Author Topic: 1/4 scale Otto Langen 1866 Engine  (Read 15684 times)

Offline Jo

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Re: 1/4 scale Otto Langen 1866 Engine
« Reply #60 on: June 11, 2017, 04:04:46 PM »
I have some bits to make the cylinder boring bar out of  :embarassed: next I will have to make a little hole in it like this.

My cylinder recast has been delayed so I have been given the third we had poured while we wait for the last to be cast  8)


And I have found some castings in the garage  :whoohoo: that are bigger and heaver than the OL ones  :-X

Jo
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Offline Jasonb

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Re: 1/4 scale Otto Langen 1866 Engine
« Reply #61 on: June 11, 2017, 05:05:10 PM »
What size inserts are those in the Microbore holders Jo?

Offline Jo

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Re: 1/4 scale Otto Langen 1866 Engine
« Reply #62 on: June 11, 2017, 05:34:16 PM »
What size inserts are those in the Microbore holders Jo?

Those are standard common as muck CCMT sized tips  ;D

Jo
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Offline Jasonb

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Re: 1/4 scale Otto Langen 1866 Engine
« Reply #63 on: June 11, 2017, 05:37:03 PM »
I can see that but are they 06 or 09? CCMT is type not size :disagree:

Offline Jo

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Re: 1/4 scale Otto Langen 1866 Engine
« Reply #64 on: June 11, 2017, 05:43:52 PM »
06's  :naughty:
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Offline Jasonb

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Re: 1/4 scale Otto Langen 1866 Engine
« Reply #65 on: June 11, 2017, 05:47:30 PM »
I was worried as they looked like 09 which would not go down small enough, having said that some of the 06 ones may still be too big, are the code numbers readable on the cartridges?

Offline Jo

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Re: 1/4 scale Otto Langen 1866 Engine
« Reply #66 on: June 11, 2017, 06:17:03 PM »
They take the same tips as fit on all my cheap Chronos lathe tools that I have  ::)

The bar is 970mm long, so I might cut it down.... 700mm would be more than adequate  :thinking: or I could poke the spare up a collet, its just under 32mm diameter seems a shame to loose it.

Jo
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Offline Jasonb

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Re: 1/4 scale Otto Langen 1866 Engine
« Reply #67 on: August 05, 2017, 08:12:51 PM »
Jumping ahead a bit but I could not resist having a measure up and there still may be a bit more to go on top of that ;)


Offline Jasonb

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Re: 1/4 scale Otto Langen 1866 Engine
« Reply #68 on: May 07, 2018, 04:19:42 PM »
With it being a bit hot to be flicking engines over I decided it was about time to fit the Microbore head to the boring bar I started about 6 months ago. All seems OK and the cylinder will just pass the cutter to allow for adjustment. I decided not to mill a flat area around the insert in order to keep the bar as rigid as possible, makes it a tiny bit harder to adjust but I'd rather have the stiffness.




Offline Jo

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Re: 1/4 scale Otto Langen 1866 Engine
« Reply #69 on: May 07, 2018, 06:04:32 PM »
Don't forget you have my micro boring head to return to me  ::)

Jo
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Offline Jasonb

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Re: 1/4 scale Otto Langen 1866 Engine
« Reply #70 on: May 07, 2018, 06:34:22 PM »
Yes it's safely tucked away in a draw, well away from any castings or special coatings ;)

Online Vixen

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Re: 1/4 scale Otto Langen 1866 Engine
« Reply #71 on: May 07, 2018, 07:42:50 PM »
How are you doing the micro adjustment on that extra long, thin boring bar? Any more photos?

Mike
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Offline Jo

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Re: 1/4 scale Otto Langen 1866 Engine
« Reply #72 on: May 07, 2018, 07:44:42 PM »
The Micro boring bars have a disc Vernier scale that fits to the shaft on them  ;)

Jo
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Online Vixen

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Re: 1/4 scale Otto Langen 1866 Engine
« Reply #73 on: May 07, 2018, 07:47:30 PM »
What does that look like?

Mike :noidea:
It is the journey that matters, not the destination

Sometimes, it can be a long and winding road

Offline Jasonb

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Re: 1/4 scale Otto Langen 1866 Engine
« Reply #74 on: May 07, 2018, 07:58:53 PM »
Mike, the main cutter body is threaded M8 x 0.5 and there is a callibrated "nut" that advances the tool, link below should give details. As I have made my own holder it won't have the vernier scale engraved on it but with the nut giving 0.02mm divisions on diameter that is good enough for me, don't need 0.002mm which the vernier would give. Bar is 35mm dia

http://www.microbore.com/info/boring_tools/default.aspx
« Last Edit: May 07, 2018, 08:05:49 PM by Jasonb »

 

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