Author Topic: Hoglet, an European Version (Read 16059 times)

fumopuc · « **on:** January 29, 2017, 07:49:34 AM »

Hi everybody, over Christmas I have had some days off and some continuous shop time was available. I thought it was time to have a small brake with the Snow engine and to do something different where the progress is visible faster.
Last year in spring time I have purchased some gears, pins, bearing bushes and a ignition system for the Hoglet.
The metric conversion of the shafts and fasteners was also done last year in the CAD, so I could start with the machining of some parts.
I don`t want to bore you with build log #10236 of this engine, so here only some pictures of the current state.
The plates were machined by the CNC mill, also the con rods out off 7075. The cam shaft was made with the boring head.

vcutajar · « **Reply #1 on:** January 29, 2017, 08:01:55 AM »

Interesting. A Metric hoglet. Willbe following along.

Vince

Roger B · « **Reply #2 on:** January 29, 2017, 09:00:28 AM »

I will be following along

There are so many variations of this engine

Nick_G · « **Reply #3 on:** January 29, 2017, 11:05:29 AM »

.
Excellent. Great start and progress.

Will be running in next to no time by the look of it.

Nick

zeeprogrammer · « **Reply #4 on:** January 29, 2017, 02:41:06 PM »

I'll be watching closely.
This is one of those 'someday' projects for me.

Dave Otto · « **Reply #5 on:** January 29, 2017, 05:23:24 PM »

Looks great Achim!

Dave

Trevorc · « **Reply #6 on:** January 29, 2017, 05:48:35 PM »

Nice to see the progress being made, i am at similar stage and will post some photos when i can work out how to do it.
Purchasing the Imperial size items is now very expensive in UK now but fortunately had a friend from USA who brought me the items. Buying the clutch unit was a bit of a problem, the vendor is very difficult to contact.
TrevorC

Tennessee Whiskey · « **Reply #7 on:** January 29, 2017, 08:46:26 PM »

You sneaky devil; been hiding this one from us. Great looking stuff

I think a V-twin may be my next build. I just received plans for the George Britnell version and now I know why he was voted "Craftsman of the Year " OMG. I can't wait to hear this one running. Eating

and

Cletus

Tjark · « **Reply #8 on:** January 30, 2017, 08:39:51 AM »

Achim, you have made a good start.
Will following along your build.
Maybe I will have the time to build this one to, a very nice engine.

Tjark.

fumopuc · « **Reply #9 on:** February 20, 2017, 04:24:43 PM »

Hi Everybody, thank you so much for following "sneaky devils" build log of the Hoglet #10236.
I appreciate it very much that you folks are still with me, even if it is a very well known engine.
The adaptation to the metric shafts, bearing bushes and fasteners was successful until now.
My favourite supplier for the crank shaft steel and cast iron has had a delivery delay, so I have started with kick starter in the mean time.
And yes, the con rods are also finished.

steamer · « **Reply #10 on:** February 20, 2017, 05:05:04 PM »

Coming along Great Achim!

Dave

fumopuc · « **Reply #11 on:** May 07, 2017, 10:53:51 AM »

Thanks Dave.

Hi everybody, after playing around with Fusion 360 and some other things during the last weeks and month, a small up date of my Hoglet so far.
Not a big issue, but I am happy that I am where I are with the crank mechanism and the timing assembly.
Next to do, the cylinders and pistons, everything already redrawn in Fusion 360 (what a fun).
[youtube1]https://youtu.be/ncJ8F9cKGsI[/youtube1]

vcutajar · « **Reply #12 on:** May 07, 2017, 11:26:43 AM »

Vince

gbritnell · « **Reply #13 on:** May 07, 2017, 12:51:32 PM »

Great to see you back on the boards Achim! It looks like the Hoglet build is up to your usual great standards. I'm awaiting the first pops.
gbritnell

fumopuc · « **Reply #14 on:** May 07, 2017, 01:04:02 PM »

Hi George and Vince, good to know you are still watching.
Currently I am fighting with the taper of the Snow flywheel, it does not do the clamping job as expected and I try to improve it.

kvom · « **Reply #15 on:** May 07, 2017, 01:15:36 PM »

Shouldn't it be called a schweinlet?

