Nicky DeVilles Racer --- Honda MT5 gone Cafe

[Streetfighter89]

Hi folks,

knowing my GT 250 would be finished very soon, well finished in one kind of way... lets call it street legal, serveral modifications will follow for sure, but a finished project always restricts your range of ideas immens, because it has already a overall direction.

That sircumstance made me thinking on what I'll wrench from that point on... in my rebel years I used to hooligan with a MT5 trogh the woods with no drivers license, that bike eventually got forgotten in the garden at my parents house, I've alwaqy wanted to rebuild it to original or supermoto, but now I think I start tunring it into a cafe racer, sound like quite a challange.

In Germany you are only allowed to drive with 49ccm bike around when you only have a car drivers license, thats the case with my girl friend Nicole, I'll build this one with her so that she learns wrenching and driving, when she feels comfortable rinding it she can make her motorcycle drinving license and build her own big machine.

I'm not planning on spending too much money on it, I'll use left parts from the GT-Project and my old MBX, like the GSX Tank, a Skateboard-Style seat, etc. I plan on shaving as much weight as possible, the MT5 weights around 90kg I think, mabye I reach 80 or 75.

Unfourtenatly in germany any change made to the 49ccm is illegal and there is actually no way to legalise the changes, so that would be a real pita, rims and the fork are things that have to be changed, I don't know how to do that legal yet.

Actually a found quite a good site for MT/MB 50 tuning: http://www.mb5.co.uk/14.html

Below a photo of the bike, the one in front with the green seat. I'm looking forward to collect it soon, the build is going to happen in my appartment!

 

[tomgbda]

Gonna be following this-I like to see small-displacement builds. I first got my hands dirty on a 50cc scoot, but I really got into it with a Honda NSR 75, a screaming pocket rocket. But this bike reminds me of my mates Yamaha DT 50. He swapped in a Yamaha YZ80 engine and it was a rocket when all of us still had 50s! Good luck man, hope she turns out nice.

 

[Streetfighter89]

In the UK they do a lot auf H100-Conversion with them, but I think a 125cmm MTX-Motor will fit in there too, but that much power isn't necessary for training purposes and staying in the living room.

Look what i found, a oil tank! Holds around 1 litre/32Oz

with the rim-valvle out of the automotive sector at the bottom and a really long M3-screw trough the cap as a level idicator it'll work out great!

That projects comes more and more to shape in my head. I'll go with the Comstarson the MBX in the picture of my first post, because it runs now NSR 50 rims. A 2.75 tire at the front and a 4.00 at the rear. The fork would be from a MB5 because it already has something like clipons.

Fitting the GSX-tank would be a hard job, the frame is quite wide and weird at the tank section.

Front mudguard is going to be the stainless one from my GT 250.

The headlight would be a oldschool one with a big streched bucket, from a NSU or something of that era. The wiringloom will be hidden and trimmed down, I think.

The only things to color on it would be the tank and the headlight bucket, not quite sure in what tone, but I'm thinking some sort of green is the way to go for.

The seat would be made out of my first skateboard that has a kickass graphic on it.

I'm really looking forward to get to work on it!

 

[Le55ons]

Just thought I'd share; An 80cc MTX motor is a pretty straight forward fit, all you need to do is drill a couple new holes in the frame for the front engine mounts (the ones on the head that is)
We do that all the time here in sweden and I've seen a couple of guys with 125cc MTX engines as well, and supposedly they are an equal easy fit.


I was never really into that engine switching, but I did have a shitload of tuning parts on my girl a couple years ago when I was racing her, easily topped out at about 110-120kmph. I figure I could have made it go about 10-20kmph faster but since it was on a track (most of the time : ) I really didn't need any more speed. Also, the stock frame was getting a bit, let's say "nervous", at 80kmph +, but god the stock engines are frisky with a little "basic" tuning!


I've even seen some MT5's turbocharged, good fun! (damn, probably shouldn't mention turbocharged mopeds in a DTT thread, someone might get a "bad idea") ;D


Sorry for rambling about, I'm may not be old but I did make my two wheel debut on an MT5. I am utterly in love with the model and have also picked up a few tips and tricks along the way.
Now get back on the build and make this little MT5 freak proud, good luck!

 

[Streetfighter89]

Thanks for your input!

Before I tried to make it street legal three years agao (obiviously I got distracted by my MBX) it had a 70ccm barrel with a 24 Mikuni-Carb, a performance exhaust from gianelli, improved ignition system and a mild port-job. I slightly cracked the 60mph, it was quite fun but totally illegal so I changed the motor against a stock one.

This engine sits now in the GT250-shed, waiting for its destiny, I think one day I'll put it in a MT5 Supermoto-Version.

 

[Le55ons]

Thanks for your input!

Before I tried to make it street legal three years agao (obiviously I got distracted by my MBX) it had a 70ccm barrel with a 24 Mikuni-Carb, a performance exhaust from gianelli, improved ignition system and a mild port-job. I slightly cracked the 60mph, it was quite fun but totally illegal so I changed the motor against a stock one.

This engine sits now in the GT250-shed, waiting for its destiny, I think one day I'll put it in a MT5 Supermoto-Version.

No shame in running a stock one, they are great bikes even then. My mt5 is currently mostly stock engine wise and I am scouting for a new frame since both rear shock mounts broke in a higly devastating crash a while back :


When she was running her best I had a cr80 cylinder with a "not so mild" port-job on her, 32mm Mikuni, homemade expansion chamber matched to the cylinder durations and a friend of mine cooked up a higly modified "stock" ignition. Also put in a 6-speed gearbox but didn't really "feel it" so finally i settled for a 5-speed. Sadly that engine is since long sold to another kid with go-fast ambitions, he later blew it in a not so legal sprint race.. Wish I had kept it