Mein Duff

Seidel was the original German company who had been making these for what 10-12 years?...Evolutions are now producd in India...they must hav bough the patent rights and the machinery I imagine to produce them.

abufletcher

It's not that they "run great" on 5% oil, it's that since they operate at lower RPMs and the the fuel has to be 99% methonol with no nitro, the engine operates at a much lower temperature so not much oil is needed.

Mein Duff

Does anybody know if Microsens in Germany still exits?.. tried to email them but my email bounced back.... humm... not a good sign..
Or could what alternatives do I have for my 7-70 Seidel??
Thanks guys...

RBACONS

My Feedback: (3)

A friend of mine who has had 2 siedel 7-70's for 15 years or so just runs an 7000mah F cell. + wire from the battery runs to a brass plate glued across the top of the body of a standard servo. A second brass plate is screwed to the servo arm and runs a + wire up to the bundle of 7 plug wires. The servo is switch activated so he can turn on or off juice to the plugs. With a decent computer radio I think you can also mix it to have the servo throw at low throttle as well. He's never had a glitching problem when the contacts are thrown nor has he ever had the system fail. Just use a heavy guage wire like 16 ga.

Mein Duff

Very interesting... thanks Rbacons

abufletcher

Microsens' website seems to still be there:

http://www.microsens.at/shopping/ind...5caa495b632e8b

Pull Up Now!

My Feedback: (3)

Which is why guys flying huge models, like a Balsa USA 1/3 Scale Pup, with a prop reduction unit can fly around fine with scale propellers.

Spuetz

Hello Mein Duff,

may be you can't contact Microsens because they are NOTa German company? they are Austrian...
here's Peter Klementschitz' contact page:
http://www.microsens.at/kontakt.htm
His Phone number is: +43 (34 52) 76 3 14-0

I flew my Aero again last Weekend - beautiful. HoweverI noticed some vibration on idle. As I wanted to check glow plugs, valves etc. I took the cowling off only to find that I lost one of the three bolts that hold the engine in place. Further inspection showed that I had lost another one on the backside of the fire wall. In effect the engine was hangin on ONEBOLT!!! Well not quite true: It was also hanging onto the collector ring (seven points) whicht is bolted to the fire wall on four points. That alone would have been enough to keep the engine in place. But anyhow, kind of a shock.
Learning:never get too comfortable with a well running system - do your regular checks!

Cheers, Martin

rcten

Microsens is alive and well, received an order from them back in Sept.
Their email add. is: [email protected] and web site: www.Microsens.at/home1e.htm

abufletcher

Better late than never. [:-] I just placed my order for the GLOW7LP and the GLOW BALANCER: 118 Euros shipped to Japan. [X(] Luckily the yen's still strong.

Mein Duff

Ahhh ....Ich Dumbkopf... I was sending to " [email protected]".....

I'm sure it will go through this time...thanks

Mein Duff

Has anybody tried out the Sullivan Glo system for multi cylinder engines?

Any comparison to Microsens?

Mein Duff

oops heres the link to sullivan glo..

http://www.hobbyking.com/hobbyking/s..._Engines_.html

abufletcher

To me, it looks crude by comparison, and those plug caps would be ugly let alone not fit in a cowl. Also I can't find any mention of a 7-cylinder version (only 3, 4 and 5). And it's not particularly cheap either. BTW, did you engine come with a set of glow cables? And since you can't use the GLOW BALANCER with it, you have to manually deal with the odd cylinder problem and the uneven heat of lower cylinders with the GLOW BALANCER automatically adjusts.

Here's a key page in this long thread that discussed the setup issues. Unfortunately, RCU has wiped out all the imagines. But Martin's useful explanations to my boneheaded questions are still there.

http://www.rcuniverse.com/forum/m_98...21/key_/tm.htm

At the bottom of that page, Bob mentions using a 7-cylinder glow system by Sonic Tronic:

http://sonictronics.com/xcart/produc...cat=308&page=1

rcten

Hi, yes I have, as a matter of fact I have 3cyl, 5cyl, a 7cyl, and 9cyl unit they work fine,can be set to work with the throttle position or a switch , I also have a 7 and 9cyl Microsens with the balance unit. The reason I am trying Microsens is physical size (they are much more compact) and the fact I can use a 5amp 3.7 lipo for power.The problem with the Sullivan unit is it will only work with 4.8, which is OK for the 3cyls, a 1400 nicad pack is fine but the 7 and 9 require a 3000+ mah pack.The nimh, nicad.,I have tried or used don't seem to hold up very long. The 7cyl draws 7 to 8 amps and the 9cyl draws 9 to 10 amps. I even used a voltage reg. so I could use a 7.4 lipo which worked fine,(Sullivan doesn't recommend this) but more items in the loop to go wrong.

abufletcher

The GLOW 7 LP and GLOW BALANCER from Microsens arrived (from Austria to Japan) today, a little less than three weeks after I ordered it. Oh, boy!

