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[arjun_aero]

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guys if any1 is using redline53 heli engine then plz give ur experience with the engine... thanks

[second_chance]

i have 4 os50 hyper engine and one rl 53. all i can say is that the rl53 is a power horse.

but one bit of advise/suggestion for anyone using this big block -
initially i had a regular tt muffler on and it could not breathe. was diagnosed with pulmonary oedema
next i fitted a muscle pipe and it could not breathe again. was diagnosed with asthma
next came the hatori (i think the 522). could not breathe again. was diagnosed with pneumonia

since i had all these pipes lying around, i had the liberty to try them out. i tried changing fuels from fully synthetic to castor/synthetic mixes along with various ratios of nitro but had only bad news all along. was very difficult to tune. till one day hopelessly i was wandering on runryder.com that i came across a post of a flyer who had been thru the same pipes as me and he then got him self a redline muffler to match it. so i followed his experience and ordered mine. i couldnt believe the difference. seems to be as good or a shade better than my os hyper now. i have gone ahead and ordered another set of the motor and pipe for my other model  > have used complete synthetic and it screeches with a smile.
so go ahead with it but remember to use the motor/pipe combo else you will regret the potential of this motor.
you could purchase the pipe from rotorzone or rotor.co.in online.

enjoy

[second_chance]

also let me add that the engine runs much cooler now and no hassles as far as tuning is concerned. i am a very happy heli soul now.

this was my personal experience with this motor and pipe.

however, i did have a bit of an emotional mishap when my redline pipe gave way midair. yep, it actually gave way by splitting into 2 halves. this happened on its 6th to 10th flight (approx). i got in touch with the seller and emailed the pics of the better halves  . i have recev my replacement at no cost. so i am a happy heli soul once again ! but remember this can happen to any brand. there are flyers across the world who have suffered from this better half situation as well. 

remember  - dont fly something you cannot afford ! cauz what goes up has to come down !   its true.

[arjun_aero]

thank u for your reply. i have got the redline pipe along with the  engine i was little worried about the reliability of the engine because first time i am using thunder tiger engine....

[anwar]

There is some discussion about 53 redline here :

http://www.rcindia.org/helis/thunder-tiger-raptor-50-titan/msg18089/#msg18089 (start with this post, there is some discussion from that post onwards).

http://www.rcindia.org/helis/heli-engine-tuning/

Now everyone has moved on to the newer OS 55s on their helis, as they have even more power.