Author Topic: Bruce Macbeth Engine, European Version  (Read 5332 times)

Offline fumopuc

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Bruce Macbeth Engine, European Version
« on: October 11, 2017, 02:01:34 PM »
I have found a new exercise, for playing around with Fusion 360.
The design copy process is getting more and more fluid and instead of watching TV in the evening I do some CAD work.

It is really fun to see the process.My only future problem will be, how to get the elves from Chris into the south of Germany ?And If they are here, how keep them for one or two years ?

« Last Edit: October 11, 2017, 02:05:04 PM by fumopuc »
Kind Regards
Achim

Offline crueby

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Re: Bruce Macbeth Engine, European Version
« Reply #1 on: October 11, 2017, 02:25:54 PM »
That animation is looking great - something I have only dabbled with in Fusion so far, need to learn more of it. For my next project, was wondering if its possible to animate/joint chain links going around drums and rollers to move parts? Probably can, but it would take a lot of links...

As for the shop elves, maybe we can work out an exchange program, send a few at a time, have each set bring back some of that great German beer!

 :cheers:

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #2 on: October 11, 2017, 06:22:50 PM »
Hi Chris, until today I have not seen a Fusion Tutorial, but I have seen one from Inventor.
https://youtu.be/5vp-3hqR_T4

I am sure it will work in Fusion also.
Beer supply should not be the problem.
« Last Edit: October 11, 2017, 08:51:12 PM by fumopuc »
Kind Regards
Achim

Offline crueby

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Re: Bruce Macbeth Engine, European Version
« Reply #3 on: October 11, 2017, 08:53:09 PM »
Hi Chris, until today I have not seen a Fusion Tutorial, but I have seen one from Inventor.
https://youtu.be/5vp-3hqR_T4

I am sure it will work in Fusion also.
Beer supply should not be the problem.
Looks promising, will give it a try. Thanks!

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #4 on: October 29, 2017, 07:33:22 PM »
The model of this engine, with all the necessary  metric modifications, is nearly finished now.
This Fusion 360 is a great and useful toy, I love it.
But now its time to make swarf again, all the current project are waiting for further action.
 
Kind Regards
Achim

Offline Dave Otto

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Re: Bruce Macbeth Engine, European Version
« Reply #5 on: October 30, 2017, 12:03:13 AM »
Looks great Achim!

It will be fun to watch this one progress.

Dave

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #6 on: October 30, 2017, 07:18:58 PM »
Looks great Achim!

It will be fun to watch this one progress.

Dave




Yes Dave, this would be a very nice project, but it will take some time to start it. Gears, valve springs and piston rings  are in the box already, but the time is missing and negotiations about postponed retirement are ongoing.
Kind Regards
Achim

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #7 on: December 25, 2018, 03:40:42 PM »
Hi everybody,
not 2019 yet, but some more and intensive work preparation has started now.
I have learned the minimal usage of the Fusion360 CAM module a bit more and so my first programm are prepared for the CNC milling in the brass plates.
The brass plates are ordered and I am waiting for the delievry.
So some swarf will be shown, hopefully in a couple of days.
Until now I have made only some sample cuttings to confirm the settings with the brass and my available cutters.
To be sure that everything will work on my mini mill, I checked the CNC program already with a tooth stick in the collet and a "paper work piece" on the mill table.
It is confirmed now, that the tool-paths are in the available range of my mill. Also the work holding with its hight is confirmed.
Here the simulation of one side plate machining operation.
Some funny pictures of the mill table with the dummy part and the dummy cutter.
Waiting for the postman now.
« Last Edit: December 25, 2018, 03:43:54 PM by fumopuc »
Kind Regards
Achim

Offline b.lindsey

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Re: Bruce Macbeth Engine, European Version
« Reply #8 on: December 25, 2018, 04:50:42 PM »
Getting close to some real swarf Achim. Hope the postman doesn't keep you waiting too long.

