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HomeAircraftHelicopterCentury Radikal G20-30 N640 Hawk Predator › Starting the hawk pro correctly
02-08-2008 03:40 AM  10 years agoPost 1
Dilbeck

rrElite Veteran

Springdale Arkansas

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Have ask a lot of questions and received many answers, All of which have fixed any problems i could not figure out, THANKS, One that keeps fighting me is starting my OS37 engine with the stock starting shaft. Started out using the Heli-Max super start starter, I start out by turning on the tx then the receiver, insert the starter and crank a few rounds, then connect the Hobbico Hot-Shot2 and start cranking, It sounds like all hell is breaking loose. Didnt know when to pull up on the starter first off, Just thought it would start and i would know it. Not the case, It just keeps cranking as long as i keep it on there. Figured out by pulling up on the starter when it starts cranking hard it will sometimes start and sometimes not and sometime start running backwards!! I have broken 2 fans in the process of starting this heli, It never seems to be the same everytime. Had the engine on the bench one time and just flicked the fan over one time by hand and away it went. It makes a loud racket while cranking the engine(While in the heli) It did the same thing on my 2nd hawk pro i bought for a spair. I even broke the heli-max bolt from the shaft several times, Seems like 2 or 3 revolutions should do it. What am i doing wrong for their are no instructions what so ever about this or anything else for that matter that is of any importance other than ball link measurements which are all wrong. The only reason this heli flys like its on rails is because of you guys here on RR. I must have to wonder if the guys from Century are thinking "just build it and RR will take care of the rest". Another example is the full metal head upgrade and the upgraded 4mm flybar, Just a package, no instructions what so ever, Their are so many washers that if one is put before or after the other will lock up the bearings. Century says look up the Raven,hawk sport/so in so manual and it will give you the instructions. Bull Sh#$, They are nothing like it and if i could see that small and detail from their pictures i would be working for NASA or something. OK im done for now, got on a roll, just want to fly my heli if i could only start it before i sheared off another fan or killed another starter. O forgot to mention the engine is tuned to perfection, could not run any better.

Clint

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02-08-2008 04:58 AM  10 years agoPost 2
oysifly

rrVeteran

Bentonville, AR

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I'll send you a PM.....I live in Bentonville and I'll be glad to help. Maybe you can bring it by the house......

Quick...here comes my wife....hide that new Heli !!!!

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02-08-2008 07:11 AM  10 years agoPost 3
Gearhead

rrMaster

Vt

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""It sounds like all hell is breaking loose""

I guess I don't know what your getting at here,, but if the starter system is making a lot of noise when your trying to start the heli I would bet you don't have a wand with a oneway bearing, you need a wand with a one way bearing !!..

""Just thought it would start and i would know it. Not the case, It just keeps cranking as long as i keep it on there. Figured out by pulling up on the starter when it starts cranking hard it will sometimes start and sometimes not""

here, try to start your motor with short bursts of 5 seconds or so with the starter..

""and sometime start running backwards!!""

a backwards running motor means it's to rich,, but because it does not start and run backwards all the time you may "may" be close to the right setting, just lean the idle screw a little bit..

""I have broken 2 fans in the process of starting this heli""

here you could be braking fans because when you lift the wand the starter is still powered on and the wand is spining faster than the motor is turning,, you need to let-go of the starter's switch a couple seconds before you lift the starter, this allows the starter/wand to slow to match the motor's speed,,, and or (again) you need that wand with a oneway bearing..

""It makes a loud racket while cranking the engine(While in the heli)""

see, this tells me you need that wand with a oneway bearing !! (and or, your motor is a bit rich, it's trying to start backwards)..

""the engine is tuned to perfection"",, your high-end needle may be right, but if is starts and runs backward it's idle is to rich..

something also tells me you may need to raise your idle..

wand with an oneway bearing,, I have the one in the link and it works well and holds up well,,
http://www.heli-world.com/CENTURYHE....aspx?ID=CN0427

good luck let us know how it works out..

Jim

Jim
Buzz Buzz Buzz

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02-08-2008 12:20 PM  10 years agoPost 4
Dilbeck

rrElite Veteran

Springdale Arkansas

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Thanks wasp, fixed the running backwards thing due to over rich idle needle sometime back but did not know that was the cause till you made light of it,Just figured i had gotten better at starting it. One way starter wand, Sounds like i need one of these, I will give the 5 second burst a shot to see if it helps out.

Clint

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02-08-2008 02:28 PM  10 years agoPost 5
Invrted1

rrVeteran

Cincinnati, Ohio

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I am having similar trouble with a Hawk. So far I have not solved it either. Come back and let us know what works for you.

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02-10-2008 08:25 PM  10 years agoPost 6
Invrted1

rrVeteran

Cincinnati, Ohio

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I finally got mine worked out, the low needle was way rich. Now that it is set right, a 2 second hit with the starter and it will go. If I leave the starter on longer than 2 seconds, it does not start. Now I just have to get rid of a tail wag

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02-10-2008 11:43 PM  10 years agoPost 7
Gearhead

rrMaster

Vt

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another tip, if your motor is lean it wont start well ether, or if your motor at idle makes a na na na na na sound it's too lean,, start another thread if you cant get the wag to stop..

Jim

Jim
Buzz Buzz Buzz

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02-11-2008 11:24 AM  10 years agoPost 8
Dave M

rrApprentice

Mi.

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get the aluminum fan with a 1 way bearing in it...

use the starter shaft from a rapter....

Then you can use a drill motor to start...works like a champ.

It's OK....It's not your fault !!!

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02-11-2008 09:59 PM  10 years agoPost 9
Dilbeck

rrElite Veteran

Springdale Arkansas

My Posts: All  Forum  Topic

Thanks to all it now starts with a 2 second burst of the dwalt drill. I was just leaving it on to long and flooding it i think.

Clint

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