Tee Bee

Another Skyline .049. Took this pic in '07 when I received it from Tim. It's been flying strong for over 2 years of hard use on my Skydrill. Lots of attention to piston/rod slack and frequent resets have kept it going almost as good as new. Have experimented with several props and am currently running the black rubber ducky Cox 5x3.

dckrsn

Tim Wiltse's work is great(imho).
Here's a better shot of an engine with one of his
crankcase assemblies with his high performance crankshaft and spinner.

Tee Bee

Here's a Mangusta DR .049. I bought this one from Tim in '08. I can't believe I still haven't gotten around to running it. To me, this thing is a work of art. Rear induction with lots of mods and custom made parts. Another member of this forum has sent me a set of plans and parts for a future 1/2A speedster kit and this engine is destined for the firewall if it runs well. There will be a build thread of it when the time comes.

dckrsn

Nice engines Tee Bee.
Whew, I need a cigarette.

Tee Bee

Did someone say mixed parts? I've been running this one on my Das Splat Jr lately. It has a TD .051 bottom end breathing thru a custom Dickeybird reduced-size venturi. The top end is a SPI piston/cylinder combo from Vintage Glow Engines made from Surestart parts. It has a Valentine turbo glow plug head. Also note the custom engine mount I found in a box of Cox parts I purchased at a swap meet several years ago. Runs great on a standard vented tank setup without a pressure tap. This combo ran great at the SMALL Fly-In a couple of weeks ago until a cracked fuel line in the tank followed by poor piloting on my part resulted in a hard landing causing some minor damage and fuel-soaking inside the plane. I'm almost done with the repairs.

t587y28

I would like to get a few red spinners such as the one in your picture.
Were did you get it?

dckrsn

http://halfa-works.com/index.html
That's Tim Wiltse's site.
Scroll to the bottom of the parts page.
You might want to contact him(phone) first.

t587y28

Thank you for the INFO.

dckrsn

I hope someone else pony's up with some pics
before I run out of engines.[]

hfenn

Nothing too exotic, but a Golden Bee tank and backplate, Sure Start front and top ends, Galbreath head and Nelson plug. Currently resides in my Skydrill and most recently flown at the 2010 Little Rock SMALL.

dckrsn

hfenn,
Exotic-exshmotic. Nice engine!
How many head shims do you
typically use? Do you go for
speed or duration?
Tnx.

hfenn

On this particular plane I run an APC 5.7X3 which gives good but not outrageous speed. This particular cylinder only needed one shim on 25% nitro. On most every Cox engine I run, I will vary the gaskets as temperature and humidity change. I'm in South Carolina and the temp/humidity in the summer usually runs 90/90 whereas on a nice fall or spring day it may be 50/30. I have a Bob Harris Quikshot running a similar set-up with an APC 4.2X4 for speed since it is a 1/2A pylon racer and need not be concerned so much with vertical climb.

dckrsn

Thanks hfenn .
I appreciate the temp/hum tip.

dckrsn

Here are a couple of the Kustom Kraftmanship backplates mentioned earlier.

Big Al-RCU

Question about the Kustom Kraftmanship backplates. What’s under the jam nut, a split cone or an O-ring, or? Never had one. Wasn’t there also a KirnKraft?
Thanks, Al

Yuu

In post #30, where did that aluminum engine mount come from?

Tee Bee

Yuu, read the post.

I'm not sure who made it but it's working well so far. I'd never be able to bend one up that nicely. Was just one of several little treasures I found in a cigar box of Cox-related junk I picked up at a swap meet at a Big Bird fly-in of all places!

dckrsn

Al,
The KK valve assy. features a split collet under the nut.
Tough for me to photograph, but here it is. Click on the photo.
I've heard of KirnKraft, but know nothing about them.
Bob

t587y28

dckrsn : Thanks for all your engine pictures and information. I wish other readers would contribute.
I am using my computer scanner to take my pictures, it’s a lot easier than using a camera.

dckrsn

t587y28, I was hoping for more pictires from others also.
Looking forward to seeing yours.
Sorry for hi-jacking your thread.
Bob

Big Al-RCU

Thanks
Al

dckrsn

Hey it's Saturday night!
Here's another.

fizzwater2

My Feedback: (61)

Wasn't Kirn Kraft the forerunner of kustom Krafstmanship? Dale Kirn, I believe it was.

dckrsn

fizzwater2,
Dunno.
Dale and his daughter Mary Kay were a record setting 1/2a speed team in 1980.
This was probably Joe Klause's heyday for cox engine rework,mods,etc.
There must be some info out there.
I gleaned this here. http://www.modelaircraft.org/mag/200.../onthefly2.htm
Kustom Kraftmanship/KirnKraft hmmmm. Who knows?
Bob

dckrsn

t587y28, Looks like it's up to you and me,
and I don't have much left that fits the
category.[]
Bob