Cam Belt Size

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snatchpiece
Posts: 37
Joined: 20 Oct 2009 19:00
Location: South West Lincs

Cam Belt Size

Post by snatchpiece »

Hi, its time to replace the cam belt on my 500 Strada, I can't for the life of me remember how to determine if I need size A, B or C.
Is there anybody out there that knows ?
Thanks in advance
Mick.
1980 Moto Morini Strada 500
Steve Brown
Posts: 1390
Joined: 12 Nov 2007 23:44
Location: Leicestershire

Re: Cam Belt Size

Post by Steve Brown »

Yes, the camshaft pulley should have the A B C marking stamped on it. All in the manual, easy to do.
All donations to the rest home for old Camels, Leicestershire.
norbert
Posts: 750
Joined: 15 May 2007 15:15
Location: Lübeck/Germany

Re: Cam Belt Size

Post by norbert »

An if there is no letter, it´s a "B"
SupermotoDave
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Location: Reading UK
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Re: Cam Belt Size

Post by SupermotoDave »

And pattern belts are all Bs anyway, unless they’re not.
norbert
Posts: 750
Joined: 15 May 2007 15:15
Location: Lübeck/Germany

Re: Cam Belt Size

Post by norbert »

SupermotoDave wrote:And pattern belts are all Bs anyway, unless they’re not.
:lol: exactly! It´s a kind of loterie but normaly such an industrial belt will do, an costs less than 10€ :wink:

Only the pulleys of the first series motors don´t have a letter A,B or C and have the norm-size B,
EVguru
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Re: Cam Belt Size

Post by EVguru »

SupermotoDave wrote:And pattern belts are all Bs anyway, unless they’re not.
The majority of timing belts will be 'B's since that size sit right in the middle of the production tollerances.
Look up 'Bell curve', 'Normal', or 'Gaussian' distribution
Paul Compton
http://www.morini-mania.co.uk
http://www.youtube.com/user/EVguru
snatchpiece
Posts: 37
Joined: 20 Oct 2009 19:00
Location: South West Lincs

Re: Cam Belt Size

Post by snatchpiece »

Thanks guys, my manual has been returned to me and everything is clear now.
How do you guys prevent the rotor from turning when undoing the nut, do you all have the special tool?
1980 Moto Morini Strada 500
norbert
Posts: 750
Joined: 15 May 2007 15:15
Location: Lübeck/Germany

Re: Cam Belt Size

Post by norbert »

You can make that tool easily yourself. Two pieces of steel or strong alu, three screws and three nuts
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Maybe you have to tune the two srews/bolts that enter in the flywheel (this one is for the newer flywheels). Leave one arm long enough to settle un the footrest :wink:

On the road you can put the 6th gear and juse the rear break.

norbert
rossguzzi
Posts: 433
Joined: 23 Jan 2019 14:21
Location: Perth W/Australia

Re: Cam Belt Size

Post by rossguzzi »

About to fit a new belt to mine too. Are 'Gates' belts good quality ?
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Ming
Posts: 798
Joined: 01 Aug 2014 16:32
Location: France
Location: Central France

Re: Cam Belt Size

Post by Ming »

I think any belt you buy from a Bearing Factor, or on line from a reputable company like RS will be at least as good as an 'original' which was more expensive due to them being measured and graded.
Quite possibly any modern belt will be made from better quality materials, too.
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