Home»Motor Mounts»Mountainboard Motor Mounts»SPUR GEAR DRIVE Mountainboard Motor Mounts»SGD TWIN with PULLEYS & FILTERS Mounted on a Hanger

TRAMPA's Generation III SPUR GEAR DRIVE Motor Mount is the ultimate drive system for off road riding! Made predominantly from T6 Aluminium, every piece has been precision made to give simple assembly & maximum performance.

The performance from the SPUR GEAR DRIVE Motor Mount is likened to a Motorcross bike - designed with insane torque for astonishing acceleration, top speeds & jumps. Opposed to the PRO BELT DRIVE Mountainboard, which is designed like a Motor-Enduro bike - for longer, more comfortable rides, and a bit more top-end speed.

The SPUR GEAR DRIVE Motor Mount will only fit to Precision CNC Hangers, using TRAMPA's special Conical Clamping system to securely attach onto the Hanger. The Assembly of any of the Pro Motor Mounts is incredibly sturdy & robust; perfect for the rough terrain they’ll be ripping across.

The SPUR GEAR DRIVE uses Helical or Straight cut gears. Helical Gears give a gear ratio of 1:5.8, whereas straight cut gives 1:5.9 – meaning straight-cut gears have more power when accelerating - however, Straight-cut gears are louder than the Helical when riding (although we’ve found some mad people who like the noise!).

You can further fine-tune the performance by changing the Rear Drive wheel size. Changing from 8” to 9” or 10“ Tyres has a massive effect on the performance of the board. Check out the Spur Gear gearing chart to see estimated top speeds of different tyre & pulley combinations.

It is only possible to fit the TRAMPA 5 Spoke Hubs to Pro Drive Slave Pulleys. This means the 5-Spoke Superstar & Megastar wheels fit no problem. However it is only possible to run 8, 9 or 10 inch tyres on the Pro Drives, due to low clearance around the housing tubs.

Spur Gear Slave Pulleys are made using premium POM plastic, giving them the best strength : weight ratio possible.

TRAMPA's EXTERNAL SPUR GEAR DRIVE is housed within a super strong, rubber-sealed Tub, CNC’d from a solid block of heat-treated T6 Aluminium. Ensuring all the moving parts are safe from the elements, as well as knocks and bumps that come along naturally when riding.

We recommend you service your board every three rides, or after any particularly tough ride. Check the hardware is tight, the gears are greased, & for any damage - particularly to the motor mounts/trucks. Ensure the tub is free from any dust/dirt. Servicing your board is important for keeping it running smoothly, as well as for your safety when riding.

TRAMPA's MkIII SPUR GEAR DRIVE (SGD) Motor Mount is a Super Powerful drive system that's designed to give maximum performance. It is the perfect option for 'Serious Off-Road Riding!'

The performance from the SPUR GEAR DRIVE Motor Mount is likened to that of a Motor-Cross bike - The solid gears inter-lock & as the motor turns supplying instant propulsion! There can be no 'slip' no matter how hard you push. 

The SGD has insane torque & gives astonishing acceleration. but it is still able to easily achieve, through a selection of different gearing options for different types of riders a 30mph+ top speed... Capable to handle aggressive riding, this board can be being ridden in the worst of conditions & also very good at hitting fair sized jumps like those found on your local BMX park. 

Comparably, TRAMPA's PRO BELT DRIVE (PBD) Mountainboard, which many customers wonder if this is the right board for them compared to the SGD, because of its sturdy Black anodised Aluminium protective Tub makes the Pro Belt Drive setup a sealed off system and just like the SGD preventing the the likes of crap from getting in, the PBD can still be ridden in bad conditions but is designed with gearing that is more like that of a Motor-Enduro bike which is less aggressive acceleration but therefore a higher top speed & should be selected for longer flatter rides as its somehow more comfortable for these kinds of rides & gives you a bit more top-end speed at the same time....

TRAMPA's 'SPUR GEAR DRIVE Motor Mount' will only fit to Precision CNC Hangers. Constructed using TRAMPA's special Conical Clamping system which securely tightens itself onto the Hanger, the Assembly of any of the TRAMPA Motor Mounts is incredibly sturdy & terribly robust 100% perfect for the rough terrain they’ll be ripping across.