Good progress there.

Dave Otto · « **Reply #16 on:** May 07, 2017, 04:24:55 PM »

Looks great Achim!

Dave

fumopuc · « **Reply #17 on:** May 07, 2017, 06:22:06 PM »

Quote from: kvom on May 07, 2017, 01:15:36 PM

Shouldn't it be called a schweinlet?

Good progress there.

Hi Kirk, if I unterstand it right, than means hoglet somethings like this
https://alisonjoymabee.files.wordpress.com/2010/04/hoglet.jpg
We call it an "Igel".
I could imagine that you have had a little pig (Schwein) in your mind, that is called a "Ferkel" in Germany.
Never the less, thanks for watching and the friendly words.
It is always good to know that you guys from the other side oft the pond are still watching.

crueby · « **Reply #18 on:** May 07, 2017, 08:33:32 PM »

Interesting how badly things translate sometimes! Over here, the Harley motorcycles with v twins known as Hogs would imply one of our very large pigs, and we would think that a hoglet would be a baby pig.

The term Hoglet, as you rightly point out, refers to a baby hedgehog, a very different animal!

Maybe for us the baby pig would be a Piglet, but that is the Winnie The Pooh character:

not the baby pig

kvom · « **Reply #19 on:** May 07, 2017, 11:24:04 PM »

A baby wild pig is marcassin in French. We served that at our wedding reception.

90LX_Notch · « **Reply #20 on:** May 08, 2017, 03:44:50 AM »

Following along Achim.

-Bob

Roger B · « **Reply #21 on:** May 08, 2017, 09:00:52 AM »

Glad to see some more progress

What's the problem with the Snow engine flywheel?

fumopuc · « **Reply #22 on:** May 08, 2017, 03:38:19 PM »

Quote from: Roger B on May 08, 2017, 09:00:52 AM

Glad to see some more progress

What's the problem with the Snow engine flywheel?

Hi Roger, hopefully none anymore.
http://www.modelenginemaker.com/index.php/topic,4060.msg148526.html#new
Now it seams to be fixed.

fumopuc · « **Reply #23 on:** May 08, 2017, 03:53:14 PM »

Quote from: crueby on May 07, 2017, 08:33:32 PM

Interesting how badly things translate sometimes! Over here, the Harley motorcycles with v twins known as Hogs would imply one of our very large pigs, and we would think that a hoglet would be a baby pig.
The term Hoglet, as you rightly point out, refers to a baby hedgehog, a very different animal!
Maybe for us the baby pig would be a Piglet, but that is the Winnie The Pooh character:
not the baby pig

Hi Chris and Kirk, thanks for leading me into the right direction.
I got it now and do understand what Kirk means with "Schweinlet" and I also understand finaly why this modell engine is called a Hoglet.
I really didn´t know the term Hog for a Harley Davidson Bike.
So what to do with this new Information ?
I went on floor deeper in our office to meet a college who is riding a "Hog", and called him a "Schwein" rider, he was not amused.

crueby · « **Reply #24 on:** May 08, 2017, 04:17:02 PM »

Quote from: fumopuc on May 08, 2017, 03:53:14 PM

Quote from: crueby on May 07, 2017, 08:33:32 PM
Interesting how badly things translate sometimes! Over here, the Harley motorcycles with v twins known as Hogs would imply one of our very large pigs, and we would think that a hoglet would be a baby pig.
The term Hoglet, as you rightly point out, refers to a baby hedgehog, a very different animal!
Maybe for us the baby pig would be a Piglet, but that is the Winnie The Pooh character:
not the baby pig

Hi Chris and Kirk, thanks for leading me into the right direction.
I got it now and do understand what Kirk means with "Schweinlet" and I also understand finaly why this modell engine is called a Hoglet.
I really didn´t know the term Hog for a Harley Davidson Bike.
So what to with this new Information ?
I went on floor deeper in our office to meet a college who is riding a "Hog", and called him a "Schwein" rider, he was not amused.

