What’s next? While our 3-Wheeler is in M3W Services in Southern France, Ana María and I discuss about other improvements that can be done to the vehicle. We still have many tasks on the list for Steve! Now we’re focusing on dynamic improvements!
And one of the best dynamic improvements offered by M3W Services – and exclusively – is the rear disc brake conversion.
During its presentation in the Geneva Motor Show in 2011, the new generation of the Morgan 3-Wheeler – known as the 5-Speeder – was equipped with a rear disc brake.
However, when the car came into production, Morgan Motor Company changed this rear disc brake for a drum brake. Why? It’s a fact that those first units shown in the 2011 Geneva Motor Show were prototypes and many modifications were done to the model when it came into production, but no one really knows the reason why they changed the rear disc brake for a drum…
Was this a wise decision? In my honest opinion, it was not. Don’t get me wrong: our 3-Wheeler rear drum brake always performed correctly, and the time we’re changing it, it’s still looking pretty good.
But that’s not a surprise, because our car is just two years and a half old, still has few kilometres, and in Madrid the weather is extremely dry reducing the risk of rust to the minimum.
Why have we decided to change the drum for this beautiful disc brake? First of all, because a disc brake has clear dynamic advantages compared to a drum one. Despite the modern drums perform pretty well, the disc is still a better option for many reasons, such as the lightness, faster cooling, no mushy feeling on the brake pedal when the pads get worn, not affected by water ingress and rust, etc.
In fact, the 3-Wheeler rear wheel drum’s cylinders are known to seize due to corrosion, causing the rear brake shoes to stick on.
For all these reasons, we decide to make this improvement on our Morgan. The M3W Services disc brake kit looks fantastic!
The kit was specifically designed for the Morgan 3-Wheeler, so it works perfectly balanced with the front disc brakes. When it comes to design a disc brake, you need to make the proper calculations and dimensional designs to get powerful and efficiently balanced front-and-rear braking system. It looks like M3W Services have done this perfect!
The quality of the materials looks fantastic, and despite every 3-Wheeler is hand-built and M3W Services found constructive and dimensional differences between cars, they managed to produce a high-quality kit that can be installed on any of our 5-Speeders.
The first test kits were mounted on Craig’s and Steve’s rockets last 2021 summer and tested under the hardest possible conditions. It is a fact that Steve was testing this kit in his black and orange high performance 3-Wheeler when we went to Grindelwald last September.
The trip was back and forth from Southern France to Switzerland, and I can tell you we were not driving precisely slowly in the French twisted roads and the mythical Swiss mountain passes! The rear disc brake performed amazing during the thousands of kilometres we made!
Have a look at the M3W Services webpage!
And this article written by Phil Gardner for the MTWC Bulletin highlights the benefits of this fantastic rear disc brake kit!
Microsoft Word – M3WServices Disc Brake Upgrade v0.2.docx (website-editor.net)
This disc brake kit fits perfect on our 3-Wheeler. It also includes the hand brake system, via a classic cable acting on a separate braking pad in the calliper. Neat and easy solution.
Once installed, the disc brake looks neat, in harmony with the wheel and the rear arm. The route of the brake fluid’s line and hand brake cable are so similar to the original drum brake ones, that everything is installed in a very clean way, without interferences with any other element of the car.
From the outside, it’s really hard to see that the car has a rear disc brake instead of the original drum. But from the dynamic point of view, we can feel a difference. The sensation while braking is more balanced, and with a harder feeling on the pedal. The braking power remains the same, but we really feel it’s easier to modulate and stop the car in a smoother way. Both Ana Maria and I feel more confident with the braking system now.
We think it’s worth to make this change, not only for the better reliability, but for the performance too! Another satisfying upgrade of our beloved little Morgan!
2 Replies to “Hangar works #25 – The rear disc brake conversion”
Another informative write up. It all looks good and works well from what I hear, other than the parking brake efficiency that is a bit marginal in passing the UK MOT test. Have there been any improvements to this over the earlier kits?
The parking brake is quite poor on mine right now. But I guess it’s just a matter of tighten the cable a little, as it seems loose in my case. I’ll let you know when I’ll readjust it.