New to DTT, and starting a '73 CB125 cafe build!
- Thread starter nrcb125
- Start date
nrcb125
Been Around the Block
DirtbagUT said:
I'm not sure about 12V or 6V being much different in terms of battery eliminators. My understanding is that the 12V systems run half the current of the 6V systems. I don't think this will be a problem for the capacitors used the eliminators, but I haven't done extensive testing or research into it.
CALfeRacer
Fat man on a little bike
If you still need a speedo cable, I have an extra one from a 1979 bike that I'd be willing to send your way! PM me if you're interested.
nrcb125
Been Around the Block
It's been a while, but here's an update:
Clutch still hasn't been replaced. Work, classes, and design teams have been keeping me extremely busy. Plus the bike is stuck a few minutes down the road at my friend's place so it's been a pain to get out there and work on it.
Anyway, I just ordered a CB350 stator (see http://www.dotheton.com/forum/index.php?topic=50298 for instructions on how to install) and a Kohler regulator/rectifier. Hopefully I'll get the bike from my friend's place soon and get started on the rewire and 12V conversion and clutch replacement.
Clutch still hasn't been replaced. Work, classes, and design teams have been keeping me extremely busy. Plus the bike is stuck a few minutes down the road at my friend's place so it's been a pain to get out there and work on it.
Anyway, I just ordered a CB350 stator (see http://www.dotheton.com/forum/index.php?topic=50298 for instructions on how to install) and a Kohler regulator/rectifier. Hopefully I'll get the bike from my friend's place soon and get started on the rewire and 12V conversion and clutch replacement.
nrcb125
Been Around the Block
I just pulled the trigger on some 18awg wire and some automotive epoxy. I'm going to be rewinding the stator soon to get this old girl up to 12V. ;D I might even be tempted to 'borrow' a small engine EFI kit I know is laying around collecting dust.
Attached is an extremely well written and detailed guide from the CB125S Yahoo! group. Anyone with a small displacement single cylinder CB should join. It's a lot like DTT.
Attached is an extremely well written and detailed guide from the CB125S Yahoo! group. Anyone with a small displacement single cylinder CB should join. It's a lot like DTT.
BucketRacer
Beginner! All help is appreciated.
Hoping to do a CB125 as my first build... looks great! You're killin' it man. Love those shocks, too.
tom050162
Ride Bmx, Race motorbikes.
If I were you I would stick with the K&N those cheap Emgo filters have a restricted mouth on them.
If you look on the inside from what the carb mouth is it diameter decreases on the rubber boot, I read about it on a thread and didn't realise at all until I found myself dissecting one in order to increase the airflow. My 125 engine wouldn't pull past 55 with the filter on and now it rips up close on 70-75
Little piece of advice as I know how restrictive they are on the airflow, even better if you can create a velocity stack out of some PVC pipe ive seen work, maybe just 2-3 inches and attack the air filter onto the end of the pipe. That's what I intend to do, that's just me though.
Anyway, its looking sweet as right now, is that a Molkt flat slide I see on the engine?
If you look on the inside from what the carb mouth is it diameter decreases on the rubber boot, I read about it on a thread and didn't realise at all until I found myself dissecting one in order to increase the airflow. My 125 engine wouldn't pull past 55 with the filter on and now it rips up close on 70-75
Little piece of advice as I know how restrictive they are on the airflow, even better if you can create a velocity stack out of some PVC pipe ive seen work, maybe just 2-3 inches and attack the air filter onto the end of the pipe. That's what I intend to do, that's just me though.
Anyway, its looking sweet as right now, is that a Molkt flat slide I see on the engine?
THe exhaust bolts right up and clears the carburetor and engine perfectly. I'll have some pictures when it isn't so damn dark out.
nrcb125
Been Around the Block
Bumping from the bowels of DTT hell, but my 125 is finally road ready. I still need to clean everything up and paint, but the last few days of 60+ weather forced me to go out and ride.
A short list of mods/upgrades include:
Electrics:
Suspension:
Trans:
Engine:
Here she is as she sits today (sorry for the potato quality photo):
I bought a Trail Tech Vapor for my track bike and might be putting it on this one for when I'm not on the track as I don't really care about what the odometer on it says.
I'll try to get more done over spring break, but I'm pretty awful about updating this build thread.
A short list of mods/upgrades include:
Electrics:
- Stator rewind for 12V electrics
- GY6 scooter 12V reg/rectifier
- Kawasaki EL125 headlight socket + H4 bulb (fits perfectly in the bucket, but you'll have to get creative with how to attach it)
- Replaced battery with large capacitor
Suspension:
- RFY rear shocks
- XR100 forks + 1980 + triple tree + BBR springs + 30W fork oil
Trans:
- Versah clutch plates
- Barnett clutch springs
- Washer under the clutch pin (it wouldn't fully disengage, this seemed to do the trick)
Engine:
- 70s XL125 exhaust + DG muffler
- Carb from 80s CB125
- K&N air filter
Here she is as she sits today (sorry for the potato quality photo):
I bought a Trail Tech Vapor for my track bike and might be putting it on this one for when I'm not on the track as I don't really care about what the odometer on it says.
I'll try to get more done over spring break, but I'm pretty awful about updating this build thread.