The SPUR GEAR DRIVE Pulleys are produced in 2 ways. Originally using light weight POM material (Which is great for light weight riders) & now being also offered in Heat treated Steel alternatives (Which is great for the larger riders). POM is like a re-enforced plastic material & much less Heavy than a Steel option. The POM Pullies are offered in a 58 Tooth Helical cut (supplying a gear ratio of 1:5.8) &/or a 59 Tooth Straight cut gear (supplying a Gear ratio of gives 1:5.9) so the Straight cut pulley has 1 tooth more which means it will accelerate slightly faster than the 58 Helical (but barely anything in it really). 

Its claimed the Straight-cut POM gears run slightly louder than the Helical POM Gears, although the slight increased noise can be quite nice to hear, it gives a sense of speed & can be quite useful to alerting ramblers or pedestrians you are approaching or likely to approach around a blind corner that you might be traveling too fast into and therefore the slight noise alerts our fellow citizens of our approach which takes the fright of a surprise out of your potentially fast approaching presence... :-)

 Both POM Pullies options are wonderful for the lighter weight riders, say up to 80kg in weight, but sometimes not robust enough for the larger sized riders out there, 80kg+.... If your an aggressive rider but light weight then you should consider taking the steel Pullies as they are stronger for sure...

& so larger sized 'Fully grown BigBoys' out there that want the same performance as the light weigh riders they see in the videos they need the strongest equipment & with more gearing ratio to allow their extra weight/mass to have almost the same incredible performance as the lighter weighted riders, so we have made some Heat treated STEEL Slave Pullies. That's a ratio of 1-7 and will give incredible torque! So for riders that are big and need some gearing to shift them forwards fast, the 9/63 is the one for them. If your a light

You can further fine-tune the performance by changing the Rear Drive wheel size. Changing from 8” to 9” or 10“ Tyres has a massive effect on the performance of the board. Check out the Spur Gear gearing chart to see estimated top speeds of different tyre & pulley combinations.

CNC'd from a Solid Block of Super Strong Aluminium the SGD Tub is T6 Heated before being presented to you in a Glossy BLACK Anodised finish, with a TRAMPA logo running down its facing edge to give incredibly smart & co-ordinating good looks as well as maximum performance 100% of the time!

It is only possible to fit the TRAMPA 5 Spoke Hubs to SGD Slave Pulleys. This means the 5-Spoke Phatlads, Superstar & Megastar wheels fit no problem. However it is only possible to run 8, 9 or 10 inch tyres on the Pro Drives, due to low clearance around the housing tubs.

Spur Gear Slave Pulleys are made using premium POM plastic, giving them the best strength : weight ratio possible.

TRAMPA's EXTERNAL SPUR GEAR DRIVE is housed within a super strong, rubber-sealed Tub, CNC’d from a solid block of heat-treated T6 Aluminium. Ensuring all the moving parts are safe from the elements, as well as knocks and bumps that come along naturally when riding.

We recommend you service your board every three rides, or after any particularly tough ride. Check the hardware is tight, the gears are greased, & for any damage - particularly to the motor mounts/trucks. Ensure the tub is free from any dust/dirt. Servicing your board is important for keeping it running smoothly, as well as for your safety when riding.

CUSTOM Motor protection Housing - TWIN MOTOR

HALF CAGE  

This filter has been designed for those who want to save as much weight as possible while still maintaining a level of protection against grit and dust. 
 
The filter mesh is 0.15 mm, this will only allow particulates that are small enough to pass through the air gap between motor magnets and the stator. 

Allowing for consistent cooling of the motor while reducing wear on the motor. 

•Available in 10 colours. 

•Aluminium and stainless construction. 

•Compatible with Trampa motor fan. 

Pairing with the MKII Delrin Motor Housings, these fans secure to the ends of 6376 Motors, creating a cooling airflow around the motors - reducing running motor temp, and increasing efficiency! 

