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 Post subject: New Timing Belts and tensioning
PostPosted: Sat Jan 07, 2017 9:35 pm 
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Joined: Sun Oct 30, 2016 9:05 pm
Posts: 37
Location: UK
model: 907 I.E.
year: 1993
Recommendations please for supplier of good quality timing belts. Also, do they have a date stamp either on the packaging or belts themselves? There are a number of posts on this and other forums comparing prices and quality of belts from Ducati, Gates, Dayco, Flennor etc. Gates make most if not all belts for Ducati but apparently a Gates belt is a different construction to a Ducati belt made by Gates for Ducati???

73740021A is the original part number, also for the ST2 etc. but has this been superseded? Belt tensioning is covered elsewhere but it would be good to know peoples preferences for:
1. 5mm Allen key method
2. Spring balance method 10Lb ?
3. Frequency method - 110Hz ?

Thanks for any help or advice...

Also looking for a supplier of the M1R fork seals

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RB

1980 LAVERDA JOTA
1982 HESKETH V1000
1985 LAVERDA SFC 1000
1993 DUCATI 907IE for riding
1993 DUCATI 907IE for fixing
1995 TRIUMPH DAYTONA SUPER III


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 Post subject: Re: New Timing Belts and tensioning
PostPosted: Sat Jan 07, 2017 9:57 pm 
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Joined: Sun Feb 09, 2014 8:24 pm
Posts: 9
Location: Netherlands
model: 907 I.E.
year: 1992
Hi there,

I don't have a lot of info on the belt apart from me preferring the frequency method as I believe it's most accurate.

With regards to the M1R seals (and other parts in the forks like bushes and dustcovers), they are the same as BMW K100 (16V) and K1100 parts. All numbers you need are in this post viewtopic.php?f=3&t=3889

Cheers,
Bas

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 Post subject: Re: New Timing Belts and tensioning
PostPosted: Sat Jan 07, 2017 10:27 pm 
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paso grand pooh-bah
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Joined: Sun Jul 18, 2004 12:00 am
Posts: 5014
Location: southern Germany
model: 750 Paso
year: 1987
Fork seals are Ariete ARI.083.

The 5mm allen key method is often used and mentioned in different forums but noone can actually tell its origin. Imho it`s from the 4V guys as it results in a much higher tension. If you`d want to end up with ca 110Hz it would be the '8mm allen key method'. However the frequency method is simple and precise. The spring balance method will only work if the engine is out of the frame as there`s no way to use that on the rear cylinder.
The new belt number is 73710081A before it was 73740021A and 73710011A.

If the belts are replaced on regular basis I doubt you`ll notice any difference in quality.


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 Post subject: Re: New Timing Belts and tensioning
PostPosted: Sat Jan 07, 2017 10:40 pm 
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Joined: Sun Oct 30, 2016 9:05 pm
Posts: 37
Location: UK
model: 907 I.E.
year: 1993
paso750 wrote:
Fork seals are Ariete ARI.083.

The 5mm allen key method is often used and mentioned in different forums but noone can actually tell its origin. Imho it`s from the 4V guys as it results in a much higher tension. If you`d want to end up with ca 110Hz it would be the '8mm allen key method'. However the frequency method is simple and precise. The spring balance method will only work if the engine is out of the frame as there`s no way to use that on the rear cylinder.
The new belt number is 73710081A before it was 73740021A and 73710011A.

If the belts are replaced on regular basis I doubt you`ll notice any difference in quality.


Many thanks. The belts were last replaced for the previous owner in 2010 at 1,997 miles. It has done 2 miles since then!

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RB

1980 LAVERDA JOTA
1982 HESKETH V1000
1985 LAVERDA SFC 1000
1993 DUCATI 907IE for riding
1993 DUCATI 907IE for fixing
1995 TRIUMPH DAYTONA SUPER III


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 Post subject: Re: New Timing Belts and tensioning
PostPosted: Sun Jan 08, 2017 5:53 pm 
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Joined: Sun Aug 14, 2016 11:06 pm
Posts: 28
Location: USA
model: 907 I.E.
year: 1992
I just replaced mine with Dayco....used the 5 mm allen method...seemed to work fine....I think I was over thinking before I dove in......
I took off Ducati belts, no idea how old they were...looked well used....no cracks or unusual wear in the teeth,or anywhere else...
Only took a couple hours or so....well worth the insurance in my opinion......

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 Post subject: Re: New Timing Belts and tensioning
PostPosted: Sun Jan 08, 2017 6:44 pm 
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paso grand pooh-bah
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Joined: Tue Jul 29, 2008 9:50 pm
Posts: 3152
Location: Hilltown,Pennsylvania
model: 906 Paso
year: 1990
5mm works just fine, Hz is no more accurate. Both require the same care in checking and putting the slack in the correct position, Hz just cost you more bucks. It aint no piano, jeez

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 Post subject: Re: New Timing Belts and tensioning
PostPosted: Sun Jan 08, 2017 11:42 pm 
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paso grand pooh-bah
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Joined: Sun Jul 18, 2004 12:00 am
Posts: 5014
Location: southern Germany
model: 750 Paso
year: 1987
it`s a lot more accurate (if you`re using a proper microphone). Of course the 5mm allen key method works as will a higher or lower belt tension. It`s a bit like tire pressure.
However the 'we`ve always done it this way and it works' doesn`t change the fact that if you`d want to respect Ducatis belt tension specs the tension resulting from the 5mm allen key method is too high.


