Paul's Yamaha 3MA track bike

[Paul]

Swapped the carbs to the 34's I had converted into single units.
This allows me to use 2 of the 5ke throttle cables and a TZ throttle
I did a few improvements in the process.
Also changed the jetting
I am almost ready for the dyno

I see all my paint came today to

Here's a video of it running on the 34's http://youtu.be/uA_Uj8Vj9tQ

[Paul]

Did some work on the cdi
I'm replicating the TZ 4xv curve as a start point
Also some painting

[Tim]

Your 3ma sounds great! One of these days I'll get mine going again.
I think you'll like the pegs. Very grippy. Woodcraft also makes nice clipons too at a fair price.

[Paul]

Pegs are great. Thanks again.

[Paul]

Got a pair of SP heads I'll now cut and modify for inserts. Cheers Dan.
After the dyno I will have a better idea on how to cut them. I'm considering going back to pump fuel and simply copy a TZ profile but then I'll need flat pistons. Any ideas?
I am also considering working on my spare engine and trying something out the box. Like boring it out. I can't find the link to the 5ke modified 3ma but think I should keep the same stroke. Any ideas.

[Paul]

Took heads in for modifying this morning.
It's quite a little engineering feat so we'll see how he gets on
Took my spare engine up to the workshop and started to strip
It looks good in there except I've had a foreign object go through, there was a time I was running open carbs
I'll sell this head and make a thread for it.

[Paul]

The bloke doing my heads has done nothing while I've been away. His high speed on his lathe went down and he also went on holiday.
Just as well as my setup is so close and all it ever needed was 1/2 hour on the dyno so ill do this important step rather than compound matters with different pistons and heads. I'll get this right BUT I am going to do it with high grade pump fuel rather than Avgas.
In the meantime I've done some painting.

[fozzy]

like the single seat look forward to seeing it up and running..

[Paul]

like the single seat look forward to seeing it up and running..

Here is a clip from when I first got it started here in UK after almost 2 years storage.
Bigger carbs on it now and a different ign curve... And a paint job. 

http://youtu.be/msGJrXukuXY

And here one with the larger carbs

http://youtu.be/ogCgiLIQGVs

[casal-fan]

Looks and sounds really good Paul.
Can´t beat the sound of the straight 180* 2cylinder. It´s glorious
On a completly different matter. I tottaly forgot I was supposed to send a couple of pics of some special 34mm mikunis.
I can do if you still interested... but your bike sounds pretty good with those.

Paul, be careful with those rigid footpegs. The std. mounts are not very high, and there is the risk of them touching the asfalt, mine did when pushing a bit more. Not so dangerous on std. retractable ones, but rigid mounted can be dangerous I guess.

[Paul]

Cheers CF
I raced it just before the rebuild and I had a lot of people come up to me and say it had a true GP-bike note to the exhaust.
I didn't push you for those carbs as I eventually sat down, cleared the table and finished the 34's I have converted into single carbs. Makes changing the needle easier and I prefer each carb having its own cable.
I'll see if I can get to the dyno Wednesday. I just need to test if it'll run on unleaded first. I need a policeman free piece of road.
Cheers for the pointers on the foot pegs. I tend to ride until I feel the sides of my feet scraping the tar and that is an indication that I am getting too wise.

[Neal]

What head volume you have ?

[Paul]

13.2:1 if a remember correctly

[Tim]

Very nice looking and sounding!!

[Need4speed]