Louis's Genuine RoughHouse50 upgrades

[Louis Angel]

Well, I got plum sick and tired of remodeling this darn house, so I took a night off from house restoration and decided I was in desperate need of
some " wrench therapy" :-D

As in my sig. , I still own a 2014 Genuine Scooter Company (subsidiary of Vespa as I understand it)
I gave it to my wife when I bought the Will200 Dual Sport, but she has put, now hold on, 1 ONE mile on it since February. So I ride it from time to time to keep the fuel swapped out and battery charged.
I had ordered all those "stage 2" performance goodies back many months ago, http://www.scooterworks.com/performa...8#.VZtIf-9RGP8 and since I am so crunched for space in the new house, one GOOD way to get that big 'ol box out of the way is to PUT THEM ON!!!!! lmao!!!!!

Soooooooo, I laid in the floor and went to work.
Hard to tell in the pictures, but the 70cc sure is a LOT bigger piston than the 49cc !!!!
Tonight I got the old engine apart and new piston, jug, and head installed. Fought with that stupid teeny tiny wrist pin retaining snapring for nearly 20 min!!! UHHHGGGG! Anywhooooo, tomorrow I will remove and rejet the carb, install the exhaust, and tear down the CVT and hopefully by Thursday --weather permitting-- I can ride it to work again. Rode it today and remembered why I love the little scooters so much.
LOVE my big Yamaha V-Star cruiser, but the little scooters just work so darn well zipping around town! In bone stock form I have no problems keeping up with the in town traffic going to work. There is one, and only one section of the drive in to work that gives me trouble. A very very long 40 MPH 4 to 5% uphill section on the way in. 45ish MPH at the bottom, by the time I get to the top I am going MAYBE 30 MPH with umpteen cars behind me pissed off at the little scooter dork!

I HOPE this will fix that problem!!! For my closed-course competition of course. I would Neeeeeeevvvvvver put it on the road.
:-D

[Weldangrind]

Awesome! Did it jump to a 47mm piston? I ask that, because the horizontal dirt bike / atv motors use a 47mm piston in the 70cc engine.

[Louis Angel]

Hey Weld, it is a 47mm bore. I am not sure if true displacement is 70cc, or 72cc, since the same kit is listed on the scooterworks website in 2 places, yet under 2 part#s ( 1st part # being part od the "stage 2 kit", 2nd part# being just the piston & jug kit alone )
Here is a link to the actual piston kit used in the S2 kit: http://www.scooterworks.com/prima-cy...p#.VZwXvGfbKpo

Also I changed the bottom picture in my original post showing the "right now" scooter as it sat this morning.

[Weldangrind]

Originally Posted by Louis Angel

Hey Weld, it is a 47mm bore. I am not sure if true displacement is 70cc, or 72cc

Your new displacement is 68cc, vs. 49cc with the old setup.

[Louis Angel]

Originally Posted by Weldangrind

Your new displacement is 68cc, vs. 49cc with the old setup.

Advertisements are sometimes (often) misleading and iffy.
Math never lies!
Thanks for the computation!

[Weldangrind]

Originally Posted by Louis Angel

Advertisements are sometimes (often) misleading and iffy.
Math never lies!
Thanks for the computation!

Even the major manufacturers round up; it's very common and acceptable. It's only the rare company (like Ducati) that will post actual displacements, like 821, 848 or 899. You gotta admit, it doesn't exactly roll off the tongue.

[Weldangrind]

Are you installing the original exhaust? What was the diameter of the original piston? Do you know the stroke?

[Louis Angel]

Originally Posted by Weldangrind

Are you installing the original exhaust? What was the diameter of the original piston? Do you know the stroke?

As seen below, I installed the Prima pipe that came in the Stg2 kit.
I left off the rear fender & brackets on purpose.
The Prima pipe has a really great sound to it. Not too loud at all, but can definitely tell it has been modded well beyond stock. Some of this may be coming from the larger displacement as well.

Original bore & stroke an all 50cc PGO / Genuine 2 stroke engines
is 40mm x 39.2mm

************************************************** ********

Got the scoot back together today. Instantly noticeable power boost.
Still slower from everywhere from 0-Top end than a Honda PCX150.
That part really did surprise me because the RoughHouse is so much lighter, AND is a 2 stroke. :-/ Oh well.
I am not satisfied with the roller weight & contra spring set up.
It was faster 0-20 in bone stock form!!!
BUT, 21MPH & beyond it did better. A LOT better on the top end!
However, there is this, , , , , , , , lag, , , for the lack of a better term, from 35 to 45 MPH. It is like this:
0-20 "come on! Come ON!"
21-35 MPH " Oh WOW! Holly Crap! "
36-45 MPH "Where the CRAP did my power just go!!!!????!!!!!"
45 to whatever the heck I was doing (see pic below) "Oh wow, it is still speeding up! Weeeeeeeee!!!!!!!!!!!!! I am a scooter dork!!!! " LMAO!
Sorry guys, if you willingly CHOSE to ride a scooter, you are a DORK!
And I am a dork right there with you grinning all the way!