Bill

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #9 on: January 05, 2019, 07:55:10 PM »
Hi everybody,
we have got nearly 50 cm of fresh and wet snow but also a parcel with some brass plates in it.
Kind Regards
Achim

Offline Admiral_dk

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Re: Bruce Macbeth Engine, European Version
« Reply #10 on: January 05, 2019, 09:11:18 PM »
That is fast progress Achim, and I thought that this engine was only a CAD project, but we will see it running in the future  :ThumbsUp:

 :cheers:     :popcorn:

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #11 on: January 06, 2019, 06:39:30 AM »
......., but we will see it running in the future  :ThumbsUp:

 :cheers:     :popcorn:


Hopefully !
Kind Regards
Achim

Offline Roger B

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Re: Bruce Macbeth Engine, European Version
« Reply #12 on: January 06, 2019, 08:29:22 AM »
That's off to a good start  :ThumbsUp:  :ThumbsUp:  :wine1:

How do you intend to set the valve clearances, eccentric bushes?

Will you solder (soft/hard) the crankcase?
Best regards

Roger

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #13 on: January 06, 2019, 09:03:50 AM »
That's off to a good start  :ThumbsUp: :ThumbsUp: :wine1:

How do you intend to set the valve clearances, eccentric bushes?

Will you solder (soft/hard) the crankcase?


Hi Roger,
currently no idea about the setting of the valve clearance, that is so far away for me at the moment.


Hard (silver) soldering is the task. I have bought some special solder with 590C to 620C degrees melting point and a small Chinese outdoor camping gas cooker for the preheating.
https://www.ebay.de/itm/Outdoor-Camping-Gaskocher-Tragbar-Butan-Gasherd-Hockerkocher-Campingkocher-3500W/392200008976?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
Kind Regards
Achim

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #14 on: January 06, 2019, 10:58:34 AM »
Still having massive problems with the swarfless machining process as it will be used in Boise, Idaho, but happy with the result.

Kind Regards
Achim

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #15 on: January 06, 2019, 03:03:44 PM »
My computer and the mill has been busy during the afternoon also.
3 of the 5 door frames are also done already.
 
Kind Regards
Achim

Offline Roger B

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Re: Bruce Macbeth Engine, European Version
« Reply #16 on: January 06, 2019, 04:17:38 PM »
That's a lot of machining  :ThumbsUp:  :ThumbsUp: Are you saving the swarf to sell?   :stir:
Best regards

Roger

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #17 on: January 15, 2019, 06:45:37 PM »
That's a lot of machining  :ThumbsUp: :ThumbsUp: Are you saving the swarf to sell?   :stir:


Hi Roger,
I would say still not enough swarf to get  it sold.




In our national forum we do have a long term thread about Fusion360.
For this thread I have made 2 videos which does show the simulation and also the real machining of one door frame of this engine build.
May be somebody is interested to see it, I have tried to keep the machining video short by a lot of cuts and focusing of only a part of each operation.
It starts with the measurement of the Z zero of the brass plate and also shows the tool changes.
No music, the original sound is also available.


First the simulation created by the CAM module of Fusion360


And second the machining.






Attached also some pictures of the current status of the BME crank case.
In one of the holes I have lost a 1,5mm drill bit,  so I had the remove it by grinding this area, that is not a big issue because of a later final machining at this part of the crank case will  done.
« Last Edit: January 15, 2019, 07:52:30 PM by fumopuc »
Kind Regards
Achim

Offline Roger B

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Re: Bruce Macbeth Engine, European Version
« Reply #18 on: January 18, 2019, 05:28:09 PM »
More progress  :ThumbsUp:  :ThumbsUp: Was the hole that 'failed' for lubrication?
Best regards

Roger

Offline Don1966

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Re: Bruce Macbeth Engine, European Version
« Reply #19 on: January 19, 2019, 01:28:50 AM »
Looks great Achim looking forward to the build and brass oh you know ........I..........like........  :Love:



 :cheers:
Don

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #20 on: January 21, 2019, 07:27:22 PM »
More progress  :ThumbsUp: :ThumbsUp: Was the hole that 'failed' for lubrication?
Hi Roger the purpose of these 2 mm holes are more simple.
They are only for the fixation of the entire building for the soldering process.
But at this place with the shown mishap, not necessary, nothing to fix there.

