Home»Motor Mounts»Mountainboard Motor Mounts»SPUR GEAR DRIVE Mountainboard Motor Mounts»PRO Belt Drive TO Spur Gear Drive conversion Kit

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.

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 - 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 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 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 HELICAL or STRAIGHT Cut Slave Pulleys Made from POM or Steel

Spur Gear Drives are compatible with Straight-cut or Helical Gears.
Made from premium POM plastic, 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 CUSTOM Motor Pulley - c45 HARDENED STEEL

SPUR GEAR DRIVE Motor Mounts can run using Helical or Straight-cut pulleys.

Helical Motor Pulleys give a gear ratio of 1:5.8 when paired with the 58 tooth Helical Slave Pulley. The Helical shape allows for more surface contact between the Slave & Motor Pulley Teeth, creating a quiet & efficient drive. 

Straight-cut Motor pulleys pair with a 59 tooth Slave Pulley, giving a ratio of 1:5.9 – meaning there will be a tad more power when accelerating in comparison to the Helicals. However, due to less surface-contact between the gears, Straight-cuts are much louder when riding along (although we’ve found some mad people who like/prefer the noise!).

Made using Hardened Steel.

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.