1979 rx125 barn find

[s900t8v]

Hey all been a while since I’ve been on here. I picked up a 1979 rx125 that had been under someone’s house for many years. 

 

29000km on the clock. Seized front brake hydraulics. Totally worn out chain and sprockets. Engine has compression but crank seals have been leaking as gearbox oil was low. Bike has compression and spark but will tear down the engine and rebuild it properly. 
 

have been degreasing parts in ultrasonic cleaner and just generally tidying it up. 
 

so far I’ve rebuilt front brake hydraulics front forks. Replaced front and rear wheel bearings and seals. New sprockets. New tyres. I went with Bridgestone g511 front and rear. 
 

Next up is engine job. 

 

 

For anyone who wants check out my (mediocre) YouTube channel where I’m talking about it a bit more. 

https://youtube.com/@ejgrae1989?si=gExibA0efaB_JsgV

going to do an updated video for engine strip down process next. 
 

pland for the bike are to get it running in stock format then, port the cylinder and build an expansion chamber. I’ll swap on a 28mm flat slide too. 
 

cheers 

[Snakebite68]

Hey, looking good!
But, who would park a house on a motorbike???

[s900t8v]

Clearly a house enthusiast not a motorbike enthusiast haha 

 

 

here’s a video detailing brake master cylinder repair for the rx master which is different as far as I can tell to rd and sr cylinders particularly regarding the master cylinder to reservoir o ring 

 

https://youtu.be/aRGgANNYx5w?si=aHDY2FAu5940aKWA