The Elite Rayven is one of my favourite blasters. I love its aesthetics and the way it feels, and it's my go-to flywheeler. Sadly as I normally run it with 2 Barricade motors on 2 IMRs, its performance doesn't quite stack up to my EAT with OMW spring, and in games against similar level modded blasters (spring replaced springers), I can really feel the difference in power. So I departed on a quest to get more power from my beloved Rayven, and I entered the world of motor replacements.
The motors I settled on were Tamiya Mach Dash Pros. They're a 130-sized motor (same as the stock ones) designed for small model race cars, hence the dual sided shaft. Tamiya is also a very reputable brand, so I knew I would be getting a quality product that should last a while and take a fair bit of abuse.
Obviously the double sided shaft means that the motor will not slot straight in to the blaster, but the unwanted side of the shaft (the side on the red end bell) is easily cut off using a rotary tool.
Just some stats on the Mach Dash Pros if you're interested. (pulled straight from the Tamiya USA site)
Voltage(V) - 2.4-3.0 Torque (nM-m) - 1.3-1.8 RPM(r/min) - 20000-24500 Current (A) - 2.6-3.52 For reference I believe Barricade motors are rated to spin at around 15000RPM, though I'm not sure of the rated voltage.
I also wore in the Mach Dashes by running them for around 90 minutes off a single AA. This process reduces arcing as well as resistance, allowing for a better current draw and a longer life.
Besides just throwing in the motors and cutting the shaft, I also had to make some electrical adjustments to the Rayven. The only external evidence of the mods I've done to it is a small switch in the carry handle, which in the above picture is barely visible inside the shadow. You can see it much more easily in the picture below.
A standard Rayven rewire has only 3 wires, but my adjustments have requisited many more than that. Note the red endbells of the new Tamiyas in the flywheel cage. I've also switched the flywheels themselves for those from a Stryfe, as the Stryfe flywheels are lighter and spun up to a higher RPM, giving greater range.
Mach Dashes are rated for 2.4-3V, where most Nerf blasters use 6V, so some changes were needed. Where the Rayven's standard battery tray has 4 14500-sized (AA-sized) cells in series, I've modified it to have 2 sets of 2 series batteries in parallel (2s2p). The battery tray is also capable of running 2 batteries in parallel (1s2p), and this all has to do with the one switch just in front of the flywheel cage.
When the switch is forward, the tray is in 2s2p configuration, and when the switch is backward, the tray is in 1s2p configuration.
Since Mach Dashes are rated for up to 3V, a single IMR is already overvolting them, though the spin-up time isn't the best as the Mach Dashes do draw a lot more current than stock Nerf motors. A single IMR also doesn't have a great capacity, with only 700mAh. Hence to help provide more current as well as improve run time, I use two IMRs in 1s2p configuration. This provides maximum power and nets ranges averaging 22 or so metres at near flat (0-10 degree elevation estimated), and can reach 25m or more with stray shots. It's about on par with my personal modded EAT, which was the target.
Motor spin-up is much better than with stock motors, the Mach Dashes reach "decent range" RPM in half a second, and full RPM in about 0.75s.
For near-stock performance, I use 2AAs in 1s2p configuration. It spins up quite slowly (AAs have terrible current output) and gets performance similar to stock grey trigger blasters. I would much rather use a stock springer such as a Retal or EAT over this config, as the spin up time is really really slow. It's much like how a stock N-Strike Rayven performs.
In both the above two configurations, the switch also acts as a safety, as if it is in the forward position the blaster is in 2s2p configuration, and the empty battery slots break the circuit, preventing any revving.
For Uni games and indoor, I would use 4AAs in 2s2p configuration. Spin-up still isn't great (again AAs have pretty bad current output), however the range is much more respectable being near par with any Elite flywheeler running stock motors on 2 IMRs. This configuration is the whole reason I implemented the complicated switch mechanism and battery tray mods, as without them I would not be able to use AAs in a 2s2p configuration using the stock battery tray.
If the switch is moved to 1s2p configuration (backwards) with all four battery slots filled, then the Rayven behaves like it is in 1s2p configuration, getting near stock ranges.
Since there are so many motor replacement options, I thought I'd give my thoughts on why I didn't choose various other motors.
I'm quite happy with the way my Rayven is performing now, and it will probably see a lot of use in my Nerf games unless I do a complete Rapidstrike build.
The motors I settled on were Tamiya Mach Dash Pros. They're a 130-sized motor (same as the stock ones) designed for small model race cars, hence the dual sided shaft. Tamiya is also a very reputable brand, so I knew I would be getting a quality product that should last a while and take a fair bit of abuse.
Obviously the double sided shaft means that the motor will not slot straight in to the blaster, but the unwanted side of the shaft (the side on the red end bell) is easily cut off using a rotary tool.
Just some stats on the Mach Dash Pros if you're interested. (pulled straight from the Tamiya USA site)
I also wore in the Mach Dashes by running them for around 90 minutes off a single AA. This process reduces arcing as well as resistance, allowing for a better current draw and a longer life.
Besides just throwing in the motors and cutting the shaft, I also had to make some electrical adjustments to the Rayven. The only external evidence of the mods I've done to it is a small switch in the carry handle, which in the above picture is barely visible inside the shadow. You can see it much more easily in the picture below.
