Upgrading the 3MA Marlboro bike

[EEKNOWS]

Can you move the pick ups or stator?

Buy this and you can measure a 1 deg change


http://www.ebay.com/itm/EQUUS-INNOVA-Pro-Digital-Timing-Light-DIS-5568-/271061446515?hash=item3f1c856f73&item=271061446515&pt=Motors_Automotive_Tools&vxp=mtr

[Louis]

Can you move the pick ups or stator?

Yes of course I can move the pickup (have already don that with a two degrees pickup move)
It will be possible to make the pickup 4 degrees adjustable. but then i'll be going the same route that i did

A couple off years back even more (with a complete pickup placed 180 degrees further)

Perhaps I should work this idea out better. As it worked.
I could switch between the pickups with a swish that I connected at the same pickup wire color

The idea of unhooking the TPS sensor is to try the well discussed 1/8 curve (on Japanese sites)
Think when the wetter clears up I will make a small test drive, see if there is a noticeable different with no strange noises coming out of the engine.

[rvt2002]

Louis did you used the 3ma sprocket carrier or FZR400rr?

[Louis]

Hey,

I used the 3MA sprocket caccier,
But you need to be modified it. To allow it, to go deeper inside the rear wheel rubbers.

All work can be done on a lath
(when i start my new project bike, I'll make some detail pictures and measurement)

Cheers

[Paul]

Hey,

I used the 3MA sprocket caccier,
But you need to be modified it. To allow it, to go deeper inside the rear wheel rubbers.

All work can be done on a lath
(when i start my new project bike, I'll make some detail pictures and measurement)

Cheers

Ja Louis. I'm also waiting for your post on this. Dan sent wheel last week. So will be looking to do this soon.

[Louis]

Ok, ill try to speed thinks up.

[Louis]

On many requests

Here you have a manual how to fit a fzr400rr (4,5x17) wheel into a 3ma swingarm.
There will be more possibilities, but this is how I have done it.

Working the sprocket carrier:

Startingpoint:


Take 3mm from the top


Make the side 3mm deeper (take the outside diameter as reverence, you can take 0.2mm off  to have a clean service)


Make the innerside 3mm deeper (take the inside hole diameter as reverence, you can take out 0.2mm to cean the service)


Make 45 degrees seeker points at the tops (this will help you mount it easier


Make a 3,5 mm spacer (20 X 40 X 3,5 MM)


Take 3mm off the sprocket spacer:


Cut all rubbers loss, and grind a way the notches (top and botom) as they are 1,5mm high (given you the 3mm back)


Place them in the fzr wheel (loose of course) and if necessary grind some of the notches at the height of the rubbers


Mount the Sprocket carrier (You can use some silicone on the rubbers to make it glide easier)


Mount the whole wheel in the 3ma swingarm



And whola its ready.


Hope this will help you guys.

Cheers

[Russ B]

Nicely done.  Is there any benfits too fitting the 17" wheel other than more choice on available rubber?

[Louis]

Nicely done.   Is there any benfits too fitting the 17" wheel other than more choice on available rubber?

Thanks, its mostly done for the better tires choice's
Perhaps it handles better with a 17 inch wheel, but that is a guess from me as I doubt if my rider style is that good to notice the difference

Cheers

[Paul]

Thanks a million Louis.
We have tyre problems here for anything that is not 17" and saying that even 160/60-17 can be hard to find.
I will commission an engineering shop (all i have to do is print your post) to do this work, I do not own a lathe.
Thanks again Louis. You're a star.

[Paul]

Took my hub and your printed instructions into the engineering shop and he was so impressed with the clear instructions. Well done Louis.

[Louis]

Hello Paul,

Thanks for the feed back. Hope your engineer will get it done .

If for some reason he is getting stuck. He can check his modifications in the end by removing the rubbers outside the wheel and place the sprocket carrier, he should now be able to feel free movement of the sprocket carrier (not completely turning it, it will hit a brich lets say 15 degrees)

So in short terms if al 3mm is removed the sprocket carrier should be turning 15 degrees without hitting/scratching anything (this without rubbers) is it scratches something grind it away until its free.

Cheers

[Louis]

Well, today I had my first ride off the year with the 3MA .


Now I could test my TPS by hand to feel if I can notice something.
Can't feel any changing in 1/1 or 1/2  or 1/4 position.
But you feel a difference in the 1/8 position , its more powerful in the mid range.
I certainly will test this on a dyno.

Last thing I changed at the bike is fitting a FZR400RR front wheel to mach the FZR400RR rear wheel.
Its one off a few mods where you don't need to change any thing, its a straight swap. Going from a 3.0 to a 3.5 front wheel with a new 120/60/17 tire on .

When I get the time, she will go on the dyno to see what she is doing

Cheers guys
Enjoy the weather

[Paul]

thanks for that
ill check it out
bike looks sweet