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Bornagain 12-Jan-2011 00:44

Dayco Cambelts
 
Dayco seem to have a good range of kevlar cambelts for Ducati applications.

http://catalogue.daycoaftermarket.co...ByVehAction.do

Thoughts anyone?

skidlids 12-Jan-2011 18:21

Heard of a few people using them without any problems, but I've been sticking to original Ducati items as supplied by Gates.
I see it the same way as Insurance cover, pay a bit more and get better cover

Shazaam! 12-Jan-2011 20:14

Aftermarket Belts
 
The question about installing aftermarket camshaft belts in a Ducati comes up quite regularly. Ducati belts are made by Gates to Ducati specifications and are unavailable except from Ducati. Further, Ducati specfies belt tension requirements based on using a Gates belt.

But, Ducati belts are quite expensive compared to aftermarket belts.

There have been a number of changes to the Gates belts over the years because Ducati belt failures have occured frequently in the past. Accurate belt tension values and replacement at Ducati’s mileage and time intervals are important to avoid premature failure. Unfortunately, belt failures are still with us.

I think I’d consider buying aftermarket if GiaCaMoto, Bucci, Dayco or California Cycleworks offered their own warranty to cover engine damage caused by their belt failure. Testimonials from one or two owners, or anecdotal information from a reseller that they’re identical to the OEM belts isn’t enough for me. If you want to assume the risk on an out-of-warranty bike for the sake of a few quid, be my guest.

The financial and failure risk is not trivial.

Keep in mind that Ducati engines are interference engines, that is, the valves will come in contact with the pistons if the timing belt fails. So it’s probably wise not to use an aftermarket belt on an engine that’s still under warranty. If one fails, Ducati won’t pay for the repairs.



Aftermarket belts, although dimensionly correct, can exhibit differnces in internal construction and materials. Ducati’s product specification for tensile and fatigue strength, durability, heat resistance, etc. isn’t published, so there will be some differences exhibited between OEM and aftermarket belts.

For example, one aftermarket manufacturer sells a stronger belt that tests show will fail at higher tension force levels than the Gates belt. So is this a better product?

No, as it turns out.

The stronger aftermarket belt is stiffer in tension, so when you install the belt to Ducati’s cold tension specification, when the engine heats-up the hot tension is higher than you get with the Gates belt. Loads on the pulley bearings becomes excessive, noise increases and heat build-up (from flexing a stiffer belt) increases. So a stronger belt could lead to premature failure.

Just saying.

Mad Dog Bianchi 13-Jan-2011 07:03

yeah, but the after market belt is 20 dollars cheaper......LOL
reminds me of the lady who told the captain when alighting from a flight, "Airline So&So gives out free champagne, have bigger meals, and roomier seats". He replied, "so, why did you fly with us?", to which she retorted "Cause you are $3 cheaper!". WalMart mentality at it's finest.


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