Motor Fan - Connects to the end of the Motor & Spins to help maintain temps low

Pairing with the new MKII Delrin Motor Housings, these fans secure to the ends of 6376 Motors, creating a cooling airflow around the motors - reducing running motor temp, and increasing efficiency!

After many different designs and prototypes, this shape has proved the most efficient at creating an airflow that made a real difference to the motors’ performance.
Attaches to the end of motors using 5x M3x16mm Countersunk bolts.

The KEYWAY connects between the Motor Pulley & the Motor Axle Shaft to eliminate slip under power 3x3x12mm

TRAMPA's Motor Axle Shaft to Pulley KEYWAY measures 3 x 3 x 8mm. It connects into the Motor Pulley when mounted onto the motor Axle Shaft & is used to center the pulley on the Axle & to assist in delivering all the power from the motor without slip! This KEYWAY will fit to all TRAMPA motors amongst others.

TRAMPA's Axle length measures 38.5mm (from motor housing to end of shaft) & has a Diameter of 8mm. The centre of the key (3 x 3 x 8mm) sits 16.70mm away from the Motor front. Front side of Motor to Center of Key! Deduct 4mm & you have the length from front side of motor to the start of key....

SPUR Gear Drive T6 Tub with TRAMPA Logo

CNC’d from a solid block of T6 heat-treated Aluminium, the SPUR GEAR DRIVE HOUSING is as strong as it is sleek. When paired with the CNC’d TUB COVER, the completed housing keeps the elements outs, the gears & belts clean & dry, & the whole board riding smoothly.
Designed to tightly slip around the CNC’d Hangers on Precision Vertigo Trucks, the Tub locks the entire drivetrain is accurately & securely in line.
With a bash-guard integrated into its design, you can be confident the tub will survive all the knocks-&-bumps its bound to receive on a ride.
Fits 10-tooth Straight or Helical Motor Pulleys & 58-tooth Helical or 59-tooth Straight-cut slave pulleys.
The Housing is perfectly symmetrical, allowing it to slide onto left or right drive trains.
 

TRAMPA SPUR Gear Drive T6 Aluminium Tub Cover

The Spur Gear Tub Cover is crucial to keeping your drive system free of dirt & debris. CNC’d from Premium Aluminium, giving it the perfect weight: strength ratio, the cover slots tightly over the Spur Gear tub, sealing off the drive system & leaving room for the Hub Adaptor & Rubber Seal. 

SPUR Gear Drive Bash Guard - RIGHT Side

Made using hardened steel, the spur gear bash guards are designed around taking the brunt of any hits away from the drive train.

Fits to the right drivetrain.

SPUR Gear Drive Bash Guard - LEFT Side

Made using hardened steel, the spur gear bash guards are designed around taking the brunt of any hits away from the drive train.

Fits to the left drivetrain.

SPUR Gear Drive Motor Adaptor

Housing a precision bearing for Motor Axle Support the SPUR GEAR DRIVE Motor Adaptor is used for attaching the motor securely to the drivetrain.
Precision CNC’d from hardened steel, the Motor Adaptor also allows for the use of PRO MOTOR HOUSING.

SPUR Gear Drive Hub Adaptor

The Hub Adaptor attaches the Slave Pulley to the Hubs, delivering the power of the motors to the wheels. Connects to SUPERSTAR or MEGASTAR hubs.

Precision CNC’d from Hardened Steel.

Connects to Slave Pulley using 5x m5x12mm Torx head screws.

Spur Gear Drive 57 Tooth 17.5º HELICAL Slave Pulley - c45 Hardened Steel

Spur Gear Drives are compatible with Straight-cut or Helical Gears.
CNC’d from hardened steel, the 58-tooth Helical Slave Pulley pairs with the 10-tooth Helical Motor Pulley, giving a gear ratio of 1:5.8. Compared to the 59-tooth Straight-cut Slave Pulley’s ratio of 1:5.9, Helical gears will ultimately have a higher top speed.  

Helical Gears provide more surface contact between the teeth, resulting in a smoother & quieter ride.

Straight-cut Gears are the cheaper option – still providing amazing torque & performance, while running a bit louder than helical.   

