Drum brake on a moped?
At what speed do you think you should switch from drum brakes to disc brakes on a moped (old enduro)? (I want to tune an old enduro a bit and convert it to a cross bike so I can ride in the woods with friends.)
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Moped? So a maximum of 50 km/h?
You don't need to change trains.
If you mean "Mopped," the affectionate colloquial term for motorcycle, then a disc brake at the front would certainly be worthwhile, but whether the conversion is legal and whether the components (frame, suspension fork) can absorb and dissipate the forces is questionable.
The Trabant also handles drum brakes. You just have to drive with foresight and not overdo it.
No, I want to buy a Honda mtx 80 and then convert it to a cross and tune it a bit because of that
Then you have to discuss this with a testing organization (TÜV, Dekra, GTÜ, etc.).
You could change everything and pay a lot of money at the MOT, only to then have to undo everything.
But who wants that?
It's better to discuss it with them right away and then make changes. This will make the acceptance process much easier.
Is this your forest, or is this illegal driving?
In the forest, at 140 km/h, you don't need any brakes. The trees take care of that. 🤣 (No offense intended. It just seemed appropriate.) because…
You won't reach these speeds with an 80cc in the winding forest because you don't have enough straight road ahead.
However, if you actually reach that speed, a disc brake is recommended. A drum brake is sufficient at the rear, since the rear wheel is relieved of weight during braking anyway and should therefore brake less.
Oh sorry, I forgot to mention that I don't ride it on the road. I ride in the forest with friends. That's why I was wondering if I should install disc brakes when I tune it at around 120-140 km/h.
My grandfather drives a BMW R65, which can do maybe 200, and it also has drum brakes.
Since you have a moped, you can officially drive up to 50-60 km/h. If you perhaps add mods and manage to go over 50, I would simply continue to use the brake if it works well.
Not true. At least 45 km/h (up to 60 km/h) is correct.
Ah, okay, I based it on an old Hercules that our household used to have. Still, the brakes are sufficient.
This has nothing to do with speed; the disc brake is a technical development of the brake.
Not at all the drum brake is completely sufficient for a moped