Author Topic: JLE 14cc Petrol airplane engine  (Read 922 times)

Offline jef

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JLE 14cc Petrol airplane engine
« on: September 10, 2017, 08:09:51 PM »
This engine is losely based on the AlKo 14cc from some pictures I saw on the web .
First I made my own drawings in Invertor and then I could start the build .
The engine is alraedy finisched and it has made its first run , I will post pictures of the work regulary .

Cheers Jef

Online b.lindsey

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Re: JLE 14cc Petrol airplane engine
« Reply #1 on: September 10, 2017, 11:36:12 PM »
Glad to see you jumping right in Jef. Nice looking design. Will be following as you post more on the build.

Bill

Offline jef

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Re: JLE 14cc Petrol airplane engine
« Reply #2 on: September 11, 2017, 06:56:40 PM »
 I started with the backplate of the crankcase , thread cutting M42 x 1 , from "back to front" , so I do not cut in the collar  :)
 This is useful when I cut the thread in the crankcase , so that I can try that it fits .

Cheers Jef

Offline Ye-Ole Steam Dude

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Re: JLE 14cc Petrol airplane engine
« Reply #3 on: September 11, 2017, 07:16:01 PM »

Very nice Jef.

Thomas

Offline jef

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Re: JLE 14cc Petrol airplane engine
« Reply #4 on: September 12, 2017, 12:49:28 PM »
Thanks Bill and Thomas
Some pictures of milling the crankcase , I left a flange to attach on the turning table .

PS ; maybe my English is not always correct but I do my f....ng best  :thinking:

Cheers Jef

Offline Jo

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Re: JLE 14cc Petrol airplane engine
« Reply #5 on: September 12, 2017, 12:56:30 PM »
PS ; maybe my English is not always correct but I do my f....ng best  :thinking:

Cheers Jef

As we English say "Practise makes perverts perfect" and we don't mind as long as we can watch your engine build thread  :)

Jo
Usus est optimum magister

Offline jef

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Re: JLE 14cc Petrol airplane engine
« Reply #6 on: September 12, 2017, 05:39:46 PM »
More pics of the work on the crankcase  :)

Cheers Jef

Offline jef

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Re: JLE 14cc Petrol airplane engine
« Reply #7 on: September 12, 2017, 09:20:08 PM »
And more pics of the crankcase  ;D

Offline Dave Otto

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Re: JLE 14cc Petrol airplane engine
« Reply #8 on: September 13, 2017, 01:11:43 AM »
Hi Jef

Looks like you are off to a great start; the work on the crankcase looks very nice!

Dave

Offline jef

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Re: JLE 14cc Petrol airplane engine
« Reply #9 on: September 13, 2017, 08:33:32 AM »
Thanks Dave , still some more pics of the crankcase  ;D

Cheers Jef

Offline jef

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Re: JLE 14cc Petrol airplane engine
« Reply #10 on: September 13, 2017, 08:38:46 AM »
And finaly the last one's  ::)

Cheers Jef

Offline jef

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Re: JLE 14cc Petrol airplane engine
« Reply #11 on: September 14, 2017, 06:36:39 PM »
The crankcase and backplate are ready , now it's time for the crankshaft , I made it from 42CrMo4 steel

Cheers Jef

Online yogi

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Re: JLE 14cc Petrol airplane engine
« Reply #12 on: September 16, 2017, 10:34:48 PM »
Looking good Jef!  :ThumbsUp: :ThumbsUp: :ThumbsUp:
I like how you made the crankshaft...

Offline jef

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Re: JLE 14cc Petrol airplane engine
« Reply #13 on: September 17, 2017, 02:53:26 PM »
Thanks Yogi  :cheers:

The conrod is made from 7075 aluminium , I hade to make them twice because I was not to happy about the first one , to little body

Cheers Jef

Offline jef

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Re: JLE 14cc Petrol airplane engine
« Reply #14 on: September 17, 2017, 02:56:29 PM »
More photo's of the conrod , the bevels on the smal- and big-end Iturned , in the lenght I used a file .

Cheers Jef