Honda Spree and Elite 50 Forums

bakaracer wrote:Put the 48 pilot in and open the screw to 1 7/8. Almost 2 turns. Try that. As for your speed,there must be something else going on. Mark the pulley with a sharpie to see how high the belt is riding.what brand belt are you using?

I finally got that 48.
I believe i got a bit of stronger launch but lost some power up there, takes longer to get full speed. Throttle is still being usable at 50% max. I wanted to check plug color but one of the springs came off the clutch and couldn't ride anymore.
The other day I marked the pulley with the sharpie like you said... and today i took a picture so here it is... belt is riding this high:



And i got all this slack in the belt:

That belt looks kind of old. Edges looked frayed.measure the width with calipers.if its narrower than 14.8mm change it. Do a wot plug chop to see where you are on the main jet. My guess is that its 1 size to big right now since you upped the pilot.

What belt are you using, stock boss or using boss shims?

bakaracer wrote:What belt are you using, stock boss or using boss shims?

I will have to measure it then.. I know it got toasted with too much heat on the first setup attempt.
I am reading that sticky thread about the ZX mod and learning about the transmission deal a little bit.
I am using a kitaco Kevlar but the numbers are gone in it so i have no clue about its size.
I wonder if i got a stock boss or something else because the drive face barely engages the teeth
of the crank. It is one piece, there are no shims.
I have to install the clutch spring anyway so i will take measurements of everything and check with you guys because
a past owner of my scooter played with the transmission before.
Thank you.

measure the boss length in mm.if your using a stock width belt with a zx boss,then that might be why your having trans issues.

Thank you for the constant help and professional tips Baka.. you are da' man

Been away working and no time for the scooter.

I talked to Steve some time ago. He said my shaft is shorter because i have an earlier AF18 model.
This is how the boss stands in there, there are no shims or anything



Measurements:
boss: 35mm
old worn belt seen in the picture: 13.9mm wide
used bando belt that i had lying around currently installed: 14.4mm

So i replaced the kevlar belt for the bando. The bando is wider and shorter. Lost some mid range torque i think with it, but there is less slippage for sure.
I found the rear bearing got some play so time to replace it... sucks.

get yourself a new belt. new is 15.5mm wide. so your used 14.4mm belt is worn too.

Greetings:

I could be mistaken, but my recollection is that the stock SR boss is ~33mm. A Polini-for-Rubkus kit I purchased measured a whopping 37mm and wouldn't work even with my widest belts. Using a 35mm boss on my crank requires the use of a ZX 18mm belt. The Stock belt, even if it measures a true 15.5mm wide, will slip between the front sheaves until the variator actuates. This isn't a good situation, because it'll cause the belt to wear quickly. Unlike vintage snowmobiles, these belts aren't designed to perform as a second "clutch".

When I shim out my 2001 AF16, the exposed splines protrude a bit farther than your picture shows, so perhaps Steve is correct in saying the AF18 crank is different.

I believe a ZX 18mm belt would not come down to even touch the boss if i install the drive face, there is just not enough space.
I will try with the stock 15.5mm then.
Which one do you guys recommend? are there different brands or is it just the Bando belt...what is the part number?
Thanks a lot.