futureprimitivemoto
New Member
Hey all,
This build is quite a ways along already, but I thought I would share with everyone here on DTT
I bought a CB360 for $300 that had been parked since the mid 90's. The pistons were so seized in the bore they needed an air hammer for removal, so the engine went in the scrap bin and I began hunting for and engine to transplant.
The plan was always to create a monoshock, lightweight cafe racer with inverted forks, so I wanted to buy a donor bike that could provide me with an engine and suspension.
Yamaha Banshee's were discussed, CBR's seemed a bit overkill, even considered a Ninja 250 (not sure what I was thinking). Then along came a good running '05 crf450x for a good price, and the teardowns began.
Conceptualizing... The motor fit way to awkward in the CB360 frame, big frame modifications to come
New bottom rails were fabbed up, as well as down tubes from the backbone. To keep the bike as light as possible, this chunky subframe had to go. Also forked over way too much money for supermoto wheels from Warp 9. Front forks were temporarily lowered just buy making new grooves for the spring stops inside the forks.
Scored a CBR600RR shock, made some upper and lower shock mounts, and started fabbing up an aluminum subframe. Also picked up a racy tail section from airtech streamlining.
Looking a little more like a bike. Cant even begin to tell you how much welding and notched tubing pieces went into this thing. And how many miscut notched pipes went into the scrap bin.
Faster the better right? the engine got a fresh top end, Kibblewhite SS valves, stage 2 hotcam, but most importantly a 3 ring JE piston from a TRX450r quad for better top end life. Also got painted to look like a filing cabinet.
Im a sucker for pie cuts, and excessive amounts of welding apparently.
Forks needed to get finished up. Lowering twin chamber Showa's is one of the easiest mods in the world.
Needed to get clever with the cooling system. Front rads dont look great on a vintage cafe racer, so I did my best to be discreet as possible with the cooling system. Hidden reservoir under seat, radiator mounted underneath the engine (yes i know its a terrible spot but it works and theres a belly pan going to be made soon)
Here in Canada winter is well under way so I managed to get one ride in before the snow fell.
Still needs a huge amount of work, but the bike us a solid runner.
Weighs in at 238lbs with a 1/4 tank of fuel
Yes, its fast.
Thanks for looking!
This build is quite a ways along already, but I thought I would share with everyone here on DTT
I bought a CB360 for $300 that had been parked since the mid 90's. The pistons were so seized in the bore they needed an air hammer for removal, so the engine went in the scrap bin and I began hunting for and engine to transplant.
The plan was always to create a monoshock, lightweight cafe racer with inverted forks, so I wanted to buy a donor bike that could provide me with an engine and suspension.
Yamaha Banshee's were discussed, CBR's seemed a bit overkill, even considered a Ninja 250 (not sure what I was thinking). Then along came a good running '05 crf450x for a good price, and the teardowns began.
Conceptualizing... The motor fit way to awkward in the CB360 frame, big frame modifications to come
New bottom rails were fabbed up, as well as down tubes from the backbone. To keep the bike as light as possible, this chunky subframe had to go. Also forked over way too much money for supermoto wheels from Warp 9. Front forks were temporarily lowered just buy making new grooves for the spring stops inside the forks.
Scored a CBR600RR shock, made some upper and lower shock mounts, and started fabbing up an aluminum subframe. Also picked up a racy tail section from airtech streamlining.
Looking a little more like a bike. Cant even begin to tell you how much welding and notched tubing pieces went into this thing. And how many miscut notched pipes went into the scrap bin.
Faster the better right? the engine got a fresh top end, Kibblewhite SS valves, stage 2 hotcam, but most importantly a 3 ring JE piston from a TRX450r quad for better top end life. Also got painted to look like a filing cabinet.
Im a sucker for pie cuts, and excessive amounts of welding apparently.
Forks needed to get finished up. Lowering twin chamber Showa's is one of the easiest mods in the world.
Needed to get clever with the cooling system. Front rads dont look great on a vintage cafe racer, so I did my best to be discreet as possible with the cooling system. Hidden reservoir under seat, radiator mounted underneath the engine (yes i know its a terrible spot but it works and theres a belly pan going to be made soon)
Here in Canada winter is well under way so I managed to get one ride in before the snow fell.
Still needs a huge amount of work, but the bike us a solid runner.
Weighs in at 238lbs with a 1/4 tank of fuel
Yes, its fast.
Thanks for looking!