Tennessee Whiskey · « **Reply #25 on:** May 08, 2017, 08:54:23 PM »

Achim, I ride an old Hog also; maybe he thought you meant Schwinn rider; as in the bicycle. Now that would rankle me

:

Cletus

Perry · « **Reply #26 on:** May 09, 2017, 09:56:36 PM »

Great to see another hoglet being build.. It's on my "list" too

And being "H.O.G." rider too (flsts) it was to my surprise too to find out that hoglet -being a V-twin is not meant as HOG "baby" but is totally different animal instead..

Entertaining discussion indeed

fumopuc · « **Reply #27 on:** August 15, 2017, 07:14:38 PM »

Hi everybody, thanks for watching.
Getting my copy of Fusion 360 downloaded at beginning of April, I thought it was time to improve my CAD skills by doing a real project.
The crank drive and kick starter unit was already manufactured, but all the other parts like cylinders, heads and valve train parts were still waiting for my metric conversion, so a good opportunity to do it in Fusion 360. When the first modelling and drawings were done, I got the feeling it was time to try a virtual assembly.
To do this, I have started step by step to create also the already manufactured parts in Fusion 360.
Everything worked a treat and the next desire was born, how to make a animation.
So today we are here.

<a href="https://www.youtube.com/watch?v=qPoo8wZaQrY" target="_blank">http://www.youtube.com/watch?v=qPoo8wZaQrY</a>
It is really fun to learn the usage of this software.

b.lindsey · « **Reply #28 on:** August 16, 2017, 01:27:29 AM »

Very nice Achim. You have learned a lot in a short amount of time. Love the animation.

Bill

fumopuc · « **Reply #29 on:** October 29, 2017, 07:27:44 PM »

Hi everybody, I have been quiet but not lazy.
Some progress at the Hoglet project.
Cylinders are made from cast iron, what a mess.
Followed by the pistons and the cylinder heads, also from cast iron, again another mess.
To keep everything in the right angle is a bit tricky, the fixture, recommended by Mr.Cox was a big help.

Dave Otto · « **Reply #30 on:** October 30, 2017, 12:10:02 AM »

Nice Work Achim!

Dave

gbritnell · « **Reply #31 on:** October 30, 2017, 12:06:27 PM »

Hi Achim,
I've been following along with your Hoglet build.
Here's something I found when building my V-twin engine that might influence the remaining design of your engine. I built my engine as a 90 degree V-twin basically for the fact that it would be smoother running than a 45 degree engine, which I can't say made much of a difference. When I first got it built and running I would start it up and after a couple of minutes it would start to hesitate or run erratically. I would adjust the fuel mixture needle a little richer and the engine would smooth out. At this point after another 30 seconds the engine would start doing the same thing and by richening the needle would again smooth out. Finally the engine would stall and it wouldn't restart. After letting it sit for some time the engine would start up and run rich so I would adjust the needle back towards lean and everything was good but after a few minutes the same symptoms would appear.
I was running the engine for a friend and he remarked that when the engine started to hesitate that the fuel in the clear fuel line could be seen pulsating away from the carb.
What was happening was the manifold and carb were getting hot from the heat in the heads and causing a vapor lock condition. By opening the needle it was momentarily allowing more fuel to flow until more heat was generated.
To remedy the condition I pulled the manifold off and machined .03 from each end. I then made a Corian spacer to insulate the manifold from the head. My heads and intake are both made from aluminum.
I have seen quite a few Hoglet videos and the engines seem to run well but I don't know for what period of time. Being as they are 45 degree engines the path to the carb is even shorter than my engine so I would think that they would be prone to the same heat conditions as mine.
I'm telling you this so that maybe you could make some kind of provision to insulate the manifold from the heads before you get to that point in the build.
gbritnell

fumopuc · « **Reply #32 on:** October 30, 2017, 07:11:24 PM »

Hi George, thank you very much for taking the time to report about your experience with this type of model engine.
I appreciate it very much, that all this knowledge is available in this forum and guys like you share it with all of us.
Today I have started to make the valves. If that is finished, next job will be the painting of the cylinder heads followed by making the intake manifold.
At my metric adapted design it would be difficult to add some Corian spacers but there should be a possibility to insulate the carb by a Corian adapter.
I will see what could be done, it is good to know that there is a point to watch.

fumopuc · « **Reply #33 on:** October 30, 2017, 07:12:42 PM »

Quote from: Dave Otto on October 30, 2017, 12:10:02 AM

Nice Work Achim!

