Father Son 75 CB200T Rise From the Ruins

[Texasstar]

Some conrod dimentions
http://www.aokiracing.com/MDP.htm

thanks Simo...let the hunt begin!


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[simo]

what's the longest that will fit?
A 80's ski-doo 377/447 is 115 center to center, 13mm wide, 30mm big end, 22mm wrist pin

Shim the cylinders up at the base?

More con rods on pg 54
http://www.pro-x.com/downloads/Technical.pdf
Prt 03.6605

 

[simo]

My wife asked me what else we could use a press for... We haven't forgot how far we have come and how far we still have to go! http://youtu.be/MO1jjOSkpms but we are still having a blast!


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And teazer was worried about the lathe taking a hand

 

[Texasstar]

Kop found the xc125 beluga that looks promising. Going to clean the gaskets off to get a better measurement. But we are looking in the 108-110 range.


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[Texasstar]

Kop found the xc125 beluga that looks promising. Going to clean the gaskets off to get a better measurement. But we are looking in the 108-110 range.


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[Texasstar]

And teazer was worried about the lathe taking a hand

oh yea that was a bad idea


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[simo]

http://www.mingyang-group.2u.com.tw/pdf/CAPT-conrod.pdf

Ya112
It's 112mm center to center 14 wide 13 wrist and 31 big end

According to the list cb100 k0 uses the same rod as your 200, knowing honda I'll bet if you found 2 you could use the flywheels and build a 49mm stroke crank

 

[Texasstar]

http://www.mingyang-group.2u.com.tw/pdf/CAPT-conrod.pdf

Ya112
It's 112mm center to center 14 wide 13 wrist and 31 big end

According to the list cb100 k0 uses the same rod as your 200, knowing honda I'll bet if you found 2 you could use the flywheels and build a 49mm stroke crank

ya112 also has a 26mm cp call us Lucky?


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[Cafe Mike]

Universal seat part #VINBTA will fit a wide variety of narrow to medium width frames.

Width at front: 6"
Width at tail: 8.5"
Seating area length: 17"
Total length: 27"
Tall at tail: 5.5"

We modified the seat length to 14"

I found it! Besides cutting it down, any other mods?

 

[Texasstar]

I found it! Besides cutting it down, any other mods?

just making brackets and welding them to the frame


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[kopcicle]

good work simo , we're closing in on it !

next we need some caged needle roller bearing catalogs and applications . ie: more flexibility in getting a 32-34 mm big end down to 26mm @ 14mm wide ...

~kop

 

[Texasstar]

Have a local scooter shop checking for the yamaha rods also. Some more info. Our new pistons have only 3.78mm to the top ring and AG Bell says 4.5 mm so we don't have much room to modify the pistons unless we drop a compression ring????? Also two compressed base gasket are putting us .8mm high.


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[Texasstar]

http://www.liyang-china.com/product8.htm

Found another


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[teazer]

Have a local scooter shop checking for the yamaha rods also. Some more info. Our new pistons have only 3.78mm to the top ring and AG Bell says 4.5 mm so we don't have much room to modify the pistons unless we drop a compression ring????? Also two compressed base gasket are putting us .8mm high.


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You can go much less than 4.5mm. I'm pretty sure ours are closer to 2.5 than 4.5 and the higher the ring the better right?

I love the journey, but this is a lot of work to make those pistons work. Would a couple of new sets of JE be cheaper? But what would be the fun in that?

 

[Texasstar]

You can go much less than 4.5mm. I'm pretty sure ours are closer to 2.5 than 4.5 and the higher the ring the better right?

I love the journey, but this is a lot of work to make those pistons work. Would a couple of new sets of JE be cheaper? But what would be the fun in that?

How many 700hp drag bikes with blown up cases do you get to see and that was just part of the journey on Saturday. David gave Zeke some JE pistons out of his motor that the crank broke in two and conrods. Yes it would be cheaper but what we are learning is priceless! I really like the idea of Yamaha rods in Lucky thank you for the info every mm counts...now how to mount the new cam chain tensioner


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[Texasstar]

Connecting rods on their way from Greece xc125 yamaha

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[Texasstar]

Mom thinks he should have won...but 3rd out of 180 is a show for the Science Fair http://youtu.be/ojaFku9p7C0 oh they wouldn't let him bring the Lucky inside


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[SONICJK]

That's awesome guys.

 

[Texasstar]

That's awesome guys.

thanks sonic


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[Texasstar]

How does this sound? We are gaining 8.5mm with these rods oh we have some serious tinkering to do... Ok if we are 5mm shy from zero deck that leaves 3.5mm to deal with. We have 3.5mm from the top of the piston to the first ring and we can make up 1mm there. The stock bottom gasket is .4mm and the top gasket is 1.3mm compressed. We are going to have to fly cut the head to match the quench of the piston leaving .050. We increase our base gasket to get to zero deck. We deck the head to get to the correct compression, fly cut quench, and worse case or best case depending how you look at it...make a bath tub.


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