baconpocket
eating bacon
Re: CG125 Kung fu rat racer
this is sweet. love your style
this is sweet. love your style
CG125 OHV Build Oddessy
- Thread starter Erskine
- Start date
Erskine
Over 1,000 Posts
Re: CG125 MOT PASS
Thanks Guys
And the Man from the Ministry said he was going to be very strict because the Feds WILL pull me :O
Even the brakes rose to the challenge!
Now for the fun getting it to run right ........ Shopping for a bigger main jet tomorrow.
Maritime said:
Thanks Guys
And the Man from the Ministry said he was going to be very strict because the Feds WILL pull me :O
Even the brakes rose to the challenge!
Now for the fun getting it to run right ........ Shopping for a bigger main jet tomorrow.
)
Erskine
Over 1,000 Posts
Re: CG125 On the road
Got the insurance docs today so was able to get this little critter road taxed at last!
$24 for 12 months as opposed to $300 for my truck.
Running rough as ten bears as I limped down the valley to a mates house 5 miles away, I was convinced that the ignition was at fault , Was an absolute dog at 2 - 3000 rpm. I didn't really think I'd make it.
Eventually arrived with hands numb from vibration.
We reset the valve clearances wider and discovered a clip wasn't holding the needle properly .........
Got it fired back up and my mate canned it down the road, it revved right through the range and was a different bike. There is still a dodgy spot between 2700 and 3000 rpm that has to be revved past.
I think this would require a new pilot jet to address.
Got back home to discover the lower engine bolt had lost its nut, and the down shift return spring on the gear change is very weak. otherwise mostly good.
The front end is a little bouncy, and I'm not sure if it is too much oil, too little or a crap front tyre?
The wireless speedo gets too much interference from the coil, so will reposition it.
I think it will need a new clutch/springs at some point and a new chain as well as a new kick start of course.
Got the insurance docs today so was able to get this little critter road taxed at last!
$24 for 12 months as opposed to $300 for my truck.
Running rough as ten bears as I limped down the valley to a mates house 5 miles away, I was convinced that the ignition was at fault , Was an absolute dog at 2 - 3000 rpm. I didn't really think I'd make it.
Eventually arrived with hands numb from vibration.
We reset the valve clearances wider and discovered a clip wasn't holding the needle properly .........
Got it fired back up and my mate canned it down the road, it revved right through the range and was a different bike. There is still a dodgy spot between 2700 and 3000 rpm that has to be revved past.
I think this would require a new pilot jet to address.
Got back home to discover the lower engine bolt had lost its nut, and the down shift return spring on the gear change is very weak. otherwise mostly good.
The front end is a little bouncy, and I'm not sure if it is too much oil, too little or a crap front tyre?
The wireless speedo gets too much interference from the coil, so will reposition it.
I think it will need a new clutch/springs at some point and a new chain as well as a new kick start of course.
baconpocket
eating bacon
Re: CG125 On the road
right on man. looks like you figured out the seat pad too
right on man. looks like you figured out the seat pad too
Erskine
Over 1,000 Posts
Re: CG125 On the road
This is how my silencer was made, it works well, gives back pressure and still sounds good with out pissing off the neighbourhood either. There are multiple ways of disrupting the gas flow, and a visit to rifle silencer forums can give lots of alternative ways as well. I paid attention to what some dudes on here said as well as my petrol head mates. If you do an autopsy of a honda 125 exhaust you will find that not only does the header have an inner sleeve but also that the header extends WELL into the silencer, way beyond where it appears to finish. I based my header length on the Sammy Miller trials exhaust and went for a 36" long one which we bent up out of 1" electrical conduit tube using a pipe bender.
The gas bottle is a little on the heavy side but was the right size and shape and was pretty much asking for it. I threaded the Conduit and used pipe fittings which made things very easy. Having mates who have welding equipment also helped.
I ended using a 16mm i/d exit tube. A pretty chunky support bracket was fabricated to carry it.
This is how my silencer was made, it works well, gives back pressure and still sounds good with out pissing off the neighbourhood either. There are multiple ways of disrupting the gas flow, and a visit to rifle silencer forums can give lots of alternative ways as well. I paid attention to what some dudes on here said as well as my petrol head mates. If you do an autopsy of a honda 125 exhaust you will find that not only does the header have an inner sleeve but also that the header extends WELL into the silencer, way beyond where it appears to finish. I based my header length on the Sammy Miller trials exhaust and went for a 36" long one which we bent up out of 1" electrical conduit tube using a pipe bender.
