.098 V twin using 2 Cox .049 Cylinder assemblies.

[MickeyDD]

PM me. I have some radial plans. Common crankshaft with a centrifical blower built in.

Hi Steve,
I am looking for plans for a Cox radial and saw your posting on HMEM today. Could you please send me some plans for a 3 or 5 cylinder radial. Also, do you know where I can find the 17/32-40 tap that I would need for the cylinders? Apparently they were available a few years ago.
Thanks,
Michael

 

[MickeyDD]

Hi Steve,
Thank you for your reply. My e-mail is: [email protected]. Do you also know where I can find a 17/32-40 tap for the cylinder thread? Is that what you use to cut the threads or do you use an internal threading tool?
Thanks,
Michael

 

[stevehuckss396]

I purchased a tap years ago when a member had a dozen made and offered them for sale.

 

[Tony64]

There's also http://www.jamesengine.com ,especially the HEX-2, HEX-4 and Cox V-4. Drawings are included (free!), and there's also HEX-2 plans, published in Model Engine Builder Issue #9, HEX-4 plans were published in Model Engine Builder Issue #14.
There are also Italian designs, 3- and 5-cyl. radials, but I don't think there are drawings, or plans, just the fully and ready assembled engines. Nice interesting engines.

View attachment 65256

View attachment 65257

Oh my God !!!! I built this 10 years ago View attachment 65257

 

[pacomb]

Just a few images on the engine my friend is building

 

[SmithDoor]

Hi Steve,
Thank you for your reply. My e-mail is: [email protected]. Do you also know where I can find a 17/32-40 tap for the cylinder thread? Is that what you use to cut the threads or do you use an internal threading tool?
Thanks,
Michael

You make a form tap used on aluminum. The very find thread used makes this tap great or single point the thread.

Dave

 

[SmithDoor]

Hi Steve,
Thank you for your reply. My e-mail is: [email protected]. Do you also know where I can find a 17/32-40 tap for the cylinder thread? Is that what you use to cut the threads or do you use an internal threading tool?
Thanks,
Michael

You can use brass insert and standard thread for body and single point for the 17/32 x 40tpi in the lathe

Dave

 

[Canyonman]

Pacomb Does your friend have plans or plans to offer plans or can I get a set of plans??
Ken

 

[pacomb]

Hi Steve,
Thank you for your reply. My e-mail is: [email protected]. Do you also know where I can find a 17/32-40 tap for the cylinder thread? Is that what you use to cut the threads or do you use an internal threading tool?
Thanks,
Michael

Have you read all the posts on this thread??? Please read them
https://www.homemodelenginemachinis...cox-049-cylinder-assemblies.22013/post-248594
I managed that a company made an order of taps very cheap

 

[pacomb]

Pacomb Does your friend have plans or plans to offer plans or can I get a set of plans??
Ken

stevehuckss396 sent me the plans he had. I have to say I am unsure if the engine will run. Steve him self has not started the engine. I have seen several faults, and I am unsure it can run..... I would not recomend anyone spending money building this engine, until someone has proven it runs

 

[SmithDoor]

Why does everyone want to use Cox cylinders?

Dave

Have you read all the posts on this thread??? Please read them
https://www.homemodelenginemachinis...cox-049-cylinder-assemblies.22013/post-248594
I managed that a company made an order of taps very cheap

 

[stevehuckss396]

I know of a few 5 cylinder engines that run based on the same design. I have never tried to hide the fact that I haven't run mine. I tell everyone the deal.

 

[pacomb]

Why does everyone want to use Cox cylinders?

Dave

easy, because you already have 50% of the work when making a radial, and they are easily available and more or less cheap. Most of the people that want to make a radial, dont want to fly it, they just make it for fun and to make it run. And if the total cost is low even if the size is low, no problem.

One could make a radial using 5, 7 or 9 cylinder heads and piston from OS, or similar, but they are not easy to get hold of, and the cost is high....

 

[pacomb]

I know of a few 5 cylinder engines that run based on the same design. I have never tried to hide the fact that I haven't run mine. I tell everyone the deal.

Yeap, you always said it, so no one can say they did not know jajaja!

But I really encourage you to try to make it run. What more do you need?? just a good variable power suply!! If you had the hability to design and build that engine, dont stop at the last stage!!!

Can you post info on those 5 cyl engines?? Only ones I have seen are geared, which I think although funny, it makes no sense...

 

[Canyonman]

stevehucks396 I echo the support of pacomb! I too urge you to try and get it running!
Here's to success!
Ken

 

[stevehuckss396]

I don't have time or the desire to do anything with it. If you don't think it will run, don't build it. Design something else and build that. I really have no interest in it and have sold all my 049 engines and glow drivers. I am focused on building a pair of 4 cycle, 9 cylinder engines. I gave the plans to anyone who wanted to use them. I don't sell them and don't promise anything. They were never meant to be released to the public and now i'm sorry i did. Lesson learned.

 

[Shopgeezer]

I have your plans and very much appreciate you giving them to me. I think it is great that this design is out in the community. If a bit more development is needed someone will do it and the design will mature. That is how our hobby works. I for one want to thank you for making the plans available. Don’t listen to the complainers. The quiet majority are happily at work on the engine.

 

[Canyonman]

Hi Stevehucks396, No need to be sour. Our support was sincerely meant to be positive. Please don't let this event prevent you from offering plans or resources in the future. We are a community here and sometimes our enthusiasm may come across wrong I guess. I Thank You for the plans and look forward to seeing your 9 cyl project. Ken

 

[stevehuckss396]

Not sour. Just life has been kicking me in the nuts lately and have bigger things to worry about. I still stop by to help if I can. I get an hour or 2 a week on the shop if I even feel like going out so not been posting any build stuff. Wife still kind of likes me so I ain't complaining. Just working through it.

Sorry if I sounded bitter. I'm really not and I have a lot to be thankful for.

Cheers.

 

[Canyonman]

Steve, I hope things go well for you in 2021!!!! Ken