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PostPosted: Thu Aug 24, 2017 8:06 pm 
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Hi,

Small little step. Just finished re-painting the cylinders.

BEFORE:
Attachment:
Moto-Rumi-Scoiattolo-Cylinders-before-paint-01.jpg
Moto-Rumi-Scoiattolo-Cylinders-before-paint-01.jpg [ 51.78 KiB | Viewed 1744 times ]

Attachment:
Moto-Rumi-Scoiattolo-Cylinders-before-paint-02.jpg
Moto-Rumi-Scoiattolo-Cylinders-before-paint-02.jpg [ 44.36 KiB | Viewed 1744 times ]

Attachment:
Moto-Rumi-Scoiattolo-Cylinders-before-paint-03.jpg
Moto-Rumi-Scoiattolo-Cylinders-before-paint-03.jpg [ 45.73 KiB | Viewed 1744 times ]

Attachment:
Moto-Rumi-Scoiattolo-Cylinders-before-paint-04.jpg
Moto-Rumi-Scoiattolo-Cylinders-before-paint-04.jpg [ 43.05 KiB | Viewed 1744 times ]


AFTER
Attachment:
Moto-Rumi-Scoiattolo-Cylinders-painted-01.jpg
Moto-Rumi-Scoiattolo-Cylinders-painted-01.jpg [ 69.39 KiB | Viewed 1744 times ]

Attachment:
Moto-Rumi-Scoiattolo-Cylinders-painted-02.jpg
Moto-Rumi-Scoiattolo-Cylinders-painted-02.jpg [ 72.01 KiB | Viewed 1744 times ]

Attachment:
Moto-Rumi-Scoiattolo-Cylinders-painted-03.jpg
Moto-Rumi-Scoiattolo-Cylinders-painted-03.jpg [ 69.14 KiB | Viewed 1744 times ]

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PostPosted: Tue Sep 05, 2017 9:05 am 
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Hi,

The crankshaft I am going to mount in this engine is not the one that was originally there, so I removed out the clutch basket that was on this replacement crankshaft, and mount the original clutch basket on it. The reason is because apparently to avoid extra noise, is good to keep the clutch basket with the original other gears if possible, and in this case it is possible.

More soon.

Attachment:
Moto-Rumi-Clutch-basket---crankshaft_01.jpg
Moto-Rumi-Clutch-basket---crankshaft_01.jpg [ 90.27 KiB | Viewed 1713 times ]

Attachment:
Moto-Rumi-Clutch-basket---crankshaft---Engine-02.jpg
Moto-Rumi-Clutch-basket---crankshaft---Engine-02.jpg [ 93.02 KiB | Viewed 1713 times ]

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PostPosted: Wed Sep 06, 2017 5:29 pm 
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Hi Hugo, it is a little late now, to advise you to never hold a crank in a vice across two flywheel discs, as this can knock the crank out of alignment. Only ever grip a crank by a single flywheel disc, that being the one which is on the shaft end being worked. I have seen a perfect shaft fall out of alignment by as much as 0.010", especially where the removal or tightening of nuts was involved or bearings being replaced.

Ian


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PostPosted: Wed Sep 06, 2017 10:15 pm 
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Hi Ian, I know, know, I really hope it's not out of alignment. I didn't tight much, so I hope everything is in place.

Aiaiaiaiaiiii

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PostPosted: Thu Sep 07, 2017 8:41 am 
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The piston rings arrived!!, thanks Rudolf :D

Attachment:
Moto-Rumi-piston-rings.jpg
Moto-Rumi-piston-rings.jpg [ 127.89 KiB | Viewed 1685 times ]

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PostPosted: Sun Nov 19, 2017 7:53 pm 
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Hi,

Very soon I will apply the undercoating protection in the interior side of the Scoiattolo body, to protect it and also to reduce noise. Rudolf explained me the areas where I should apply it and where I should not, however my fish memory is playing me again, so now I do not fully remember where I should not apply this undercoating protection.

One of the areas that I am almost sure I should not apply it, is where the engine attach to the body, that is why I have mount the upper half of the engine temporary, to mark it. I will remove that engine half before I start applying the undercoating protection.

I will also cover the hole of the fuel tank to avoid any of this product to go inside the fuel tank or at the thread of the fuel tap. At the thread for the rear suspension I will also do not apply that protection, obviously.

Beside the area of the engine, is there any other parts where I should NOT apply the undercoating protection?

Thank you very much in advance.

Attachment:
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-01.jpg
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-01.jpg [ 82.35 KiB | Viewed 1472 times ]

Attachment:
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-02.jpg
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-02.jpg [ 55.32 KiB | Viewed 1472 times ]

Attachment:
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-03.jpg
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-03.jpg [ 82.79 KiB | Viewed 1472 times ]

Attachment:
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-04.jpg
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Attachment:
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-05.jpg
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-05.jpg [ 66.55 KiB | Viewed 1472 times ]

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PostPosted: Sun Nov 19, 2017 10:09 pm 
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Hi Hugo, alternatively you could use Waxoyl or ankor was under there.


