ZDZ 210 is two noisy?

[martin18152]

I have a problem; I belong to a flying club that will not let you fly your plane if it has a Db level higher than 95, measured at 25 feet. I have a COMP ARF Yak 55sp 3.1 meter, ZDZ 210, KS1090 pipes, 3 blade 31 x 12 Mejzlik prop. I aspire to fly it 3-d. Is there anything that I can do to lower the Db level, and still maintain good 3-d performance? The plane is a great performer as is, I hate to mess it up trying to put different prop that could possibly reduce the noise. I looked around, and I really don’t see any prop that is larger, or with more pitch that’s off the shelf. Anyone have any good Ideas? other than join another club, or reduce your ATVs for the test, I already have that idea on the back burner.

[Biff]

Martin, good question! One of the easiest ways to pass a noise test with the set up you have is directing the exhaust away from the meter. Some clubs allow this as static noise testing isn't real world stuff. Simply point the exit tubes to the right and measure from the left. I'm sure there's Giants members with more experience with the 210 as far as prop combinations. Andy Kane is one of the folks I would contact before spending money on an experimental prop. He's been flying 210's for quite a long time and has some awesome combinations. I flew his 210 powered Yak in Danville. Pulled like a John Deere and was uber quiet. Hope that helps!

[Chris Puckett]

Martin what DB are you reading now.

[xtreem3d]

chris ,
i believe mark tested at something like 102 but his plane has the most pleasing sound in the air of all of ours that got tested,
steve

[Flyinrazrback]

3w makes a good carbon 3 blade 3d prop, its 31.5x8x14. They also make a 32x12 3 blade, and so does Fuchs.

[aviti]

I know the Yak/ZDZ in question and can't believe it reads 102. I guess you rarely go to full throttle though. Just fly at Buder rather than the club field....

[Greyhoundman]

Easy fix......Join one of our St. Charles clubs we don't care about noise.

[JagerBomb]

Martin,
SLRC is looking for a reason to ban large planes. They have made it clear in the past they want nothing to do with 3D. Even though the JETS don't even come close to 95DB they are allowed to fly without even being tested. A jet was tested at 105db but the club said that the noise was unobjectionable. There are many good clubs in the St Louis area that have a good vibe and are very tolerant of all planes. I very rarely get into anything negative but, I've been treated so rudely at SLRC I wouldn't fly there if they paid me. I know you don't want to hear it but I would look for somewhere else to fly. After all, this hobby is to have fun and relax, not to be persecuted by a narrow minded few. I'm off the soapbox!

[Stu_D]

Join three clubs in total , each week fly at a different club .
When the fun police are chasing you the following week
you will not be there .

I have been doing this for a while now and has worked very well .
That being said I have found a club that now welcoms me every
time . Its not the Db its the members , prove it by the ATV method
and I bet the complaints will not stop . We have all been through this.

Stu D

[aviti]

Mark and Greyhoundman - Which clubs in St Charles do you fly at? I fly at Buder Park but its crowded on weekends so I'm looking for a 3D friendly club to fly at. I flew at the field in St Charles right by 370 (forget the name of the club). It was very nice and hardly anyone there. I flew as a guest but I believe I was told they don't have open membership.

[Cracky]

Thats the Saints field.....I too neeed to get on that waiting list.

[martin18152]

My plane tested at 98 db on the ground. I hardly ever fly at full throttle; this plane will hover at less than half throttle. I don’t really want to flame the club, they are doing what they think will save the club, in my opinion they are going about it the wrong way, and maybe there is a little 3-d animosity (not more than any other club). I don’t think the 95 db will appease the person behind the problem, it will continue, regardless, I guess they have to do something in good faith.

I am looking at other clubs, I live in Imperial MO, distance, and field condition is considerations. St. Luis Buder is a great field, but I get a little paranoid about my plane, when trainers start crashing in the pits on a regular basis, not worried about myself, I can run, lol. St. Louis RC is one of the best in my opinion, it’s a shame we have this problem.

I like the field up in Roxana IL., it’s a bit of a trip, but my wife has family up there, and I go up there all the time.

With this post, I’m just trying to validate that my plane set up is about as good as you can get it with performance and noise. When you already have about 500 dollars in pipes, and 180 dollars for a prop, you really don’t want to spend any more, and still fail, its cheaper to join another club.