Kind Regards
Achim

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #21 on: January 21, 2019, 07:31:48 PM »
Looks great Achim looking forward to the build and brass oh you know ........I..........like........  :Love:



 :cheers:
Don




Hi Don, good to know that you are still watching the European activities.
Enjoy the brass design as long as you can, but finally it will disappear under a coat of paint or powder coating, sorry for that.
Kind Regards
Achim

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #22 on: January 21, 2019, 07:45:40 PM »
Hi everybody, a new experiment was done last weekend.
Milling a 197 x 98 x 10 mm aluminum plate without the usual fixture to the mill table.
The plate was fixed by some tape to a 20 mm victim plate ( is this the correct English expression ?)

A complete CAM program (G-Code) was created by Fusion360 for the whole job.
At the end I was happy about the result, even when it has been interrupted by a broken 3 mm flat end mill.
Kind Regards
Achim

Offline crueby

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Re: Bruce Macbeth Engine, European Version
« Reply #23 on: January 21, 2019, 08:16:40 PM »
Tooling plate?

Offline gbritnell

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Re: Bruce Macbeth Engine, European Version
« Reply #24 on: January 21, 2019, 08:22:55 PM »
I think the terminology you were looking for was 'sacrificial plate' because it gets tool marks on it so it's sacrificed.
gbritnell
Talent unshared is talent wasted.

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #25 on: January 21, 2019, 09:03:36 PM »
Thanks George, that's the word I was looking for. I think Google translater has given me not what I have expected.
Kind Regards
Achim

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #26 on: January 31, 2019, 04:44:33 PM »
There was a bigger adventure to get the plate solved from the sacrificial plate.
I try to describe the phrase "a pain in the a....." here in a polite way.

That was clearly my fault, because I have used to much tape and to much surface.
I had to use a torch and than the heat of nearly 90 C in the plate and a piece of hard wood and a hammer did the job.
Next to do, some milled holes at the other side of the plate and the small door on side of the crank case was also made in meantime.
« Last Edit: January 31, 2019, 06:02:39 PM by fumopuc »
Kind Regards
Achim

Offline crueby

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Re: Bruce Macbeth Engine, European Version
« Reply #27 on: January 31, 2019, 05:52:40 PM »
 :popcorn: :popcorn: :popcorn:

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #28 on: February 02, 2019, 04:39:11 PM »
Some more doors are made.
Here the collection of frames and doors so far.


Chris, thanks for watching.
Kind Regards
Achim

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #29 on: February 02, 2019, 04:40:17 PM »
.. and some more pictures.

Kind Regards
Achim

Offline Dave Otto

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Re: Bruce Macbeth Engine, European Version
« Reply #30 on: February 02, 2019, 07:46:23 PM »
Nice progress and great looking parts Achim!
I haven't commented on the last couple of updated by I have been following along.

Dave

Offline Admiral_dk

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Re: Bruce Macbeth Engine, European Version
« Reply #31 on: February 02, 2019, 08:26:33 PM »
You really has been busy, making parts for this project  :ThumbsUp:

Oh .... and Chis haven't been the only (quiet follower)  :cheers:   :popcorn:

Offline Kim

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Re: Bruce Macbeth Engine, European Version
« Reply #32 on: February 02, 2019, 09:04:07 PM »
Nope, there's been a lot of us quite followers, enjoying the show!  :popcorn: :popcorn: :popcorn:

Kim

Offline vcutajar

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Re: Bruce Macbeth Engine, European Version
« Reply #33 on: February 02, 2019, 09:29:57 PM »
Enjoying seeing your Fusion 360 and CNC videos.  Keep it up.

Vince

Offline Steamer5

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Re: Bruce Macbeth Engine, European Version
« Reply #34 on: February 03, 2019, 06:50:45 AM »
Hi Achim,
 Just caught up. Nice work, enjoying the videos!

Cheers Kerrin
Get excited and make something!

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #35 on: February 03, 2019, 07:45:10 AM »
Hi Dave, Per, Kim, Vince and Kerrin,
good to know that you all are still following my learning curve.
Thanks for watching.


