Super Dio ZX AF28 and other Dio scooters

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sanjuro
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Re: Super Dio ZX AF28 build (video on page 2)

Post by sanjuro »

bakaracer wrote:put an airbox and down jet for the airbox. Oh and try and not grab a whole lot of throttle when stop and go riding. :smile:
Hehe, guilty as charged. :oops:

I'm going to have to nurse the throttle a bit more these days. :lol:
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Re: Super Dio ZX AF28 build (video on page 2)

Post by sanjuro »

Kind of a crappy middle of the afternoon shot:
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Re: Super Dio ZX AF28 build (video on page 2)

Post by elite_dub »

sanjuro wrote:Kind of a crappy middle of the afternoon shot:
Image

Image
I'll buy that for a $1 :worship: :worship: :worship: :worship: :worship: :worship: :worship: :worship: :worship:
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Re: Super Dio ZX AF28 build (video on page 2)

Post by losthope »

thats a badass looking bike!
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Re: Super Dio ZX AF28 build (video on page 2)

Post by bakaracer »

SSHHHIIITTT! Very nice as always like the rest of your bikes.
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Re: Super Dio ZX AF28 build (video on page 2)

Post by bakaracer »

Hows the bike coming along?got the jetting all good?
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Re: Super Dio ZX AF28 build (video on page 2)

Post by sanjuro »

I put 50 km on it yesterday, and it ran very well. It's hard for me to tell if I have a stumble from a standstill or not, because of the way the clutch engages a little late. I've got the Malossi 1k rpm contra spring in there, delta clutch with it's springs, and 7 gram roller weights in the variator. I'll take a video tomorrow during the day so you can see what I mean. The only reason I bring this up is that the carb still goes through fuel at a fast rate unless I'm nursing the throttle.

My Stage 6 EGT setup is supposed to arrive in the mail tomorrow. Where's the best place to drill on the PG Typhoon header for the sensor probe? Also, do I need to weld it on or is it okay to just drill a hole and use the clamp for it to hold it in place? I'd like to reuse the little piece that contacts the header just in case I decide to switch pipes at some point.

Hopefully, I've been running rich this whole time and can back off on the jet sizes in a bid to have better fuel economy.
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Re: Super Dio ZX AF28 build (video on page 2)

Post by bakaracer »

The egt should be mounted within 6in. of the exhaust opening so near the flange is good.I think you have to weld a nut for the probe to thread on to.have you played with the needle position?where do you have it set right now?
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Re: Super Dio ZX AF28 build (video on page 2)

Post by sanjuro »

I'm assuming the weld spot should be on the topside of the header? Can you post a pic of the ideal spot?

The needle is set at the stock position, and I haven't touched it. Ideally, I want to get this thing dialed in without having to do any adjustment to the needle position. I'll adjust it if things are out of whack, but so far things seem to be really smooth. If the temperature reading isn't crazy off, I'd like to get some more refining done of the jet size first.
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Re: Super Dio ZX AF28 build (video on page 2)

Post by bakaracer »

I don't have any pics but put it where its not in the way.did you get a 90deg angled sensor or the straight?
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90 honda dio sp 72cc
87 elite 50 s with 86cc watercooled mini stroke
87 elite 50 race bike mhr 72cc
91 yamaha tzr 250r
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Re: Super Dio ZX AF28 build (video on page 2)

Post by bakaracer »

sanjuro wrote:I'm assuming the weld spot should be on the topside of the header? Can you post a pic of the ideal spot?

The needle is set at the stock position, and I haven't touched it. Ideally, I want to get this thing dialed in without having to do any adjustment to the needle position. I'll adjust it if things are out of whack, but so far things seem to be really smooth. If the temperature reading isn't crazy off, I'd like to get some more refining done of the jet size first.
Sometimes the needle position has to be moved to fine tune the throttle response.If it feels like its a bit rich when you first grab throttle the move the clip up one to lean the needle out a little.
Nothing like getting stroked!
Thanks to my sponsors
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90 honda dio sp 72cc
87 elite 50 s with 86cc watercooled mini stroke
87 elite 50 race bike mhr 72cc
91 yamaha tzr 250r
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Re: Super Dio ZX AF28 build (video on page 2)

Post by sanjuro »

bakaracer wrote:...did you get a 90deg angled sensor or the straight?
I'll find out this afternoon, hopefully.
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Re: Super Dio ZX AF28 build (video on page 2)

Post by sanjuro »

Just got my EGT sensor and Kitaco primary gears (2.833) in the mail today. :D

Anybody wtb a 9:1 secondary gear drive set?
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Re: Super Dio ZX AF28 build (video on page 2)

Post by sanjuro »

I did 55 mph this evening using the Kitaco gears (9.71:1), and my acceleration improved massively from the 8.25:1 ratio (due to a mix of 9:1 secondary and ZX primary gears) I had prior.

When I was doing the install today I pulled the exhaust to get the rear wheel off. This gave me the chance to look at the piston at BDC. Looks like my mechanic that did the install didn't bother adding extra gaskets because the piston partially covers the ports by the smallest amount.

I could pull the cylinder head off and add extra base gaskets, but I'd prefer to find an aluminum one, which I don't have at the moment. I'm probably losing a bit of power there.

Anyways, halfway through my ride this evening I pulled over just to do a visual check of the bike. That's when I noticed the air filter had fallen off and was lost in the hills of Austin. :(

It was difficult to tell if the bike ran better, but I'll check the plug in the morning. Hopefully I didn't run too lean and damage anything.
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Re: Super Dio ZX AF28 build (video on page 2)

Post by bakaracer »

if you try and get the elite s gears and get your gear ratio to 9to1 your topend will be better and not loose that low to midrange you like.that 8.25to1 gears,what was the teeth count on those gears?
Nothing like getting stroked!
Thanks to my sponsors
Nos Energy Drinks,themopedcompany.com,nwautoevents.com,Cycle Gear
90 honda dio sp 72cc
87 elite 50 s with 86cc watercooled mini stroke
87 elite 50 race bike mhr 72cc
91 yamaha tzr 250r
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