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HelicopterRadio - Servo - Gyro - Gov - Batt › Helitronics Wireless RF Tachometer
04-01-2005 05:57 AM  13 years agoPost 1
drmgcm

rrApprentice

Anywhere

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Okay guys and girls of the RC heli world, I just wanted to share an exhilarating experience that I had today. Now I have tried many different
Types of rotor tachs that have been on the market over the years, and as
Most if not all of you know this tends to be mainly a two-person affair
With the exception of one or two out there. However today I tried something
Totally different, it’s a wireless RF tachometer made by Helitronics.

Now this piece of gear is amazing and did one hell of a quick job at letting me correctly and accurately calibrate my rotor head speed on my Raptor 50v2.
Now for those that have a Governor on your heli then the set up is easy, as
You just feed your governor sensor to the Tach txer and governor using a
Y cable. If you don’t have a governor then the tach comes supplied with an
Optical sensor, which is very simple and quick to install.

Anyhow on to my results using this tach, after a little pondering how to
Mount the rxer onto my 9CHP I did come up with a quick and easy solution,
(Check my gallery out on the 04/04/05 for a pic) which made it so easy to
fly my heli and just glance down at the read out, whilst adjusting my Throttle
Jockey Pro Atv’s up or down to get my target head speed.

Okay so I wanted my low head speed at 1750 and my high at 1950, well what
I can tell you is my original settings taken by various tachs in the past,
were so far off it was frightening. Anyhow within minutes I had my low down
to 1748rpm and my high speed up to 1954rpm, I then became very aware of the difference in the helis performance.

Whilst using the tach I found that it was much easier to tune the top end
Needle for optimum mixture, there by immediately noticing the effect
On the engine performance. This really became apparent at 1954rpm (were
I do most if not all my flying), as the CY MPII which I thought I had
Running well really did tune in so much better that the power and torque
From the engine increased to such a degree that I could feel the difference
In the helis performance. My GY401 and 9254 setup became even more solid than
I have ever seen it before, and the engine seemed so much more sweeter and
Wanted to give me more power when I asked for it.

All in all I have to say that this is one if not the best pieces of RC heli
Gear I have ever had the pleasure of owning and using, and to top it all off
Once I had my target head speeds sorted out the way I wanted them, I could just
Unplug the RF tach txer and have my electronics back to normal in less than a
Minute.

So in conclusion I have to say my flying was the best it has ever been today, and I came home on a real adrenalin rush.

Regards

Dmac

IRCHA: 2528 AMA: 849513 R50V2, OS 50 Hyper, MPII, GY601, TJPro, 9CHP & Cool Power 30%

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04-01-2005 06:13 AM  13 years agoPost 2
jkelly

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Bedford, PA

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So, what are you trying to say?


Jusk Kidding, sounds cool!

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04-01-2005 06:26 AM  13 years agoPost 3
JKos

rrProfessor

Redondo Beach, CA

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You could at least tell us where to get more info and/or order this product. The only link for Helitronics I can find is invalid (http://helitronics.tripod.com/ to be specific).

How much is it?

Thanks,
John

RR rules!

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04-01-2005 06:29 AM  13 years agoPost 4
JKos

rrProfessor

Redondo Beach, CA

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Ah ha, found it. It is Helitronix with an 'x', not 'cs'. http://www.helitronix.com/

Hmm, and only $225.

- John

RR rules!

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04-01-2005 06:51 AM  13 years agoPost 5
drmgcm

rrApprentice

Anywhere

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lol yep sorry fooled ya, Helitronix, my appologies, yer but it's the best money
i have spent on my whole setup, in a while.

Dmac

IRCHA: 2528 AMA: 849513 R50V2, OS 50 Hyper, MPII, GY601, TJPro, 9CHP & Cool Power 30%

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04-01-2005 02:37 PM  13 years agoPost 6
drmgcm

rrApprentice

Anywhere

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I meant to mention although this is just a tach albeit a wireless one, it doesn't improve the helis performance in it's own right, it mearly aided me very quickly very accurately and on my own to set the helis engine up so that it would perform the way i wanted it to perform. This is something i have been striving to do in the past, and i have succeeded however it was alot slower process and sometimes a little hit and miss, but using this i don't think you could fail.

Anyhow i went back out flying this morning and totally had a blast, it's amazing
how different your flying becomes when your machine is setup the way you want it to be, and this certainly helped me no end.

