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Seidel 7-70 radial: Help me decide!

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Old 12-07-2010, 01:02 PM
  #351
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Default RE: Seidel 7-70 radial: Help me decide!

Spuetz,
Thanks for the tip. What kind of rpm are you getting with the two blade?
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Old 12-07-2010, 01:15 PM
  #352
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Default RE: Seidel 7-70 radial: Help me decide!

Hi Tom,
Mine is an old ST 770 and I get about 5200 with the 24/10 and 22/12 likewise. The newer ones should run faster... I have a Solo Prop on my Aero (photos and video couple posts back) I run 22 inch blades on that one and have it set to 12 inch pitch.
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Old 12-07-2010, 05:52 PM
  #353
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Default RE: Seidel 7-70 radial: Help me decide!

Thanks Spuetz,
I would love to run a Solo prop, as their curved tip blades look similar to the blade on the full-scale 190. Problem is, i can't justify spending $300 on a solo-prop, when i can get Four Biela Carbon fiber 3-bladed props for the cost of 1 solo prop.
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Old 12-07-2010, 06:27 PM
  #354
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Default RE: Seidel 7-70 radial: Help me decide!

Thomas.. I NEED my spinner and fan lol. I have a friend who MAY have on. If he does I'll ask if he's willing to part with it. I doubt he will but I'll ask.

And the Solo props are the Price of Glory!
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Old 12-07-2010, 06:30 PM
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Default RE: Seidel 7-70 radial: Help me decide!


Quote:
ORIGINAL: BobH

Thomas.. I NEED my spinner and fan lol. I have a friend who MAY have on. If he does I'll ask if he's willing to part with it. I doubt he will but I'll ask.

And the Solo props are the Price of Glory!
LoL bob, yea i need one to. And Sist isn't producing anything until their 1/4 scale 190 is brought to market (this coming spring supposedly). Sooo... i've got to find a fan so i can modify my cowling for the fan to fit before i start priming. Shoot, if i could just find one to borrow for a few weeks that's be great. but oh well. If your friend is willing, i dont mind paying a few extra $$$ for one.
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Old 12-07-2010, 07:46 PM
  #356
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Default RE: Seidel 7-70 radial: Help me decide!

Hey guys...who is this SIST company? is that their real name? can't find anything on google to help...do they have a line of model kits or ARFs?
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Old 12-07-2010, 10:56 PM
  #357
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Default RE: Seidel 7-70 radial: Help me decide!

Hi Thomas,

who do you need to justify it with?
Remember that when you nose the plane over, all you have to do is buy new blades...
But they are dear, those props, no doubt about that...

Cheers, Martin
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Old 12-08-2010, 12:23 AM
  #358
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Default RE: Seidel 7-70 radial: Help me decide!

Quote:
ORIGINAL: Spuetz
who do you need to justify it with?
The Ghost of Modeling Past?
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Old 12-08-2010, 04:05 AM
  #359
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Default RE: Seidel 7-70 radial: Help me decide!


Quote:
ORIGINAL: Spuetz

Hi Thomas,

who do you need to justify it with?
Remember that when you nose the plane over, all you have to do is buy new blades...
But they are dear, those props, no doubt about that...

Cheers, Martin
Haha...I hear ya, it just doesn't make financial sense to drop that much money on a single prop, when 4 can be had for the same price. And I see solo is no longer sellng "single" replacement blades, which make it even more difficult to justify.
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Old 12-13-2010, 06:56 PM
  #360
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Default RE: Seidel 7-70 radial: Help me decide!

My engine arrived today Now I think I'll put it in the DVI since I should have that built before the Came. Still looking at the fuel thing. There are some places to order Meth. on the net. There are also some places in Maryland that aren't too far away.. We shall see.
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Old 12-13-2010, 07:04 PM
  #361
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Default RE: Seidel 7-70 radial: Help me decide!

Bob,
Vp racing fuels sells methanol for $35 for 5 gallons. I believe 55 gallons was around $170. Shipping for 5 gallons was between 50 and 10p due to the hazmat feel. I found 10 gallons of the stuff for free from a local dragracer who has a methanol funny car, so maybe try looking at a local drag strip to see if the have any.
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Old 12-13-2010, 08:08 PM
  #362
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Default RE: Seidel 7-70 radial: Help me decide!