Next to do, to clean the shop a bit, lots of aluminum swarf all over and to finish the the top plate.
I am doing some more thinking about the hard soldering job already.
Kind Regards
Achim

Offline Roger B

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Re: Bruce Macbeth Engine, European Version
« Reply #36 on: February 03, 2019, 07:59:46 AM »
Looking good  :praise2: Those doors will certainly put your CNC gasket cutting skills to good use  :)
Best regards

Roger

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #37 on: February 03, 2019, 08:21:11 AM »
Hi Roger,
I have had some thought about gaskets already, but to be honest, there will be nothing real to seal against.
Optical wise, may be a 0,1 mm gasket in the split line will be nice, but that will be a job for the plotter than, some long time in future.
Kind Regards
Achim

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #38 on: February 03, 2019, 07:22:59 PM »
Hi everybody,
some conventional milling  again.
The top plate, with its 3 taper each side, is now finished also .
Now is only the reinforcement of the lower frame missing.
« Last Edit: February 03, 2019, 08:09:50 PM by fumopuc »
Kind Regards
Achim

Offline Don1966

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Re: Bruce Macbeth Engine, European Version
« Reply #39 on: February 07, 2019, 09:05:26 PM »
Still with you Achim looking good!..... :ThumbsUp:



 :cheers:
Don

Offline crueby

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Re: Bruce Macbeth Engine, European Version
« Reply #40 on: February 07, 2019, 09:11:31 PM »
 :popcorn: :popcorn: :popcorn:

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #41 on: February 12, 2019, 06:40:04 PM »
Don and Chris, thank you.


During the last weekend I have done the first soldering attempt of the crank case.
The result is not perfect so far, in my eyes, but also not so bad at all.
A lot of heat was necessary to get it done.
My used silver solder has had a melting temperature between 590C and 640C.
To get some kind of basic heat, a cheap Chinese outdoor cocker was my selected tool to help.
Unfortunately these guys in Asia didnt know anything about the coming missuses, so I have to report that the integrated Piezo element for the lightening was not able to  resit the heat during the process.


Kind Regards
Achim

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #42 on: February 12, 2019, 06:43:21 PM »
After cooling down and some cleaning with citrus acid, I have detected three areas which are not in the way I would like to have it.
So I have to attack these a second time.
 
« Last Edit: February 12, 2019, 08:14:30 PM by fumopuc »
Kind Regards
Achim

Offline crueby

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Re: Bruce Macbeth Engine, European Version
« Reply #43 on: February 12, 2019, 07:40:46 PM »
Good result so far, one thing I would do differently is take it all outside! At least open the window right there, dont want to gas yourself with the combustion gasses, or melt/set fire to the cupboards above even. Even with fire brick, a lot of heat goes through them and also up to the ceiling, and carbon monoxide is nothing to mess with. For larger parts, it does take quite a bit more heat from a larger capacity torch, you need to get the parts up to temperature to melt the solder before the flux burns off. If you are going to be doing larger parts, well worth the investment in a larger torch, I love the Sievert ones with changeable tips that attach to the propane tank from an outdoor grill. And 'outdoor' is a key term...
 :popcorn: :popcorn: :popcorn:

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #44 on: February 12, 2019, 08:40:07 PM »
Hi Chris, this corner is prepared for some  soldering jobs. The big window , nearly 2 square meter is 1 meter beside.
The fire extingusher is under the table, right side at the picture and water left side 50 cm.
« Last Edit: February 12, 2019, 08:43:37 PM by fumopuc »
Kind Regards
Achim

Offline Don1966

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Re: Bruce Macbeth Engine, European Version
« Reply #45 on: February 12, 2019, 09:02:33 PM »
Nice attempt Achim and Chris is right you need fast concentrated heat especially to get those missed spots to take.

 :cheers:
Don

Offline Dave Otto

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Re: Bruce Macbeth Engine, European Version
« Reply #46 on: February 13, 2019, 01:03:07 AM »
That came out pretty good Achim, I'm sure with just a little more work you will be able to get it finished up to your satisfaction.