Dave

Hi Dave, thanks for watching.

Florian Eberhard · « **Reply #34 on:** October 30, 2017, 07:32:08 PM »

Hi Achim

I think you could also use some fabric-base laminate (=Hartgewebe) since this is available as round stock (or tubes!) to insulate your carburetor and I guess this is a bit stronger than corian.

Florian

Dave Otto · « **Reply #35 on:** October 30, 2017, 07:36:16 PM »

Quote from: Florian Eberhard on October 30, 2017, 07:32:08 PM

Hi Achim

I think you could also use some fabric-base laminate (=Hartgewebe) since this is available as round stock (or tubes!) to insulate your carburetor and I guess this is a bit stronger than corian.

Florian

It would look pretty cool too!

Dave

fumopuc · « **Reply #36 on:** October 30, 2017, 08:24:28 PM »

Quote from: Florian Eberhard on October 30, 2017, 07:32:08 PM

Hi Achim

I think you could also use some fabric-base laminate (=Hartgewebe) since this is available as round stock (or tubes!) to insulate your carburetor and I guess this is a bit stronger than corian.

Florian

Hi Florian, also a good idea and easy to get.

fumopuc · « **Reply #37 on:** November 01, 2017, 07:13:06 PM »

A bit more progress was made, because of some extra bank holidays in the south of Germany.
Valves are made and also the valve seat machining in the heads is finished.
Valve seats are also made now and the usual valve grinding operation with final vacuum test.
Some paint and a hopefully final assembly of the cylinder heads.

sco · « **Reply #38 on:** November 01, 2017, 07:27:04 PM »

Looks super crisp Achim!

Hope it runs as good as it looks,

Simon.

fumopuc · « **Reply #39 on:** November 19, 2017, 11:45:51 AM »

Hi Simon, thanks for the friendly words. Compression is not bad and the engine is bouncing, so hopefully we are at the right way.

In the meantime I have made the inlet manifold with the carburator adapter, made from Phenol fabric-base laminate.
Thanks again to George Britnell and Florian with the advice to watch the thermal isolation.
And here we are today.

Roger B · « **Reply #40 on:** November 19, 2017, 02:24:45 PM »

Excellent

The advice regarding carburettor temperature/insulation is good. I was only able to get my vertical engine running properly once I made a Delrin adaptor to keep the temperature down.

Kim · « **Reply #41 on:** November 19, 2017, 03:45:15 PM »

That looks really sharp, Achim! Just beautiful!
Kim

fumopuc · « **Reply #42 on:** November 19, 2017, 04:18:36 PM »

Thanks, Roger and Kim..

Dave Otto · « **Reply #43 on:** November 19, 2017, 05:13:31 PM »

Very nice!

Dave

fumopuc · « **Reply #44 on:** December 06, 2017, 07:26:13 PM »

Thanks Dave, good to know you are still watching.

We are close now.
Ignition, fuel cell and two proper exhaust pipes are missing.
A first fire up could be tried with a temporary fuel cell and this shown exhaust.

vcutajar · « **Reply #45 on:** December 06, 2017, 07:29:44 PM »

Keeping my fingers crossed.

Vince

90LX_Notch · « **Reply #46 on:** December 06, 2017, 09:51:57 PM »

Quote from: vcutajar on December 06, 2017, 07:29:44 PM

Keeping my fingers crossed.

Vince

Me too Achim.

-Bob

Admiral_dk · « **Reply #47 on:** December 06, 2017, 10:29:24 PM »

Nice engine Achim

- waiting for the report on first pop

fumopuc · « **Reply #48 on:** December 10, 2017, 05:35:38 PM »

Hi Vince and -Bob, thanks for crossing your fingers, it was very helpful.

Hi Admiral, below the third run. Run #1 was ok, but I lost my temporary fixation of the Hall-Sensor.
During run #2 I have lost the compression at cylinder #1.
And here is run #3, the first Hoglet running as a single cylinder.

