2020 SALVAS MUDboss CLASS rules
(effective april 1st 2020)
1.1 – Any minor modification to the body must be approved before being allowed
2. CHASSIS
2.1 – TRAXXAS 2wd (SLASH or RAPTOR) chassis only
2.2 – Original MFG suspension parts only, no other parts allowed (such as from RPM)
2.3 – Original MFG chassis parts only, no aftermarket hop-ups, no optional aluminium parts
2.4 – Front bumper, right side bumper and front body post brace must be removed
2.4.1 – Left side and rear bumpers can also be removed (if desired) **rear RPM bumper is allowed** 2.5 – TRAXXAS front optional bumper (TRA2735) can be used (angled down)
Rear RPM Bumper part Number 81005
2.6 – Major alterations to the chassis or modification to drivetrain/suspension components is not allowed 2.7 – Electronics (rx/esc/amb) must be installed within chassis surface (no outside installation)
2.8 – Battery brace can be trimmed to allow different LiPo battery wire configuration
3. ELECTRONICS
3.1 – ROAR legal 17.5 and 13.5 sensored brushless motor
http://roarracing.com/approvals/print_brushlessmotors.php (approval date is set to August 1st 2018)
3.2 – spec SPEED CONTROLLER (no timing (boost) option possible….ie TEKIN SPEC, HW Justock, NOVAK GTB(#)/Edge…or any other ESC that has no timing (boost) profile available)
3.3 – Original TRAXXAS 2075 servo
3.3.1 – TRAXXAS 2075x (servo) AND TRAXXAS 2072x (gears) are allowed as ‘alternative’ parts/servo
3.3.2 – The “SAVOX SC-0252MG Digital Servo” is allowed, this is an ‘alternative’ servo
3.3.3 – SAVOX gear set (SAVSGSC0251MG) can be used to ‘upgrade’ the TRAXXAS 2075 to metal gears
3.4 – it is allowed to ‘pin’ the servo saver(white) or bell crank(black)…be advised the servo gears might get broken under a heavy crash!!!
3.4.1 – original TRAXXAS plastic servo saver/bell crank only (white or black system) it is allowed to mix the components
(ie.. black servo horn with white bell crank)
3.4.2 – It is allowed to use a solid (one piece) servo horn (any brand)
3.5 – 2-cell 7.4v LiPo battery with a maximum of 5200mah and 50c, with external plug only (no “bullet type” connector)
4. ADJUSTMENTS
4.1 – TRAXXAS 76/83/86/90 spur with all transmission parts in place (slipper)
4.2 – Any pinion size
4.3 – No modifications can be made to the transmission’s case (ie.. to allow a bigger gear ratio)
4.4 – The gear cover must be off at all times to allow for visual inspection (CARPET)…and removed if asked (DIRT)
4.5 – The only adjustments allowed to the car are those allowed by the original MFG components of the car
4.6 – You are allowed to use any original wheel spacer combination (Black, Grey or any combination of both types)
4.7 – Transmission functionality rule (motor can not spin while turning slowly one rear wheel a full turn)
4.8 – Traxxas SLASH *STEEL* transmission gears only (internal plastic transmission gears not allowed)
4.9 – Adding weight (in any way) is not allowed, wheel balancing is allowed (sole purpose of balancing, not to add weight)
5. SUSPENSION
5.1 – TRAXXAS 2WD plastic shocks only (grey or black version) (fronts in front, rears in rear)
5.2 – Original Rear(TRAXXAS 5858) and Front springs (TRAXXAS 5857) (no LCG kit springs or aftermarket springs)
5.3 – Front springs may be cut in order to shorten them (no more than 5 round removed on ONE end)
5.4 – The shock’s travel may be shortened with internal shims (ie..fuel tube or solid shims…)
5.5 – Original shafts in original cylinder (length and type in proper cylinder)
5.6 – Original pistons from kit only (original 1,2 or 3 hole), no modifications can be made to them
5.7 – No front bump stop suspension, a single original blue bump stop can be used per rear shock (not mandatory)
5.8 – No shimming allowed (to reduce slop in suspension parts)
5.9 – All suspension parts (such as A-Arms) must remain in original positions it was designed for (no swapping left to right)
5.9.1 – rear camber links must remain in original height position (upper hole on shock tower not allowed)
6. CARPET OVAL (SMALL BLOCK CLASS) SPECIFIC RULES
6.1 – TRAXXAS Low CG chassis is allowed
6.2 – ROAR legal 17.5 sensored brushless motor (Stock 17.5 / Spec)
6.3 – JACO tires (JAC2055LP) only **can be trued**(must keep its FULL WIDTH, it is allowed to round the edges)
6.4 – Plastic Wheel cap are allowed with a max dia of 3.125” and must be secured with a min of 2 screws/wheel
6.5 – You may use a bead of “CA” type glue or ‘’tape’’ to the RIGHT FRONT tire side wall to reduce the car’s aggressiveness 6.6 – ODORLESS tire additives only (ie..SXT, J-DUB…)
6.7 – all other rules specified earlier in sections 1-2-3-4-5 stays the same