DAF Variomatic at work

This video shows a working variomatic (CVT transmission) from a '79 Volvo 66

Category:

Autos & Vehicles

Tags:

• CVT
• Variomatic
• Daf
• transmission
• volvo

[WickedTRX]

allways thought that these cars didn't had a differential, and each belt drove each rear wheel, looking at the system now looks like the belts only divide the load an there's a regular diff, could anyone confirm that?

[bramjessen]

@WickedTRX All the other versions (600, 750, 3#, 44 and 55) use a system without a diff, like you described. Both sides can run at different speeds so there is some "diff-like" effect, but it reacts slower. The 66 (Daf and Volvo), 46 and later the Volvo 340 used a variomatic with diff like you see in this video. The 46 used a similar variomatic as the 66 and 340, but only with drums on one side, so using just one belt.

[heatherandpaul2]

WHat does it use for a clutch?? Torque converter, centripetal clutch?

[bramjessen]

@heatherandpaul2 It uses a form of centripetal clutch. It does use a normal clutch plate. Weights sling out and push the plate forward.

[trossachs2003]

whatever happened to this technology. Apparently it worked quite well on the Dafs. Did no-one else ever pick it up...I belive some scooters use it

[ichmalealsobinich]

I have driven a Daf 44 for nearly 6 years, my first automobile. The variomatic technique took its greatest advantages in the mountains in cooperation with the choke pulled out. When I had to climb a slope in the Eifel or Ardennes I had the rare pleasure to left MB and BMWs behind me.

[dalerobinsuk]

My dad had a Volvo 66 when I was a kid and could drive as fast in reverse as you could going forward!!

[bramjessen]

@MrWindsor289 Mostly marketing problems I guess....

There is also a limitation in horsepower/torque that a rubber belt can handle offcourse

[MrWindsor289]

@bramjessen What was wrong with cvts like this that they are not in use by automotive companies now? Why are they using that expensive solution with chain instead of this cheap rubber belt?

[bonsema1]

alomg with the famous Spyker 6 cyl. racing cars ot the early 1900´s, the DAF made a true , dutch , contribution to the car industry in the world. I think they built almost 1,000,000 of the little variomatic equipped cars including the ones sold under the Volvo name.

[pitstopsaki]

Что-то я не понял:так что,вариатор работает в открытом пространстве???Там же ремням пиздец придёт через 10000км

[boo66]

@trossachs2003 Most modern scooters use it, and all still pay a royalty to VanDoorne (not sure of spelling) bros!

[PPGCSuicide]

great Video, toll sowas mal zu sehen, von wegen Internet bildet nicht =)

[jaggass]

its amazing the faster the wheels go the rollers go further in.