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Raised Bed
Why doesnt the tuner adjust the map according to his findings on the dyno?
Aren't 2 strokes fun! Go carts are so intense, precise.Thanks Dave! Yes, I remember that very well! Must have been some of my earliest posts on GSR around January 2009!
Here is a photo where my son (#6) is struggling to stay ahead of the previous year's champion (#1) and nearly getting it crossed up into the corner!
The Walbro carb (very common on small 2-stroke engines) has 2 mixture adjustment needles (for low and high speed). On the 100cc engine in the go-kart the carb sits behind the driver and quite low down, so my son had to find the high speed needle "by feel" to adjust it when the engine started to get hot near the end of the races.
I strapped an old carb to a belt and made him wear it around the house, and practice to put his hand down and back to find the needle and tweak it slightly to make the mixture richer! I replaced the diaphragms after every race in order to ensure maximum performance, and we came second in the championship that year by 2 points, so I knew my way around those Walbro carbs!
Very glad to hear that your chain saw is running again Dave!
Today, realizing my state inspection sticker has a #8 on it, I headed to the dealer after work. When I got there I remembered that when I took the back wheel off to change tires last week, I noticed that the welded tab that secures the chain guard at the front was broken, and I just hadn't bothered to come up with a fix for it, and so hadn't bothered re-installing the chain guard. I asked the shop guy if a chain guard was necessary to pass inspection. He said, "unfortunately, yes". So back home I go with no new sticker.
After thinking about it for a while, and not wanting to spend any money, this is what I came up with. I'm no metal fabricator. But I have a dremel and a bench sander, and neccessity is the mother of invention.
