FS5C56A 5-speed has very different synchros from other A-series transmissions. It has "C" type synchros (the "C" in FS5C56A) which are very different
4-speed: W56 'W' Warner (Borg Warner) baulk-ring type syncromesh 5-speed: C56 'C' Type Porsche split-ring synchromesh. Same type as Roadster but different size.
See Transmission Gear Part Numbers
4-speed F4W56L, F4W56A 32604-H9000 RING-BAULK (4) > 32604-H1000 <> 32604-H1010 32609-18000 INSERT-SHIFTING (6) 32603-18000 SPRING-SYNCHRONIZER (4) 32601-18000 HUB-SYNCHRONIZER (2) 32606-18000 SLEEVE-COUPLING (2)
5-SPEED FS5C56A 32601-H7200 HUB-SYNCHRONIZER (2) 32606-H7200 SLEEVE-coupling (2) 32611-H7200 RING-synchro 32612-H7200 BLOCK-thrust 32613-H7200 BLOCK-anchor 32614-H7200 BAND-brake 22 (2) $3 USD 32616-H7200 CIRCLIP
Also see 56-Series_Transmission_Parts#Synchros.
32603-18000 SPRING-SYNCHRONIZER * B11/B12/B13/B14 4-speed, 5-speed, E16, SR20DE, GA16DE * B110/B210 4-speed * B210/B310 4-speed, 5-speed * N10/N12/N13 F4, F5 * T11
60-Series Transmission
32604-H9000 RING-BAULK * F4W56A 4-speed light duty (4) * F4W60L 4-speed heavy duty (4) * FS5W60L 5-speed early (5) 32604-H9700 RING-BAULK * FS5W60A 5-speed late (5)
FS5W60L 5-Speed (1979 B310) 32606-18000 SLEEVE-COUPLING 4th-5th, 2nd-3rd NOTE: 1st gear coupling sleeve is built into Reverse Gear 32604-H9000 RING-BAULK 5 32258-H9001 HUB-SYNCHRONIZER 1ST & REVERSE $133.92 USD 32602-32200 SPRING-SYNCHRONIZER 1ST 3 32608-H9000 INSERT-SHIFTING 3 32234-H9000 RETAINER-SHIFTING INSERT 32601-H9001 HUB-SYNCHRONIZER 2ND & 3RD 32603-18000 SPRING-SYNCHRONIZER 2 32609-18000 INSERT-SHIFTING 3 32601-H9000 HUB-SYNCHRONIZER 4TH & 5TH 32603-18000 SPRING-SYNCHRONIZER 2 32609-18000 INSERT-SHIFTING 3
FS5W60A 5-Speed (1980- B310) 32606-18000 SLEEVE-COUPLING 3 32604-H9700 RING-BAULK 5 32601-H7300 HUB-SYNCRO,1ST & 2ND 32609-H9700 INSERT-SHIFTING 3 32603-18000 SPRING-SYNCRO 2 32601-H7301 HUB-SYNCRO,3RD & 4TH 32609-M0102 INSERT-SHIFTING -0780 3 32609-H9700 INSERT-SHIFTING 0880- <0> 32609-M0102 3 32603-18000 SPRING-SYNCRO 2 32601-H9000 HUB-SYNCRO 5TH & REVERSE 32609-H9700 INSERT-SHIFTING 3 32603-18000 SPRING-SYNCRO 2
32602-32200 SPRING-SYNCHRONIZER * B310 1979 5-speed * 71B 5-speed, 4-speed * 63A 5-speed
32609-M0102 INSERT-SHIFTING * B310 1980 5-speed * N10 1979-1981 F4, F5
63-Series Transmission
A14-equipped B210 5-speed
32604-P0100 RING-BAULK (5) FS5W63A 5-speed 32606-N7100 SLEEVE-COUPLING <> 32606-73200 2 32605-N9000 HUB-SYNCHRONIZER,4TH & 5TH 32601-N9000 HUB-SYNCHRONIZER 2ND & 3RD 32609-73201 INSERT-SHIFTING 6 32603-73200 SPRING-SPREAD 4 32245-N9000 GEAR-REVERSE,MAIN (38T) 32258-N9001 HUB-SYNCHRONIZER,1ST & REVERSE 32608-N9000 INSERT-SHIFTING 3 32602-32200 SPRING-SYNCHRONIZER 3
32604-P0100 RING-BAULK * 63 5-speed * 71B 4-speed, 5-speed
32609-73201 INSERT-SHIFTING * 63 5-speed * Z31 VG30.MT.F5 3rd-4th
32603-73200 SPRING-SPREAD * 63 5-speed * B11/B12/B13/B14 * D21 4WD.KA24E.MT.FT * GC22.Z24I * N12/N13 * S12.VG30E.MT * T11 * Z31.VG30.MT.F5