1 Rallye K75 Fri Jul 02, 2021 2:16 pm
Triple B
active member
Hi all, I've been on and off the Forum for several years using the vast knowledge pool to help me figure out a few issues with previous K's.
I thought it was about time to put a few details in on my latest build.
Found online advertised as a Cafe Racer......it had been attacked with a hacksaw and had a Cafe style hump bolted on then left outside for a winter. I did however turnover and try and start with easy start sprayed in the airbox.
As i like a challenge money changed hands and it came home with me.
First issue, fuel pump seized. Ordered a new one and drained tank ready to fit it. The cause of the fuel pump seizure was then found. More water than fuel in the tank. The tank was duly drained and dried, new pump and filter fitted and new fuel.
A new Odyssey battery was also bolted on. At this stage some unusual gremlins appeared, the bike would try and fire, sometimes actually managing to fire for a second or two and other times not. All connections checked, injectors checked, plugs checked etc. Eventually found a link about a water in the ECU. Popped the silver box open, plugged it in and the bike fired and ticked over! The strip of foam that stops the PCB from vibrating was soaking wet and must have been sending signals all over the back of the PCB. Once dried out i put it all together and it fired and ran with no issues.
Next up time for me to modify the subframe.
Working out the angle for the top subframe tube/seat base plus a couple of additions to the front end to keep me inspired.
After endless hours of cutting, shutting, welding and grinding angles were decided and subframe done. The seat base was a combination of Aluminium and fibreglass to get the rear of the seat tight to the mudguard. An old Husaberg silencer was offered up and just needed tobe shortened by a couple of inches to fit.
Now most of the major construction was done it was time to try and make everything look good and fit together. Loads more welding and even more grinding to disguise my bad welding.
Hours shaping the seat foam before sending it off to Glen Moger, a top U.K. motorcycle upholsterer @glenmogercycles.
A quick test ride then time for the strip down.
All stripped down, wheels and frame sent for powder coating. Engine degreased and a new head gasket fitted. Everything else checked out and up to spec.
The engine was then painted with Simoniz engine paint. Once it has gone through a couple of heat cycles this paint gives a good hard finish. I also used this on smaller brackets etc and used a heat gun to put it through a heat cycle....previous use of the oven has proved unpopular with the other half!
The beginning of the end, loads of shiny bits ready to go back together very carefully. Wheels now fitted with Heidenau Scouts, nice looking adventure tyres not super chunky pretend motocross tyres.
So all back together and road legal, in this picture i was waiting for the BSK progressive fork springs and tank roundels. These have now been fitted to match the YSS adjustable rear shock. I might get some M Sport style graphics/stripes made for the tank just to add a little more colour.
So there it is, a K75 with standard electrics, ECU in the box with the battery, standard clocks squeezed in behind the KTM headlight and UFO GasGas mudguards/fenders.
Time to get out on the road and get some miles in, then it 'll be up for sale to make room for the next rescue project......an 80's style Endurance Racer on the road.
Thanks for reading,
Carl.
I thought it was about time to put a few details in on my latest build.
Found online advertised as a Cafe Racer......it had been attacked with a hacksaw and had a Cafe style hump bolted on then left outside for a winter. I did however turnover and try and start with easy start sprayed in the airbox.
As i like a challenge money changed hands and it came home with me.
First issue, fuel pump seized. Ordered a new one and drained tank ready to fit it. The cause of the fuel pump seizure was then found. More water than fuel in the tank. The tank was duly drained and dried, new pump and filter fitted and new fuel.
A new Odyssey battery was also bolted on. At this stage some unusual gremlins appeared, the bike would try and fire, sometimes actually managing to fire for a second or two and other times not. All connections checked, injectors checked, plugs checked etc. Eventually found a link about a water in the ECU. Popped the silver box open, plugged it in and the bike fired and ticked over! The strip of foam that stops the PCB from vibrating was soaking wet and must have been sending signals all over the back of the PCB. Once dried out i put it all together and it fired and ran with no issues.
Next up time for me to modify the subframe.
Working out the angle for the top subframe tube/seat base plus a couple of additions to the front end to keep me inspired.
After endless hours of cutting, shutting, welding and grinding angles were decided and subframe done. The seat base was a combination of Aluminium and fibreglass to get the rear of the seat tight to the mudguard. An old Husaberg silencer was offered up and just needed tobe shortened by a couple of inches to fit.
Now most of the major construction was done it was time to try and make everything look good and fit together. Loads more welding and even more grinding to disguise my bad welding.
Hours shaping the seat foam before sending it off to Glen Moger, a top U.K. motorcycle upholsterer @glenmogercycles.
A quick test ride then time for the strip down.
All stripped down, wheels and frame sent for powder coating. Engine degreased and a new head gasket fitted. Everything else checked out and up to spec.
The engine was then painted with Simoniz engine paint. Once it has gone through a couple of heat cycles this paint gives a good hard finish. I also used this on smaller brackets etc and used a heat gun to put it through a heat cycle....previous use of the oven has proved unpopular with the other half!
The beginning of the end, loads of shiny bits ready to go back together very carefully. Wheels now fitted with Heidenau Scouts, nice looking adventure tyres not super chunky pretend motocross tyres.
So all back together and road legal, in this picture i was waiting for the BSK progressive fork springs and tank roundels. These have now been fitted to match the YSS adjustable rear shock. I might get some M Sport style graphics/stripes made for the tank just to add a little more colour.
So there it is, a K75 with standard electrics, ECU in the box with the battery, standard clocks squeezed in behind the KTM headlight and UFO GasGas mudguards/fenders.
Time to get out on the road and get some miles in, then it 'll be up for sale to make room for the next rescue project......an 80's style Endurance Racer on the road.
Thanks for reading,
Carl.