Honda Spree and Elite 50 Forums

I have the same af05 as you but have:
polini bbk
keli var with stock ramp
same gears as you
pod filter and I hit 50MPH
This is with a stock pipe.

Thats why I say it must be your filter or too rich or too lean.
Did you buy a roller pack? I'm using lighter rollers than that to.

novs86 wrote:Thats why I say it must be your filter or too rich or too lean.
Did you buy a roller pack? I'm using lighter rollers than that to.

You are probably right.

Well, after what i am guessing might have been a softer seize and hitting a crazy pot hole a couple of issues:

1. Compression seems higher. tested at 205 psi, then 185 psi cold. It seems the colder the temps outside, the high the compression. This seems weird after have a seize of sorts, but what do you think?

2. at higher revs - 5-6-7k there is a violent shake that begins to occur. It is like the bike is having a seizure.

So, because of this I did what anyone would do - started to take the whole thing apart and began to clean...everything. Going to check the cylinder for scars, clean the carb, get a new rim. The fun never stops.

Greetings:

Quoth Mr. Pibbs:

2. at higher revs - 5-6-7k there is a violent shake that begins to occur. It is like the bike is having a seizure.

That sure sounds like a mechanical, rather than a mixture issue that will respond to cleaning. Try crumbling a Dilantin tablet and put it in the tank first.

If that doesn't work, my first suspicion would be an off-center alternator flywheel. Next would be a dislocated roller in the variator, or some issue with that side. My dread would be a wobbly crankshaft. In any case, some dismantling seems indicated.

That compression does sound awfully high. Can you check it with another gauge? Flash II's starter struggled to spin over the cold engine with compression around 175. That said, rings can "bed in" and compression goes up once the break-in process occurs.

So the Mad Max took a right turn and I am dropping in a Kymco ZX50 engine. Larger 12inch rear tire will be nice and will proabably hop up to 35 pretty quick with a frame 50 lbs lighter.
Here are some photos. Almost got it sorted.

Old engine on the right, new on the left


New kick stand


Larger hanger


Some clearence problems with some of the plastics, including the rear flap. Had to do a little hammering and cutting and spacing.




bigger shock


This is a picture of the close clearence of the shock. Had to remount from this point - there is a little more space now.


In the frame:(note the rear mud flap resting on the rear tire)




Needed to use the tub from the zx because of clearence issues.  This created problems with the rear rack.  Solution below.










Thats it so far.

Greetings:

That is wonderful work, Sir Pibbs. Right out there on the ragged edge of weird modding, but you worked with whatcha got, and you gotta respect that. Are you online with any Kymco 50 enthusiast groups? I'm not aware if anyone has made gears for the ZX, but the fiche shows everything different from the swingarm base back. Probably to clear that big 12" rear hoop...

Other than gears, inside and up-front, it looks to me like everything that fits a Dio will work on the Kymco too? Bore kits, pipes (not sure about the muffler mount locations...) reeds and carbs? Are you planning a Honda Elite pulley conversion??

Now I must add one criticism. How can you live another day with that dingy, dusty belt cover?? Probably full of scratches, too. Wouldn't your life improve dramatically if you had a shiny-black, brand-new, never-installed one?
Just kidding. My Kymco dealer looks like he's agreed to send my Misadventure-K-Cover back, since I'm ordering some kickstarter hardware. (Not a done-deal yet, however.)

Wheelman-111 wrote:Greetings:
Now I must add one criticism. How can you live another day with that dingy, dusty belt cover?? Probably full of scratches, too. Wouldn't your life improve dramatically if you had a shiny-black, brand-new, never-installed one?

Yes, i thought of this when i read your post....

As for gears, i'm not sure it will be an issue. I have been looking around about it and it seems that after i derestrict the variator and maybe add a "performance" vari in there with the limit-less cdi it could touch the top 40s. I have hear varying reports and i am not sure what the final reduction is, but 12 inch rear rip can't but help the top end.

We'll see. If you have any extra boss's around that are longer, i'll take those...

http://www.mhr-usa.com/racing/transmissions-parts.html
they show ZX-50 parts but i dont know how to order. they also have the 7.5 gram rollers i want. guess you just have to call them.

odinxxix wrote:http://www.mhr-usa.com/racing/transmissions-parts.html
they show ZX-50 parts but i dont know how to order. they also have the 7.5 gram rollers i want. guess you just have to call them.

Good find. There are folks around with some fast ones so i might have to do some more research and see whats up.

Right now I can't seem to get her to idle without leaving my fingers on as a manual choke. Stock airbox kills engine as well - too stuffed up? currently I am seeking a new element. Open to thoughts.

Got her running, Jumps to 25/30 then crawls to 35ish at not quite 7k. Feels like a rev limit, though i know it's not. Still need to take the tranny apart and see whats in there.
Some pictures:




yes, that is my Elite carb on there.


here is a shot of the spacing I had to do to keep the rear tail from dragging

Mr Pibb
Be careful of running your bike without an airbox unless know you have enough jetting. Too lean can get things too hot, might even ventilate your piston.

I like the idea of a 12" wheel.

elitedio wrote:Mr Pibb
Be careful of running your bike without an airbox unless know you have enough jetting. Too lean can get things too hot, might even ventilate your piston.

I like the idea of a 12" wheel.

I hear you ed. Right now it is running a 95 (the other jet that came off was a 90, and the repair man calls for an 80?) I don't plan on running it without a airbox/filter, but am still trying to figure out the best thing to do.

Stock air element is trashed, but i like the noise reduction of the air box, even if it has some holes in it. A pod would be easier, might be the way I go.

What are the benefits of going with that engine?

Just curious since I'm not familar with it?

novs86 wrote:What are the benefits of going with that engine?

Just curious since I'm not familar with it?

12" rear rim. That and I had one. It is very similar to the dio's capabilities. Without bore/gears and the like you can do mid to upper forties.

Restriction came in two forms:
1. Boss restriction of variator
2. CDI rev limiter ( already over this one as I currently use the elite cdi)

I'll keep documenting what happens. Really I felt like i had hit a wall with the af05e that needs a new case bearing and exhaust. This opportunity came up and It should be fun to see what it can do.

Whats up with the carb that the Kymco came with Pibbs?

Is it the same size as your Elite one you have on there?

bradthreee wrote:Whats up with the carb that the Kymco came with Pibbs?

Is it the same size as your Elite one you have on there?

Yes, it is a clone. Same slow jet, same size, etc. The kymco is in need of a crazy cleaning and the elite carb was already clean so i threw it on there.