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Old 08-10-2013, 02:24 PM   #46
CalsXS2 OP
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Did your set screw that you put on the gear come loose. BTW. What size did you use. I want to do mine too.

I wonder if you could have some run out in the starter, letting the shaft go out farther than it is supposed to.
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Old 08-10-2013, 04:44 PM   #47
appiebroomer
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[QUOTE=CalsXS2;22071861]Did your set screw that you put on the gear come loose. BTW. What size did you use. I want to do mine too.

tight, checked it. #10 32tpi
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Old 08-11-2013, 01:13 PM   #48
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Yamaha TX750 starter clutch mod!!. OH YA!!

The one-way starter bearing off of the Yamaha Raptor 660 is very similar.

If I can get my hands on one, I will definitely do some research.

Here are a few pictures of the Yamaha Raptor 660 one-way starter bearing and gear,





This eBay auction has specs / dimensions of actual bearing for the Raptor 350,
http://www.ebay.com/itm/2013-new-Yam...6ecd3f&vxp=mtr

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Old 08-11-2013, 08:45 PM   #49
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What goes in this hole. It is threaded like a bolt goes in there. But there is nothing in either motor I have.

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Old 08-11-2013, 10:57 PM   #50
argo1974
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Pardee: I've had Raptor clutches (there are 2 different types depending on production date) in my hand and they are far too big to be adapted to TX.

Calvin: this bolt hole is just for pulling out the rubber plug and an aluminum plug behind it. Once you have them out, you have access to the shaft of the front balancer weight.
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Old 08-12-2013, 08:00 AM   #51
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Quote:
Originally Posted by CalsXS2 View Post
What goes in this hole. It is threaded like a bolt goes in there. But there is nothing in either motor I have.

That is just a plug in a rubber seal. The threaded hole is for removal with a slide hammer. The outer cover retains it when installed.
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Old 08-12-2013, 09:16 AM   #52
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The cover gasket is going over part of that rubber seal. It looks like this would be a possible oil leak. I would think the gasket should be trimmed away a little bit to clear the seal?? Do you guy's agree.

I do have oil leaking all over the place. I'm thinking this maybe one of the leaks. New gasket on the way.
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Old 08-12-2013, 10:12 AM   #53
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Originally Posted by CalsXS2 View Post
The cover gasket is going over part of that rubber seal. It looks like this would be a possible oil leak. I would think the gasket should be trimmed away a little bit to clear the seal?? Do you guy's agree.

I do have oil leaking all over the place. I'm thinking this maybe one of the leaks. New gasket on the way.
Disagree, the seal is at the ribs molded into the OD of that plug.
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Old 08-13-2013, 08:33 AM   #54
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Disagree, the seal is at the ribs molded into the OD of that plug.


After closer inspection (I removed the gasket) I can see that the rubber get's smashed flat where it contacts the gasket. It's just squished up above the gasket area.
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Old 08-13-2013, 08:42 AM   #55
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Is there any clamp's on the bottom left side of the motor securing the clutch cable.

I see some along the right for the starter wire.

If you look at this pic, #22 and #23, it shows some clamps. So do you have anything securing your clutch cable.


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Old 08-13-2013, 09:23 AM   #56
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My clutch cable is only "secured" by a loose metal clamp near the bottom of the right down tube. The clutch cable outer assembly has a protective spring wrapper on it where it bends around the transmission case, and the metal tube where it bends back up to connect to the actuator. I'm pretty sure #23 is for the starter cable and suspect the same for #22.

Confirmed-both are for the starter cable, #23 at the right front of the case, and #22 at the center rear.

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Old 08-18-2013, 12:15 PM   #57
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Originally Posted by argo1974 View Post
Opening and closing ramps of the TX camshaft are both 0.10mm, so you will destroy valve shaft/adjuster screw ends on the long run. Valve clearance is usually 1/2 of ramp height for removing the play in valve train smoothly. Otherwise the rocker goes immediately into full acceleration while hitting the flank.


So Argo. What do you recommend setting them at.
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Old 08-19-2013, 05:46 AM   #58
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I recommend factory setting of 0.05mm. And, I'd recommend aftermarket adjuster screws with flattened ball ends.
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Old 10-21-2013, 07:01 PM   #59
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Starter Clutch Progress?

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Originally Posted by argo1974 View Post
Hi there guys! Calvin was kind enough to invite me joining that thread. At first, I'd like to thank him for detailed pics/instructions about installation procedure of the modified starter clutch.

This one way bearing is called Borg Warner type since that company invented and patented it back then. That's why Japanese manufactures continued using the out-dated and fragile 3 roller starter clutches on their bikes at 70-ties.

Both of the two starter clutches I sold to US (John (farmrjohn) and Calvin (CalsXS2)) were pre-series as I call them. They already have the updated inner bearing bodies since first prototypes were just machined by hand with standard size engaging rollers fitted.

The new design is very similar to pre-series unit but I was able to drop the costs by simplifying the machining and hardening procedure of the outer ring. I'm still testing the new version, especially with the spring tightness of the one way bearing. This is because most of you guys will use it together with more or less worn (out of specs) starter gear.
I think I will have the tests completed within 4 weeks. Our summer is short in Estonia, so I really don't like messing around with metalwork when I could ride my bikes instead ;)
Here are my two 73" Yamaha TX750:
http://www.bilder-hochladen.net/file...qr-cu-f5f8.jpg
http://www.bilder-hochladen.net/file...qr-cr-9a96.jpg

That one on first pic is taken to bits and pieces for complete restoration and engine mods though.

Argo

Just wondering if anyone knows if further progress made on the starter clutch improved model and possible for sale date?
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Old 10-22-2013, 12:24 PM   #60
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Yamaha TX750 starter clutch mod!!. OH YA!!

Quote:
Originally Posted by far2389 View Post
Just wondering if anyone knows if further progress made on the starter clutch improved model and possible for sale date?
I am definitely on the watch out too!
Please update us as soon as possible!
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