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Cox Engine of The Month
September-2023
balogh's

"Beefed up old stock 290 on my Quickie100 RC after plenty of airtime hours..."

PAST WINNERS
balogh's

"Beefed up old stock 290 on my Quickie100 RC after plenty of airtime hours..."

PAST WINNERS
Viper .049 engine
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Viper .049 engine
Was wondering if anybody knows anything about a Viper.049 glow engine. I just scored a vintage Prop Rod on eBay with this engine. Looks like a Cox crankcase and tank but with chrome cylinder and head with red accents. Seller says it's a modified Cox.049 Thanks, guys.
watertrucker- Bronze Member
- Posts : 45
Join date : 2016-08-15
Age : 63
Location : Imperial Valley Ca.
Re: Viper .049 engine
A picture is worth a thousand words. It sounds like you have a custom engine built and anodized by Tim Wiltse. He made some very interesting and high performance versions like the Mangusta Cox .049. Halfa Works was his website and he produced 3 engine versions like you have starting with stage 1-3. Each version had some mod offering just a bit more performance over the prior stage. He fitted the parts and anodized them. Each engine was test run and released based on a rpm offering. Tim fell off the planet and hasn't surfaced in quite some time. This certainly sounds like one of his engines.
Ken Cook- Top Poster
- Posts : 5258
Join date : 2012-03-27
Location : pennsylvania
Re: Viper .049 engine
Thanks Ken. I can't figure out how to post a pic from eBay. I might have to wait until it shows up and take some pics of it. I only gave $100 for it so it seems like it was a good deal. It's an older Prop Rod with the aluminum bottom. I really wanted one like that and the unique engine was a plus.
watertrucker- Bronze Member
- Posts : 45
Join date : 2016-08-15
Age : 63
Location : Imperial Valley Ca.
Re: Viper .049 engine
That's a new one to me!
Is that a working engine?

Is that a working engine?
Cribbs74- Moderator
Posts : 11887
Join date : 2011-10-24
Age : 49
Location : Tuttle, OK
Re: Viper .049 engine
That's not a Tim Wiltse engine. I've seen these on Ebay and I have no knowledge in regards to them. Ken
Ken Cook- Top Poster
- Posts : 5258
Join date : 2012-03-27
Location : pennsylvania
Re: Viper .049 engine
I've never seen one like that. I like the BadA$$ look. Hope it runs as fast as it looks!
Yeah, not bad for $100 for sure.
Yeah, not bad for $100 for sure.
Marleysky- Top Poster
Posts : 3617
Join date : 2014-09-28
Age : 70
Location : Grand Rapids, MI
Re: Viper .049 engine
Thanks crankbndr, that's the one! I'll keep you guys posted on what happens with it. Thanks everybody for the replies.
watertrucker- Bronze Member
- Posts : 45
Join date : 2016-08-15
Age : 63
Location : Imperial Valley Ca.
1/2A Nut- Top Poster
Posts : 3329
Join date : 2013-10-20
Age : 60
Location : Brad in Texas
Re: Viper .049 engine
Thanks 1/2 A nut! I found an old post on RCU by a guy that bought one. He said basically the same thing, so it's just cosmetic. Looks cool anyway. I wonder if it will cool properly with that sleeve around the cylinder? Will be interesting to find out.
watertrucker- Bronze Member
- Posts : 45
Join date : 2016-08-15
Age : 63
Location : Imperial Valley Ca.
Re: Viper .049 engine
"Viper Model Engine Company. This engine is in used condition with new parts incorporated. The engine is a Cox .049 product in running order. The only change to this engine is a newly manufactured fin arrangement, glow plug, and internal muffler, all of which have a patent pending. These engines come in five different colors with only 20 units being made".
http://www.ebay.ca/itm/131971833710?rmvSB=true
Item location:
Colorado Springs, Colorado, United States
Ships to:
United States

http://www.ebay.ca/itm/131971833710?rmvSB=true
Item location:
Colorado Springs, Colorado, United States
Ships to:
United States

1/2A Nut- Top Poster
Posts : 3329
Join date : 2013-10-20
Age : 60
Location : Brad in Texas
Re: Viper .049 engine
OK I have been a sucker for years with modified Cox engines...all of them
(order off top of head)
Bernie's specialty colored high zoot series
Gibeault
Kirn Kraft
Galbreath
Valentine
Mancuso...By the time I heard about these he was absent
Who ever
Even my own Painted Yellow Bumble Bee
Of course we have to mention the Gold Standard for looks and POWER...but not Cox....Shuriken (take a look at ken Cook's avatar)
I now would love to have, but will not pay the price of admission, for one of these VIPER jewels
Early on, I actually bought 3 of Valenti's engines but soon found..he is a butt head...sorry...(call it as I see it) he and I e-mailed a lot, but he was totally against selling me the rotary valve wear parts....always wanted me to send my engines for a rebuild...
I had 3 of his beautiful engines ----but each rear rotary valve is defective (much too soft aluminum) and wears out in as little as three runs... all I wanted as a secure source of replacement parts (I even said I did not care on the cost)...No soap.... he never seemed to understand that I was a competent engine guy in my own right with a fair selection of superb tools
Disgusted, I sold every one of them and never looked back
I love tinkering with all engines and dearly wish I have a good mill and lathe to adapt stuff or invent... the base tool is not the problem...the tooling and skills are
If one of these Vipers makes it into the Engine of the month,,, My votes depends on seeing it run...
(order off top of head)
Bernie's specialty colored high zoot series
Gibeault
Kirn Kraft
Galbreath
Valentine
Mancuso...By the time I heard about these he was absent
Who ever
Even my own Painted Yellow Bumble Bee
Of course we have to mention the Gold Standard for looks and POWER...but not Cox....Shuriken (take a look at ken Cook's avatar)
I now would love to have, but will not pay the price of admission, for one of these VIPER jewels
Early on, I actually bought 3 of Valenti's engines but soon found..he is a butt head...sorry...(call it as I see it) he and I e-mailed a lot, but he was totally against selling me the rotary valve wear parts....always wanted me to send my engines for a rebuild...
I had 3 of his beautiful engines ----but each rear rotary valve is defective (much too soft aluminum) and wears out in as little as three runs... all I wanted as a secure source of replacement parts (I even said I did not care on the cost)...No soap.... he never seemed to understand that I was a competent engine guy in my own right with a fair selection of superb tools
Disgusted, I sold every one of them and never looked back
I love tinkering with all engines and dearly wish I have a good mill and lathe to adapt stuff or invent... the base tool is not the problem...the tooling and skills are
If one of these Vipers makes it into the Engine of the month,,, My votes depends on seeing it run...
fredvon4- Top Poster
Posts : 3994
Join date : 2011-08-26
Age : 68
Location : Lampasas Texas
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