Clutch and engine position

Moto Rumi technical problems or solutions
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hugomez
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Clutch and engine position

Post by hugomez » Sat Feb 02, 2019 12:34 pm

Hi,

I am trying to assemble new reinforced springs and clutch discs in the Bol D'Or, because the clutch was spinning a little bit in first gear, however I am a bit stuck right now trying to assemble it.

In the past I managed to do it several times without problem, however I always had the engine out of the scooter/motorcycle, allowing me to turn it into any desirable position.

Now I have the scooter on the bench and I do not want to lie it down to the side if possible, so I am trying to assemble to springs/clutch discs and clutch plates with the scooter in a vertical position, however it is extremely difficult as you can imagine.

I do not have the original Rumi special tool either. So to compress all, once in position, I will use two c-clamps.

Do you think that to keep the springs in place can I put some thick multipurpose grease on them?

I do not want to do this yet just in case the multipurpose grease is not good for the friction of the clutch.

What do you think?, Any idea that is not putting the scooter horizontal in the floor?

Thank you very much in advance.
Hugo :)
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hugomez
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Re: Clutch and engine position

Post by hugomez » Sat Feb 02, 2019 3:46 pm

Well, after trying many times unsuccessfully, I decided to do it in the way I didn't want, however it has been the only possible way with the tools I have. Luckily no damage at all while the scooter was lying down.

Now the new clutch discs set and new reinforced springs are in place, looking forward to get good weather here to see if the problem is solved.

:D
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greasy-fingers
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Re: Clutch and engine position

Post by greasy-fingers » Sun Feb 03, 2019 1:02 pm

Hi Hugo, i only just saw this so a bit late now, it is as you say much easier with the engine on its side, but I have done it many times upright by using a dab of multipurpose grease to hold each spring in position, I usually change the crankcase oil as soon as practical afterwards just in case.

hugomez
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Re: Clutch and engine position

Post by hugomez » Sun Feb 03, 2019 2:18 pm

greasy-fingers wrote:Hi Hugo, i only just saw this so a bit late now, it is as you say much easier with the engine on its side, but I have done it many times upright by using a dab of multipurpose grease to hold each spring in position, I usually change the crankcase oil as soon as practical afterwards just in case.
Hi Graham,

I appreciate your reply, you clarify my question about the grease on the springs. I didn't want to try just in case that could cause a problem. Good to know that this would be a solution for the assembling.

Another question:

Did you ever experienced that after installing new clutch discs, they are so thick that even with the clutch lever fully compressed the clutch is still not released?

Well, this is what I am experiencing right now. I am worry because another member of the forum mentioned to me by email that sometimes had to use sandpaper in brand new discs because otherwise they were too thick and got stuck.
I have use this same brand of sets in two other Rumi without any problems.
Maybe starting the engine and make some kilometers on it, playing with the clutch lever would make it eventually work?
Have you ever experience this problem?
Just as a reminder, the springs are harder than the previous I had on the scooter, so the combination of new clutch discs and new harder springs maybe was not very good idea. I should maybe only change the springs, or change the discs, but not both at the same time.

Any thought?
My little Formichino here: http://www.formichino.com/pictures1.html

greasy-fingers
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Re: Clutch and engine position

Post by greasy-fingers » Sun Feb 03, 2019 3:05 pm

I have not had this problem with a rumi clutch, but I have had to play around with plates to get clearance when converting lambretta,s from 4 to 5 plates on higher performance engines, regarding the springs - if the old ones have enough strength to stop the clutch from slipping in use they will be fine to re-use.

hugomez
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Re: Clutch and engine position

Post by hugomez » Sun Feb 03, 2019 3:26 pm

greasy-fingers wrote:I have not had this problem with a rumi clutch, but I have had to play around with plates to get clearance when converting lambretta,s from 4 to 5 plates on higher performance engines, regarding the springs - if the old ones have enough strength to stop the clutch from slipping in use they will be fine to re-use.
Hi Graham,

The reason because I change the springs and clutch discs is because from medium to high revs in first gear the clutch was slipping.

I do not know if the old springs with the new discs would solve the problem, or if the new spring with the old discs would also solve the problem, that is why I went for the full replacement.

The last thing I want to do is opening the engine again if possible. I think before doing that I will take a ride, play with the clutch lever while riding, and hope that eventually it will work, and if it doesn't, them I will open and change either the springs or the discs.

If anybody has a similar experience with a happy ending solving the problem while riding some kilometers, please let me know, them I will have some hope :lol:

Greets,
Hugo
My little Formichino here: http://www.formichino.com/pictures1.html

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