switch26
Key Veteran
Location: CA
| ok guys i've been asked many times,How do you balance two diferent blades to make a set from two crash survivals?well this is going to take just alitle time to explain,but hopefully by the time youre done reading this you should be able to make your own set of blades out of two single blades,
the process is simple and require some simple tools,i used a cheap $12 digital scale and a kyosho blade balancer,you could doit with just the balancer it self and will still work just fine but i prefer to use a scale,you'll also need a drill and some drill bits,a marker,some plumbers soldering led and some epoxy or JB weld,ill include some pictures as i go so heres how...
the first step is to put each indibidual blade on a digital scale,mark the lighter blade with a marker,i use a water marker this way i can clean it easily with out using any solvents,
  
ok so the lighter blade is only about 5 grams lighter,you can mark it as the lighter blade as explained,now lets get some led,the goal here is to achive a 190.9 on both blades,right?so ill put both the blade and the led to come up with a total weight of 190.9 grams
ok next step is to find the center of gravity on the heavier blade and mark it,
 
put the lighter blade on top of the heavier blade that you just marked and transfer the mark onto the lighter blade,this is the tricky part,put the heavier blade aside and now put the lighter blade on the balancer with the mark that you just transfered right at the balance point on the balancer,
at this point if the blades have a diferent center of gravity you will balance both the weight and the cg to one another,in rare ocasions you will find that the blades all though weight diferently they might be cg'd at the same spot,
in that case you will have to put the necesary weight,i.e led right at the center of gravity mark,this way youre only matching the weight with out changing the center of gravity,i hope im not losing you here,
  
ok so now we know where to place the led,mark it with a marker,now lets put both blades on the balancer to double check and place the led right where you marked it,both blades should balance perfectly,
aint that a beauty? Just Kidding,heres the blades being balanced
notice the led,this is where i marked it and this is where all that led will be going,
now all you need to do is drill a 1/4 inch hole right on the mark for the led but remember you dont want to doit on the top side of the blade,doit under the blade so it doesnt show,start the drilling with a small drill bit and work your way till you get to 1/4 inch,drill the hole on the thickest part of the blade,usualy 1/3 from the leading edge of the total blade chord width,
cut the led in real small pices or if you can find some real small pellets would work better,unfortunately i havent been able to find them my self and this has worked great for me,once you cut the led in small enough pices you can mix some JB weld and mix it with the led,
put the blade on the scale and start filling in the hole till the blade comes up to the needed weight,allow the JB weld to cure,usually overnight once is all cured you can either sand it off flush to the surface of the blade or put just alitle clear cilicon and let it dry,recheck the blades and youre good to go,
im sorry if this is too long of an explenation,im trying to cover everything so that by the time you finish reading this you can do your own blade matching,if theres any questions regarding this topic just shoot me a pm and ill do the best i can to help you,hope this works for you guys,save those blades and save some cash
happy flying
Raf |
