Wonwings diary-Getting the best from your Twister Bell 47G

The Twister Bell 47G electric helicopter has taken the model helicopter world by a storm to new degrees of reliability and lots of fun without the hassle of many larger helicopter subjects.
These small models can be tucked under your arm and flown in a small paddox or even a larger garden,after flying mine now for several months under calm outdoor conditions ( usually late evening or early morning when the air is still ) it has made me realise the potential and convenience of these small designs which offer so much in terms of fun and flying pleasure.
The one thing that must never be overlooked with any working model helicopter,is maintenance,admittedly there is not much of that on this model but there are a few pointers that will keep your Bell 47 flying smoothly in order for you to get the very best of service from it,the one thing that will get damaged at some stage is the rotor blades,there are two opposite handed sets on this model which are very efficent,just make sure that they match up in terms of weight,they can vary between 3.5 & 4 grams for each main blade,a set of jewellers scales will prove invaluable fo this simple task,weigh each blade and compare the results,if they match then that is fine,but if not carefully sand a little from the heavier blade or add a small amount correction fluid to the underside of the light blade,believe me it makes a big difference in the way that the model behaves in flight.
If you have the misfortune to strike the flybar in a mishap then do not attempt to straighten it,get a new one and do yourself a favour,it will pay dividends in the smooth operation of your model,make sure that the flybar weights are well secured inside the vinyl boots,you do not want those flying out like a bullet ?
Anything that is damaged is best replaced soon as possible,keep a spare set of parts in your toolbox at the ready,all that you will need for this one is an extra small phillips screwdriver to undo the tiny self tapping screws,be careful and do not drop them onto the floor,they are difficult to see.
The plastic main frame will get the occasional bump and possible breakage,you can use cyno with a bit of kicker to fix any non structural skeletal part with reasonable success,the vulnerable bits are the small outrigger rear planes,and any part of the framework,just make sure before flying that nothing is floating around that will get caught up with the rotors.
Normally I would say keep the antennae as straight as possible,but with this model the antennae is just in the way and gets chopped by the whirling bits,if that happens then you will almost certainly loose range or at the worst radio contact,tests have proven that looping it around from tail to nose has no harmful effects,in fact my model has flown at great height without any bother so be careful of this often overlooked point,you could even find some stiff thin plastic tube to lead the antennae well away from the tail,but be careful of the centre of gravity if you take this route,the model should balance with a slight nose down trim from holding it just under the rotor head.
The double sided tape holding down the combined receiver and gyro is best also supplemented with a small elastic band,if that works loose then you will loose the gyro operation and probably crash,it is not worth the risk.
Likewise with the lithium battery which is slung underneath and held via some velcro,add a band as well for extra security.
Tomorrow I will discuss the flying of this little gem and tell you how to get the vey best from her,even if you are a raw beginner,she really is a fun model to handle.

The Twister Bell 47G electric helicopter has taken the model helicopter world by a storm to new degrees of reliability and lots of fun without the hassle of many larger helicopter subjects.
These small models can be tucked under your arm and flown in a small paddox or even a larger garden,after flying mine now for several months under calm outdoor conditions ( usually late evening or early morning when the air is still ) it has made me realise the potential and convenience of these small designs which offer so much in terms of fun and flying pleasure.
The one thing that must never be overlooked with any working model helicopter,is maintenance,admittedly there is not much of that on this model but there are a few pointers that will keep your Bell 47 flying smoothly in order for you to get the very best of service from it,the one thing that will get damaged at some stage is the rotor blades,there are two opposite handed sets on this model which are very efficent,just make sure that they match up in terms of weight,they can vary between 3.5 & 4 grams for each main blade,a set of jewellers scales will prove invaluable fo this simple task,weigh each blade and compare the results,if they match then that is fine,but if not carefully sand a little from the heavier blade or add a small amount correction fluid to the underside of the light blade,believe me it makes a big difference in the way that the model behaves in flight.
If you have the misfortune to strike the flybar in a mishap then do not attempt to straighten it,get a new one and do yourself a favour,it will pay dividends in the smooth operation of your model,make sure that the flybar weights are well secured inside the vinyl boots,you do not want those flying out like a bullet ?
Anything that is damaged is best replaced soon as possible,keep a spare set of parts in your toolbox at the ready,all that you will need for this one is an extra small phillips screwdriver to undo the tiny self tapping screws,be careful and do not drop them onto the floor,they are difficult to see.
The plastic main frame will get the occasional bump and possible breakage,you can use cyno with a bit of kicker to fix any non structural skeletal part with reasonable success,the vulnerable bits are the small outrigger rear planes,and any part of the framework,just make sure before flying that nothing is floating around that will get caught up with the rotors.
Normally I would say keep the antennae as straight as possible,but with this model the antennae is just in the way and gets chopped by the whirling bits,if that happens then you will almost certainly loose range or at the worst radio contact,tests have proven that looping it around from tail to nose has no harmful effects,in fact my model has flown at great height without any bother so be careful of this often overlooked point,you could even find some stiff thin plastic tube to lead the antennae well away from the tail,but be careful of the centre of gravity if you take this route,the model should balance with a slight nose down trim from holding it just under the rotor head.
The double sided tape holding down the combined receiver and gyro is best also supplemented with a small elastic band,if that works loose then you will loose the gyro operation and probably crash,it is not worth the risk.
Likewise with the lithium battery which is slung underneath and held via some velcro,add a band as well for extra security.
Tomorrow I will discuss the flying of this little gem and tell you how to get the vey best from her,even if you are a raw beginner,she really is a fun model to handle.
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