Regards


Dmac

IRCHA: 2528 AMA: 849513 R50V2, OS 50 Hyper, MPII, GY601, TJPro, 9CHP & Cool Power 30%

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04-01-2005 04:25 PM  13 years agoPost 7
drmgcm

rrApprentice

Anywhere

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((Quote))" Just to keep things in perspective. I have tached using both Miniature Aircraft and MA optical units then compared to the GV-1 target in the GV-1 display and they both agreed with GV-1 and each other. I find both these products very accurate.

Now if you don't know how to use a tool properly then things will be less than accurate."

Now please lets not start a slanging war here, I merely expressed an opinion on something I bought and used, and felt I should tell people about it. If you read my post you would have seen that I am using a TJPro, which does not
have a read out display like the GV-1, so I could not compare tachs that I had used in the past. On top of that tell me something, do you actually fly your own heli and use the above mentioned tachs whilst flying, If so you have more hands than I do, so basically you have to trust who ever takes the reading for you. Like I mentioned using the tach I have meant that I could do the whole operation on my own very quickly.

Which ever the case, I have used the above mentioned tachs and used them correctly, all I was stating was that I found my present one to be more accurate, and allowed me to set up my engine a lot easier and with better results.

And for your information NO this is not an advert for the tach, man can't some express an opinion about a product without being slated for it!!

Regards

Dmac

IRCHA: 2528 AMA: 849513 R50V2, OS 50 Hyper, MPII, GY601, TJPro, 9CHP & Cool Power 30%

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04-01-2005 05:30 PM  13 years agoPost 8
JKos

rrProfessor

Redondo Beach, CA

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The only safe time to look at the display of this Helitronix tach is when the heli is on the ground. The same can be done with the other tachs.

- John

RR rules!

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04-02-2005 02:46 AM  13 years agoPost 9
Joel Rosenzweig

rrVeteran

Marlborough, MA - USA

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If you mount the tachometer display module to your transmitter antenna at an appropriate height, then you can safely read the tachometer at a glance without serious difficulty. This is a one person activity. I suppose it might be a challenge for some. It depends on your skill level. That being said, someone else can always hold the display module for you and simply read it to you if you prefer.

There's no operator error with this tachometer because the operator doesn't have to do anything to take a reading. Unlike conventional tachometers that require you to match the shutter speed with a button so that the blades stop moving (which takes time) the radio tachometer is always displaying the current RPM. There's no lag, and no adjustment error.

The Miniature Aircraft tachometer is a fine piece of equipment. It makes similar RPM readings as the Helitronix Tachometer. Mine displays the RPM with single digit precision. The MA tachometer rounds readings to the nearest 10 rpm. This is not really an issue. I just had no reason to throw away the data and round it off.

I designed the tachometer for a niche market. I needed a way to tach multi-bladed rotor head systems. You can tach a 2 and 4 bladed head with the MA tach, but you can't tach a 3,5,7 bladed machine. The Helitronix tachometer can tach a rotor head with any number of blades. That's great for the scale helicopter guys like me.

Regards,
Joel-

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04-02-2005 03:04 AM  13 years agoPost 10
AGRAV8

rrProfessor

Mosquito Coast......Houston Texas

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Agreed, Joel !
and that is what makes it much more effective, the odd blade count ability.

Hey, I appreciate the guy coming out and expressing his satisfaction with a new item. Not only do I find my time limited, but my $$$$ seem to find places to evade me from as well lately. We all can get blasted out by MFG advertisements in print media, but an eval from someone that has spent HIS $$$ on a new item is probably more valuable to entice me to try it out or look for an application opportunity.

Joel, your products have a growing reputation for being good quality and well thought out. I'll be ordering a mixer in the very near future for a multi head test.

James

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04-02-2005 04:55 AM  13 years agoPost 11
Joel Rosenzweig

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Marlborough, MA - USA

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About Helitronix
I received an interesting letter today as a result of this thread. After reading about the Wireless RF Tachometer, one fellow enthusiast wrote to tell me that he liked the device but that he couldn't understand why it was priced so high and why it didn't include a case. He had some misconceptions about me and my company. I thought I'd take a moment to explain a little bit more about me and what I do.

Helitronix is a one person company that I operate in my spare time in the evenings and weekends after a full day of work at my day job. The day job pays the mortgage and all the other bills. Helitronix has been in operation for a little over 1 year now, and it profits just enough to continue to allow me to purchase parts for the next run of items that I build and start prototyping the next device that I'm dreaming about.

