crankpin

My Feedback: (15)

Jeff - What is current price for one of the Jett .61's, and time to get one from order ? $375.00 range ? If you put the J-61 in an 8 lb. pattern plane, vs another .61, are you going to have the same torque ? Weight pulling power ? From what I saw of Mike's plane, it was a stump puller. That was about 3 year's ago.

Vince

EscapeFlyer

My Feedback: (1)

A little research goes a long way...

Brian

NM2K

My Feedback: (14)

For SPA flying, you can't beat an old OS .61 SF on muffler (stock). For BPA flying (piped), a used Rossi or YS is the way to go. Nothing else will come close. Forget the long-stroke engines for BPA flying. Fast, ballistic, flying requires a high rpm engine - period.

No, I didn't forget the OPS screamers. It's just that getting parts wasn't easy when the engines were being made. Imagine how much work it is going to be now that they have been out of production this long.

I would give anything to know the tricks that Dave Brown and company performed to their OS engines in order to help him win so many times.

As far as I'm concerned the OS, Webra, ST X-series and the Webra Speed series were all about even in power production. Which means that the Rossi and YS engines stomped the juice out of them.


Ed Cregger

AllTheGoodNamesAreTaken

My Feedback: (180)

The BSE .60L (Bar Stock Engine - as shown in the photo) runs $365 sans shipping. The cast "SJ" Sport Jett is a little less expensive at $325.

Here's "Dub Jett's Personal Comments on the 60L"
This is our newest of the small block engines. Built on the same basic block casting as the .40, the SJ-60L weights only 17.5 oz., complete with muffler and spinner nut. Getting an engine of this size into such a small package took a few tricks, but don't think there are any compromises here. The case and crank have been beefed up to handle the extra power and larger internals. Reliability has been excellent.

People ask, "what is the 60L for?" Good question. First, as the other Jett small block engines got bigger and bigger, they developed their power at higher and higher RPM's. We did not need another animal, the 50 is already the meanest on the block. We needed a quieter, higher torque engine. The 60 is it. The timing and exhaust system have been altered to allow the engine to pull 11" propellers, while maintaining that awesome throttle response and idle of other Sport-Jetts. Even so, this is not your typical "Eastern-built" 60-size engine. It turns an 11x5 at 16000 and an 11x6 about 15000-quite a bit more than the competition. But with all this power, we didn't design this engine for the typical 60-size airplane. You can get a Sport-Jett 65-90 for that. Use this one to get all you can out of smaller, heavier aircraft, or perhaps in multi-engine models where size and weight are extra important.

I chose the 60L for my Eureka Mach 1 which is designed for small case engines (as are a lot of the older designs) where a YS, or SF-P is just too big and heavy.

AllTheGoodNamesAreTaken

My Feedback: (180)

The SF is a "Long Stroke" designed to run in the 12 to 13K RPM range.

NM2K

My Feedback: (14)

Yeah, that's true and that's why I recommended it for SPA flying when restricted to use with a muffler. While it would make a fair amount of power with a tuned pipe, it does not fall into the hyper fast engines required for ballistic pattern.


Ed Cregger

crankpin

My Feedback: (15)

Factor in reliability, and the YS 61, is it pumped only? OK for BPA.

Crank

pitstop000

My Feedback: (26)

YS actually had 3 10cc motors

The YS 60 “ Round Head� short stroke

The YS 61 long stroke “Square Head�

The YS 61AR long stroke “ Square Head� Lightweight motor

All are actually not pumped but use a High pressure fuel system.

pitstop000

My Feedback: (26)

So who is the King of the 10cc class for power and reliability past and present?


Hands down 1st place the YS60 “Round Head� - BPA motor

2nd place goes to Rossi and OPS

3rd place really doesn’t matter.

earlwb

the Fox eagle IV .60 engine is roughly equal to the Rossi engine if they both use the same muffler. They turn the same RPMs using the same prop and fuel. Years ago I flew pattern regularly using Fox Eagle III engines and the other more exotic engines didn't run any better than the Fox engines did.

I use Fox engines myself. the FOX Eagle IV .60 is competitively priced if you use Fox's "trade in a clunker engine" for a 50% discount from retail. You can get the .74 as well if it is allowed for you to.
The stock Fox muffler is pretty restrictive. What I did was make a bridge adapter and run a Performance Specialties tuned muffler on it and then it runs in the same RPM range that my Rossi .61 runs with the same muffler on it.

The Fox engine has a rotatable upper cylinder half, so you can make the engine's exhaust exit the left or right side or rear if you want. I still have a rear exhaust tuned pipe setup for Fox engines too. also the MVVS mufflers and tuned pipe headers will fit the Fox engines. There is about maybe 1/2 mm difference in the muffler screw bolt pattern. So sometimes a little filing with a jeweler's file is needed and can have them bolt right up no problem.

But I would say if you don't like Fox engines then go with the Rossi engine. My example has the carburetor with the inflight needle valve adjuster on it. which is really nice to have when the conditions change enough during the day to affect the engine's needle valve setting.