Thomas, thank you. I'll give them a call this week. They have a Dist. in Newark De. not all that far from No Va. and VERY close to WOD!
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Old 12-29-2010, 02:45 PM
  #363
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Default RE: Seidel 7-70 radial: Help me decide!

I know this really is not the place ,but,you guys are about the only ones that would be interested,.
I had to sell my ST 770..... and am left with a NIB Keleo exhaust ring (Beautiful) that I will never use,,,,I would sell it for $150 shipped CONUS or I will ship overseas at your cost.Please help me out as I am broke and want to buy other "toys".
Thanks
Steve Camp
ixlnrc@aol.com
816-254-2476
Thanks again!!
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Old 12-29-2010, 03:17 PM
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Default RE: Seidel 7-70 radial: Help me decide!

That's a bargain guys better grab it quick.
Doc
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Old 12-29-2010, 03:23 PM
  #365
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Default RE: Seidel 7-70 radial: Help me decide!

And trust a radial owner , you dont want to just let all seven of those cylinders spew at random inside your cowl. My engine isnt cowled, the cyls stick out in the air, its like five (my 5 cyl) little oil jets spraying down the fuse sides aided by the whirlwind created by the 22" thrashing wood thing on the front. My Kekeo collector was $215.00 plus shipping for a 5 cyl.
Doc
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Old 12-29-2010, 03:58 PM
  #366
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Default RE: Seidel 7-70 radial: Help me decide!

Steve, you have a PM.
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Old 12-29-2010, 06:25 PM
  #367
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Default RE: Seidel 7-70 radial: Help me decide!

Can the 7 cylinder engine still be purchased from UMS Technologies in India despite the bankruptcy of the German Seidel company? (Maybe not the link to UMS earlier in the thread earlier seems not to work.)
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Old 12-29-2010, 06:29 PM
  #368
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Default RE: Seidel 7-70 radial: Help me decide!

As far as I can tell UMS doesn't care at all about Seidel's bankrupcy.
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Old 12-29-2010, 07:14 PM
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Default RE: Seidel 7-70 radial: Help me decide!

Seidel's bankruptcy might be more of a business decision than a necessity. Might be a way to close down.
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Old 12-29-2010, 09:08 PM
  #370
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Default RE: Seidel 7-70 radial: Help me decide!

Steve, is the exhaust ring still available?
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Old 12-30-2010, 06:58 AM
  #371
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Default RE: Seidel 7-70 radial: Help me decide!

http://www.umstech.in/view_products.php?cat=Aero

Try this link. It should work fine. Click on Products.
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Old 12-30-2010, 07:25 AM
  #372
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Default RE: Seidel 7-70 radial: Help me decide!

Sold it to Don (ABUFLETCHER)
Thanks
Steve
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Old 12-30-2010, 07:27 AM
  #373
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Default RE: Seidel 7-70 radial: Help me decide!

Did any one ever decide what synthetic oil was good to use with the Seidels? I need to order some methanol soon..
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Old 01-11-2011, 05:40 PM
  #374
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Default RE: Seidel 7-70 radial: Help me decide!

Do any of you guys know what size the E-clip / Circlip is that holds the Valve Rocker arm pivot shafts in place? One of mine popped off sometime (either before i got it, or during handling). So I'm thinking this may be one of those items that may be nice to have a couple extra's of. I've tried 1/8" and it fits, but it gets spread apart as if its to small, and then is easily removed and 3/16" is to large. so i'm thinking its around 4mm? but not sure.

Thanks
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Old 01-11-2011, 05:55 PM
  #375
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Default RE: Seidel 7-70 radial: Help me decide!

My 770 did come with the "circlip" which is really just a c-shaped piece of wire. It seems almost certain to get lost, that and it's a pain to get off and on. So I also immediate thought of using the external circlips (with the holes for the tool). First I tried the M8 and M10 clips that were available in the local hardware shop. The M10 is too big and M8 seems too small (has to be distorted to fit). On a recent trip to Osaka, I was able to find some M9 clips but haven't tried them yet.
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