Friday, November 11, 2011

Moon Shooters

In Malaysia, exhaust pipes that angle skyward are called "Tembak Bulan" exhausts, literally translated in English, that means Moon Shooting Exhausts. In general they are just like those old school shotgun exhausts you see in those 70's movies.

I initially had no intention of having these pipes look the way they do, I always wanted side exiting pipes on both sides of the bike. Unfortunately for me, that doesn't work due to the chain. So we redesigned it and made them the way they look now.

Now what you see in these pictures are actually just the beginning, the pictures were taken the day after the Bad Wolf was released from BDC and the following day, he was shipped to my good friend Anson for "Fang insertion". Generally, what we are doing now is making the seat, and making the exhaust just a tad more "interesting". Will update more when I see it. I haven’t seen my Bad Wolf for 2 months now.



By Vy

Thursday, November 10, 2011

Sproc Jobs

Now that everything has been done properly, one would need to think about sprockets.

Messing around with the sprockets can do many things for ones bike. For example, if you want your bike to be just a drag strip bike and cover the 400meters in a blink of an eye, you would want mad acceleration. Back in the day, my mechanic used to tell me, there is no such thing as HIGH acceleration and HIGH top speeds, unless you turbocharge your bike.

Most people would just give you the right sprocket size as the manual says, but, you can always tweak this. If you want to save fuel while cruising at a higher speed down the highway, or you need to have the acceleration of speedy Gonzalez, this is one way of doing it.

Once your bike is set and your carbs are tuned, try this:

Higher acceleration: look at the number on your rear sprocket, and tell your mechanic to get the sprockets with 2-4 numbers higher.

More top speed:look at the sprocket number, and go 2-4 sprockets lower.

Imagine your old bicycle, be it a mountain bike or any race bike, there are gears. Same concept.

For some, having a large sprocket in the rear may look nice, but what happens to your bike? It accelerates like a bat on fire but I guarantee your bike will be guzzling fuel and probably not going very fast on the highway. What do you do? You need to adjust the ratio of your sprocket by doing something about the front sprocket too.

Now, as far as charts go, I have seen some strange settings, but hey, who am I to judge right?

Ok, the general idea is this, the bigger the number on the chart, the faster the acceleration. The smaller it is, the higher the top speed. Now, on a standard bike, the ratio is usually 2.7-2.8. this will give you more acceleration and less top speed, but, in our case, a larger carb and some mods to the exhaust and intakes have fueled the acceleration. So, the best option would be to have a good balance more or less. If you are one who weaves through traffic more, please maintain the 2.7 ratio, but if you spend more of your time on the highway, you can always have better top speed by going around 2.5 to 2.4.

Now, in my case, I want my sprocket to look big so its nice and looks cool. Thus I bought a 46 rear sprocket. I need my ratio to be 2.5 so I had purchased a 18 key front sprocket. Look at the attachments I had added in and just send me a comment if you need more help with this



By Vy

Carb Tuning:

Was packing up my stuff to prepare to move and I found my little book of notes for plans when we were building the Bad Wolf. I hope this helps you guys out if you want to tune

  1. Find the air jet
  2. Tighten it all the way in
  3. Turn air jet 1.5 turns out (usually default settings)
  4. Warm Up Engine
  5. Tighten idle control screw slightly (maybe 1-2 turns)
  6. Turn the air jet out ¼ of a turn.
  7. Wait to see if idle increases (give the throttle a slight blip to help)
  8. Repeat until idle cant go any higher (if you have to turn over 3 turns for it to max out, change to a smaller air jet.)
  9. Loosen the idle control screw till its all the way down. If idle is too low, perform step 6-7 until idle is low enough but does not die off.
  10. Blip throttle to see if there is a lag when it revs, if yes, perform steps 6-9 until you get it right.

Note: if you can't get it right (i.e. lags when blip, revs not low enough), you may need a smaller main jet.


By Vy