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Home Model Engine Machinist > Building Them > General Engine Discussion > My first home made model engine The Boll Aero 1,8

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Old 11-08-2017, 07:57 PM   #21
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Default an adjustment bolt at front of Crankshaft

Hallo Model Engine Friends

I have done another modification at my Boll Aero 1.8 model engine.
I made a new piece of screwthread at front of my Crankshaft and used for it an
adjustment Bolt M5 x 40 mm!
You can see the final results on te photos i send with this reply message.
I hope you like the final result.

many greetings from modelmotor-Gerard-The Netherlands-Europe.


Attached Thumbnails
Boll Aero 1.8 cc model diesel engine  update 031.jpg   Boll Aero 1.8 cc model diesel engine  update 032.jpg   Boll Aero 1.8 cc model diesel engine  update 033.jpg   Boll Aero 1.8 cc model diesel engine  update 034.jpg   Boll Aero 1.8 cc model diesel engine  update 035.jpg  

Boll Aero 1.8 cc model diesel engine  update 036.jpg   Boll Aero 1.8 cc model diesel engine  update 037.jpg   Boll Aero 1.8 cc model diesel engine  update 038.jpg   Boll Aero 1.8 cc model diesel engine  update 040.jpg  
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Old 11-09-2017, 03:41 AM   #22
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G'day Modelmotor
After looking at the photo's of your crankshaft with the undercut section of the shaft adjacent to the intake port on the shaft I would be very interested to know how well your motor runs.
Because by machining away what looks to be, between .010" to .020" off the diameter of the shaft the seal between the shaft and the crankcase is now non existent, meaning the port can never truly open or close, so that the port in the shaft is always open and you will be loosing crankcase pressure all the time.
Also you would be better tapping the shaft in the lathe between the chuck and the tailstock for alignment.
Rob Jenkins.


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Old 11-09-2017, 04:26 AM   #23
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Quote:
Originally Posted by Billitmotors View Post
G'day Modelmotor
After looking at the photo's of your crankshaft with the undercut section of the shaft adjacent to the intake port on the shaft I would be very interested to know how well your motor runs.
Rob Jenkins, it's not intake port. Also to lubricate the bearing via canal from crankcase to bearing. The engine is a side port engine.
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Old 11-09-2017, 10:37 AM   #24
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Fair enough my mistake. I obviously wasn't paying attention.
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Old 11-24-2017, 01:11 PM   #25
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Hallo Model Engine Friends,

I have found several small issues which needed an update at my first made Boll Aero 1.8 cc.This engine built in 2008 without any knowledge about about home made model engines diserves a good tune up i think.
I made a photo collage from all the parts i renewed or made from new material.
I hope that you enjoy the photos as much as i did.

many greetings from modelmotor-Gerard-The Netherlands-Europe.
Attached Thumbnails
update several Boll Aero engine parts 003.jpg   update several Boll Aero engine parts 005.jpg   update several Boll Aero engine parts 006.jpg   update several Boll Aero engine parts 010.jpg   update several Boll Aero engine parts 011.jpg  

update several Boll Aero engine parts 013.jpg   update several Boll Aero engine parts 014.jpg   update several Boll Aero engine parts 015.jpg   update several Boll Aero engine parts 016.jpg   update several Boll Aero engine parts 017.jpg  

update several Boll Aero engine parts 019.jpg   update several Boll Aero engine parts 021.jpg   update several Boll Aero engine parts 022.jpg   update several Boll Aero engine parts 025.jpg  
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Old 11-26-2017, 07:50 PM   #26
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Hallo Model Engine Friends,
I had left some pictures from updates done at my Boll Aero engine recently and in the past.
I hope that you enjoy the pictures from the updates just like i do.

many greetings from modelmotor-Gerard-The Netherlands-Europe.
Attached Thumbnails
update several Boll Aero engine parts 026.jpg   update several Boll Aero engine parts 028.jpg   update several Boll Aero engine parts 029.jpg   update several Boll Aero engine parts 030.jpg   update several Boll Aero engine parts 031.jpg  

update several Boll Aero engine parts 034.jpg   update several Boll Aero engine parts 035.jpg   update several Boll Aero engine parts 038.jpg   update several Boll Aero engine parts 042.jpg   update several Boll Aero engine parts 045.jpg  

update several Boll Aero engine parts 046.jpg   update several Boll Aero engine parts 050.jpg   update several Boll Aero engine parts 051.jpg  
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Old 11-26-2017, 08:06 PM   #27
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Hallo Model Engine Friends,

Here are my last pictures made after my last Boll Aero engine updates.
I hope you had a good time watching the pictures from my home made model engine "the Boll Aero 1.8 cc".
Many greetings from modelmotor-Gerard-The Netherlands-Europe.


Attached Thumbnails
continuering update Boll Aero 1.8 cc 002.jpg   continuering update Boll Aero 1.8 cc 003.jpg   continuering update Boll Aero 1.8 cc 004.jpg   continuering update Boll Aero 1.8 cc 005.jpg   continuering update Boll Aero 1.8 cc 006.jpg  

continuering update Boll Aero 1.8 cc 008.jpg   continuering update Boll Aero 1.8 cc 009.jpg   continuering update Boll Aero 1.8 cc 011.jpg   continuering update Boll Aero 1.8 cc 010.jpg  
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