w8ye

My Feedback: (16)

The fins would be black before long?

abufletcher

Maybe, but it seems just to be a variation from one photo to another. The small photo on the UMS site (and they REALLY need some better product photography!) shows the stacks facing rearward. But the "better photo" found on the HK site shows them facing forward. I can't imagine it really matters much one way or another where the exhaust is vented in the case of a round WWI style cowl. On the other hand, you wouldn't want to see puffs of exhaust coming out the FRONT of the cowl as the model was flying!

abufletcher

No more so than on any normal natural metal model engine. It's going to get a bit grimy, that's natural, but on a 4-stroke it's more likely to be burnt oil that leaves a residue. And the Seidlels run with little or even no oil. So I wouldn't expect the cylinders to darken much with use. Incidentally, most WWI engines used castor oil and burnt castor oil looks more yellowish.

Another fact about the "myth" of grimy, black WWI engines is that most of these engines had a service life about less that 20 flying hours before they needed to be removed from the aircraft and given a complete overhaul (with many parts being replaced). Can you imagine having to do that with out model engines! [X(] So in most cases, the engines are going to be pretty clean.

redball8

My Feedback: (128)

And I thought the exhaust stacks on the Seidels were positioned that way (forward) strictly for shipping, to make a smaller package less likely to get damaged.

abufletcher

That makes a lot of sense. Anyway, are we all agreed that the stacks are adjustable?

w8ye

My Feedback: (16)

I was looking at the sequence of pictures on the Hobby king site and the exhausts were turned both ways in the different pictures

redball8

My Feedback: (128)

They're a flanged steel tube with a nut (~12mm?), like the original old OS four-strokes.

Kmot

My Feedback: (24)

Anyone who has run a multi-cylinder four stroke glow engine I don't think would have the exhaust pointed at the rocker arms or any other component for very long!

Maxam

My Feedback: (62)

Holy toledo!!!, Hobby King got in 19 7-70 seidels....Trimotor anyone??

Dad_Roman

Looked like they were ordering a dozen.

Now it looks like they are ordering 2 dozen at a time.

Guess they will be carrying them for a while eh?

Wonder where the saturation point is?

77chickenhawk

I know I want at-least one of each [sm=teeth_smile.gif]

but the bad boy i'm waiting for is the gas Sedel 160cc 7 cylinder coming out any time. it has a smaller diameter than the Moki 150 ( i think 9 1/2 or 9 1/4 )

but along with that I would love to have atleast one 7-70 and one 9-90

w8ye

My Feedback: (16)

Now we know who has the money?

77chickenhawk

ohh i only wish i had the money.. Im dreaming as of now but am hopping to get a 7-70 first on the list. only sucky part is, the list is only a wish list...lol

abufletcher

I wouldn't think so either. But would you imagine that the UMS Seidels will at least hold their value fairly well relative to other used engines? So for example would you imagine that a Seidel purchased for $1200 today would be worth, say, $800 five years from now (in the sense of someone willingly paying that amount)? Assuming it's still in good condition. Looking at the opposite end of the engine market, I don't imagine a used Magnum engine would be worth more than maybe 30% of it's original value after 5 years. I think all the radials (being someone unique) will hold value better. And I think "specialist" engines like the Lasers, will hold value.

Here's a similar case from my other hobby. About 8 years ago I bought a Leica camera for about the same price as the Seidel 770. Today, I'm pretty sure I can get back at least 80% of that price. That means I paid 20% for the pleasure of having this camera for the last 8 years. Seen like this, buy a Seidel looks like a good choice.

abufletcher

And of course if I choose to keep it AND USE IT IN MODELS forever, then it would also be well worth the money. But if it ends up just sitting in a cabinet (as is the case with my Leica) then it's better to sell it.

fredo

Just wondering, has anybody ever ordered anything from SLengines? The prices seems to be too good to be true. Their radials look like a work of art. I'd loved to give it a go but I'm not sure if I shouldn't rather go for more trusted places since I don't know anything about them, neither I heard any comments from other people nor read about any reviews. What are your opinions?

w8ye

My Feedback: (16)

Their web site doesn't set any records for completeness as the contact info only has a Email and a phone number. He doesn't live anywhere?

Plan, 12, Italy and links to network IP 93.95.217.12.


He's posted a lot here

http://www.rcuniverse.com/community/...1&memid=517146

Spalla in Treviso AZ Italy

San Mauro Torinese

fredo

Yeah, he was posting in order to promote their new engine which is fair enough. I hate to sound negative but sadly I got burnt once before with a different company where I sent the money and never saw the product.[:@] I just hope I'm wrong. It looks like they are new on this market and one could understand a lot of things hasn't been set up yet. If I could only talk to someone who has purchased from them already that might change my view.

SOUTHERNX

Hi Fredo,I have just had a long and harrowing experience trying to buy a Seidel 250 petrol(gas) radial fromSwift Models in England.The problem was they had no ignitions for these engines,which were originally buily in Germany,and UMSin India are still working on them.After more than 3 months I asked(and received) a refund.Another problem is the engine shown on both Swift and UMS websites shows black cylinders and an exhaust ring,as per the German built engine,but the current engine being sold has neither, no exhaust ring is a big problem in a cowled aircraft, eaven more so with an engine this size.Inmy case it may be better to spend the extra $1000 or so dollars and buy a Moki whichhas all and more of thesefeatures and proven trackrecord,Mark.

[email protected]

My Feedback: (1)

I recently ordered  a seidel engine from SLengines but ended up buying  an SL 90cc engine. The motor is beautiful , Luigi was very helpful, answered emails promptly, sent some extra parts and a glow driver at a good price.  I received the motor 20 days after it was shipped.  I haven't run it yet, I'm in the process of setting it up.      Don

S.L.engines

We thank you for the compliments I hope you're into account the product but will not be built by SL engines and therefore destined to become a very rare engine over time. There are many around.
The SLengines is dressing one another and form and become S.L. engines headed by two partners. So the production was moved to another area very competitive for the construction of the engines. Where products are currently the best Italian engines.
I hope I have recommended the best.
I'm always here with you any problems.
Our goal from now on and do so only on gasoline but with displacements starting from 100cc. that are still under study. And instead of the available 150cc gas.


Greetings to you all



S.L.engines

Teus

Why not starting at the popular 60-70cc range?

S.L.engines

Why make an engine of that size and capacity and not on gasoline. the weight of electronic ignition coil is too high ..
We have already tried ..... the minimum and 100 cc and perhaps we have not the power to weight ratio ...

Good flying to all ..

SL engines

77chickenhawk

I would like to see and be able to buy a engine with with the diameter of approx 200 to 240 mm range . or basically two sedel 7-70's stuck together. and another one i would buy is a double row 70 cc er. basically two sedel 7-35;s stuck together.

lots of displacement in a small area...huh? throw a scale prop for sure!! gass or glow, i would want it. preferably gas. as small as electronics are these days and you can now get micro sized spark plugs for gas. run duel hall sensors off the back of the crank , one for front bank and other for rear bank... the saito guys are using a spark plug that is the same size as the glow plugs in there new gassers. use magnesium and titanium metals in the engine for added strength and lighter weights.. besides radial engine planes need the nose weight...lol

abufletcher

Seidel 7-70 diameter = 235mm