Mechanique
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Detail photo from right hand side.
Detail photo from right hand side.
Viewed: 367 times.
Dropout filing.  Seatstays are clamped in a Cardinal vise with modified vee jaws which rotate about a vertical axis circa 1974 thanks to Stan at EPS.
Dropout filing. Seatstays are clamped in a Cardinal vise with modified vee jaws which rotate about a vertical axis circa 1974 thanks to Stan at EPS.
Viewed: 478 times.
Final step with another customer's frame is giving it a check on the old Marchetti alignment table.
Final step with another customer's frame is giving it a check on the old Marchetti alignment table.
Viewed: 379 times.
Roll stamping serial numbers into bottom bracket shells of a couple new frames coming up.  Stamps are held in a small fixture clamped in a Kurt machine vise while the bottom bracket shell is secured in an arbor held in a collet.  The collet is free to rotate in the Bridgeport mill while the stamps roll by under pressure.
Roll stamping serial numbers into bottom bracket shells of a couple new frames coming up. Stamps are held in a small fixture clamped in a Kurt machine vise while the bottom bracket shell is secured in an arbor held in a collet. The collet is free to rotate in the Bridgeport mill while the stamps roll by under pressure.
Viewed: 414 times.
LS 98gm fork crowns for lightweight racing cycles.
LS 98gm fork crowns for lightweight racing cycles.
Viewed: 257 times.
Long Shen front mech braze-on being modified to 31.75 to mate up to Reynolds 853 Proteam BX2185 seat tube 31.75 tapered to 28.6 x .8/.5x650.  Boss is held on a 1" rod stock turned to 9.5mm o.d.  Took half a day to machine the holder and a 3/4x1-1/8" alignment piece but the fit-up is excellent.  Now to convince Long Shen to cast a 31.75 front derailleur boss!
Long Shen front mech braze-on being modified to 31.75 to mate up to Reynolds 853 Proteam BX2185 seat tube 31.75 tapered to 28.6 x .8/.5x650. Boss is held on a 1" rod stock turned to 9.5mm o.d. Took half a day to machine the holder and a 3/4x1-1/8" alignment piece but the fit-up is excellent. Now to convince Long Shen to cast a 31.75 front derailleur boss!
Viewed: 270 times.
Brazed carbide mitre cutters in production.  Lathe turning 4140 air hardening steel cutter body shank to ten thousandths over three quarter inch.  Dorian negative round toolholder does the cutting with flooding coolant and a Royal live center to provide back end support.
Brazed carbide mitre cutters in production. Lathe turning 4140 air hardening steel cutter body shank to ten thousandths over three quarter inch. Dorian negative round toolholder does the cutting with flooding coolant and a Royal live center to provide back end support.
Viewed: 296 times.
Brazed carbide body 3/4" shank has been turned on the batch of 28.6mm cutters and this photo is of the turning operation to fit-up the carbide ring.  Next operation is grooving for the pre-form ring of 56% silver.
Brazed carbide body 3/4" shank has been turned on the batch of 28.6mm cutters and this photo is of the turning operation to fit-up the carbide ring. Next operation is grooving for the pre-form ring of 56% silver.
Viewed: 171 times.
Pre brazing of the carbide ring (sorta white top section) to the 4140 steel body.
Pre brazing of the carbide ring (sorta white top section) to the 4140 steel body.
Viewed: 183 times.
Grooving operation on the 4140 brazed carbide body using a Newcomer grooving tool.  The 1/16" silver rod from Prince/izant AWS A5.8 BAg-22 rod is turned into preform rings and placed into the groove.  The carbide ring fits over the turned surface with the silver ring in place facilitating the brazing process.
Grooving operation on the 4140 brazed carbide body using a Newcomer grooving tool. The 1/16" silver rod from Prince/izant AWS A5.8 BAg-22 rod is turned into preform rings and placed into the groove. The carbide ring fits over the turned surface with the silver ring in place facilitating the brazing process.
Viewed: 203 times.
28.6mm cutter bodies have passed through the lathe work turning the shank to around ten thousandths over three quarters of an inch diameter and the cutter end has been turned to fit the Ceratizit carbide ring.  Next up brazing the carbide ring to the body.
28.6mm cutter bodies have passed through the lathe work turning the shank to around ten thousandths over three quarters of an inch diameter and the cutter end has been turned to fit the Ceratizit carbide ring. Next up brazing the carbide ring to the body.
Viewed: 176 times.
stand03
stand03
Viewed: 118 times.
stand05
stand05
Viewed: 138 times.
Lathe turning brazed carbide mitre cutter bodies on the Clausing lathe in the Strawberry/Torch and File workshop.
Lathe turning brazed carbide mitre cutter bodies on the Clausing lathe in the Strawberry/Torch and File workshop.
Viewed: 105 times.
38.1mm brazed carbide mitre cutter bodies in process of turning the 3/4" shank to ten thousandths over size in preparation for finish grinding by McKenzie Tool Grinding Co.
38.1mm brazed carbide mitre cutter bodies in process of turning the 3/4" shank to ten thousandths over size in preparation for finish grinding by McKenzie Tool Grinding Co.
Viewed: 113 times.
38.1mm brazed carbide mitre cutter body drilling.
38.1mm brazed carbide mitre cutter body drilling.
Viewed: 95 times.
38.1mm brazed carbide mitre cutter body lathe turning to accept the carbide ring.
38.1mm brazed carbide mitre cutter body lathe turning to accept the carbide ring.
Viewed: 112 times.
38.1mm brazed carbide mitre cutter body after turning with carbide ring fitted pre-brazing.  Cutter head stock is purchased from Pacific Machinery and Tool Steel here in Portland with the trade name "Moly-Chrome Heat Treated AISI/SAE 4142".  This grade is quenched and tempered at the mill to a strong (UTS 125.000 psi, yield 105,000 psi, elongation 16%), tough yet machinable condition and usually requires no further heat treatment after machining.  Brazing the carbide ring to the cutter head will provide surface hardening to the cutter head.
38.1mm brazed carbide mitre cutter body after turning with carbide ring fitted pre-brazing. Cutter head stock is purchased from Pacific Machinery and Tool Steel here in Portland with the trade name "Moly-Chrome Heat Treated AISI/SAE 4142". This grade is quenched and tempered at the mill to a strong (UTS 125.000 psi, yield 105,000 psi, elongation 16%), tough yet machinable condition and usually requires no further heat treatment after machining. Brazing the carbide ring to the cutter head will provide surface hardening to the cutter head.
Viewed: 124 times.
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