Looks like time to post new Honda CB-750 Seven Fifty cafe-racer updates.
The first is front mudguard. I managed question with mudguard itself quite quickly. I have few old mudguards from old soviet motorcycles (good metal I must say) and between them I found one which fits perfectly after it was cut and slightly widened. But the question of mounting was more difficult. The point is after I changed a front tire to 120/80-17 instead of stock 120/70-17 one, the fender mounting points on fork are right in the level with widest tire point, so there is a little room remained for mount itself.
After some thoughts I designed and made aluminum bracket ( from 3mm aluminum plate ) which aligned tightly to fork outer pipes. The fender itself could be mounted to it by four bolts. I also used stock CB750 fender mounting nuts. That’s how all looks like:
Last weekend I spent to make a tail tube for Seven Fifty cafe-racer. I have no any tube bender in my garage but I had intention to make tube which close to the very tail configuration, so tube bender was useless anyway. But I am good at workaround searching, so I decided to use the same method as in “Eight Ball” project. I spent a half of the day for preparation: fixed vise tightly on workbench, readjusted bend template to current tail tube configuration, filled the tube with fine river sand and so on. I had only one piece of the suitable tube at hand so I had only one attempt.
After everything was ready I heated the tube with gasoline blowtorch and bent it in template fixed by vise. Not the easiest way to do so, and a couple of times I felt lack of another pair of hands but I did my best and made quite good tail tube.
Then I made a couple of frame inserts to join sub-frame and tail tube. Here is a tail tube in process of cleaning:
I also cut Seven Fifty sub-frame right after shock mounting point to lower the tail tubes profile. After some adjusting tail tube was ready to be installed on motorcycle. I still did not decide what exactly angle should be between sub-frame and tail tubes so I left some gap between tail tube and rear tubes of sub-frame triangle.
And of course, I shot general bike views. You may also see all updates from previous post on them. I didn’t finish foot-pegs yet, so I’ll write about them after they are completed.