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PostPosted: Sun Nov 19, 2017 11:15 pm 
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greasy-fingers wrote:
Hi Hugo, alternatively you could use woxoyl or ankor was under there.


Hi Graham, thanks for these two other alternative products. At the moment I guess I will carry on with the one I bought already. Seem that this product is intended for that purpose. At the specifications said not only about the protection but also about the noise reduction, so I guess it should work (I hope).

My main concern at this moment is to know where I should not apply it.

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PostPosted: Mon Nov 20, 2017 8:43 am 
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It's personal choice, but I stopped using underseal and replacing with protective wax on my vehicles over 30 years ago, undeseals are good applied to certain metals. But on something quite flexible like this can split with age and let damp stand against the bodywork, ankor wax or similar is used by all vw camper owners I know to protect their similarly flexible steel bodies. Regarding noise reduction - in my opnion rumi,s make the best noise of any vehicle on the road.


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PostPosted: Mon Nov 20, 2017 9:41 am 
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:D Completely agree with you Graham, the sound that came out of the engine is fantastic. The noise reduction I am talking about is the one made from the body metal if it is not protected with this type of products, not the one from the engine. As you know the "body shell" of the Scoiattolo is thin and with the movement and vibration of the engine would resonate making unpleasant noise. The Formichino do not have this problem because of the nature of his body. But I guess I am not saying anything that you do not know already.

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PostPosted: Mon Nov 20, 2017 10:30 am 
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Ha ha, yes Hugo i have used my Scoiattolo,s for a few miles. Like i said its just personal choice regarding what protection you use on the underbody, there are plus and minus for everything - I have heard that the wax type ones can make things difficult if you need to repaint the outside bodywork at a later date as it can have seeped through at the seems and will affect the new paint if not completely removed etc etc. I would still not worry about the noise thing though - I don,t think my Scoiattolo,s make any nasty noises certainly not for the riders ears, and i know certain riders said they would follow me during the Moto Giro for a mile or two each day just to listen to the song from my exhausts.


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PostPosted: Mon Nov 20, 2017 11:19 am 
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Thank you Graham. Well, from factory the Scoiattolo is coming with this protection/noise reduction layer, so I do not see a reason why it should make a nasty noise.

In my case, before sandblasting the body (inside and outside), we removed this layer of protection because it was crack, dry and old, so now the interior is bare metal (beside for the layer of temporal primer), that is why now I have to add again this layer of protection/noise reduction product.

I do not doubt other riders follow you for a while to hear "the music" of your Rumi, it is certainly an amazing beautiful motorcycle sound. :D

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 Post subject: Piston size
PostPosted: Thu Nov 23, 2017 11:04 pm 
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Location: Burton upon trent
Lars wrote:
.........................
Since you are going to replace the pistons: Are you able to source pistons of the correct dimensions, or are you planning to have the cylinders re-bored?
..................
Lars


Maybe the factory size for pistons is 42.2 so any oversize piston will start larger than that.

A fine looking machine you have there. I have never seen one myself.


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PostPosted: Thu Nov 23, 2017 11:11 pm 
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I just noticed there are some Rumi pistons on ebay italia 42.1 dia


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PostPosted: Thu Nov 23, 2017 11:13 pm 
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there are 42 dia pistons too.


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PostPosted: Thu Nov 23, 2017 11:17 pm 
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There is more than one seller of 42 dia on ebay. One is considerably cheaper than the other.


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PostPosted: Fri Nov 24, 2017 12:30 am 
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42.0 is original size for formichino and scoiatollo.


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PostPosted: Sun Nov 26, 2017 4:27 pm 
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Hi,

At the end I didn't use the "MOTIP Bitumen undercoating protection"can that I showed here several days ago. Rudolf advised me not to use it because it is not possible to apply paint over it, so I used another product recommended also by him. That product will allow me to apply the final color on top of it.

It came in spray can, so I got 5 of them on Ebay Germany, they arrived very far by the way. In case somebody is interested, here the link: http://www.ebay.de/itm/332411419032

Attachment:
Presto_Undercoating-protection-spray-can-x5.jpg
Presto_Undercoating-protection-spray-can-x5.jpg [ 125.89 KiB | Viewed 1385 times ]


Thanks Rudolf for let me know the areas where I should not apply this product on. I think the photos below can be very useful in the future if somebody have to do the same job, here you can the areas where I have cover with blue tape, before applying the undercoating protection.