Fox Manufacturing is alive and well and they still make and sell engines.

speedracerntrixie

My Feedback: (29)

I stand corrected. For some reason I was under the impression that Mecoa purchased the manufacturing rights to these engines and were having componets manufactured offshore and then assembled the engines. I am glad to be made aware it is all happening in the US.

mike31

My Feedback: (67)

I have one of those and an asp 61 AND AN asp 108.

rcrick10

My Feedback: (1)

a YS60 would pull that thing all over the place.

rcrick10

My Feedback: (1)

ys 60 with a tunned pipe. i'm turning a 12x10 apc on my dirty birdy.

RichardGee

My Feedback: (156)

No question, I would get a Lee Custom K&B .61 w/PDP porting. You will get an engine with a "vintage" heritage - perfect for your DB - but also a hand-fit and customized powerplant by the DESIGNER himself.
At only $127.95, it's a no-brainer...

Sport_Pilot

Not sure who was on bottom, but I think it was Magnum. both the OS FX and TT Pro was near the bottom, but the OS LA and TT GP was in the upper half. Fox and tower were the top two. But the Fox did it with only 5% nitrofuel because it would not run well on more nitro than that.

stuntflyr

I forgot about Clarence and his little K&B deal. Nice thought. It doesn't weigh a ton either.
Any of the engines spoken of on this thread are perfectly capable of hauling around a 6 to 7 pound model for a Novice Pattern flyer anyway (OP). It has become a thread to express one's favorite engine, though I like the info.
Chris...

stuntflyr

It must have been quite a while ago, if the bushed OS beats the Magnum! KLXmaster has his turning near 15,000 grand now!
Chris...

serinadys

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Sport_Pilot

You can do that with any engine, especially if turning a toothpick!  It was not the current Magnum, and yes the LA and GP do perform better than the .60 FX and .60 Pro.  Partly because both the .6 LA and .60 GP are .65 cubic inch's in displacement.  The FX is no longer made.

cloudancer03

My Feedback: (22)

if the displacement needs to be of the same vintage there are engines for sale on numerous sites as well as ebay.if it needs to be a 61 regarless of age I will state the magnum 61 is a powerhouse and there are other manufactures out there.

earlwb

The problem with those published engine tests, is they tend to use smaller propellers on the engines.
But when you run a "real world" type of prop that the engine can actually turn realistically so that the plane can fly, you get results that aren't even close to the magazine test numbers.  The engines, all of them, look very disappointing performance-wise when you use a real prop on them.  But they fly the planes really well, and that is what matters.

stuntflyr

Yeah,
But the reality is that us in SoCal like using APC 11x7's because they seem to outperform everything else, even the old stand-by's, as well as not BS-ing anyone because we're just trying to find the best stuff available right now because a lot of us are into flying models instead of collecting engines from the 70's and 80's.
(Heck, I was using an APC 12.75x3.75 on my OS46AX powered Kaos because it was all I had to fly current AMA Pattern with was my Kaos. It turned it well. I use what works.)
The Rossi's on my newly acquired estate-sale EU-1A's have Zinger 10.5x7.5 props. I can't wait to compare the power of the Rossi to the new ST, Magnum and whatever else anyone has around that is new. Tony F's EVO/Phoenix was kicking Kevin's YS/Phoenix's butt at the Camarillo meet. along with Doug's YS/Atlanta, too. Those guys were the one's that thought the Magnum on KLXmaster's Magnum/Vertigo was unreal, and I was just in agreement because of that engine's apparent tractability and awesome thrust. That was the one on the factory Magnum muffler, and an APC 11x7. It's no toothpick, gentlemen, and it really is a 7 to 7.3 on my Prather pitch gauge. Unlike the Rev-Up's, Zingers, Top Flites, Master Airscrew, etc. In fact, if it isn't an Eather or Bolly cf prop, one doesn't know what pitch it is until it's measured because they are all advertised as more pitch that they really are. Kind of like women's dress sizes!
I'm not saying small props are bad, they may actually get the performance a pilot is looking for depending on his desire, feel, model, style, etc. I just wanted you guys to know that I don't have a dog in any fight here, just reporting what I've seen while trying to keep the price and practicality in line (for me and anyone else that's a regular working man) with actually operating the models present day.
Chris...

jessiej

Lee Custom.

jess

EscapeFlyer

My Feedback: (1)

I always wanted a Lee custom .61 K&B w/PDP... but isn't this essentially what the HB .61 PDP is? Or is the K&B better???

I like Chris's outlook. If one can affoard the top contenders, I agree with Paul- completely.

In my world, the Magnum and Super Tigres are amazing, reliable, LONG LASTING, and relatively affordable. When you treat an engine poorly, you will have a bad one to kindle one's bias against a great engine...

The DB would be sweet with a K&B Lee custom PDP... (are we still answering the OP's question??? )

Brian