Yamaha Vino's Stealthy Build

[Zino]

Apr 24, 2021 18:08:44 GMT -5 Kenho21 said:

What speed are you seeing at 9500rpm?

My guess is 50-52 I will have to gps it to be sure but it was past where I hit 49 mph 

[Kenho21]

Apr 24, 2021 21:21:59 GMT -5 Zino said:

Apr 24, 2021 18:08:44 GMT -5 Kenho21 said:

What speed are you seeing at 9500rpm?

My guess is 50-52 I will have to gps it to be sure but it was past where I hit 49 mph 

Not bad at all. Good work Zino.

[Zino]

These Vino's are as far as I am going to take them .
They are Solid runners Quick off the line and peak out at 50 mph.
I looked at putting gears in them to add another 10 mph but the brakes and suspension and Tiny Tires would be way over there head .

So a quick update .
Malossi cast iron 70cc kit .paired with a malossi wild lion pipe which also goes by the name gianelli go or polini speed.
Has a really wide power band that start low and ends -the 9100-9300 rpms so very crank friendly.

Cvt
I used polini green springs in the stock clutch these are medium strength Clutch engages above 5000 rpms
I use the Malossi Variator with 6.5 gram slider weights or 6 gram slider weights .
I shift at about 8000 rpms .

Suspension and Tires
I added some michelin s1's and upgraded the rear shock.
They helped a little with the bumps and handling.

Carb
Stock Carb Mikuni 70 jet needle raised lowered one clip rich.

I run a temp gauge on both vinos they peak out in 320s to 300s on the long 5-6 mile runs .

So for a little over 500 bucks per scoot I went from 30 to 50 .
If i would have just went only did the pipe or the kit with the rest of the parts I would have hit low 40s and I would be around 350 bucks .

So This is what I would call a mild street build extremely reliable .

[Zino]

Now on my Zuma
I have went into the upper Sport Area leaning into Mid race.
I am always Tweaking it to get more speed and constantly upgrading parts .

I can pop wheelies with just a light tug .
My neighbors can hear me coming from a mile away When I am revving it up .

With my current set up I have hit 57-59 mph at just over 10k rpms .
Dellorto 19mm ,Athena Sport Single Ring Polini Head for extra compression and tighter squish ,Yasuni R , Budget Overrange (Malossi Variator Delta clutch Top performance Torque Driver polini bws 100 belt),14/42 gears to give me 11 to 1 ratio.

I have to watch jetting closer I dance alot closer to 350 degrees on wide open runs I run summer Jets and winter jets .
The Athena Kit needs to have the ring replaced more often then I like .

Just a lot more time and money keeping it in a safer higher performance tune .

I get more Miles per Hour then Miles to Gallon and I am always wanting more .

[Kenho21]

Hey Zino, care to elaborate a bit on your Delta clutch setup?

I’m running the delta on my Zuma now and could use some help. I mixed up my weights that came with the performance springs…are the performance clutch weights the heavier or lights weights?

What are your clutch settings otherwise?

[Zino]

The performance are lighter so they swing out later .
Lighter weights higher rpms to engage just like the variator weights .

yellow springs stiffest setting race weights
has me engage above 6k rpms

here is a post from my zuma build on how i simplified tuning on the delta

With a normal clutch you typically have different tension springs typically 500-1000 rpms difference in clutch engagement
The Delta Clutch Chart above Gives a Crazy amount of options and can look overwhelming .
6 different springs The delta lets me find 3 extra tension points with each spring .
This lets me set the clutch to engage in the pipes powerband not before and be doggy off the line .
2 different deltas clutch weights with 3 more engagement points for each.
The coolest thing by dialing in the weights that you can make the clutch engage really snappy for popping wheelies.

Here is How to methodically tune it
Clutch Bite
Try for Wheelies Yes Position 1 For weights
No need for Wheelies Position 3 For weights
Not Sure Position 2
Then Treat It like a regular clutch .( I ignored Tension 1 and 2 because they are basically the same)
Start with the lightest spring.
Find the Tension spring in Position 3 that when you roll on the Throttle You Jump off the line ,
Because you are in the power band If you roll for 20 feet then feel the scoot start pushing go up a spring.

This gave me a good initial tune .
Use The Charts as a Guideline that come with the delta
I found that the bottom chart was correct in that red was tighter than yellow But the rpm ranges were not at all close to the chart .
The difference in weights positions was real close to correct 200-300 rpms for each position .
The tensions were real close Pos 1 and 2 100-200 rpms The position 3 is way tighter 1000 rpms plus .

[Kenho21]

That’s all incredibly helpful Zino. Thank you.

Definitely a bit of a learning curve with this thing, but not bad at all. The pain is taking it apart to adjust it every time. Worth it though. Compared to the for race Polini clutch, I prefer the Delta strongly. Even a poorly tuned Delta grabs better than the Polini for me. That Polini for race clutch really is for racing only, in my experience. Forget anything under 7k engagement…

[Kenho21]

Btw, I knew the lighter weights would be the performance weights! I read in a FB post somewhere the opposite, so I put the heavier weights in. I thought the lighter weights would be the performance weights, but since when is my assumption right? Lol

It engages wayy too softly with the stock weights, IMO. It’s nice to have such a wide range of tuneability I suppose.

[Zino]

I had to edit my post above .
I am running race weights .

The delta is so customizable it is a little more work to adjust it.
With the spring tension and the race weights there is alot of overlap with the springs .

for example You can make the yellow at the tightest tension and the lightest weights  overlaps with the red springs rpm ranges.

[Zino]

the delta chart that I reference in above post .

[Kenho21]

You always come through Zino. That graphic is better than the one I’d found. Thanks!

[Zino]

Tire Chnage for My Vino

Michelin S1's you can go up a size in back to 90/90/10 .
It helps smooth out the bumps and they corner way better than stock

Saved 400 Bucks shop Labor by doing them myself.

Left Them out in the Mid Day Sun for 2 hours .

Tried the Zip Tie Method that was a fail .
So Busted out the Tire irons
checked the brakes both front and back are at just under 5mm and spec is 2mm of pad left.

[Zino]

Been riding the Roughhous and habvent really given My Vino some Love.
Took for a quick ride the other day .

Had a slight hesitation on take off and the first quarter throttle that bawahh bawahh sound.
From wide open deceleration could here a slight backfire .
The rest of the throttle felt right .
So most likely pilot jet is gummed up causing a lean transition to needle and a back fire .

Dropped the bowl out and Carb and pulled both jets .
The pilot jet was hard to see light through.
Had to find a bread wire to clean out the pilot jet .
For good measure ran some carb cleaner through both .
Hesitation gone ,No Back Fire .
Went for a 50 mile country ride
Here are carb setting .
Stock carb snorkle in .
64 teikiei
46 pilot 1 1/2 turns out
needle middle clip

Only got about a month left in scooter season So gottta get some rides in with my bride .

[sevenninesandtens]

Didn't get to ride my Vino much this season, but I did hit 56mph on it.
I'm still lean in the idle jet and I think rich in the main. RPM's hang a bit but also when I ride and shut it off it won't restart until the temp comes back down to around 175 degrees. Been spending most of my free time getting the Vespa back on the road so I haven't had time to tinker with the Vino.

Glad to see you're still kickin around!

[Zino]

sevinninesandtens 56 mph is smoking fast .

just try 1/4 turn in on the air screw makes a big difference on richening it up .

1 1/2 works good for me under 1 and she is a gurgling mess with the stock pilot .