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 Post subject: Re: New Timing Belts and tensioning
PostPosted: Tue Jan 17, 2017 5:37 pm 
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Joined: Mon Dec 15, 2014 11:05 am
Posts: 92
Location: Sleepy leafy South Birmingham UK
model: 750 Paso
year: 1987
. .

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Last edited by MarkST on Sun Jan 22, 2017 11:21 am, edited 1 time in total.

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 Post subject: Re: New Timing Belts and tensioning
PostPosted: Tue Jan 17, 2017 7:52 pm 
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paso grand pooh-bah
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Joined: Thu Nov 03, 2011 10:13 am
Posts: 505
Location: Scotland
model: 907 I.E.
year: 1994
For tensioning belts I use Gates Carbon Drive app on my phone http://www.gatescarbondrive.com/products/tools

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 Post subject: Re: New Timing Belts and tensioning
PostPosted: Tue Jan 17, 2017 9:09 pm 
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Joined: Sun Oct 30, 2016 9:05 pm
Posts: 37
Location: UK
model: 907 I.E.
year: 1993
Derek wrote:
For tensioning belts I use Gates Carbon Drive app on my phone http://www.gatescarbondrive.com/products/tools


Good for IPHONE and ANDROID. Not Windows Phone...

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RB

1980 LAVERDA JOTA
1982 HESKETH V1000
1985 LAVERDA SFC 1000
1993 DUCATI 907IE for riding
1993 DUCATI 907IE for fixing
1995 TRIUMPH DAYTONA SUPER III


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 Post subject: Re: New Timing Belts and tensioning
PostPosted: Wed Jan 18, 2017 9:12 am 
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paso grand pooh-bah
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Joined: Thu Nov 03, 2011 10:13 am
Posts: 505
Location: Scotland
model: 907 I.E.
year: 1994
arp489j wrote:
Derek wrote:
For tensioning belts I use Gates Carbon Drive app on my phone http://www.gatescarbondrive.com/products/tools


Good for IPHONE and ANDROID. Not Windows Phone...

But who would want a Windows phone? :lol: ;)

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2015 Scrambler Classic
1982 Pantah 500SL


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 Post subject: Re: New Timing Belts and tensioning
PostPosted: Wed Jan 18, 2017 2:00 pm 
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Joined: Sun Oct 30, 2016 9:05 pm
Posts: 37
Location: UK
model: 907 I.E.
year: 1993
Derek wrote:
arp489j wrote:
Derek wrote:
For tensioning belts I use Gates Carbon Drive app on my phone http://www.gatescarbondrive.com/products/tools


Good for IPHONE and ANDROID. Not Windows Phone...

But who would want a Windows phone? :lol: ;)


:) :) :) It was a big mistake and only because I "upgraded" from my trusty 6310i just last year! Now that was a brilliant phone and still is. Also not much use for cam belt tensioning though...

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RB

1980 LAVERDA JOTA
1982 HESKETH V1000
1985 LAVERDA SFC 1000
1993 DUCATI 907IE for riding
1993 DUCATI 907IE for fixing
1995 TRIUMPH DAYTONA SUPER III


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 Post subject: Re: New Timing Belts and tensioning
PostPosted: Wed Jan 18, 2017 3:15 pm 
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Joined: Mon Dec 15, 2014 11:05 am
Posts: 92
Location: Sleepy leafy South Birmingham UK
model: 750 Paso
year: 1987
. .

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2001 ST4
1987 Paso 750


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 Post subject: Re: New Timing Belts and tensioning
PostPosted: Mon Jan 23, 2017 11:48 am 
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Joined: Mon Jun 10, 2013 6:22 pm
Posts: 5
Location: west sussex , UK
model: 907 I.E.
year: 1994
I was told by an " expert " that it also depends on the garage/workshop temperature ! so in the cold weather/workshop temp. is lower I use the 8mm gauge as the engine would be less expanded than in the warm weather [ UK !! ] when I use the 5mm gauge , as others have said it has worked for me 20 yrs.


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 Post subject: Re: New Timing Belts and tensioning
PostPosted: Fri Jan 27, 2017 8:35 am 
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Joined: Wed Aug 28, 2013 12:34 am
Posts: 2
Location: New Zealand
model: 750 Sport
year: 1989
For belt tensioning I have used a similar (free) application from ContiTech called Tension2Go: https://play.google.com/store/apps/deta ... n2Go&hl=en

Verified the accuracy using a calibrated SKF tuning fork, and recorded the exact Hz using a Galaxy S2...

Cheers,


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