Quote from: giantkiller on March 27, 2025, 11:27:15 PMCool picture of them pouring concrete on the third morning. Took 11 truck loads.
I laid down all the styrofoam. Then rebar mesh (because the staples were on backorder) and ziptied (almost 2000 zipties) 8000FT of pex in place in 2 days. Because that's all the time I had. Between them laying the gravel and putting in the forms. And when they were starting the pour.

2 days to do all work still very impressive. A lot of manual work....

it's fun to ride.

Excellent! Your hard work has paid off...kudos!

third trip to the mountains. bike running great. running 18/40 gear ratio. 46-49 mpg
the sport demons are working well

Quote from: Pat Conlon on October 11, 2025, 06:59:58 PMYes, RPM sells a non vacuum Pingel petcock with an adaptor plate that fits our tanks but you need access in your left side cover to get your fingers in under the tank to move the fuel lever to the off and on position.

I have heard folks take the screen out of the side cover vent to do this.

I recall Dan aka: Giantkiller mentioning this. 



http://www.rpmracingca.com/proddetail.asp?prod=M%2FC%3AFJPetcock

$225.00 for the manual petcock vs. $190 for the oem Yamaha vacuum petcock, I know which I would choose.

Thanks Pat.  I agree, that makes no sense. 

Yes, RPM sells a non vacuum Pingel petcock with an adaptor plate that fits our tanks but you need access in your left side cover to get your fingers in under the tank to move the fuel lever to the off and on position.

I have heard folks take the screen out of the side cover vent to do this.

I recall Dan aka: Giantkiller mentioning this. 



http://www.rpmracingca.com/proddetail.asp?prod=M%2FC%3AFJPetcock

$225.00 for the manual petcock vs. $190 for the oem Yamaha vacuum petcock, I know which I would choose.

Quote from: Pat Conlon on October 08, 2025, 02:41:33 PMCall it a day with the oem 40 year old petcock and buy a new one.

There's other things in life to worry about....those wonky vacuum petcocks ain't one of them.

True.  But those petcock's aren't cheap.  Are there any aftermarket ones that would fit that bike?

Found a detailed disassembly video.... 

I never thought I would need this info but as it turns out - I DO!!    I am trying to swap the key mechanism from one 85' Cap to a newer better condition cap. 

I disassembled the original and all the parts fell out - so this reassembly help is greatly needed.  However, I am still stuck in trying to remove the key tumbler/barrel assembly itself.  It appears to be located with an o-ring on the inside after all the "finger assembly" is off. 

Can the key barrel be easily removed?  Whats the trick? I don't want to break it and end up chasing tiny parts.

Cheers!


tim

Thanks! It has been well kept over the years- of course has some wear and tear that comes with the age of it. Word has it that it was bought new, and  it was driven cross country 3 times before we got it.Has been in the family about 20 years.I hope it goes to a good home that will get many more years of enjoyment out of it!It is priced to sell (no doubt) due to it needing a few things listed above, and some dings or scratches here and there, etc...