Dave

Offline Rustkolector

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Re: Bruce Macbeth Engine, European Version
« Reply #47 on: February 13, 2019, 03:50:36 AM »
Achim,
From your photos the torches you are using look like they use a butane/propane fuel mix which is not hot enough. You need 100% propane fuel and a larger torch as Chris has mentioned. Because brass draws heat away quickly, silver brazing is still difficult on large items if you don't have supplemental heat. One alternative to the latter is to use a proper brazing hearth with adequate heat. It should be constructed of soft insulating firebrick which has a high surface emissivity (emits heat by radiation) and a temperature rating of 1100 C or higher. These bricks are placed under and around the item being brazed and will conserve and radiate much of the heat applied. DO NOT use hard firebrick. It absorbs too much heat. Insulating firebrick is soft and chalky and is easily shaped for all sorts of brazing projects. Another method is to elevate the item being brazed on a piece of heavy gauge loose weave SS wire cloth so heat can be applied from all sides as well as under the item. No matter what the brazing setup, you still need adequate heat to do the job fast enough that the flux is not exhausted.

While it is not always possible, try to apply heat from the side opposite the flux and brazing material. From your photos, I think you can reduce the quantity of your silver brazing wire significantly. When it flows, it can go a long way if the joints are as tight as they should be. The silver braze material will flow to any fluxed surface so keep the flux in and near the joint.

I'm following your build with interest.
Jeff

Offline MJM460

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Re: Bruce Macbeth Engine, European Version
« Reply #48 on: February 13, 2019, 10:30:11 AM »
Hi Achim, a pity about that little gas stove.  I have one just like it as far as it is still possible to tell, and it was quite expensive here.  But the good news is that you dont have to feel guilty about taking parts from it to make your own gas fired burner for your next boiler.

It looks like a case of so near, yet so far on the soldering.  Ah well, if at first you dont succeed, try, try again!

Looking forward to the next steps, it is a nice looking engine.

 MJM460

The more I learn, the more I find that I still have to learn!

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #49 on: February 17, 2019, 03:16:50 PM »
Hi everybody, thanks for watching and all the good advices.
In the meantime the job is done and everything is as I would like to have it seen first time already.
Last week, after a couple of days, I have got my second camping outdoor cooker for EUR 16,99 !
So I could attack with double basic heat, which was available already after 10 minutes now.
I have resoldered 5 places in less than 20 Minutes.
Also after some cleaning I could not find any issues.
Kind Regards
Achim

Offline Don1966

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Re: Bruce Macbeth Engine, European Version
« Reply #50 on: February 17, 2019, 04:20:27 PM »
Awesome Achim glad to hear!..,. :ThumbsUp:


 :cheers:
Don

Offline crueby

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Re: Bruce Macbeth Engine, European Version
« Reply #51 on: February 17, 2019, 05:06:27 PM »
Excellent! Always goes much better with proper heat.
 :popcorn: :popcorn: :popcorn:

Offline steamer

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Re: Bruce Macbeth Engine, European Version
« Reply #52 on: February 17, 2019, 05:17:30 PM »
Good to see Achim!   I always get so stressed out with big SS solder jobs....when your pushing the setup, you never know for sure what's going to happen....

Glad it got done!!!   :praise2: :cartwheel:

Dave
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Damned ijjit!

Offline Roger B

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Re: Bruce Macbeth Engine, European Version
« Reply #53 on: February 17, 2019, 05:18:49 PM »
Excellent  :praise2:  :praise2:  :wine1:
Best regards

Roger

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #54 on: February 17, 2019, 07:59:16 PM »
Don, Chris, Dave and Roger, thanks.


In the meantime the little discounter toaster oven had to work very hard.
I took him nearly two hours to get the crank case to over 200 C for the melting of my soft solder paste.
But finally also this job seems to be done.
The door frames are in place now.
Kind Regards
Achim

Offline Dave Otto

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Re: Bruce Macbeth Engine, European Version
« Reply #55 on: February 17, 2019, 10:32:39 PM »
Looks great Achim!

Dave

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #56 on: February 24, 2019, 08:47:43 AM »
Hi Dave, thanks.