I have designed each item myself, spending many many hours developing, prototyping and designing each device. When I make a device that might have appeal to others, I have the option of offering it for sale. Somtimes, this is a viable option, and sometimes it doesn't make too much economic sense. It depends on the cost of the parts and the amount of my time needed to assemble and test each item.

I assemble and test each item by hand. The labor is my own. Every item I sell takes at least 1 hour to assemble and test. Some, like the RF Tachometer take 2 hours. When you consider that the item still needs to be put into a box, and I have to stand in line at the post office and wait in line like every other human so that I can mail it out to you, I'm into the order processing for almost 3 hours of my time.

I don't mind saying that the parts cost on the RF-Tachometer is very high. It now costs me $190 in parts to build just one unit. I sell the complete tachometer for $225. So, there's $35 in "profit" on the sale. In this case, I average 11 dollars an hour if you consider the time it takes me to ship it out the door. It makes zero financial sense to spend my time this way because I could earn almost as much working at the local fast food establishment with less of a challenge. The money on the sale is not the motivating factor to stay in business. Making something that others enjoy and keeping the whole thing self sufficient in that capacity is what keeps this effort alive. I get to feel like I am giving something back to the helicopter community this way.

My products are not mass produced. They are not assembled with child labor. Given the exceedingly low volumes, there is no economy of scale to benefit from. The reasons for keeping an item available for sale do not necessarily make economic sense. If I'm fortunate enough, I meet some fine people, we exchange some pleasant emails, and we enjoy our helicopters a little more with the items that I've created.

The products are what they are. Some people want a case on the tachometer. Some people don't seem to mind, or they can deal with it as is. I'd like a case too, but the tooling is expensive and I didn't think it was going to be a viable product at all if I had to incorporate my tooling expenses into the price of the finished product. Therefore, my products will be appealing to some and not others. That's really ok. I'm not trying to compete with major manufacturers. I'm just making some unique items at what I believe to be good prices that offer capabilities that no one else has, or has at my price point.

I have a passion for model helicopters and electronics. I've been flying helicopters since 1985. I found an interesting way to combine my love of both helicopters and electronics. I expect to continue to search for electronic items that I "need" for my helicopters and then create some of them. And then, I'll make a subset of those things available for sale to the general public.

You'll see me participating in the helicopter forums here and elsewhere because like you, this hobby is a passion for me. If I produce something that enhances the hobby for you, that's what it's all about. That's really all there is to it.

Regards,
Joel-

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04-05-2005 03:55 AM  13 years agoPost 12
toyman

rrNovice

forestville, ny

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Well said Joel.......your passion in this sport is appreciated....I just learned about your product from this post and know for certain I want the tach that is not RF....It meets my needs perfectly, as I plan on getting the REV MAX instead of Throttle Jockey, this onboard tach is just what the doctor ordered....I can't wait to have the extra cash to get one....

Thanks,
Keith

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04-05-2005 04:04 AM  13 years agoPost 13
Joel Rosenzweig

rrVeteran

Marlborough, MA - USA

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The Helitronix On-board tach
Thanks for your interest in the product. You'll have a good time with the on-board tach. It provides the same quality readout as the RF tach, but you'll have to land (or hover nearby) to take a look at your sampled reading. I have one permanently installed in my Lama just because I enjoy checking my rotor speed each flight. It gives me a great indication that the motor is running consistently from flight to flight.

Regards,
Joel-

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04-05-2005 05:17 AM  13 years agoPost 14
drmgcm

rrApprentice

Anywhere

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Just got back on the island and noticed all these replys to this thread, Hey thanks Joel for making many aspects clear in this post, and thanks to all that have replied. I'd like to think that the post made alot of people aware of what is out there, whether they try it or not

Regards

Dmac

IRCHA: 2528 AMA: 849513 R50V2, OS 50 Hyper, MPII, GY601, TJPro, 9CHP & Cool Power 30%

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05-07-2005 06:59 PM  12 years agoPost 15
dnam

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Herndon, VA - USA

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Yes, definitely thanks for posting! I just bought one due to this thread...

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05-11-2005 07:08 PM  12 years agoPost 16
gonzalom

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Northern California

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Joel is the BEST!!! we are lucky in this community to have people like Joel advancing the hobby with smart new electronics!!! for close to none of making profit. I bought from him several helitronix mixers to fly my multiblade and the service and support is the best I haver ever seen in this hobby.

Thanks Joel!!!

Gonzalo

P.S. Joel I need to talk to you to build a turbine fuel tank electronic measure device for 2-3 tanks...... any plans?

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