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Nov 16, 2012, 09:07 PM
world's slowest builder
Air-Jon's Avatar
Steve...the DS94 has a 4 blade stator...forget the twisty heat sink features...get real.
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Nov 16, 2012, 09:08 PM
world's slowest builder
Air-Jon's Avatar
Just do it right QQheaD...not cheap. Don't let Russians down...think SU-27....not Yugo. Your fan is beautiful...now back it up!
Nov 16, 2012, 09:11 PM
Registered User
erh7771's Avatar
Quote:
Originally Posted by Air-Jon
l…NOT! How many people lost motors, time and planes due to CS12 90mm failures? ...
8 out of 3200 units...that was the last count iirc

Quote:
....(yet it will be marketed and evangelized by people like you as close to equal or superior) ..
Please link and quote me touting anything superior to any brand of anything ..

If you can't do such I'd like you to take this statement back.

Thank you

Quote:
... A Dynamax with the proper motor can come within 5% of a DS94HST looking at Thrust/watt.
I have not seen this in a multitude of test.

regards
Nov 16, 2012, 09:55 PM
world's slowest builder
Air-Jon's Avatar
That is 8 failures on RC Groups out of about 20 people who are flying and reporting them on RC Groups. That sample leads me to believe about 40% of the CS fans fail...the stats are worse for the CS120...with at least as many failures as successes reported on RCG.

"Please link and quote me touting anything superior to any brand of anything ..
If you can't do such I'd like you to take this statement back.
Thank you"

https://www.rcgroups.com/forums/show...&postcount=778

Seriously!...u would recommed someone put the fan with the highest failure rate on the market into $3000+ jet????
You support and promote the use of cheap copies that have high failure rates. you present them as equal value to others asking you advice...even though you know better. This is your right...but i also have the right to question this guys fan...as this cheap fan thing is a bad trend IMO. He should be able to defend his product.

DS94HST 700, 12s peak watts 6600, 22.4 lbs thrust, 294w/lb thrust
Tams Dynamax, 12s, HET 800-68-685, peak 5990 watts, 19.0lbs thrust, 315w/lb thrust, so sorry 6% difference in watts per lb of thrust
Last edited by Air-Jon; Nov 16, 2012 at 10:04 PM.
Nov 16, 2012, 10:05 PM
Registered User
4stripes's Avatar
Very impressive fan!
You seem to be on the right track and have a very reasonably priced product.
Cheers
Nov 16, 2012, 10:06 PM
Registered User
erh7771's Avatar
Quote:
Originally Posted by Air-Jon
That is 8 failures on RC Groups out of about 20 people who are flying and reporting them on RC Groups. That sample leads me to believe about 40% of the CS fans fail...the stats are worse for the CS120...with at least as many failures as successes reported on RCG.

"Please link and quote me touting anything superior to any brand of anything ..
If you can't do such I'd like you to take this statement back.
Thank you"

https://www.rcgroups.com/forums/show...&postcount=778

You support and promote the use of cheap copies that have high failure rates. you present them as equal value to others asking you advice...even though you know better. This is your right...but i also have the right to question this guys fan...as this cheap fan thing is a bad trend IMO. He should be able to defend his product.

DS94HST 700, 12s peak watts 6600, 22.4 lbs thrust, 294w/lb thrust
Tams Dynamax, 12s, HET 800-68-685, peak 5990 watts, 19.0lbs thrust, 315w/lb thrust, so sorry 6% difference in watts per lb of thrust
There's nothing in that link you posted where I'm saying one product is superior to another.

If you can't back up your claim about me then you should take it back, most sane people and adults deal in facts ....the other crap and obfuscations are BS

I do notice a lot on these fan threads there is a person who comes on goads others by making false claims about them and poo pooing on a persons work.

A lot of times it's to derail the thread.

Please PM me with the link and other comments

regards
Last edited by erh7771; Nov 16, 2012 at 10:15 PM.
Nov 16, 2012, 10:22 PM
world's slowest builder
Air-Jon's Avatar
erh7771 I was challenging the author not you. I believe my point about cheap copies and lack of quality is valid. You made the connection to the car industry to invalidate my point...where quality and value still drive the market. Let the author defend his product. You have nothing to lose by me questioning the author.
Nov 16, 2012, 10:23 PM
world's slowest builder
Air-Jon's Avatar
and i said equal or superior
Nov 17, 2012, 03:55 AM
Registered User
Guys, this is my hobby. I can not do a lot of EDF. I'm not going to make money on this, the price is only needed to support my hobby. I really hope that I get a good performance and I will be glad if my EDF will stand on your jets.
Nov 17, 2012, 06:49 AM
EDF Jet Jam 2017, June 15-18
Kevin Cox's Avatar
Quote:
Originally Posted by QQHeaD
Guys, this is my hobby. I can not do a lot of EDF. I'm not going to make money on this, the price is only needed to support my hobby. I really hope that I get a good performance and I will be glad if my EDF will stand on your jets.
Great work QQHeaD. I am impressed with your skill, the fan looks great...best of luck. I didn't see any cooling holes on the mounting plate. Are they to be added later?
Nov 17, 2012, 06:58 AM
Registered User
Quote:
Originally Posted by Kevin Cox
I didn't see any cooling holes on the mounting plate. Are they to be added later?
Yes, I'll do it after the test.
Nov 17, 2012, 12:41 PM
Zen in the art of foam
djacob7's Avatar
QQHead: Very impressive workmanship!
I suggest that you test it under more severe conditions than anyone would use it. Higher KV and higher RPM. At least 120% higher for a safety factor.
Nov 17, 2012, 01:12 PM
I did it...
av8ersteve's Avatar
GOOD GRIEF, how some are so quick to judge, criticize, and destroy. Beats all I've ever seen. QQHead, i'm really interested in the numbers so please don't give up. Some of us want to know. Your fan looks great!
Last edited by av8ersteve; Nov 17, 2012 at 09:13 PM.
Nov 17, 2012, 04:37 PM
Registered User
We all could use a new fan on the market specaly for his price point. ive oned some of the best fans on the market and payed 1000$ plus for them. its nice to see somone trying to make somthing nice. keep up the good work Ill be watching closeley
Nov 17, 2012, 05:35 PM
Registered User
I don't know about you guys but If it was me that made that CF fan from scratch, I would be very proud of my final product. I would also expect positive comments and constructive criticism, but it looks like now adays any one who makes a fan that has more than 10 blades is a fraud and a copy cat.

Funny thing is if this guy would have made a 6 blade fan, everyone would be OK with it.


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