In the meantime the assembly machining is ongoing.
First set up was made to the reference of the 3 crankcase webs at the bottom.
These should be in good relationship to the temporary clamped bar in the later crank shaft bearing places, crankshaft center.
An adjustment of 0,2 mm in Z has given a good surface at the top of the crankcase.
It was flipped around and I have machined the lower surface to the necessary hight, in relationship to the crankshaft center.
Than flipping it around another time and doing the same with the crankcase top.
Next to do was, the whole story moved to the lathe and machining the side plates to its final dimension, referring to the middle web at the black cross marked point.
Kind Regards
Achim

Offline Admiral_dk

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Re: Bruce Macbeth Engine, European Version
« Reply #57 on: February 24, 2019, 08:52:42 PM »
Looks like your build-up crankcase cleans up nicely Achim - must be a relieve to confirm this :cheers:

Offline Dave Otto

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Re: Bruce Macbeth Engine, European Version
« Reply #58 on: February 24, 2019, 11:15:49 PM »
Crankcase is looking great Achim.
Nice to see the clean up cuts coming out so well!

Dave

Offline Art K

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Re: Bruce Macbeth Engine, European Version
« Reply #59 on: February 24, 2019, 11:37:04 PM »
Achim,
I just got caught up. Great job doing the silver solder, it does seem like a big job. Great work!
Art
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline Don1966

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Re: Bruce Macbeth Engine, European Version
« Reply #60 on: February 25, 2019, 12:01:37 AM »
Awesome work Achim!...  :praise2:

 :popcorn:
Don

Offline Kim

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Re: Bruce Macbeth Engine, European Version
« Reply #61 on: February 25, 2019, 02:34:26 AM »
I always consider the soldering a success after it cleans up and looks good.  And your's looks great!
Kim

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #62 on: March 02, 2019, 08:14:31 PM »
Per, Dave Art, Don and Kim thanks for the friendly comments.

The computer was busy again and most of the top is done.
I do love these "adaptive cleaning" in Fusion360 CAM.
Also the deburing, made by the CNC mill, is more and more one of my favorites.
« Last Edit: March 03, 2019, 04:30:04 AM by fumopuc »
Kind Regards
Achim

Online sco

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Re: Bruce Macbeth Engine, European Version
« Reply #63 on: March 02, 2019, 09:27:43 PM »
Achim,

This is a really complex fabrication and you are making it look easy - keep it up!

Simon.
Ars longa, vita brevis.

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #64 on: March 10, 2019, 03:24:46 PM »
Thanks Simon.


Today was the day to make the crankcase bearing places.
I have never used a long boring bar before, so it was time to make some.
Two bars where made, one the conventional way for a 6 mm round HSS bit and one for a Microbore Cartridge, as Jo, Jason and Mike have used/purchased it.
The rough-machining was done with the conventional type.
When the hole was big enough for the Microbore cartridge, I have swapped to the other boring bar and made some experiments to get familiar with it.
Nearly finished with the operation 41,26 mm was measured in the hole, 41,28 mm was the target.
So I felt encouraged to try the 0,02 mm adjustment, which was successful.
Kind Regards
Achim

Offline Dave Otto

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Re: Bruce Macbeth Engine, European Version
« Reply #65 on: March 10, 2019, 05:13:38 PM »
Nice!

Dave

Offline Kim

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Re: Bruce Macbeth Engine, European Version
« Reply #66 on: March 10, 2019, 05:17:39 PM »
Looks like you got it figured, Achim!  That looking really good!
Kim

Offline Don1966

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Re: Bruce Macbeth Engine, European Version
« Reply #67 on: March 10, 2019, 06:59:47 PM »
Cool setup Achim as long as it gets results. ....... :ThumbsUp:


 :popcorn:
Don

Offline Roger B

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Re: Bruce Macbeth Engine, European Version
« Reply #68 on: March 11, 2019, 12:04:18 PM »
Excellent  :praise2: You've got the line boring sorted out  :ThumbsUp: :wine1: I will have to deal with that for the next engine  :thinking:
Best regards

Roger

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #69 on: April 14, 2019, 04:10:34 PM »
Dave, Kim, Don and Roger, thanks for taking the time to follow my build.


Today some minor progress at the crank case.
The holes in the plates, previously used for the soldering fixation, are closed now and also the space for the lower bevel gears are made now.
Kind Regards
Achim