Question for the machinist..turning flywheel on lathe TXC 310

There is a difference 50W means WINTER not wt
50WT is 50WT. 50 is 50
So now show me a 50W.

Thanks Kelly, that was a really good read. I was wondering about the age of the article based upon the zinc levels listed, it is 2006. Since then, SARA/EPA has set restrictions on the limits based upon oil viscosity weights per the SM/SN ratings. I have researched MSDS on "S" brand and they too comply, even in their "off road" formula. I would of loved to of seen M1 0W40 in those tests.

As far as earlier comments go on 50 weight oils, I'll try to explain.
Based upon whether or not we are discussing synthetic or conventional oils, produces the primary basis on which actual oil weights in which we use. Since conventional is based upon the lower number in a 20W50 rating, the base weight is grade 20. However, in synthetic, and this is mainly which we discuss, the base weight is grade 50. This is because synthetic uses polymers which thin the oil instead of utilizing viscosity improvers such as VI which artificially help to raise viscosity at elevated temperatures. When the synthetic additive breakdown occurs, we are left with the ----> 50 weight and not the 20<------. So when adding synthetic 20 winter 50 to our crank case, we are adding an oil based upon 50 weight oil. What I should of said is that we would be adding an oil based upon 18cst@100°C, but I didn't wish to sound like a robot.

So the difference between using a 50 weight oil and a 40 is the difference between 18cst and 13cst@100°C. In layman's terms, you gain approximately 28% more flow. Some 50 weight oils such as Motorex are as high as 24cst@100°C and in this case, there is 46% greater flow. Better flow, better cooling, longer lasting investment.

The starter gear does use a worm gear. From the pictures, you can see metal deformation near the top of the gear where the soft metal is actually peeled back, not worn. Updated gear sets are supposed to be hardened to stop this from happening. Obviously the thinner oil does allow for greater flow density between the two gears. However, I fear that no matter which oil is used, this will continue to happen until the gears have reached the ability to handle the load pressure.

I remember Bill working on a set of upgraded gears to solve this issue. If for some reason this isn't worked out between Husqvarna and it's customer base in the future, we will look into resolving this issue once and for all.

..I have had doubts if these were the "updated" gear set as was I informed by the dealer . I would like to look into this "warranty replacement" by the dealer. Is there a way to see if an actual claim was made on these bikes? I know when I was a dealer several years ago,I would file a factory warranty claim and sometimes I would have to hold onto the parts for a month maybe even longer or would have to submit the part with the claim.Whatever the case ,I would have a copy of the claim on file or I could contact Husqvarna (Cagiva USA) and get a copy. If the dealer is not making good on this issue and is making false claims ,I don't know...I just want to serve my customers with the correct solution and resolve this a.s.a.p.. Now it's unfortunate these kits are on factory back order

..That's "one" of the reasons several shops have set their bikes up with a slighter tighter valve adjustment on the decomp side valve- to aid in compression relief for the electric starter -also helping with the kicker as well.

Ive had the same problem, having had the 'revised' gearing fitted after a failure on my 1st race 3 days after i bought it has lasted 10 weeks then the same has happened.

My decomp valve was set at 009/.227 so i have re-shimmed to 007/.18 as the next size down too small i.e 005/.127.

Im fitting the new gears tonight and hope it will last this time, i have also bought some Mobil 1 oil 0w40, removed the thermostat and housing and bought this oil additive similar to that recommended. Im awaiting a SS oil filter also!

http://www.ebay.co.uk/itm/221372857009?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

Hopefully this will sort it!

Removed gearing; Unable to add pic dont know why but looks the same as above, gnarled after 10 hours