New 20 ounce tumblers available now! Forum donation credit with purchase. https://www.wildguzzi.com/Products/products.htm#Tumbler
Why bother , you've already got the best idea in it now . They last so long you'll never remember when you installed it .Any straight cut gear set will just make noise . Peter
For a street bike the chain is simply the best.
Wrong on both counts thenDucati Desmosedici. Art and engineering meet. Ciao
Wrong on both counts then:) I'll leave the argument about the first statement because it will just go round in circles as it always does but the second statement is worth a comment. I have 2 engines fitted with Joe Caruso steel gears and noise isn't an issue with them, same as it wasn't with the earlier big block Guzzi's that used them standard. Joes are straight cut as well and a casual observer wouldn't be able to pick the gears which was a bit of a disappointment to me actually. Don't mind a little Supercharger like whine from a gear set.As an interesting aside when I fitted the steel gears to my V11 the first thing I needed to do when got back from the first short ride was to turn the idle down 200rpm. Seems there was quite a bit less friction/drag with the gears at idle which I wasn't really expecting to be honest. As I've mentioned before, when cost isn't a consideration the best go with gears.Ducati Desmosedici. Art and engineering meet. Ciao
Truly gorgeous, and exactly the point,Lightweight and straight cut Carcano’s original V7 gears were helically cut and stupid heavyV7 Sport to come may have gears Tonti wanted to use but conservative policy prevailedBut everyone else who won anything didn’t use chain or heavy gears
And a hose clip and lockwire to stop the oil filter loosening.
Many years ago I had a mix of steel and alloy straight cut gears in a Vincent.The teeth on the alloy gear had worn so sharp you could almost cut yourself.
Newbie question - are gear sets available for round fin (G5) engines?
I wonder if Joe puts timing marks on the gears?
The only advantages of timing gears I can see is less friction losses which is only important for race engines. Light alloy gears wear quickly, ojnly steel gears can have a service life comparable to a chain set. The mass of the chain is an important damping element for the uneven behavior of the camshat rotation compared to the crankshaft. When looking at a Guzzi cam, you can see that all lobes are concetrated on one side of the cam. So tha cam wonts to rotate sometimes faster, sometimes slower than the crank. The timing chain together with a good tensioner will be damping out these irregularitys and contributes a lot to a regular engine running behavior. Especially in the lower rpm range. For a street bike the chain is simply the best.
The purpose to move away from gears to chains is that gears require shaft centers to be held to higher tolerances, or suffer with noise and wear issues.typically when i design a gear train, i do not like to use steel on steel, and if i must, I take care to select alloy and heat treat processes to make sure that the larger gear is slightly softer than the smaller gear.Gear Pros: better control of timing over greater speed range, long life. Gear Cons: Manufacturing cost, require "fitting" if block wasn't bored perfect.Chain Pros: lower tolerances required on shaft centers, if things move with heat, a chain wont care much. Chain Cons: require tension device that is typically sacrificial, Less accurate timing control, Wear over time is emanate. Just my 2c
The corporation joked that Chevrolet had enough trouble getting body panels to fit right on initail design let alone getting their blocks machined well enough tofit timing gears.
A good friend & MG guru installed the yclept Caruso gears and pump in my Daytona,~3 years ago. He has had much experience owning 3 Centauro. His generous stack of timing gears, with odd wear characteristics (refreshed with every belt change, iirc), offer a hint to impending doom. Mine were changed @18k miles. Another friends' Centauro blew up @ 27K miles. The engine, in all cases is virtually a total loss. Pre-empting the inevitable is a good thing. R3~
The purpose to move away from gears to chains is that gears require shaft centers to be held to higher tolerances, or suffer with noise and wear
Page created in 0.026 seconds with 23 queries.