The bike produces about 18.5 hp at the back wheel.
See the new frame. About 160 lb
marshland.co.nz/CB150Frame.html _Not sure how you make 120 lb as everything on my bike is made from thinwall tube and aly.. Maybe the slicks add to my weight.
HMM still think you will get humped by loads of125lc`s of the same decade , as the unrestricted versions were pushing 21bhp (standard) along with kawasaki`s AR 125 21BHP and yamahas 125lc . Been intresting , but i feel using what is basicaly a low reving CG125 engine was a bit of flogging a dead horse even when giving it an extra 25cc .
4 Stroke can have a powerband when the cam exhaust and intake length all come together. My latest exhaust pipe is really good and has a 2 stoke rasp when the power comes in. When racing against Suzuki's RG150cc (2 stokes) this weekend, I powered out the corners much faster than them but they caught me on the main straight. See marshland.co.nz for the new frame under Racing.
@deathmetaldude468 All engines run best at a certain RPM, 2 stroke or not, but its more noticeable in small and tuned engines. A stock CB100 kicks at about 6000 RPM.
We are not allowed race bike motors in F4 racing. Standard road bike motors only.
100cc 2 stroke water cooled, 125 cc air cooled with 26 mm max carb and 150 cc 4 stroke. I had a lot of fun getting 18 hp from a 1980 motor. Cheers Wallace
@factoryXperimental ow i know a 4t overrunning that much i doubt will be much more reliable than a 2stroke and cost more to fix but what would the world be without underdogs and in my opinion a better sound :P
okay I beg to differ. what makes a 4 stroke more reliable?? The extra moving parts? LOL tell me, can you put a 300cc larger cylinder on this bike and expect some reliability? fuck no. And as for under dogs, going fast isn't for everyone.
From what I've read, it appears to not affect the performance. Look at the Britten for bends in the exhaust pipes. I suppose there will always be a compromise. Straight would be best, but sometimes the bends might not be ideal but it means that you can have a pipe that fits the bike. So instead of 100% and a pipe that scrapes on every corner, 90% is better with no touching.
No, it is a 270 degree at 40 thou.
kiwiavi 3 months ago
Are you running a standard cam profile? Doesn't sound like it?
simonspiers 3 months ago
You will have to copy and paste the links as youtube does not allow h t t p links.
kiwiavi 10 months ago
Here is the bike in action.
youtube.com/user/kiwiavi#p/a/u/0/lMsGv0ovG-c
kiwiavi 10 months ago
The bike produces about 18.5 hp at the back wheel.
See the new frame. About 160 lb
marshland.co.nz/CB150Frame.html _Not sure how you make 120 lb as everything on my bike is made from thinwall tube and aly.. Maybe the slicks add to my weight.
kiwiavi 10 months ago
18hp? how much does the bike weigh? ive got my 125 putting down 14hp and the weight is down to 120lbs. rad bike man
xedge4lifex 10 months ago
HMM still think you will get humped by loads of125lc`s of the same decade , as the unrestricted versions were pushing 21bhp (standard) along with kawasaki`s AR 125 21BHP and yamahas 125lc . Been intresting , but i feel using what is basicaly a low reving CG125 engine was a bit of flogging a dead horse even when giving it an extra 25cc .
kawa7900 1 year ago
It was Graham Harris's dyno but I now have my own one in the shed.
kiwiavi 1 year ago
what happens at like 3:41,its like the bike hits the powerband even though its not 2 stroke ?
deathmetaldude468 1 year ago
4 Stroke can have a powerband when the cam exhaust and intake length all come together. My latest exhaust pipe is really good and has a 2 stoke rasp when the power comes in. When racing against Suzuki's RG150cc (2 stokes) this weekend, I powered out the corners much faster than them but they caught me on the main straight. See marshland.co.nz for the new frame under Racing.
kiwiavi 1 year ago
@kiwiavi how do you get them to come together exactly ?
deathmetaldude468 1 year ago
@deathmetaldude468 7 exhausts, 2 cams, 5 intake manifolds, etc later. It helps that I have a dyno in my shed.
I have added my latest dyno plots.
Try this link marshland.co.nz/ftp/CB150/DynoRun.JPG.
kiwiavi 1 year ago
@kiwiavi lol new zealand one of the few countries in the world that allow two stoke bikes :D
grantourismo0109 10 months ago
@deathmetaldude468 All engines run best at a certain RPM, 2 stroke or not, but its more noticeable in small and tuned engines. A stock CB100 kicks at about 6000 RPM.
KapteinOpel 1 year ago
sticking it to the 2stoke bummers ;)
fukwiththestars 1 year ago
Well done fella! Great job. Makes me want to do that to mine...
arachnoblaster 1 year ago
all that work to get what a cr85 motor produces stock...
factoryXperimental 1 year ago
We are not allowed race bike motors in F4 racing. Standard road bike motors only.
100cc 2 stroke water cooled, 125 cc air cooled with 26 mm max carb and 150 cc 4 stroke. I had a lot of fun getting 18 hp from a 1980 motor. Cheers Wallace
kiwiavi 1 year ago
@kiwiavi
Any air cooled older two stroke motor can be opened up to some decent horse power, what was spent on this bike would have built you 20-30hp 2 stroke.
factoryXperimental 1 year ago
@factoryXperimental and what's wrong with an underdog ?
fukwiththestars 1 year ago
@fukwiththestars
well it depends, do you want to win races or do you like to cruise?
factoryXperimental 1 year ago
@factoryXperimental maybe you should watch a few bucket races before making that assumption
fukwiththestars 1 year ago
@fukwiththestars
another thing you need to look at is reliability, and this is not the answer.
factoryXperimental 1 year ago
@factoryXperimental ow i know a 4t overrunning that much i doubt will be much more reliable than a 2stroke and cost more to fix but what would the world be without underdogs and in my opinion a better sound :P
fukwiththestars 1 year ago
@fukwiththestars
okay I beg to differ. what makes a 4 stroke more reliable?? The extra moving parts? LOL tell me, can you put a 300cc larger cylinder on this bike and expect some reliability? fuck no. And as for under dogs, going fast isn't for everyone.
factoryXperimental 1 year ago
@factoryXperimental Don't let me tell you how engines work... allot of people do like underdogs i for one am one of them.
fukwiththestars 1 year ago
@fukwiththestars
No, don't let me tell you how motors work, and underdogs are for people that enjoy going 25mph under other racers.
factoryXperimental 1 year ago
From what I've read, it appears to not affect the performance. Look at the Britten for bends in the exhaust pipes. I suppose there will always be a compromise. Straight would be best, but sometimes the bends might not be ideal but it means that you can have a pipe that fits the bike. So instead of 100% and a pipe that scrapes on every corner, 90% is better with no touching.
kiwiavi 2 years ago
the bend on your header dosnt affect flow/ performance?
wingking077 2 years ago
Awesome man! Now... get some footage of you racing this puppy! I don't think my FXR puts out that kind of power at all. I need to work on it
IPhantomLordI 2 years ago