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About those Long Stroke .61's--

Old 11-14-2007, 01:12 PM
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Jeff Worsham
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Default About those Long Stroke .61's--

Hi all- Looking for engines to finish off a couple Escapes I started about 10yrs ago. Originally was going to use OS .61 rear exhaust LS, but no longer have those engines. Are there any comparable long stroke .61's being produced today? I don't know if the current OS and Enya .61's are long stroke and don't see info on their websites that say. Disappointed that it seems the YS .61 LS is no longer produced either. If I have to resort to the second hand market for power, did other manufacturers make a long stroke besides OS and YS? Thanks for any help, jeff
Old 11-14-2007, 01:55 PM
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Default RE: About those Long Stroke .61's--

Don"t know if the defenition of a long stroke means that the stroke needs to be greater than the bore or if it's all relitive. I just bought a Enya 61 CX for My Kwik-Fli III project, have not run it yet but expect good things from what I have read elseware. here are the specs. also the specs. for the Enya 60III which has a longer stroke and is still being made but you need to buy the R/C carb seperate. here is a link to a review of the Moki 61-LS http://www.justengines.unseen.org/moki61.htm much heaver than the enya but looks like it really puts out the power.



Richard
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Old 11-14-2007, 03:44 PM
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perdo
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Default RE: About those Long Stroke .61's--

I can help you with one maybe.... Call WIngs and Things Lubbock, Texas ask for Robert he has a new never seen fuel Webra speed .61 with the dyna mix carb. just no box that he can find has a reasonable price on it.. Hook it with a macs header and pipe and away you go..

Wings and Things 806-793-7777


Thanks Don
Old 11-14-2007, 04:04 PM
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Default RE: About those Long Stroke .61's--

ORIGINAL: Jeff Worsham

Hi all- Looking for engines to finish off a couple Escapes I started about 10yrs ago. Originally was going to use OS .61 rear exhaust LS, but no longer have those engines. Are there any comparable long stroke .61's being produced today? I don't know if the current OS and Enya .61's are long stroke and don't see info on their websites that say. Disappointed that it seems the YS .61 LS is no longer produced either. If I have to resort to the second hand market for power, did other manufacturers make a long stroke besides OS and YS? Thanks for any help, jeff
Congrats on the Escapes!!

To my knowledge...The OS SF and RF series...And the YS 61LS and YS 61AR were about it as far as Long Stroke Pattern oriented engines...I think they were sorta "niche" engines...A compromise of power-v-noise for the time...Then the 4 strokes kinda took over for the next evolution of pattern...

You can still find OS RF's or YS 61LS's on ebay...Various conditions obviously...Sometimes NIB...Sometimes used but in good shape...

There is a really nice looking HannoII on there right now which includes a Hanno Pipe(Hatori 700) and Factory OS Header:
http://cgi.ebay.com/OS-MAX-61-RF-ABC...QQcmdZViewItem

There is also a non pumped RF...But this is a little pricey compared to what some of the latest RF's have gone for in the auction format...(Not saying it's not worth it...That's a personal decision...I think they probably sold for more than that years ago when new):
http://cgi.ebay.com/O-S-Max-61RF-ABC...QQcmdZViewItem

There is also a member here...glowplugboy...He has listed a used YS 61LS on ebay which apparently has a new piston and sleeve...It didn't sell the last I saw it on ebay...So if you were interested in looking him up and send him a message....He may still have it...

I'm sorta sifting through my stuff too...Who knows...I may post an engine or two in the future...Havn't decided just yet...

Have Fun...

Chuck
Old 11-14-2007, 04:57 PM
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Jeff Worsham
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Default RE: About those Long Stroke .61's--


ORIGINAL: tweedy

Don"t know if the defenition of a long stroke means that the stroke needs to be greater than the bore or if it's all relitive.
Hi Richard,
I always understood the long stroke meant that the stroke was in fact greater than the bore for more torque. Thanks for the Moki link, and Enya info. Can't wait to spend some time comparing. Jeff
Old 11-14-2007, 05:00 PM
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Jeff Worsham
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Default RE: About those Long Stroke .61's--


ORIGINAL: perdo

I can help you with one maybe.... Call WIngs and Things Lubbock, Texas ask for Robert he has a new never seen fuel Webra speed .61 with the dyna mix carb. just no box that he can find has a reasonable price on it.. Hook it with a macs header and pipe and away you go..

Wings and Things 806-793-7777


Thanks Don
Thanks Don, I'll check into it when I can get to a phone. However, I don't know if all Speed .61's were long strokes. Do you know?
Old 11-14-2007, 05:10 PM
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Default RE: About those Long Stroke .61's--

You'll find OS RF-P and Hanno's on eb*y, and YS 61's as well though I don't se them quite as often. I think you'll be quite happy if you can pick up any of these...they won't be cheap but really isn't an alternative to them right now.

Webra did have a longstroke version of their rear exhaust 61 (they were called Race as opposed to Speed), some were even pumped- this is what Chip Hyde used in winning the World's back in I think 1990.
Enya also marketed a pumped rear exhaust 61 during the late 80's, but I don't recall it being a long stroke design.

Folks will certainly recommend all manner of current side exhaust engines, and you can even obtain custom made wrap-around headers...but it's worth doing a little digging and finding a NIB or well treated OS or YS IMHO.
I flew an Escape for years with an OS RF-P; a perfect engine for that model.

Jett produces some stunningly beautiful front intake rear exhaust engines, not cheap but neither are Ferrari's.
Old 11-14-2007, 05:52 PM
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Default RE: About those Long Stroke .61's--

There's a Rossi .61 rear exhaust on Ebay Australia right now. That might also be suitable
Old 11-14-2007, 06:02 PM
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Jeff Worsham
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Default RE: About those Long Stroke .61's--



Have Fun...

