MOPED ARMY

I don't know my top speed yet, still breaking it in.

Before the kit, 32 mph was about as high as the speedo would go,

maybe 35 down a slight hill, but that's it. On the small street I live

on, I could get it up to about 25 before running out of pavement.

Now I can get up to 30 about 2/3 of the way down the street.

I have had it up to about 40-45, and there is still some room to

go on the throttle. It feels like I should be able to hit the low to

mid 50's, a small twist of gas at 40+ tells me that it's willing

to give me a little more effort. I'm babying it for now till I get at

least 100 miles on the new motor. The bike only has 110 miles

on it.

I put in the 70cc kit, Amal carb, BiTurbo, and 27 tooth sprocket.

Lucky for me I live just a short ride from themopedjunkyard

I've mixed a little extra oil in the gas, so I know that's knocking

my power down a little. I adjusted the carb by turning out the

idle screw while turning in the mixture, till I got a smooth run

while sipping the gas. I have no idea if this is a good or bad way

to do it. The spark plug was still to new to tell if it is burning hot

enough, but I would rather burn out hot burning plugs every month

than have a cold one that lasts forever. :-)

Any hints would be very appreciated.

Like I said, the ped is my new toy, I got it specifically so that I can play with it and the 70cc kit. I've always wanted to get a ped or a scooter (ped prefferably).

Knowing that I was going to put the kit on and that it might ruin the engine ( you see I do pay attention to the posts here ), it seemed silly to go through the time

to break the original engine in, only to have to do the same with the upgrade.

Plus, I would rather break the whole thing in at once, rather than having the trans "used" to the smaller engine, and then adding the newer one.

After riding the ped for a little while, I decided that I really wanted to get more into this, and got out of my last project (anybody want to buy a 54 Chrysler). I can buy

a new motor for the Tomos for what some "parts" cost on the car.

The ped isn't going to see a whole lot of use either, mostly my wife using it to drive a couple of miles to and from work on nice days, and then whatever abuse I can squeeze in on the weekends. Now that she has gotten used to the bike though, I probably will be buying another soon, and just changing the carb and adding a biturbo.

I tried the 27 tooth before I put the kit in and it gave me about 4mph on the top end, letting me get comfortably to 35, but no faster. It's worth the 27 bucks and 15 minutes it took to put in place.

Fred,

You have me going on this one. What color plug would tell me to go hotter/colder?

Ron

Well like I said... I almost certainly would not go to a hotter plug after modifying it.

And if it was modified radically it would get a cooler plug for sure.

But it's like jetting... If it was white I would go with richer jetting or cooler plug.

Or dark brown...leaner jetting or hotter plug.

I would stick with the stock heat range plug and jet it to suit.

I thought you were going to Daytona Ron?

Thanx, that's about what I've seen in playing with the screws.

I think I've probably got it right, now if I could just get this BiTurbo hooked up

right, I'd be all set. It sat a little low, so I tried to pursuade the pipe into place

and hope that when it heated up it might take on the appropriate shape.

But then my pipe didn't meet the engine right, and I was spewing a fine oily mist

out the engine. No problem, just need to make sure I have the bolts down

tight... oops, there goes the stud, snapped in half.

Has anyone else had problems with the 2 piece biturbo where you can not get the

nut on the stud because it's too close to the pipe. I had to cut the edge off a

deep 10cm socket to get it on the nut, and have room to turn.

I'm unfamiliar with what you are talking about ( see, I told you carb settings were new to me :-) so I would have to say no.

The only settings I have touched are the set back screw where the cable comes

into the carb (to make sure it was not too loose or too tight), and the idle and mixture screws. I've set the idle down to where the bike is running nice and quiet, even with the BiTurbo. Next I turned the mixture screw one way till it started idling worse, then I turned it back the other way till it started idling worse. Then I twisted it back to the middle position where it was running the best, and re-adjusted the idle to get it back to quiet.

Ray,

It sounds like you did it exactly right.

For a good explaination of how to read spark plugs and heat range selection, go to

http://www.ngksparkplugs.com/

you should find everything you need here,

Ron