Tgb r50x

[triesandluth]

Jan 29, 2016 18:44:14 GMT -5 Jwhood said:

Jwhood to the rescue,i got17.50-17.75 mm on back "splizzinez"" hope that help,yeah i have severe insomnia and millions of ideas running threw my head about modifiying scooters 24 hrs a day dont help!!!lmao

The insomnia part is mainly work induced for me, but I share your troubles of scooter brain. I can't get enough!

[triesandluth]

Split the case. Wasn't as hard as I expected. And everything looked relatively good in there. Side to side play of the connector rod was a bit more than I think is good, but forward and back is about non existent. I was hoping that there was some kind of damage that was visible, a little justification. The bearings seem okay too, a bit tight on the one that I can get to at the moment. I'm trying to figure out a good strategy to not destroy anything to get the crank from the case variator side. A bit late to be banging on it. And the snow it's starting and blowing up onto my table.
Here's some pictures. Already planning what's going to be removed, what I'm going to add to smooth out the spots where the head bolts bulge up, and other fun. Gonna read back through Jwhood build thread to see what he did with his case. Once I get the crank fully out I'll be asking you nice people some dimensions, or donations of trashed cranks, wink wink. Hopefully I can do some mad scientist shit and shove a nice minarelli crank or something in this beast.

[Raizer]

I'm about to split a late Suzuki Morini, will be interesting to compare pics to your TGB ones!

Found out a bit of info on the differences between a few of the Morini engines the other day, most Suzuki 2T scooters have a Franco Morini AH engine.
The TGB and most other late model Morini powered scooters run a later design AL series Morini engine.
And then late Suzuki's like the Street Magic and my Let's used the "Suzuki Morini" which was developed by Motori Minarelli -yes, that Minarelli!
Which is why next to nothing on my engine beyond the cylinder, head and clutch assembly will interchange with my wife's Morini engine.
Hopefully you find that as interesting as I did!

[Jwhood]

Yeah bottom mount morini are way different then top mount

[triesandluth]

Feb 10, 2016 2:10:01 GMT -5 Raizer said:

I'm about to split a late Suzuki Morini, will be interesting to compare pics to your TGB ones!

Found out a bit of info on the differences between a few of the Morini engines the other day, most Suzuki 2T scooters have a Franco Morini AH engine.
The TGB and most other late model Morini powered scooters run a later design AL series Morini engine.
And then late Suzuki's like the Street Magic and my Let's used the "Suzuki Morini" which was developed by Motori Minarelli -yes, that Minarelli!
Which is why next to nothing on my engine beyond the cylinder, head and clutch assembly will interchange with my wife's Morini engine.
Hopefully you find that as interesting as I did!

Made me a bit dizzy for a second, but I'm picking up what you're dropping. And I hope to see many pictures in your thread. That brief little history also just gave me a glimmer of hope that there will be a possibility of finding a crank other than morini that, with modification, will be able to be used.
I know it's far fetched, and a lot would say impossible, but I'm a dreamer. A rational dreamer, but a dreamer none the less.

[Raizer]

I have read talk of a Mina crank being fitted to a Aprillia possibly, but it was a very old thread I found trawling the web late one night and all the pics were dead.
Mina crank will give you a longer stroke too, ever notice that a 70cc kit for a Morini is often specified as a 68cc in the fine print while the same kit is 70cc for a Minarelli?
That's down to the difference in stroke apparently.

[drc174]

Start by checking the distances between the cylinder struts

other than that, some research in the german scene - the Morini (Street Magic) is NOT interchangabel with minarelli stuff.

Sure, cvt and clutch can fit, i mean 107mm clutch bells fit almost any engine, but crank and so on, no way.

Web pages like sip and scooter center from germany have good morini stuff, not too hard to find.

The way i understand, the TGB is morini?

[drc174]

Here some research:









SO:

Cylinders are interchangable

Cranks are not

[triesandluth]

Yes, morini, and very little choice for a good crank other than an Italjet crank. Not many variators that are plug n play. I'm still in the process of trying out clutch components. Bell is 107mm, but the rear pulley is 122mm iirc.

[drc174]

Torque driver: Can mount 107mm Minarelli

CVT - there is a NARAKU and Stage6 one

ANY Clutch at 107 is possible

[triesandluth]

Hey! Cranks other than peirspeed and naraku and no name that look like they wouldn't need mods! But, still little for variators, inner rotor stator, etc.
Maybe I could do like jwhood and use an Italjet Mhr full circle crank and find an inner rotor... Then find the kick-start mechanism.

[drc174]

Honestly, the full circle crank isnt that necessary as you wont find a cylinder with the proper high port times.

I would configure this engine in a different way, a way many forget about.

Torque.

That means: Low in-engine pressure, BIG and longer inlet tract, long exhaust (QTRE isnt bad in that regard) That way you can keep 8.5-10k RPM in a nice, sporty yet surprising fashion

Now, the magic here has to happen inlet wise

Get a reed valve from a 65cc 2 stroker, dirt bike or something
and greate an inlet tract for it

[triesandluth]

The torque driver from the tgb is bigger than the Kymco or gy6 but will not go on the Kymco, it's a bit longer and once the bell it's tightened it locks down on the pulley. Clutch is easily swapped, using a tgb clutch on the Kymco right now.
Desired end result, find a crank that will be able to fit that has more options. There's a lot of material that can be taken away without busting through. I just need to get my measurements and measurements of other cranks and see where I sit.

[Raizer]

Feb 10, 2016 4:19:12 GMT -5 drc174 said:

other than that, some research in the german scene - the Morini (Street Magic) is NOT interchangabel with minarelli stuff.


The way i understand, the TGB is morini?

I never said the Street Magic engine could use Minarelli parts, I said that it was designed in a collaboration between Motori Minarelli and Suzuki, this is before Yamaha outright owned Minarelli, this engine is known as both "Late Morini" and Suzuki Morini"
The only parts the same as the old Franco Morini AD and AC engines Suzuki made under license and used on older models is the bore assembly, nothing else at all swaps over (besides the clutches, which as you say are fairly generic).

TGB uses another Franco Morini engine design, the Morini AL engine, nothing to do with Suzuki at all.

[triesandluth]

Feb 10, 2016 4:33:26 GMT -5 drc174 said:

Honestly, the full circle crank isnt that necessary as you wont find a cylinder with the proper high port times.

I would configure this engine in a different way, a way many forget about.

Torque.

That means: Low in-engine pressure, BIG and longer inlet tract, long exhaust (QTRE isnt bad in that regard) That way you can keep 8.5-10k RPM in a nice, sporty yet surprising fashion

Now, the magic here has to happen inlet wise

Get a reed valve from a 65cc 2 stroker, dirt bike or something
and greate an inlet tract for it

I actually was wanting to keep 10k and I'm not expecting record breaking speeds. The s9 has me for fast. I want this to take off like a rocket and look sweet. I'm going to put in a lot of focus on the cosmetics, new rear suspension, maybe lowered a few inches.
The reed block on it seems okay, I'll have to look into the one you mentioned. After I opened the intake it helped quite a bit. But I would like to fashion some thing. Lots to do still and lots to think about!