anybody know who makes engine syncronizers other than Jomar

Try Mini Hobby, ATL in Florida...

http://www.minihobby.com/products.htm

Are Jomar still in business? I've tried e-mail, fax and phone to contact them as I was wanting their engine syncroniser after reading a review of it but I could not get a reply.
Have you followed up the Minihobby product - I would be interested in knowing what you thought of it.

Goosey

I found the link for Jomar:www.emsjomar.com
So I guess their still in business.
I haven't tried any syncronizers yet, just looking for options.
As for Minihobby I couldn't find a syncronizer on their web site.


thanks
Tail rotor

T/R....Just curious what your going to use the eng. synchs on?.......Bill........

I'm not sure why you are hesitant to try the JOMAR system. I have use it on a twin and I liked it a lot. The next twin I build will have the system. Right now the only twin I have thought about is the Dragon Rapid drawn by Switzer. I think has passed away recently. I still would like to get his glass cowls and other goodies he offered.
Sparky

Try this one for minihobby.

http://www.minihobby.com/

John

warbirdz1
i am building a Nosen 310


elmshoot
not hesitant, just want to see what else there is.

crashnfix
still can't find syncronizer. I did find the Minihobby twin,it is not a syncronizer

thanks
tail rotor

Gentlemen......Are you using synchronizers with Gas or Glow engines....have flown twins for a number of years and haven't seen much benefit from them....maybe you can give some feedback.....I use all Gassers and they are "usually" within a couple hundred RPM thru-out Rpm range.....I like simplicity and I dont like adding components unless theres a reasonable benefit from them.....In process of Painting/Finishing 102" B-25 #2 .....First one lost #1 engine and "Immediately" (If not sooner)......snapped inverted......pulled power in #2 eng back to idle, rolled it back over and lowered nose to pick up some speed....was able to land unfortunately it was on a rock pile causing extensive damage.......would really like to add telemetry to see engine RPM at all times...might be only way to avoid engine out nightmares.....If throttle(s) are retarded before engine quits ...chances are much higher for recovery......I have seen 5 or 6 B-25's lose an engine and all of them returned to"KIT" form.....including one with a gyro....still wouldn't fly on one.........Bill..... i

If the plane is under powered with one engine out it won't stay in the air very long. There is no sure method, but bigger power plants throttled back will fly the aircraft and incase of engine out extra power is available to keep plane in the air with some control.

Bill,
Sounds like you are persistant. There was a system that instaed of keeping the engines synced it would monitor engine rpm and when it sensed a big RPM diferential it would cut the power on the good engine and throw a preset amount of rudder in to off set the yaw that might have developed from the engine failure.

Once you have heard a sync system that keeps the engines in harmony you won't make such statements. It isn't very complex and well worth the money and complexity which isn't much to install.
Sparky

Hi
At RC show case the have a what they call Twin sync have you ever heard of it ?

E-male address is rcshow case .com would you guys mind haveing a look at this .

Michel ( Mike )[8D]

Guys,

I am really surprised by this thread!!! It almost sounds like some one is playing a straight guy for me...Oh well- I guess my marketing department needs replacing.... and "Yes" there is one available.

http://www.rcshowcase.com/html/acces.../twinsync.html

Although, I will add there are magazine articles and reviews in the works and you will probably hear about it pretty soon - so I shouldn't complain.

I developed a sync unit this summer that is being distributed by RC Showcase that is not a master-slave unit and is a true syncronizer. It is programmable to the point you can make it do almost anything you want including automatic idle on a failing engine or defeat by AUX channel or dead engine. It obviously needs more press at this point I guess.

I even have a four engine unit ready for field testing that could be expanded to a eight+ engine unit easily incase anyone has a "spuce goose" laying arround.

I have debated with a number of very well respected people about the benefit of an electronic sync unit. The bottom line is the following:
1. (Novice) If you are new to multi-engines this device can allow you to fly a twin that would otherwise be unstable or unsafe in the event of a dead engine.
2. (Sport/Intermediate) If you have twins this device, let's you get the most out of them while freeing up channels and mixes for other features/functions and get the best sound out of them. Secondly, take offs are easy since your twin goes down the center of the runway rather than yawing with engine thrust difference. Thirdly, the setup/programming time can be greatly reduced.
3. (Expert) If you are an expert or compitition pilot with twins I can program the sync RPM in the unit to be closer than your servos and carbs can handle to the point that you can get that perfect sound at all throttle settings all the time. Nothing sounds better than being perfectly synced at all times.

Check out these links also:

http://www.rcuniverse.com/forum/m_4700596/tm.htm

http://www.rcuniverse.com/forum/m_4211050/tm.htm


Bill

On your system-Where do you install your magnets if you are using a flat backed spinner?-Your system operates by the theory of the Hall Effect is that correct?-thanks

i will give a thumbs up for the "twin sync" i have one on my p-38

I have three TwinSync units. Both thumbs up.

Bill.

Flat backed spinners are the best. Drill a 3/16" x 1/16" deep hole in the spinner (not all of the way through) and epoxy the magnets in the hole.