Connects to Hub Adaptor using 5x m5 x 12mm Torx head screws.

Spur Gear Drive 10 Tooth 17.5º HELICAL Cut motor Pulley - c45 HARDENED Steel Nitriding

10-Tooth helical-cut Motor Pulley for Spur Gear Drive

Helical Gears provide more surface contact between the teeth, resulting in a smoother & quieter ride.

Mountainboard Motor Mount V-Ring TUB Seals - Fits both BELT & SPUR Gear Drive Motor Mounts

This rubber seal fits to the PRO BELT DRIVE & the SPUR GEAR DRIVE, and prevents dust & dirt from getting inside the motor mounts. Like many parts, you should check over & clean this seal after every few rides, to ensure it’s doing its job, and it isn’t on it’s last legs!

When installing this seal, be sure that the ‘V-side’ of the seal is facing outwards, towards the tub. You may need to get a small knife or ruler to slip behind and reposition it as you go.

Mountainboard Motor Mount Truck Connector

Works with PRO BELT & SPUR GEAR Drives.
The Clamp housing slips over the axels of Precision CNC’d Vertigo Trucks, ensuring the drivetrain sits at the correct angle.
Working in conjunction with the Conical Clamp, when connected together the housing squeezes the clamp to the hanger, securely attaching the drivetrain to the trucks.

Precision CNC’d from T6 Heat-treated Aluminium.

Mountainboard Motor Mount Connector Conical Clamp

Works with PRO BELT & SPUR GEAR Drives.

Designed to work in conjunction & attach securely to Precision CNC’d VERTIGO trucks, the Conical Clamp slips tightly over the CNC’d square on the hanger of the trucks. When attached to the Clamp Housing, the Conical Clamp tightens around the hanger, ensuring secure & accurate Motor Mount attachment.

Precision CNC’d from T6 Heat-treated Aluminium.

Mountainboard Motor Mount Rubber pad for Conical Clamps - Fits both BELT & SPUR Gear Drive Motor Mounts

This rubber seal fits to the PRO BELT DRIVE & the SPUR GEAR DRIVE, and prevents dust & dirt from getting inside the motor mounts. Like many parts, you should check over & clean this seal after every few rides, to ensure it’s doing its job, and it isn’t on it’s last legs!

When installing this seal, be sure that the ‘V-side’ of the seal is facing outwards, towards the tub. You may need to get a small knife or ruler to slip behind and reposition it as you go.

M4 x 10mm TORX Countersunk bolt Marine Grade Stainless Steel

TORX Screws are less likely to strip out when compared to a hex screw, because of the way the load is distributed and applied between the tool and the hardware. Because of this load distribution, the height of the head of the bolt can be reduced - making them nice & flush. 

Made from A4 Marine Grade Stainless Steel, all of the nuts, bolts & screws used in a TRAMPA board have proven to be up to the challenge of holding everything together. Using Marine Grade Stainless Steel also means these Bolts will never rust on you! They can cope with the harshest of weather conditions & will laugh in the face of sandy/salty beaches or muddy freeride tracks - which can turn other manufacturers’ nuts & bolts into corroded rusting wrecks!

Wherever possible, we dip all our bolts into BLUE THREAD LOCKING PASTE, to ensure an extra strong & secure fix between the nuts & bolts.

M3 x 18mm TORX Countersunk Head Bolt Marine Grade Stainless Steel

Made from A4 Marine Grade Stainless Steel, all of the nuts, bolts & screws used in a TRAMPA board have proven to be up to the challenge of holding everything together. Using Marine Grade Stainless Steel also means these Bolts will never rust on you! They can cope with the harshest of weather conditions & will laugh in the face of sandy/salty beaches or muddy freeride tracks - which can turn other manufacturers’ nuts & bolts into corroded rusting wrecks!

Wherever possible, we dip all our bolts into BLUE THREAD LOCKING PASTE, to ensure an extra strong & secure fix between the nuts & bolts.

The head of this Bolt is COUNTERSUNK, meaning that when screwed into position it sits flush & neat with the surface its screwed into. Preventing bolts from standing proud eliminates the chance of anything getting "snagged or hung-up" should it get caught on something..

