Here's one.
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![Image](https://bannedcr500riders.com/images/auto/b643a556a54d85a85ce0be33c04eb213.jpg)
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On the bike.
![Image](https://bannedcr500riders.com/images/auto/590500e2a1fffec56c0a1a6809399861.jpg)
Beautiful - I wonder would it clear the side of my large Clarke tank.
I still have a couple needs for upgrades throughout the fall and over the winter and this may well be one of them. I will contact you when I get ready to do this. Here is one thing I do not understand - if low compression causes difficult starting ( I experienced this first hand) then why doesn't a decompression valve have the same effect?Roostius_Maximus wrote:That head is like the ones I do also, most of the side mount ones didnt clear the big tanks, I had always installed them stair up before because of that. I did sell some side mount stuff that didnt need to be welded also.
I have a strait up install R casting head ready to go if you need one
Got it. I know the 4 stroke hotstarts will stay open as long as you hold the lever.Gmbond wrote:these are a poppet style valve, you push it in and it "snaps" down...
when kicked they will stay open, but upon the first good pop or fire from the cylinder it kicks them shut. Sometimes if the bike pops/fires it will kick them shut before it starts and you need to reset the valve again to kick again. My Valve is on the right side of the cylinder head, so when i reach for the kickstarter its right at my fingertip to push in, it seems a little more natural on this side to me as i only need to use the one arm to get the kicker and the valve. Some people have rigged up cables to allow a bar mount hot start lever from a 4T to be used to bump it open, some of these setups are pretty damn sweet.
There are several different manufacturers of the valves, including some chainsaw designed ones... (STIHL)
AV&V
Goodson
S&S
Screaming Eagle
all make the same sort of style but i haven't got any clue what is best...
ya it could, mine does it every once in a while, also with a little throttle it will run with it open, i didnt pass soundtest so i held it open with my knee, and richened up the air screw, also put it in gear and kept a little load on it with the clutch, and backed away from the tent the bike was suposed to be parked underif the decomp stuck on, it would never start
It bloody well should start easier. There's not much bloody point if it doesn't. It shows it to be an ill thought out design, however pretty it might be.mr500 wrote:Who said its easier to start?.. Decomp means it's only easier to Kick!
Maybe its cos the mixture is going out the decomp valve and not back into the crackcase via the rings?
One thing i did notice is it's harder to find TDC wiith the valve in.
BIt like an xr400.
Better to find TDC first then push the button.
What is an ill thought out design? What am I missing when you say that? Its late and I might not get it right now...It shows it to be an ill thought out design, however pretty it might be.
Id like to see your design, or sell me the plans to do myself?Mine, you just kick the bike, and it goes. No levers, buttons , TDC finding, or anything to mess with. Fit any tank you want. I don't try to sell them on sites, as I've more than enough to do, but I've done quite a few for people who have sought me out. Unless I'm 'snowed under', if a OZ owner sends his parts (head, and carb) to me by Express Post, they get the finished job back, in less than a week from when they sent their stuff.