copperclad Elite Veteran Location: ..
| hi
i had a project i wanted to work on and came across the $30.00 closeout Century is having on the hummingbirds
a few weeks before i got the chance to see a Hirobo Quark flying and after seeing how amazing the Quark is flying , and looking one over very carefully at the LHS , i got to thinking it would be a fun project to try and apply what Hirobo has done on the Quark , to a Century Hummingbird both the CP and the FP
the most obvious thing is the offest flybar and since it was the most involved mod i left it for last , and worked on all the other changes i could , i went over all the links and made them all silky smooth and i played around with flybar lengths and weights , higher headspeeds , better servos , and it was interesting because the HB still did not fly anywhere near as nice as the Quark i had seen
this left me thinking about how the Quarks flybar is setup like the stabilizers used on the small coaxials , it is linked to the swash and it has paddles like a flybar , but it is also very heavy and offset like a stabilizer , it seemed to really be a hybrid between the two
i thought about moding the stock HB hub to get the 45 degree twist , but soon realized i would probably just be wasting my time and decided the thing to do would be to just scratch build one from some 3/8"alloy bar stock i had
here is a photo of the stock HB hub on the right and the new hub on the left

and this shows the new hub installed

this last photo shows the offset from overhead

so with the new hub and flybar weights the difference is night and day , the machine lifts straight up on takeoff and you can just park it in the air and it will hang there , but it can still cut nice circuits , figure "8"s and stall turns , i won't hazard to say if it is as good as the Quark , but i will say it is a huge improvement over the stock HB , really amazing to see the change the offset hub made on the stability of this machine
i have been flying it both with and without the flybar weights and it is very fun for the back yard
i posted this in the Quark forum a while ago , and just saw there are still some HB fliers , so i thought i would post here too , dana . |