CV Joint Conversion
After several years driving around in a Herald at top speed, the prospect of having a rear suspension set-up that didn’t try to kill you if you got your cornering wrong was quite attractive.
However, the Rotoflex set-up does have some drawbacks:
It is complicated and expensive to overhaul
It is rather heavy (but that’s another story)
The rotoflexes themselves can be rather short-lived especially some of the pattern ones.
I have had quite a bit of trouble with the rotoflex couplings themselves over the years – initially I think because a lack of bump stops meant excessive suspension travel and thus excessive drive shaft length-change, but also using ‘cheap’ pattern parts has proved to be an expensive mistake.
So, when they once again needed replacement, I pulled the whole lot apart and tried to get real Metallastic (now Trelleborg) replacements. This proved extremely difficult. Reluctant to condemn myself to repeating the job in a couple of years I decided to consider alternatives:
Pros: Pretty reasonable handling, simplicity, light-weight.
Cons: Relatively expensive due to the parts required. UJ life not great. Shafts can break. Tricky to get a swing spring able to take the weight of a well-laden Vitesse. Seems like a backward step.
Pros: Gets rid of the rotoflex
Cons: Questionable practice using a UJ and CV joint on the same shaft. Means sacrificing hard-to-get outer driveshafts, making it irreversible. Complex, expensive work to make inner shaft.