DIVERSIFIED MACHINE INC. 2020 PRODUCT GUIDE
Important XR-1, XR-2, XR-3 & BB-1 Information
EDM Ring Gear
EDM ring gears decrease weight and increase flex. Ring gear bolts should be replaced and torqued
to 60ft. lbs. using blue threadlocker every 500 laps when using an EDM ring gear. EDM ring gears are
not recommended in high horsepower (800+) applications.
Accelerated Surface Finishing is an isotropic superfinishing process that hones and refines the critical
surfaces of components. This is not a plating or coating process, but a true substrate surface enhancement
that dramatically increase part life and performance.
All bearings are available with PROglide treatment. PROglide provides friction reduction. Utilizing
nano particles that act as sponges for oil PROglide has achieved unimaginable results. The process
adds no tolerance to the material being treated therefore the limits are nearly endless. Are you ready
to ride the Glide?
Swivel Couplers
DMI style swivel couplers and Winters style swivel couplers must be serviced every 6-8 races.
Disassemble, clean thoroughly, inspect and replace worn components. Pack liberally with DMI Swivel
Coupler Lube (Part# DMI-SWILUBE) and install in coupler, insert seal and install snap ring ensuring
engagement. On a Winters style the seal should be zip tied or safety wired to the driveshaft.
Shifter Mechanism
Proper shifter engagement / disengagement is critical to the service life of your Bulldog open tube
rear. Bulldog highly suggests using DMI Strato Shifter Assembly SRC-2400. Strato Shifter releases
all tension off rear internals when locked in gear. To set cable, place the rear in gear. Lock shifter in
gear. Adjust nuts on cable until cable falls onto shifter arm quick disconnenct with NO tension. Tighten
jams. Lift handle to disengage rear. Remove cable from quick disconnent and ensure that shifter arm
is fully out of gear. Reinstall cable onto arm and lock back in gear ensuring one last time the shifter is
properly locked in gear.
DMI didn’t guess when creating the specs every quick change rear is built to and we didn’t
copy the competitors. We rented racetracks, did extensive R&D and tested many different
rotational pinion preloads and pinion backlash settings until we found the perfect one. DMI
Bulldog Quick Changes are produced from 100% aircraft magnesium and that is a major factor
in the specification we developed. We know our quick changes feel tight when new but trust
us: They need to be that way to perform at their maximum potential.
Did you
know
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