Velopedia Bicycle Archive

1999 Tomac 78 Special

Original manufacturer specifications including Mountain Mix drivetrain, 26" wheels, geometry for 1 published size.

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What Velopedia knows

Model year
1999
Category
Mountain
Sizes
S, M, L
Colors
Guards Red
Geometry
Legacy reference · Geometry context
Record coverage
31 preserved details · archived image · preserved geometry
Archive ID
88419

Manufacturer catalog

Published sizes and colors

3 sizes · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

SML

Published colors

Guards Red

Frameset

Frame ConstructionMIG-welded
Frame MaterialEaston SC7000 Scandium alloy
ForkAnswer Manitou SX Ti, 3.15" travel
Fork MaterialAluminum/magnesium, triple-clamp crown
Rear ShockAnswer Bazooka, 3.0" travel

Drivetrain

Component GroupMountain Mix
ShiftersSRAM ESP 9.0 SL
Front DerailleurSRAM ESP 9.0SL, top-pull
Rear DerailleurSRAM ESP 9.0 SL
CranksetRace Face Turbine LP, 22/32/44 teeth
Bottom BracketRace Face Taperlock, 110mm spindle
BB Shell Width73mm English
Rear Cogs9-speed, 11 - 32 teeth
ChainSachs SC-M90, 1/2 x 3/32"
PedalsShimano PD-M747 SPD

Brakes

BrakesMagura Louise Disc brakes, Magura Louise levers

Cockpit & Contact Points

Headset1 1/8" threadless Race Face Real Seal
HandlebarProfile
Handlebar ExtensionsNot included
StemProfile
SaddleTioga Multicontrol XC
SeatpostProfile, 31.6mm diameter

Wheels & Tires

HubsMavic Crossmax Disc
RimsMavic Crossmax Disc, 26-hole/28-hole
SpokesMavic stainless steel, 2.0mm double-butted
Spoke NipplesAlloy nipples
Front Tire26 x 1.95" Tioga Factory XC kevlar
Wheel Size26" wheels

Historical reference geometry

Geometry

Legacy reference · 5 measurements

Historical model-level geometry recovered from Velopedia’s original archive database. The source does not identify which listed frame size this reference describes, so fit interpretation is intentionally limited and no size-normalized Archive Context is generated.

MeasurementLegacy reference
Top tube596.9 mm
Head-tube angle70.5°
Seat-tube angle72°
Chainstay / rear center422.3 mm
Wheelbase1076.3 mm

Geometry source: Historical archive database — model-level reference geometry. The historical source provides one model-level geometry set and does not identify the corresponding frame size.

Geometry tools

Explore this historical geometry

Model-level historical reference

Period context: At 70.5°, the head angle sits somewhat slacker than typical among mountain geometries represented in Velopedia for this period. Its 72° seat angle is toward the more relaxed end among the same-period mountain references.

Compared with 1159 distinct legacy mountain geometries from model years 1997–2001. Only angular measurements are used because the historical reference frame size is unidentified.
See it in periodOpen an immediate comparison with preserved 1999 mountain geometries. The source frame size remains unidentified.
See its 1999 geometry context

Parts & serviceability

Find replacement parts

3 top part searches
Bottom bracketQualified part search
Race Face Taperlock, 110mm spindle Named archived component — verify dimensions
PedalsExact archived part
Shimano PD-M747 SPD Exact archived model
CranksetQualified part search
Race Face Turbine LP, 22/32/44 teeth Named archived component — verify exact version
More qualified parts (3)
SeatpostMatching fit standard
31.6 mm seatpost Published diameter — verify length and setback
HeadsetQualified part search
1 1/8" threadless Race Face Real Seal Named archived component — verify dimensions
HubsQualified part search
Mavic Crossmax Disc Named archived component — verify dimensions

Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases. Commercial relationships do not influence Archive specifications or analysis.

Used-bike inspection

If you’re buying this bike used

Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.

Follow the full used-bike inspection order →
  • FrameLook closely for dents and hairline cracks around welds, the head tube and bottom-bracket area. Cosmetic scratches matter less than a change in shape or a crack line.Inspect the frame and fork →
  • BrakesBoth brakes should stop firmly and release without rubbing. Inspect pad thickness, rotor wear and alignment, and check the cables or hoses for damage.Inspect the brakes →
  • SuspensionAsk when the fork and shock were last serviced. Check the stanchions for damage, look for oil at the seals, cycle both units through their travel and test the suspension pivots for play.Evaluate the suspension →
  • DrivetrainShift through every gear under light load and measure chain wear. Confirm that the shifter, derailleur, chain and cassette belong to the same 9-speed system.Check drivetrain wear →
  • Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads.Check wheels and tires →
Bike-specific inspection checklist 22 checks based on 6 archived component groups Open checklistClose checklist
0 of 22 checked Progress stays in this browser for this bike.

This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: 1999 Tomac 78 Special · Mountain bike, front & rear suspension · Published sizes: S, M, L

Archived: Frame: MIG-welded · Fork: Answer Manitou SX Ti, 3.15" travel · Aluminum/magnesium, triple-clamp crown

Archived: Fork: Answer Manitou SX Ti, 3.15" travel · Rear shock: Answer Bazooka, 3.0" travel

Archived: Group: Mountain Mix · Shifters: SRAM ESP 9.0 SL · Front derailleur: SRAM ESP 9.0SL, top-pull · Rear derailleur: SRAM ESP 9.0 SL · Crankset: Race Face Turbine LP, 22/32/44 teeth · Bottom bracket: Race Face Taperlock, 110mm spindle · Rear cogs: 9-speed, 11 - 32 teeth · Chain: Sachs SC-M90, 1/2 x 3/32"

Archived: Brakes: Magura Louise Disc brakes, Magura Louise levers

Archived: Wheel size: 26" wheels · Rims: Mavic Crossmax Disc, 26-hole/28-hole · Hubs: Mavic Crossmax Disc · Front tire: 26 x 1.95" Tioga Factory XC kevlar

Controls and contact points

Archived: Headset: 1 1/8" threadless Race Face Real Seal · Handlebar: Profile · Stem: Profile · Seatpost: Profile, 31.6mm diameter · Saddle: Tioga Multicontrol XC · Pedals: Shimano PD-M747 SPD

Before and during the test ride

Follow the full used-bike inspection order →

Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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