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Brass Synchro Cone Ring: Turned with a Taper Matched to Its Seat
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18. Ukwakira 2026NO
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Brass Synchro Cone Ring: Turned with a Taper Matched to Its Seat

In a synchromesh gearbox a cone-shaped brass ring on the gear is pressed against a cone on the sliding collar, and friction brings the two to the same speed before the teeth engage (Wikipedia, Manual transmission). Factory rings are forged or pressed from brass or steel; this one is turned from brass bar, with its cone and the seat it runs on cut at one lathe setting so the tapers match. Method and sizes are ours. The picture: our drawing.
Hagati
Half a day

Amabwiriza

1

Face, drill and turn

Chuck the brass bar, face it, centre-drill and drill through, then turn the outside to the ring's diameter.

Ibikoresho by'iyi ntambwe:

Umurongo w'Umuringa w'UmuhondoUmurongo w'Umuringa w'Umuhondo1 igice

Ibikoresho bikenewe:

Imashini yo guhinguza icyumaImashini yo guhinguza icyuma
Igikoresho gifata cy'ibirenge 3 cy'imashini ihinguraIgikoresho gifata cy'ibirenge 3 cy'imashini ihingura
Icyuma cyo kuca cy'itoreroIcyuma cyo kuca cy'itorero
Agatsiko k'ibitobora hagatiAgatsiko k'ibitobora hagati
Ibyuma Byinshi byo GucukuraIbyuma Byinshi byo Gucukura
Amavuta yo gukataAmavuta yo gukata
Ikigereranyo cya Digitale cy'Amasentimetero 6Ikigereranyo cya Digitale cy'Amasentimetero 6
Amadarubindi y'umutekanoAmadarubindi y'umutekano
2

Bore the cone

Set the compound slide to a shallow angle and bore the inside to a cone with the boring bar. Do not touch the compound setting again.

Ibikoresho bikenewe:

Imashini yo guhinguza icyumaImashini yo guhinguza icyuma
Igiti cyo gukata imbere mu mwoboIgiti cyo gukata imbere mu mwobo
Amavuta yo gukataAmavuta yo gukata
Amadarubindi y'umutekanoAmadarubindi y'umutekano
3

Turn the seat to match

At the same compound setting, turn the matching outside cone on the gear's hub or collar, taking light cuts until the ring sits on it with its face just short of the shoulder.

Ibikoresho bikenewe:

Imashini yo guhinguza icyumaImashini yo guhinguza icyuma
Icyuma cyo kuca cy'itoreroIcyuma cyo kuca cy'itorero
Ikigereranyo cya Digitale cy'Amasentimetero 6Ikigereranyo cya Digitale cy'Amasentimetero 6
4

Part off and bed in

Part the ring off, file off the burr, and lap ring and seat together lightly so they bear all round. Clean off every trace of compound.

Ibikoresho bikenewe:

Icyuma cyo guca ku ruzigaIcyuma cyo guca ku ruziga
Amakariso MenshiAmakariso Menshi
Ifu inozaIfu inoza

Ibikoresho

1

Ibikoresho bikenewe

12

Iki gishushanyo gikora

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Agateganyo

Uruziga rw'inkoni ruhuza rw'umuringa w'umuhondo

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Izi blueprint zisangira ubumenyi — uburyo, ibikoresho cyangwa amahame

Synchromesh

Synchromesh

na MartinNO

Ubucuzi bw'Ibyuma

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Facing and Turning to a Diameter: Taking a Cut You Can Predict

Facing and Turning to a Diameter: Taking a Cut You Can Predict

na ForgeNO

Ubucuzi bw'Ibyuma

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