lightened flywheel on an eldo?

[amamet]

im getting my parts together to send off to lindskog for balancing and came across a v11sport 10 spring flywheel setup I had squirreled away.  already has an iron lined big bored kit that I doubt was ever balanced, that's why its going there. im not touring with this bike and I know people like the heavy flywheel for its rideability.  I have a custom set of heads that take 36mm dellortos that mike rich built (these were purchased from Charlie Coles estate). I need to make sure they work with the pistons I have.  mike told me he built those heads with specs from the pistons (which were lost somewhere in charlies basement). just wondering if im losing too much smoothness by not using the heavy flywheel
thx
allen

[lazlokovacs]

I had my loop apart about a month ago with a beatiful HMB lightened flywheel on the shelf

I thought about it for about 15 seconds then remembered just how much I always loved that beautiful torquey locomotive feeling from the loop

I'd keep it stock

[guzzisteve]

Went & traded bikes today at my storage space, been 4mo. 67 V700 started right up, rode it home & swapped EV went back. 67 has a flywheel 30% lighter than a Tonti in it & it's a joy to ride. Spins up nice but plenty torque to putt around. My Cali2 sidecar rig has a heavier V700 flywheel. Needs the extra torque spinning for the 250# chair out in the breeze. I have one in a box that looks like Swiss cheese, weigh's 8# for my LM3 waiting to get finished & money.

[cliffrod]

 I can’t attest to a Loop, but the difference of riding back-to-back on my V7 Sport (stock weight flywheel) and CX100 (significantly lightened flywheel) is very noticeable.  The CX revs and shifts/downshifts more like a Ducati twin than a Guzzi. 

Not planning to change CX back to stock right now, but it doesn’t feel the way I have come to expect a Guzzi to feel.  On a modified sport bike,  it’s not a big deal to me.  but it is a very different experience in terms of character.  not sure I would want to have an Eldo/Ambo to feel like this.

[Huzo]

Just to clear a little something up…
The heavier flywheel dos not increase your torque output, it flattens the delivery. Torque is produced by the con rod pushing down on the crank pin and increasing the rpm, thereby the power.
Power = torque x rpm
The flywheel is a storage unit for energy and that energy is supplied by the spinning up of the crankshaft. So if a flywheel has a certain potential energy @ 4,000 rpm and is increased to 5,000 rpm, the energy it took to spin up that extra 1,000 rpm, is there to be used when you decide to ask it to do work and you can use that energy as you go from 5,000 to 4,000 rpm.

A heavy flywheel does not boost your torque, it just evens out the distribution.

[jhem68]

I have an Eldo (stock motor) with a ram clutch installed and the effect mirrors the reply from guzzisteve.
Whether the other mods you're doing would amplify that effect or whether or not that result would be what you want is for you to decide.
I needed a lighter clutch pull and wasn't sure I would enjoy the change in character, but it turns out that I was very pleased with the results. Around town or in stop and go traffic it is more responsive and still retains all of the good "feel" that these motors produce.

John H