Used For;

BIGGEST Beast Box

M5 x 12mm Dome Headed TORX Bolt DIN6912 Marine Grade Stainless Steel TORX

TORX Screws are less likely to strip out when compared to a hex screw, because of the way the load is distributed and applied between the tool and the hardware. Because of this load distribution, the height of the head of the bolt can be reduced - making them nice & flush. 

Made from A4 Marine Grade Stainless Steel, all of the nuts, bolts & screws used in a TRAMPA board have proven to be up to the challenge of holding everything together. Using Marine Grade Stainless Steel also means these Bolts will never rust on you! They can cope with the harshest of weather conditions & will laugh in the face of sandy/salty beaches or muddy freeride tracks - which can turn other manufacturers’ nuts & bolts into corroded rusting wrecks!

Wherever possible, we dip all our bolts into BLUE THREAD LOCKING PASTE, to ensure an extra strong & secure fix between the nuts & bolts.

M4 x 10mm TORX Dome/Button Headed Head Bolt Marine Grade Stainless Steel TORX

TORX Screws are less likely to strip out when compared to a hex screw, because of the way the load is distributed and applied between the tool and the hardware. Because of this load distribution, the height of the head of the bolt can be reduced - making them nice & flush. 

Made from A4 Marine Grade Stainless Steel, all of the nuts, bolts & screws used in a TRAMPA board have proven to be up to the challenge of holding everything together. Using Marine Grade Stainless Steel also means these Bolts will never rust on you! They can cope with the harshest of weather conditions & will laugh in the face of sandy/salty beaches or muddy freeride tracks - which can turn other manufacturers’ nuts & bolts into corroded rusting wrecks!

Wherever possible, we dip all our bolts into BLUE THREAD LOCKING PASTE, to ensure an extra strong & secure fix between the nuts & bolts.

M4 x 20mm Socket Capped Head TORX Bolt ISO 4762 Marine Grade Stainless Steel

TORX Screws are less likely to strip out when compared to a hex screw, because of the way the load is distributed and applied between the tool and the hardware. Because of this load distribution, the height of the head of the bolt can be reduced - making them nice & flush. 

Made from A4 Marine Grade Stainless Steel, all of the nuts, bolts & screws used in a TRAMPA board have proven to be up to the challenge of holding everything together. Using Marine Grade Stainless Steel also means these Bolts will never rust on you! They can cope with the harshest of weather conditions & will laugh in the face of sandy/salty beaches or muddy freeride tracks - which can turn other manufacturers’ nuts & bolts into corroded rusting wrecks!

Wherever possible, we dip all our bolts into BLUE THREAD LOCKING PASTE, to ensure an extra strong & secure fix between the nuts & bolts.

M5 x 5mm Black Steel Grub Screw Marine Grade Stainless Steel - Connects into Motor Mount to give Axle position on Mountainboards

Made from A4 Marine Grade Stainless Steel, all of the nuts, bolts & screws used in a TRAMPA board have proven to be up to the challenge of holding everything together. Using Marine Grade Stainless Steel also means these Bolts will never rust on you! They can cope with the harshest of weather conditions & will laugh in the face of sandy/salty beaches or muddy freeride tracks - which can turn other manufacturers’ nuts & bolts into corroded rusting wrecks!

Wherever possible, we dip all our bolts into BLUE THREAD LOCKING PASTE, to ensure an extra strong & secure fix between the nuts & bolts.

M5 x 20mm Regular Hex Head Bolt - Marine Grade Stainless steel with locking paste

Made from A4 Marine Grade Stainless Steel, all of the nuts, bolts & screws used in a TRAMPA board have proven to be up to the challenge of holding everything together. Using Marine Grade Stainless Steel also means these Bolts will never rust on you! They can cope with the harshest of weather conditions & will laugh in the face of sandy/salty beaches or muddy freeride tracks - which can turn other manufacturers’ nuts & bolts into corroded rusting wrecks!