Hell, not like anyone really cares what you ride. Seriously. Who can you say truly CARES that you ride a scooter? No one.
Had a guy in a 6.2L (gas) F150 tell me at the gas pump he was getting 13MPG. I said I am getting 98. He then replied "Yeah, but only dorks or dudes with too many DUI's ride scooters!" I then showed him pictures of my V-Star, my S-Class Mercedes, my wifes Volvo, and just grinned and said "Yes sir, my name is Louis, and I am a scooter dork"
The MOST I squeezed in was $1.72, as I fired the little 50 (at the time) up and drove away, his pump was at $71 & change and still going! 0_0
* shakes head *

In the pic below of the speedometer, at the tip of my finger is where the needle stopped at tonight on my break in run. Not sure how fast it was, or how far off the speedometer is, but on 10" wobbly wheels, it was damn fast!
I ordered a Trail Tec Vapor speedo & tach, shipped UPS Next Day Air, and will try to install it tomorrow so I can get accurate RPM and TRUE speed readings. In bone stock but de-restricted form, it would just barely touch the 50MPH mark. So I will know, and report, how fast it was actually going at that mark (stock speed) and what the new true top out speed is.
Now, I am not saying that whatever speed it is, that it is all it can do.
I strongly feel with more tweaking and --maybe-- going even larger on the main jet, more speed could be found. I went from a 75 stock to a 95 that was provided in the kit. Time will tell.

In picture 2, I have the CVT cover was left off, and will remain off, during the next few weeks (or months) till I get tired of swapping stuff around on the CVT and feel that whatever combination I end up with is ideal. One would THINK what was provided in the Stage2 kit would be perfect.
Mmmmmmmmm. Maybe if you lived in flat Kansas maybe. lol

Picture 3 is of the Prima exhaust and deleted rear fender. I also removed the rear luggage rack since it is just adding weight and is never used.

OH!!!! And I almost forgot, I ordered a 3-In-One rear LED tail/stop/turn light assembly to go on the rear to further streamline the tail end. I have 3 different windscreens I can put on it, just got to play around and see what looks the best.

Ya know, I am kinda enjoying this.

[Adjuster]

Very cool. Does it have the GY6 style engine?


/

[Louis Angel]

Originally Posted by Adjuster

Very cool. Does it have the GY6 style engine?

/

Nope. Nothing alike at all.

The GY6 is a 4-stroke.

The RoughHouse50 uses the 50cc 2-stroke PGO engine.
Transmission parts are much alike though.

And thanks. )

[Weldangrind]

Awesome read! I'm definitely a scooter dork, but only from afar right now. I'm currently working on a similar two-stroke for a friend, but there's no big-bore kit in its future.

Is the carb the CV type? Do you think there's a reed valve from Boyesen that might fit?

[Louis Angel]

Originally Posted by Weldangrind

.............Is the carb the CV type? Do you think there's a reed valve from Boyesen that might fit?

Not a clue. Oh either question. Sorry, I am still in the learning
phase on these Genuine scooters.

[Weldangrind]

Originally Posted by Louis Angel

Not a clue. Oh either question. Sorry, I am still in the learning
phase on these Genuine scooters.

A CV carb has a hat on top with four screws, and there is a vacuum actuated diaphragm underneath. If you don't have a CV, then you likely have a round slide carb, with a 1:1 pull as you twist the throttle.

If you can figure out the closest big name engine to your two-stroke, you might be able to find a Boyesen reed valve that would bolt in. I recommend that you research them.
http://www.boyesen.com/

[Weldangrind]

I would think that an exposed variator would only run cooler. If you have a round slide carb, you might be able to move the clip on the needle. Perhaps even with a CV slide. That might help improve the mid-range stumble.

[Louis Angel]

this is the carb that is on mine, WITHOUT the adjustable oil mix screw.

http://www.scooterworks.com/genuine-...3#.VaA7FGfbKpo

I been adding just a wee bit (about 2 oz. / gal. ) of 2 stroke oil directly into my fuel tank since changing over to the 68cc big(er) bore motor. Still not blowing blue smoke (a good thing) but puffing just a bit off idle (still a good thing) Extra oil, I am guessing, is a good thing up to the point it starts to noticeably smoke. I don't know what the factory correct mix ratio is, but in 275 miles, I have yet to refill the factory oil tank and there is still 1/4 to 1/3 a tank of oil in the oil tank. Seems to me that both my old Honda Express50 and my Yamaha Razz used about 1 tank of oil to every 2 tanks of gas, IIRC. I am quite certain EPA has something to do with that. Our old Husqvarna 268 saw ran 32:1, the new 460 Rancher says run 50:1mix. Why? EPA. That's why. So I borrowed the mechanics carb adjusting tool ( special dealer only funky looking splined shaft nut-driver ) and tuned the 576 to run on the old 32:1 mix. Smokes a bit when cold, but once warmed up it is a cutting little fool! With no adverse effects on spark plug life that I can tell. ----sorry, I know that went wayyyyyyy off topic there -----