The gas bottle is a little on the heavy side but was the right size and shape and was pretty much asking for it. I threaded the Conduit and used pipe fittings which made things very easy. Having mates who have welding equipment also helped.
I ended using a 16mm i/d exit tube. A pretty chunky support bracket was fabricated to carry it.
Erskine
Over 1,000 Posts
Re: CG125 On the road
Thanks Brother Joey,
The total build cost including purchase has been under $300 so fun and function is the order of the day.
I'd like to do something with a little more finesse if funds allow next winter.
Possibly involving a BSA Bantam frame.
It's pretty here now, didn't used to be when the mines were open but time and nature heals.
Thanks Brother Joey,
The total build cost including purchase has been under $300 so fun and function is the order of the day.
I'd like to do something with a little more finesse if funds allow next winter.
Possibly involving a BSA Bantam frame.
It's pretty here now, didn't used to be when the mines were open but time and nature heals.
Erskine
Over 1,000 Posts
Re: CG125 On the road
Yo!
The Cg will probably be sacrificial for parts for a bantam build. I need to suss out what is good on this bike first as a lot could be transferred over, including the engine, front end, rearsets etc.
I dunno, but my mind is already quietly planning the evolution.
If this engine proves to be reliable I'll rebuild it with a 150cc head and barrel kit and pretty it up.
I'll see how I get on with it over the summer, enjoy it for now, and hopefully enter it for the October hillclimb.
It may end up having to be re-incarnated as a trials bike this winter if I'm still out of work!
revheadgl said:
Yo!
The Cg will probably be sacrificial for parts for a bantam build. I need to suss out what is good on this bike first as a lot could be transferred over, including the engine, front end, rearsets etc.
I dunno, but my mind is already quietly planning the evolution.
If this engine proves to be reliable I'll rebuild it with a 150cc head and barrel kit and pretty it up.
I'll see how I get on with it over the summer, enjoy it for now, and hopefully enter it for the October hillclimb.
It may end up having to be re-incarnated as a trials bike this winter if I'm still out of work!
Erskine
Over 1,000 Posts
Re: CG125 Maiden run sore arse plug chop.
Went for the first spin with no safety net of mates being about if it all went tits up.
22 mile round trip didn't miss a beat and I did a 'general running' plug chop when I got back.
What do you think?
However, the seat designed for a 2 1/2 minute short circuit hill climb is not back or bum friendly.
I'll be taking the foam off the rotten seat pan and making something kinder for pottering around.
I also finally got my old welder back from England at long last, a bit late, but someone gave me a load of transformer oil so I can recondition it. Transformer oil costs about $8 a litre here!
I also rescued a random plastic molding I found on a river bank, to make some shape of nose piece out of.
Went for the first spin with no safety net of mates being about if it all went tits up.
22 mile round trip didn't miss a beat and I did a 'general running' plug chop when I got back.
What do you think?
However, the seat designed for a 2 1/2 minute short circuit hill climb is not back or bum friendly.
I'll be taking the foam off the rotten seat pan and making something kinder for pottering around.
I also finally got my old welder back from England at long last, a bit late, but someone gave me a load of transformer oil so I can recondition it. Transformer oil costs about $8 a litre here!
I also rescued a random plastic molding I found on a river bank, to make some shape of nose piece out of.
Erskine
Over 1,000 Posts
Re: CG125 Maiden run sore arse plug chop.
I've been zipping about the place all Easter now doing short journeys, only carrying the kick starter and 2 spanners for it in case there is no slope to bump it down.
I put 2 litres of juice in it and have done over 50 miles which equates to 112 mpg in old school imperial Jeremy Clarkson gallons,
or, 94 mpg in the new fangled pond hopping Mork and Mindy US gallons.
Either way, that's a lot of bang for the buck. ;D
It's a nice little engine, and in it's low state of tune definitely exceeds my confidence in the tyres, brakes and forks.
I've been zipping about the place all Easter now doing short journeys, only carrying the kick starter and 2 spanners for it in case there is no slope to bump it down.
I put 2 litres of juice in it and have done over 50 miles which equates to 112 mpg in old school imperial Jeremy Clarkson gallons,
or, 94 mpg in the new fangled pond hopping Mork and Mindy US gallons.
Either way, that's a lot of bang for the buck. ;D
It's a nice little engine, and in it's low state of tune definitely exceeds my confidence in the tyres, brakes and forks.