Mein Duff

Glad you got yours... Now that I know they have them in stock I will order mine....hope it works out well for you.

abufletcher

Now that I have the GLOW 7 LP and GLOW BALANCER in my hands I've been re-reading Spuetz' kind and patient explanations from many moons ago:

http://www.rcuniverse.com/forum/m_98...21/key_/tm.htm

Finally, I think I get how everything is connected to everything else:

1. The GLOW 7 LP is connected to the Rx via a built-in standard connector using either a Y-cable on the Throttle channel or on a separate slaved channel.
2. The GLOW 7 LP is connected to the GLOW BALANCER via two yellow wires with a male MPX plug.
3. The ends of the seven individual glow plug cables (which need to be unbundled) go into the numbered slots on the GLOW BALANCER.
4. The battery for the on-board glow is connect to the GLOW 7 LP via a dean's plug connection (with the extra connector for the battery provided).

So I think I can get it all set up on my test stand. For it to work though, you need to run through a "auto-programming" sequence with the Tx...which I still need to wrap my head around. (Some of the English translations in the instructions are a bit funky.)

abufletcher

Hmmm...still some confusion. [:-] The instructions state: "You can use either 3 NiCd/NiMH cells or 1 LiPo cell, the cell number is detected automatically."

OK, fine. That sounds like I can't use the 5-cell 6V 2000mAh NiMH pack I had bought to run the glow system. Spuetz recommended getting the biggest battery I could get stating: "In my Nieuport I have two 2-cell, 1000 mAh receiver batteries and the 6400 1 cell Glow battery..."

A 1-cell 6400 battery? I don't even know what that is. [X(]

*****

Ah. LiPo. And another 60 or so Euros.

http://www.microsens.at/shopping/ind...5_BATTERY.html

Spuetz

Hello Don,

no, you can't. Unless you take it apart and make a 3 cell battery from it. However you would end up with only 2000 mAh - not very much.
I reccomend using Lipos. Now you're right, I don't think they make single cells with 6000 mAh yet. However, microsens offers "parallel packs". They are in effect made from several cells - eg. 4 cells. However, they are not soldered together in line as per "normal" packs, but rather paralelly. That means: all plus poles of the cells together and all minus poles together. That gives you 3.7 volt and the capacity of each cell TIMES the number of cells. e.g.: 4 cells, each with a capacity of 1500 mAh, soldered together parallely, gives you a 3,7 V, 6000 mAh battery. If you soldered them together in the "usual" way, that is minus of one cell to plus of the next and so on, you would have 14,8V and 1500 mAh capacity.
remember:
in-line adds up theVolts
parallel adds up the capacity.

by the way, if youcan get a hold of single cells - eg. four single 1500cell, soldering them together is very easy. just stack them, so all plus poles are on top of each other and all minus poles on the other side on top of each other. Solder themtogether and attacha cable.Bingo.And since you arealready putting them together paralelly, no balancing is needed. You can treat that pack asthough it was just one cell. makescharging very easy.

However, I have the feeling that Ihave written that somewhere before in this thread, I believe with diagrams. If so, please excuse my repeating myself...
Cheers, Martin

abufletcher

Bummer. Maybe a clubmate as a suitable LiPo I can borrow to get my system up and running.

I wonder if anyplace in Japan sells parallel packs.

I think it was on the same page (of this thread) that I linked to above. I do now get the idea of inline vs. parallel so I guess I'm making some progress.

rcten

HobbyKing sells 1S2P 5000mah 50C nano-tech lipos, I have 2 , one for each 7 and 9 cyl radials using microsens glow drivers and they work fine.

abufletcher

They have like a gazillion batteries and I can't seem to find exactly the one you mention. []

*****

Is this the one?

http://www.hobbyking.com/hobbyking/s...APPROVED_.html

It would sure be nice to have a battery with a dean's plug already installed. Also what's the deal with "hardcase" LiPos. Never heard of that.

Steve Percifield

My Feedback: (14)

hard case lipos are for the cars guys where they bash them a lot. It's just crash protection

rcten

Yes, that's the one.

http://www.hobbyking.com/hobbyking/s...APPROVED_.html