Chuck
Thanks Chuck! Lots of info there and you're right- a ton of fun comparing engines!
Jeff
Old 11-14-2007, 06:40 PM
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Default RE: About those Long Stroke .61's--

there is a seller that occasionally sells mark/moki 61's with a header and tuned pipe on ebay, buy it now for $150, i have that package but have never run it. i thought i remembered the newer .61 hit 17,500 rpm. my practice pattern plane (king Kobra) is nearing completion and will be the horse that the .61 will be mounted on.
Old 11-14-2007, 07:36 PM
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Default RE: About those Long Stroke .61's--

I noticed that there are a couple of new moki's on E-Bay right now but they are both side exaust I suspect the rear exaust might be a bit more scarce.

Richard
Old 11-14-2007, 07:41 PM
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Default RE: About those Long Stroke .61's--

mine is a side exhaust
Old 11-14-2007, 10:55 PM
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Default RE: About those Long Stroke .61's--

looks like just engines in the UK sells them for less than 150 pounds with pipe or 99 without

Richard
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Old 11-15-2007, 05:58 PM
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Default RE: About those Long Stroke .61's--

Here is a link to a guy who does custom headers which was referenced above...I sure like the looks of his stuff...Never seen it in person..Only photos...There may be other folks who do this also??

So if you have a side exhaust engine and wanna run the pipe down the belly...There are options available...

Mueller Custom Headers:
http://www.rcaerobats.net/Mueller/Mu...tomHeaders.htm

Have Fun...

Chuck
Old 11-15-2007, 07:43 PM
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s. wallace
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Default RE: About those Long Stroke .61's--

The Mueller headers are very nicely done indeed, and not at all unreasonable price-wise. I ran one on an OS 91FX in an MK SkyStar 90.
Old 11-15-2007, 08:30 PM
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Steve25
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Default RE: About those Long Stroke .61's--

Hello,

Look to this engine from Webra , ofcourse not really a long stroke but with 24 bore 22 hub , and the power it makes..... , and it's an ABC liner piston set !!!!

http://www.webra-austria.at/motor.ph...r=AERO&lang=EN
Old 11-15-2007, 10:14 PM
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Default RE: About those Long Stroke .61's--

if $ is no object you might check out these engines http://www.jettengineering.com/engines/bseinfo.html they make a rear exhaust 100 that fits the OS 61 mounting

Richard
Old 11-15-2007, 11:47 PM
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Default RE: About those Long Stroke .61's--

If I were really being picky, I'd talk to the folks at Jett Engineering. Most helpful, they are.


Ed Cregger
Old 11-16-2007, 06:34 AM
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Default RE: About those Long Stroke .61's--

Guys,

Don't disregard the MVVS 61. It's a true long stroke

DerFly
Old 11-16-2007, 08:32 AM
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Default RE: About those Long Stroke .61's--

Hey Lotus72D,
How did you like the Skystar? Was the 91FX enough power? I have a Brand new Jett100 for mine which is almost at the covering stage. I had considered putting a Hanno in it also.
Regards,
Will Bartlett
Old 11-16-2007, 10:04 AM
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Default RE: About those Long Stroke .61's--


ORIGINAL: DerFly

Guys,

Don't disregard the MVVS 61. It's a true long stroke

DerFly
Thanks for bringing that up. Who sells/distributes them? jeff
Old 11-16-2007, 10:27 AM
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Default RE: About those Long Stroke .61's--


ORIGINAL: flywilly

Hey Lotus72D,
How did you like the Skystar? Was the 91FX enough power? I have a Brand new Jett100 for mine which is almost at the covering stage. I had considered putting a Hanno in it also.
Regards,
Will Bartlett
I want an Skystar too...Would a Hanno suffice??

TIA...

Chuck
Old 11-16-2007, 12:38 PM
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s. wallace
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Default RE: About those Long Stroke .61's--


ORIGINAL: flywilly

Hey Lotus72D,
How did you like the Skystar? Was the 91FX enough power? I have a Brand new Jett100 for mine which is almost at the covering stage. I had considered putting a Hanno in it also.
Regards,
Will Bartlett
Will,

I felt it was lacking w/ the 91FX and imagine you would feel the same running the Hanno. I had a YS 1.10 in it initially which was awesome when it ran...I just couldn't handle the inconsistency of mine (I've seen some that run great every time & some like mine that are a PIA).
The Jett 100 should rock!
Lemme know if you ever get tired of storing "my" Joker kit...wish I would have kept it

Scott Wallace
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Old 11-16-2007, 05:24 PM
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Default RE: About those Long Stroke .61's--

Very pretty airplane, Scott!
I bought a G-trick sveral years ago and put an OS .91FX in it with a Mueller header (originally for a ST2300, which I modified slightly). The engine ran fine, but after 30 flights the exhaust system had unending issues staying together and on the airplane. Sooooo I put a Hanno on it. I didn't notice any difference in performance. The G-Trick was a bit heavy and I would have loved a bit more power... I'm currently flying a Super VR-90 with a Hanno in it. Flies great, but is very light (7lbs 2ounces) and all monokote. I think the Skystar with a Hanno would be fine with a new wing with 10% thinner wing tips (tapered from the root). My last Runaround had custom cores. I had Dick Hanson use the stock runaround root, but the Elite tip. Wow, what a difference in performance.
The Jett is a magnificent piece of engineering. I'm looking forward to tearing up the sky with it!!
-Will Bartlett
Old 11-18-2007, 05:08 AM
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Default RE: About those Long Stroke .61's--

Here is a link to Webra alpha codes whitch list three 61 long strokes
1 Race and 2 Speed ABC's
http://www.horizonhobby.com/Articles...ArticleID=1161

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