Express Tuners Question!

I've got a parts NA50 and I've pulled the CDI unit from it and I would really like to upgrade my Hobbit with said CDI/Stator but I'm worried about the thing being limited. The Wiki lists the NA50 CDI as being usable in a Hobbit, but is it limited? If it is does anyone know of a ox that'll help me?

Thanks all.

Re: Express Tuners Question!

I have heard that they are not limited, but also there was a post about some guy getting a CDI that is better at high RPMs.

Re: Express Tuners Question!

That's what I'm looking for. I remember a poste from maybe a year ago about maybe a yamaha CDI box that'll open the thing up... I dunno...

Anyone of you Hobbit tuners ever try/do this? Express guys? What's the word?

Routabit? I know you have some extreme Urbans...

Re: Express Tuners Question!

nate,

matt schmitz/doppelganger was the guy who put one of the unlimited ones on his urban.

found this link in one of his posts

http://www.bladepowersports.com/proddetail.asp?prod=90CDI&cat=115

or search urban express light tune or urban express mods threads if you wanna read more.

Re: Express Tuners Question!

Sorry, I'm running the stock CDI on the Extreme and it seems to work just fine. I haven't considered changing it because I can rev it as high as I feel comfortable pushing it.

Re: Express Tuners Question!

Routabit- That's exactly what I needed to know. Is that CDI a 12V setup or a 6V? I have a feeling that it's a 6V and I'm trying to figure out how to run my 9V water pump. Got any advice?

Re: Express Tuners Question!

im pretty sure thats a 12 volt setup you have nate that bike is an 83 so its gotta be by then

Re: Express Tuners Question!

I don't know. I've checked the express (NA and NC) wiring diagrams and they show all bulbs as being 6v- even on the CDI bikes.

Re: Express Tuners Question!

If it's not a 12v setup then have you thought about making a step up transformer? they are not that hard to do and it's quite cheap like 20 bucks for the parts.

Re: Express Tuners Question!

do you have to use the battery if you swap it into a hobbit?

I haven't dug thru the wiring diagrams yet, and the express I got is a 6V.

Re: Express Tuners Question!

Bartell- I don't know. I doubt it would need a battery. I pulled the wiring out of the junk bike and it seems complex but doable. 4 Wires from the stator 1 from the pickup 1 from a coil linked to the pickup and 2 from a seperate coil. The pickup and linked wires seem to run straight off to the CDI box while the other two dance around and juice the battery and lights and nonsense until they eventually come around and end at the CDI box. The Hobbit and Express have the same stator and woodruff key layout- so that is easy.

I think I'm going to find a step up booster or whatever they are called - like this guy http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=360165333328&fromMakeTrack=true&ssPageName=VIP:Watchlink:middle:us for my pump issue, but still attempt to put the CDI in a hobbit. I'll probably do it to my crappy commuter bike, It's been needing some tuning love forever.

Re: Express Tuners Question!

i think i still have the battery from thqt nike i could probably check if iits 6 or 12

Re: Express Tuners Question!

Joe- It's a 6v system - The Express didn't get a 12v system, except for maybe the 'golfers SR version'

Re: Express Tuners Question!

Nu 50 urban CDI bikes were all 12 volt . NA depends on the year . SR is the same as an nu motor . I just hard wired an urban and it does need the Battery to work . I also run the stock CDI on my bike , but an unrestricted one is on its way as a projects replacement for a harness with a bad CDI box . I dont expect much , but we will see . Some Dio parts cross over .

Re: Express Tuners Question!

Mine's a 12V system and you need a battery with a CDI. I believe I got my chassis from a gal in FL back in '05 with all of the wiring still in it, so....unrestricted? I'd say yeah.

Re: Express Tuners Question!

Bah. I'm giving up on this stupid bike.

- Well... No, but I am giving up on running the electric pump. Without installing a battery- or 12V system I can't run the damn thing. I'm going to look into plumbing it up for thermosyphon. If that fails I'm getting a mechanical cart pump. I know for thermo I'm gonna need to get a beffier radiator- and I'm much cooler with that then buying all kinds of wacky electro shit that will probably crap out on me.

Oh and here are some pictures of it.

Re: Express Tuners Question!

man that looks like so much hassle.

Re: Express Tuners Question!

I want more pictures of that hobbit Nate.

Looks rad!

Re: Express Tuners Question!

thats a badass bike!

Re: Express Tuners Question!

Thanks guys.

Re: Express Tuners Question!

Okay, here is what I've got going on.

Powdercoated the whole thing myself... in my basement... (THANKS SAM!)

The crossbeam is a piece of a fence post Harvey gave me- that I ground down and welded to the frame.

The tank is from a Solo Odyssey but I had to get creative to install the petcock.

The Cylinder is for a Yamaha Jog with the radiator being a polini moped radiator (radiator may change) The pump is an ARF33 racing pump made for a Malaguti (this too may change)

The pipe is a metrakit Derbi pipe that I cut a couple of times and rewelded to get it into a usable angle- of course I also had to add some spacers on the pipe side pedal arm to get it to properly clear.

The intake is a four petal 24mm intake for a DIO and the carb is a 24mm OKO that Josh gave me. (Carb is going to change- OKO sucks- but for now since I am broke it's doing it)

Lights and wiring are custom and I have Mags I need to strip, coat and install. I also have a TJT for it, but I'm going to break it in on the stock vario.

In all honesty it's been more work than money getting this bike to this point. Most of the parts and stuff have been pretty easy for me to get over the months, it's just figuring out how to make them work that has been the tricky part.

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