I have this rare 1969 AV92 Mobylette that came from Europe somehow.
Here are pictures http://s349.photobucket.com/albums/q369/jOHNNYdOUBE/?start=all

It does 48 on the flats.
It is dual variated.
I want to leave it toatally stock, BUT. . .

It does not downshift when I get to the top of short steep hills.
I have to let off and hold half throttle.
If I floor it again it goes to high gear again.
The rear spring seems o.k.

I just disassembled the front variator.
I will put on a varplus with 3 mid weights and 3 heavy weights.

I will tell you how it goes.
Oh yeah, this engine spins CLOCK-Wise.
and the engine is pretty powerfull, I have to say.
It was only $150 bucks and needed a belt and the points cleaned.

I just learned something about the engine rotation - thanks for posting that.
What size belt did you get for it?

Do your clocks run different from ours? On a normal, single variated moby, the engine runs the same way as the wheels. That,s clockwise. Because there's one gear in the relaybox and they didn't want to put one more in, that might cause extra trouble, they opted to just let the engine run backwards (counter-clockwise). The same with the BG models, driven by a roll on the tyre, acting as a gear and turning around the direction of the movement.
And yes, they are strong. The double variator works like a charm, but it's vulnerable to muck and really needs it regular greasing. The rear part might not be moving free enough, keeping the system from downshifting. If you don't adress it, it will get progressively worse, to the point, where you have to stop and push your moby backwards a little, to get a downshift. Then you will be so annoyed, that you will adress it.
Yours is the first model. After that, they mounted another headlight and heavier frontlegs and brake. There was also a model 92 gt, wich was equipped with the first AV10 engines and even bigger cylinder.

I lubed the rear pulley really good.

I think I put to much 'BELT STOP SLIP' on it.

Gonna try the varplus , but I can't get the variator apart.
Got last righty loosey bolt off, but cannot seperate.

There is a problem - belt dressing - you should not use belt dressing on a moped belt and especially a variated bike. On non variated bikes it can just pick up road crud and turn it into sandpaper which may or may not grip properly - on variated bikes it can also gum up sliding members and also stick to the cheeks.

Older variators had a right threaded fixed half, the later ones had two releifs cut into the sheeve shaft and the pulley had corresponting tabs. If you do not see the line of the tabs then it is threaded on - regular direction.

It came off with an impact, one quick hit to the right.


But, I cannot get the ramp plate seperated.

Looks like it got hit with a chisel, loike some one used a chisel once.The od of the 19262 it appears it got notched into the 16843,by a miss of trying to get the bolt off before with a chisel, by some hack mechanic beforehand.

If you need to get 20638 and 19262 put it in an old pot on the stove filled with water and bring it to a tourbulant boil, then take out the stuck together part and drop it on the floor.

Gonna to that tomorrow.

Was gonna use a propane torch, but water sounds like I won't screw anything up.

Thanks.

In the Motobecane instruction manuals they always say to heat to 100°C for the press fits. 100°C = 212°F or boiling point of water at sea level - very convenient to boil interference fit parts in a pot for five minutes of fast boiling then drop the part on the floor and the shock usually will release the parts.

I royally screwed up this time.

Afterheating part on top of Kerosene heater, I started dropping it a little.

I little turned a lot and then a piece of wood and a DEAD-Blow hammer went further.

Then Mr. Hammer bent the ramp plate a little. Then a lot. So I think it cant get worse now, because I have the only plate in existense.

Then I drop it one more time and noticed it spins a little.
So I spin left and it unscrews.

I feel like a jerk now that the plate is wasted.
Here is a pic in case someone knows of where to get one before I start searching.
It is different than the 50V variator, notice the stop point on it.
And the threads

I think it is because the belt is so large/wide, and it would come out at full variation.

I followed these directionshttp://web.archive.org/web/20060516231619/http://www.ventilxp.com/mob/index2.php?rub=technique/demontage+vario+embrayage+origine+mbk+51/article.php

The angle of the fixed plate (16844) is the same angle as the floating plate (19262) so perhaps you can convince it back into shape or check for an ornamental metal worker to do that for you. Finding a plate with 25x1,00 left thread will be difficult - probably a Motobecane only item.

I have 6 of the regular ones available,AV7 variators at home, but I need to press this back into shape, because of the spacer on it.

I checked scootbike, no go.

http://www.lesolex.com/catalogue_detail.php?piece_id=4707&PHPSESSID=a3b94f6e8594b86c93a3d29bd3e1707b
A LeSolex - flasque fixe variateur motobecane novi 6 euros

I wish I could see the other side and see if it has the thread sticking on the other side.

I will take a better picture.

I will call le solex, what time are they +5 or +6 GMT.

It is 7 a.m. here , maybe I should call, now.