Attachment:
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-06.jpg
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-06.jpg [ 64.87 KiB | Viewed 1385 times ]

Attachment:
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-07.jpg
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-07.jpg [ 64.21 KiB | Viewed 1385 times ]

Attachment:
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-08.jpg
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-08.jpg [ 105.96 KiB | Viewed 1385 times ]

Attachment:
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-09.jpg
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-09.jpg [ 85.89 KiB | Viewed 1385 times ]

Attachment:
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-10.jpg
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-10.jpg [ 67.48 KiB | Viewed 1385 times ]

Attachment:
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-11.jpg
Moto-Rumi-Scoiattolo-body-before-apply-undercoating-layer-11.jpg [ 101.72 KiB | Viewed 1385 times ]


Before it dries I have remove the blue tape at those areas where the undercoating protection should not be applied. I think is better doing that while it was still wet, otherwise it was probably going to be quite difficult to remove.

Attachment:
Moto-Rumi-Scoiattolo-body-AFTER-apply-undercoating-layer-12.jpg
Moto-Rumi-Scoiattolo-body-AFTER-apply-undercoating-layer-12.jpg [ 64.89 KiB | Viewed 1385 times ]

Attachment:
Moto-Rumi-Scoiattolo-body-AFTER-apply-undercoating-layer-13.jpg
Moto-Rumi-Scoiattolo-body-AFTER-apply-undercoating-layer-13.jpg [ 53.61 KiB | Viewed 1385 times ]

Attachment:
Moto-Rumi-Scoiattolo-body-AFTER-apply-undercoating-layer-14.jpg
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Attachment:
Moto-Rumi-Scoiattolo-body-AFTER-apply-undercoating-layer-15.jpg
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Attachment:
Moto-Rumi-Scoiattolo-body-AFTER-apply-undercoating-layer-16.jpg
Moto-Rumi-Scoiattolo-body-AFTER-apply-undercoating-layer-16.jpg [ 97.91 KiB | Viewed 1385 times ]

Attachment:
Moto-Rumi-Scoiattolo-body-AFTER-apply-undercoating-layer-17.jpg
Moto-Rumi-Scoiattolo-body-AFTER-apply-undercoating-layer-17.jpg [ 148.17 KiB | Viewed 1385 times ]


Now waiting to fully dry.

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PostPosted: Sun Nov 26, 2017 6:53 pm 
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Orac1000 wrote:
I just noticed there are some Rumi pistons on ebay italia 42.1 dia


John,
Thanks for the tip. I found it on the Italian ebay as you suggested. Had not seen that size before. It seems that all sizes except 42.2 mm are available! The scooter I need it for is from Argentina, so it possible they made that size there. I will probably do what Arthur suggested, get the 42.4 pistons and have the cylinders honed a bit.

Hugo,
Your project is coming along really well!
I have used the type of undercoating that you can paint over on some of my cars. It helps eliminate some of tinny noise from thin metal surfaces. Not a huge difference but it helps. Of course it also helps to protect the paint from stones being kicked up by the tires. I think you will like the result.

Lars


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PostPosted: Sun Nov 26, 2017 11:16 pm 
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I notice that pistons from the Salini company come with the piston rings.
https://www.motoalesatura.it/


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PostPosted: Wed Jan 03, 2018 9:44 pm 
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Thanks Lars for your comment and John (Orac1000) for the link to the piston rings. I already got the piston rings I need for this project, so the search is not needed anymore :)

Here the photos of one more step done on this project.

Attachment:
Moto-Rumi-Scoiattolo-parts-polished-01.jpg
Moto-Rumi-Scoiattolo-parts-polished-01.jpg [ 88.93 KiB | Viewed 823 times ]

Attachment:
Moto-Rumi-Scoiattolo-parts-polished-02.jpg
Moto-Rumi-Scoiattolo-parts-polished-02.jpg [ 83.05 KiB | Viewed 823 times ]


:D

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PostPosted: Wed Jan 03, 2018 10:45 pm 
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They look magnificent.


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PostPosted: Thu Jan 04, 2018 2:17 pm 
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Thank you John.

I just pick up the Kickstarter and the gear levers that I sent to chrome. During the life of this Scoiattolo both levers were using rubber, so the metal is not worn at all. Very happy with it.

Attachment:
Moto-Rumi-Gear-lever.jpg
Moto-Rumi-Gear-lever.jpg [ 38.7 KiB | Viewed 791 times ]

Attachment:
Moto-Rumi-Kickstarter-lever.jpg
Moto-Rumi-Kickstarter-lever.jpg [ 38.23 KiB | Viewed 791 times ]

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PostPosted: Thu Jan 04, 2018 2:30 pm 
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Again, they look great.
The bike will look better than new.

I must get my pedals re-chromed too. Hope they will look as good as that.


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PostPosted: Sat Jan 06, 2018 4:36 pm 
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Hi Rudolf,

The box with the parts you sent me already arrived. Thank you very much!!! :D

Attachment:
Moto-Rumi-Scoiattolo-leg-shields-and-more.jpg
Moto-Rumi-Scoiattolo-leg-shields-and-more.jpg [ 79.86 KiB | Viewed 722 times ]

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