A standard Rayven rewire has only 3 wires, but my adjustments have requisited many more than that. Note the red endbells of the new Tamiyas in the flywheel cage. I've also switched the flywheels themselves for those from a Stryfe, as the Stryfe flywheels are lighter and spun up to a higher RPM, giving greater range.
Mach Dashes are rated for 2.4-3V, where most Nerf blasters use 6V, so some changes were needed. Where the Rayven's standard battery tray has 4 14500-sized (AA-sized) cells in series, I've modified it to have 2 sets of 2 series batteries in parallel (2s2p). The battery tray is also capable of running 2 batteries in parallel (1s2p), and this all has to do with the one switch just in front of the flywheel cage.
When the switch is forward, the tray is in 2s2p configuration, and when the switch is backward, the tray is in 1s2p configuration.
Since Mach Dashes are rated for up to 3V, a single IMR is already overvolting them, though the spin-up time isn't the best as the Mach Dashes do draw a lot more current than stock Nerf motors. A single IMR also doesn't have a great capacity, with only 700mAh. Hence to help provide more current as well as improve run time, I use two IMRs in 1s2p configuration. This provides maximum power and nets ranges averaging 22 or so metres at near flat (0-10 degree elevation estimated), and can reach 25m or more with stray shots. It's about on par with my personal modded EAT, which was the target.
Motor spin-up is much better than with stock motors, the Mach Dashes reach "decent range" RPM in half a second, and full RPM in about 0.75s.
For near-stock performance, I use 2AAs in 1s2p configuration. It spins up quite slowly (AAs have terrible current output) and gets performance similar to stock grey trigger blasters. I would much rather use a stock springer such as a Retal or EAT over this config, as the spin up time is really really slow. It's much like how a stock N-Strike Rayven performs.
In both the above two configurations, the switch also acts as a safety, as if it is in the forward position the blaster is in 2s2p configuration, and the empty battery slots break the circuit, preventing any revving.
For Uni games and indoor, I would use 4AAs in 2s2p configuration. Spin-up still isn't great (again AAs have pretty bad current output), however the range is much more respectable being near par with any Elite flywheeler running stock motors on 2 IMRs. This configuration is the whole reason I implemented the complicated switch mechanism and battery tray mods, as without them I would not be able to use AAs in a 2s2p configuration using the stock battery tray.
If the switch is moved to 1s2p configuration (backwards) with all four battery slots filled, then the Rayven behaves like it is in 1s2p configuration, getting near stock ranges.
Since there are so many motor replacement options, I thought I'd give my thoughts on why I didn't choose various other motors.
- Mabuchi FK180SH-3240 motors (usually colloquially known as "180s") are a popular choice as they have a good RPM and much more torque than most 130-sized motors, however as they are longer (being 180-sized) slots need to be cut in the blaster's shell to accomodate. As I love the Rayven's aesthetics and the motors already bulge out in the left side, I didn't want to cut holes to accomodate new motors, so 180s were not a choice for me.
- Polulu RM2s are a 130-sized choice that also run off stock voltage, and are incredibly cheap, however RM2s are notorious for their brushes burning out, and running them on 4AAs also results in extremely slow spin-up. I wanted motors that could spin-up fast, and so needed motors that could run on Lithium battery voltage increments (3.7V) reliably. It is possible to replace the brushes of RM2s with much better carbon brushes, however having accidentally broken open a motor before, I really don't want to have to open up another motor as it's quite annoying to get everything lined back up properly.
- Ranson 130s are motors that were available from various places on the internet and are rated to spin up to 77000RPM at about 16V, however they were significantly more expensive than the Mach Dashes I sourced, and at the time of looking for motors I couldn't find a source for them. They also have a larger than usual commutator, requisiting part cutting, which again I was against. Another downside of such a hot running motor, Ransons are known to burn out very quickly if run off of a high voltage (3s+) and not worn in correctly.
- Tamiya Torque Tuned motors are a recommended motor option by some, however after looking at the specs I felt that it didn't spin fast enough at the voltages I would be using (does 12000-13600RPM at 2.4-3V). The main purpose of the motor replacement was to get more power, and Torque Tuned motors would not give me the power I desire.
- Falcon 130s are a good 130 option that are also cheaply available from a Nerfer in Australia, and are reported to perform quite well run off LiPos of both 2s (7.4V) and 3s (11.1V), however I found out about those after ordering the Mach Dashes, and I also have a feeling that they would run too hot and draw a lot of current, which my pair of IMRs probably would not be able to handle. As is I'm having to run my IMRs in parallel to keep up with the current demand from the Mach Dashes.
- NSR Shark 3005s are one of the best 130-sized motors around, hitting 40k RPM when run on a 3-4s LiPo. They also have much more torque than most 130-sized motors, meaning faster spin-up and less RPM loss in rapid fire. Unfortunately, with such high specs also comes a high price, with Sharks costing around 4 times as much as most Tamiyas, making them by far the most expensive motors of all the ones I've looked at/heard of. Additionally Sharks run best off of a 3s LiPo, where all I have is 2 IMRs, which don't provide a high enough voltage or large enough current to get the best performance out of the Sharks.
I'm quite happy with the way my Rayven is performing now, and it will probably see a lot of use in my Nerf games unless I do a complete Rapidstrike build.