Wherever possible, we dip all our bolts into BLUE THREAD LOCKING PASTE, to ensure an extra strong & secure fix between the nuts & bolts.

7/16ths Nut - Marine Grade Stainless steel Nylock Axle HALF nut (W7/16-20T UNF) - Fits to 12mm Axles

This very special 7/16_^ths of an inch Marine Grade Stainless steel Nyloc HALF NUT is custom made specially to fit the TRAMPA products. Half nut means - half as the size of a regular nut, so half the size = half the weight of a normal nut.. By using Half nuts on the axles reduces the over all length of the axle & kingpin therefore further reducing weight in the Truck! A few Grams here & a few grams there soon adds up & makes all the difference to the total Truck & consequently deck weight, specially in critical areas of the deck such as the wheels area, where a few grams makes all the difference...

This very special 3/8_^ths of an inch Marine Grade Stainless steel Nylock Half Nut official factory measurements are  W7/16 - 20T - UNF. This Nut is used to hold the wheels onto the axles of the Spring Trucks fitted with 12mm axles. The Nut is fitted as standard with the world renowned NYLOC System. The Nyloc "locks the Nut onto the Bolt" eliminating vibration, keeping your nuts tighter for longer!

Use a 16mm or 5/8th_^ths of an Inch spanner to tighten / loosen the Nut onto the Axle or Kingpin. Do not overtighten the nut & make sure the wheel can spin freely but does not rattle & do not crush your bearings. Being Marine Grade Stainless Steel this nut will not rust you! Always ensure all ur nuts are tight before you ride!

Wheel support spacer for all TRAMPA Wheels on 12mm ATB Axles - CNC precision 12mm x 16mm x 18.2mm - CUSTOM

This special Spacer measures 12mm (id) x 16mm (od) x 18.2mm (long) & has 2 uses!. It is firstly known as the Bearing Support Spacer as this Spacer fits between the Bearings of a 6 Spoked HYPA Hub, (when mounting the HYPA wheel onto 12mm Axles) & secondly it is also known as the AXLE SUPPORT SPACER as this spacer is also used to position any of the TRAMPA wheels in the perfect position onto the axles of 12mm TRAMPA Spring trucks....

TRAMPA spacers are produced as one long tube. The Tube is Heat Treated to gain extra strength & is then Bead Polished to give the metal extra surface protection & a shiny best appearance. The tube is then cut to the exact length for precision mounting. 

CUSTOM Precision Hanger using 12mm Axles - 16 Inch Wide

The ATB INFINITY HANGER is time proven as being the strongest ATB SPRING TRUCK Hanger on the market! Ensuring we deliver the maximum strength possible the hanger body of all of the Spring Trucks in the TRAMPA range are made from super strong FORGED ALUMINUM & this INFINITY hanger is one solid entity with no weight saving cut outs or or fancy Axels & weighs in as the Strongest!

The Infinity Hanger is machined on the underside to allow countersunk bolts to push through & position the springs in the correct locations. The Infinity ATB Trucks have been given 2 Spring position settings, allowing Inside spring position setting for easy/fast carve steering & outside spring position for larger sized or high speed thrill seeker riders!

The Infinity ATB Hanger is drilled & machine fitted with Heat Treated 12mm SOLID STEEL Axles. HEAT TREATING the steel axles makes them substantially stronger & far more resistant to impact - perfect for larger sized adult riders. 12mm Solid Steel Axles are slightly heavier than alternatives displayed on the TRAMPA website, but they are by far the strongest Axles in the TRAMPA range. Once the 12mm Solid Axles are machine fitted the INFINITY hanger measures 16 Inches at its widest points & when any of the 5, 6, 7 or even 8 Inch HYPA or SUPERSTAR wheels are fitted to the Hanger, the board has a center wheel base width (Center point of contact to the floor) of 14 Inches.

CNC milling usually guarantees precision work & that's why the Infinity hanger has had the Kingpin holes CNC machined insuring the Kingpin Holes are accurately placed guarantee's the best performance to the rider as well as making the truck easy to assembly & simple to service. Before the CNC work is completed the ATB Infinity Hanger is Anodised BLACK for metal protection.