DIVERSIFIED MACHINE INC. 2020 PRODUCT GUIDE
Important CT-1 Information
Tube To Axle Conversions
2-½ GN Tube Overall Tube Length + 6.5"
= Axle length
Smart Tube Style Tube Overall Tube Length +5.44"
= Axle Length
Wide 5 Tube Overall Tube Length +6.5"
= Axle Length
8 Bolt Tube Overall Tube Length +13.5"
= Axle Length
Popular Wide 5 Tube Lengths
Chassis LS Tube RS Tube
Mastersbilt, Warrior,
Moyer Victory Circle 28.125" 29.125"
Pierece & MBH 28.125" 28.125"
XR1 Rocket, Club 29 25.625 30.125
Lazer, Barry Wright, Bloomquist 27.125" 29.125"
Capital, Longhorn, Pre XR1 Rocket,
Pre 2014 Lazer 26.625” 30.125”
Popular SmartTube Style Tube Lengths
LS Tube RS Tube
Northeast DIRT Modified,
Bicknell, Troyer, Hig 20.188" 28.060"
Teo, PMC 22.188" 28.060"
Wide 5 vs. SmartTube Style
Axle length Smart Tube Style Axle Length =
Wide 5 Axle Length - 3"
Tube Length Smart Tube Style Tube Length =
Wide 5 Tube Length - 2"
2.5” GN Snout vs. SmartTube Style
Axle length SmartTube Style Axle
Length=2.5" GN Axle Length-1"
Tube Length SmartTube Style Tube Length=
2.5" GN Tube Length+.25"
Important Specs
Side Bell Nuts- 35 ft./lbs.
Threaded Ring Gear- 60 ft./lbs. w/ Red threadlocker
Pinion Retainer Bolts- 25 ft./lbs.
Front Seal Plate Bolts- 35 ft./lbs.
Front Yoke Bolt- 35 ft./lbs. with minimum blue threadlocker
Pinion Backlash- .004-.008
Rotational Pinion Preload (No Spool) - 25 in/lbs. @ 70° F
Rotational Pinion Preload (Complete Assembly) - 35 in/lbs. @ 70° F
Starting recommendations for Shims CT-1 Left .024” Right .055”
Starting recommendations for Shims SS-1 Left .035” Right .035”
Starting recommendations for EZCT-1 Left .032" Right .038"
Starting recommendations for EZSS-1 Left .045" Right .040"
Approximate Tube Weights
(Weights may vary by tube length)
Description Weight
SmartTube Steel 11.5 lbs.
Steel 2.5 GN 13.5 lbs.
Moly 2.5 GN 11 lbs.
SmartTube Alum 5 lbs.
Steel Wide 5 12.5 lbs.
Aluminum Wide 5 6 lbs.
Aluminum Deuce N’ Half 6.5 lbs.
Heavy Steel Deuce N’ Half 38.5 lbs.
Heavy Steel 2.5 GN 31.5 lbs.
Heavy Steel SmartTube 36.5 lbs.
Heavy Steel Wide 5 20 lbs.
All SmartTube Style Axle Tubes Built for Northeast DIRT
Modified that require the birdcage timing set are installed
at 0° unless requested otherwise.
All tubes insert into bell 5". When determining tube
length, measure from end of tube to face of tube opening
in bell and add 5".
Weight Savings of Some Popular Options
CT-1 4.86 w/o tubes = 72 lbs.
Description Savings
4.12 Ring & Pinion .75 lbs.
EDM Ring Gear .80 lbs.
9" Ring Gear 2.82 lbs.
Aluminum Yoke 1.37 lbs.
Gundrilled Lower Shaft 1.10 lbs.
Ultra-Light Aluminum Spool .57 lbs.
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