Ianhill
1 MW
- Joined
- Sep 25, 2015
- Messages
- 2,872
In this build I will take a razor e300 and transform it s ancient design completely into the modern age with lots of hacks but no bodges. I will tackle it stage by stage and show what I'm doing and the method to my madness with some pictures and technical info and answering any questions that's thrown my way.
First up handlebars and headset .
The stock razor 31.8mm mild steel bars and threaded headset utilizing caged bearings, it does the job for a basic ride up to 30mph but we want to go well beyond that.
So some digging around looking into stunt scooters reveals that the 1 1/8 bearing cup is still widely used but its a threadless mountain bike headset with cartridge type bearing.
View attachment 2
The stunt scooters use 3 main differing clamp options the one I'm interested in is a SCS clamp as shown below as it's the strongest of the lot.
There's also two handlebar thicknesses stock there is 31.8mm and then there is an oversized 34.9mm both come in alloy, mild steel, chromium and titanuim all have various benefits but the chromium is the best bet for price, good strength and longevity.
View attachment 3
Then comes the SCS clamp itself these have varying levels of strength and width most are set for the oversized bars and use a sleeve reduction for the 31.8mm narrow bars some have 4 × 5mm bolts and better ones have 4× 8mm bolts.
I can use the stock fork from the razor and cut it to length and fit a star nut inside to match the SCS image and clamp it all together with oversized chromium bars and that then is the handlebar section strong as it possibly can be.
All the parts I've shown I've ordered so this is an actual build taking place and I'll have my own photos as I go along, I'm undecided on going dual hub 7kw or single 3.5kw at the moment but I've ordered one so it's gonna happen at least so I'll finalize all that once I see one hub in hand and look around the front fork for inspiration as it will need to be 40mm or so wider, the rear is fine so I'll see how much trouble I want to make it and how well it performs with just the rear as it will be crazy light compared to it's bigger brothers of 40kg +, this will be around half their weight even less with a single hub and Lipo 20kg will be the upper limit.
First up handlebars and headset .
The stock razor 31.8mm mild steel bars and threaded headset utilizing caged bearings, it does the job for a basic ride up to 30mph but we want to go well beyond that.
So some digging around looking into stunt scooters reveals that the 1 1/8 bearing cup is still widely used but its a threadless mountain bike headset with cartridge type bearing.
View attachment 2
The stunt scooters use 3 main differing clamp options the one I'm interested in is a SCS clamp as shown below as it's the strongest of the lot.
There's also two handlebar thicknesses stock there is 31.8mm and then there is an oversized 34.9mm both come in alloy, mild steel, chromium and titanuim all have various benefits but the chromium is the best bet for price, good strength and longevity.
View attachment 3
Then comes the SCS clamp itself these have varying levels of strength and width most are set for the oversized bars and use a sleeve reduction for the 31.8mm narrow bars some have 4 × 5mm bolts and better ones have 4× 8mm bolts.
I can use the stock fork from the razor and cut it to length and fit a star nut inside to match the SCS image and clamp it all together with oversized chromium bars and that then is the handlebar section strong as it possibly can be.
All the parts I've shown I've ordered so this is an actual build taking place and I'll have my own photos as I go along, I'm undecided on going dual hub 7kw or single 3.5kw at the moment but I've ordered one so it's gonna happen at least so I'll finalize all that once I see one hub in hand and look around the front fork for inspiration as it will need to be 40mm or so wider, the rear is fine so I'll see how much trouble I want to make it and how well it performs with just the rear as it will be crazy light compared to it's bigger brothers of 40kg +, this will be around half their weight even less with a single hub and Lipo 20kg will be the upper limit.