Author Topic: JLE 14cc Petrol airplane engine  (Read 9544 times)

Offline jef

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Re: JLE 14cc Petrol airplane engine
« Reply #30 on: January 20, 2018, 08:33:01 AM »
Almost finiched , I had to make the coverplate transfers , inlet manifold and clean the OS carb. ultrasoon
For the piston ring I used one from an OS FS-62-V , but because thats for a four stroke engine
I had to make a little slot for the piston ring pin , with a jig I made for it ,
so it would not turn around in the cilinder , and I still had to put the pin in the piston ring groove .

Offline jef

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Re: JLE 14cc Petrol airplane engine
« Reply #31 on: January 20, 2018, 08:37:39 AM »
Pin in piston ring groove , first drill with 1 mm 5 mm deep , than 1,1 mm 2 mm deep
cut a piece from a 1,1 mm bore and press it in the hole , than gring it to the exact lenght in the lathe .

Offline Admiral_dk

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Re: JLE 14cc Petrol airplane engine
« Reply #32 on: January 20, 2018, 11:20:02 AM »
A very important lock-pin and nicely executed insert  :ThumbsUp:

Offline ThomasM

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Re: JLE 14cc Petrol airplane engine
« Reply #33 on: January 20, 2018, 04:44:09 PM »
Hello Jef,

This is a nice two stroke design. The ports look they are designed for seriuos power output as far i can see.
Do you rely only on the magnetism for the hall magnet to stay in place ?
Will the engine power an airplane model or something similiar ?

I am looking foreward to hear it run !

Best regards,
Thomas

Offline Ramon Wilson

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Re: JLE 14cc Petrol airplane engine
« Reply #34 on: January 20, 2018, 06:37:53 PM »
Neatly accomplished Jeff - and a nicely machined piston - you have me wavering ;)

Tug
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(a very apt phrase - thanks to a well meaning MEM friend)

Offline jef

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Re: JLE 14cc Petrol airplane engine
« Reply #35 on: January 21, 2018, 08:29:06 PM »
Thanks guys  :ThumbsUp:

The power output will be moderate I think , look at the timing photo

The magnet is 4 mm in diameter and pressed in a hole of 3,9 mm ,  I think it's pretty stuck

I am gonna use the engine on a KeilKraft Falcon that I am building

Regards Jef

Offline Ramon Wilson

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Re: JLE 14cc Petrol airplane engine
« Reply #36 on: January 21, 2018, 08:42:11 PM »

I am gonna use the engine on a KeilKraft Falcon that I am building

Regards Jef

Now that's going to make a real nice combination Jef - lovely design the Falcon  :ThumbsUp:. Do you have a nice set of inflatable wheels for it?

Years ago I set out to make a Jasco Flamingo - do you know it? Similar size but huge wing area - the larger ribs needed near a sheet of balsa  :o. I never did finish it but sold it on - to non other than Ron Moulton would you believe (forgive the name dropping but that's just who bought it). He never finished it either - have no idea what happened to it after he passed on.

Regards - Tug

"I ain't here for the long time but I am here for a good time"
(a very apt phrase - thanks to a well meaning MEM friend)

Offline jef

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Re: JLE 14cc Petrol airplane engine
« Reply #37 on: January 21, 2018, 09:28:36 PM »
Yes , I got a set of 5" inlfatable balloon tires for it  8)

The plans are on outerzone https://outerzone.co.uk/plan_details.asp?ID=6950

First run off the engine <a href="https://www.youtube.com/watch?v=uM37c--O9JU" target="_blank">http://www.youtube.com/watch?v=uM37c--O9JU</a>

Regards Jef

Offline Ramon Wilson

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Re: JLE 14cc Petrol airplane engine
« Reply #38 on: January 21, 2018, 10:49:38 PM »
Thanks for the link Jef but my building days are well over I fear  ::)

That's running really nice - pretty consistent and considering it appears open exhaust not too noisy either. What size prop do you have it on there?

Tug

PS just clicked on your link expecting to see your Falcon - yep, that's the one  :)

"I ain't here for the long time but I am here for a good time"
(a very apt phrase - thanks to a well meaning MEM friend)

Offline Admiral_dk

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Re: JLE 14cc Petrol airplane engine
« Reply #39 on: January 22, 2018, 11:07:43 AM »
Great runner Jef  :ThumbsUp:  and thank you for the link  :)

Offline jef

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Re: JLE 14cc Petrol airplane engine
« Reply #40 on: January 23, 2018, 10:01:33 PM »
What size prop do you have it on there?

Master Airscrew 14 x 6

Jef

Offline Ramon Wilson

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Re: JLE 14cc Petrol airplane engine
« Reply #41 on: January 24, 2018, 07:53:22 AM »
That's a great result Jef - swings that with consummate ease.

Do you have any drawings you'd be prepared to share - I've yet to make a sparkie and that would fit the bill just nicely  :)

Regards - Tug
"I ain't here for the long time but I am here for a good time"
(a very apt phrase - thanks to a well meaning MEM friend)

Offline jef

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Re: JLE 14cc Petrol airplane engine
« Reply #42 on: January 24, 2018, 08:20:09 AM »
Do you have any drawings you'd be prepared to share - I've yet to make a sparkie and that would fit the bill just nicely

No problem , I made some PDF's of the inventor drawings and post them in "Plans & Drawings"

Regards Jef

Offline Ramon Wilson

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Re: JLE 14cc Petrol airplane engine
« Reply #43 on: January 24, 2018, 08:53:32 AM »
Thanks Jef - that's a really great way to finish a super build log - well done indeed  :ThumbsUp:

Tug

"I ain't here for the long time but I am here for a good time"
(a very apt phrase - thanks to a well meaning MEM friend)

Offline Roger B

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Re: JLE 14cc Petrol airplane engine
« Reply #44 on: January 29, 2018, 10:08:51 AM »
Looks and sounds good  :praise2:  :praise2: Propellers always scare me  :o
Best regards

Roger

 

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