<a href="https://www.youtube.com/watch?v=Ii1edq9H3k8" target="_blank">http://www.youtube.com/watch?v=Ii1edq9H3k8</a>

Roger B · « **Reply #49 on:** December 10, 2017, 05:43:23 PM »

Excellent

and I can almost put a face to a name

Hopefully you be able to quickly solve the loss of compression (I know the feeling

)

vcutajar · « **Reply #50 on:** December 10, 2017, 08:28:35 PM »

Quote

the first Hoglet running as a single cylinder.

I am sure you will quickly find the reason why you lost compression on the other cylinder and it will run even better.

Vince

fumopuc · « **Reply #51 on:** December 16, 2017, 04:38:48 PM »

Roger, Vince thanks for watching.

In the meantime I realized, that paper is not a good idea for the Hoglet head gaskets.
Now it is assembled with none and it is running like a Hog now.
[youtube1]https://youtu.be/ndNI4hRgJHE[/youtube1]

crueby · « **Reply #52 on:** December 16, 2017, 06:31:56 PM »

Very nice!

When do you start on the rest of the motorcycle?!

If it runs that well with no gaskets, are they really needed? Must have a very good fit on the parts.

Admiral_dk · « **Reply #53 on:** December 16, 2017, 06:36:10 PM »

Congratulations on a fine runner

I seem to remember that it is not supposed to use any gasket ....

sco · « **Reply #54 on:** December 16, 2017, 07:54:23 PM »

Great runner Achim!

Simon.

vcutajar · « **Reply #55 on:** December 16, 2017, 09:22:11 PM »

Nice one Achim. A fine runner.

Vince

Tjark · « **Reply #56 on:** December 16, 2017, 09:31:45 PM »

Hello Achim,

I have missed a lot off your build.
Made a catchup this evening and have to say it’s a great build.
Very good runner indeed.
How is the progress on the snow?

Tjark.

Kim · « **Reply #57 on:** December 17, 2017, 12:32:52 AM »

Impressive work there, Achim! It runs very nicely for sure!
Kim

b.lindsey · « **Reply #58 on:** December 17, 2017, 12:58:32 AM »

A great runner Achim. Well done

Bill

yogi · « **Reply #59 on:** December 17, 2017, 02:15:17 AM »

Fantastic Achim!!!

Congrats on the nice runner!

petertha · « **Reply #60 on:** December 17, 2017, 04:56:54 AM »

Quote from: fumopuc on November 01, 2017, 07:13:06 PM

Valves are made and also the valve seat machining in the heads is finished.
Valve seats are also made now and the usual valve grinding operation with final vacuum test.

Nice work!
I'm always interested to see how others do their valve assemblies.
- what material are the valve seats made from?
- did you lap the valves in a dedicated seating pot or the valves within their respective seats
- how about your vacuum test, do you look for a long term hold or if it decays to ambient after X amount of time?
- what kind of lapping compound?

fumopuc · « **Reply #61 on:** December 17, 2017, 06:18:11 AM »

Quote from: petertha on December 17, 2017, 04:56:54 AM

Quote from: fumopuc on November 01, 2017, 07:13:06 PM
Valves are made and also the valve seat machining in the heads is finished.
Valve seats are also made now and the usual valve grinding operation with final vacuum test.

Nice work!
I'm always interested to see how others do their valve assemblies.
- what material are the valve seats made from?
- did you lap the valves in a dedicated seating pot or the valves within their respective seats
- how about your vacuum test, do you look for a long term hold or if it decays to ambient after X amount of time?
- what kind of lapping compound?

Hi Peter,
the valve seats are part of the cylinder head which is made from cast iron, German GG25 (EN-GJL-250)
The valve guides are made from brass, German MS58 (CuZn39Pb3/CW614N (2.0401)/EN 12164) you can get it anywhere here.
The valves are made from stainless steel, German 1.4305 (X8CrNiS18-9 (DIN EN 10088-1))
At Reply #37 is a picture of the just machined seats in one head, below some additional pictures of the lapping process.
The used compound is #3 of this chart.
http://www.gloeckler.com/Products/Lapping-Pastes/Lapping-Pastes-oilsoluble/EN_index_1316.html
Anywhere here in the forum or at the Model Engine Builder magazine, I have learned that the vacuum should be kept for minimum 10 seconds until it is complete gone again. That´s my easy way to do it.
At the picture of the head and the valve, always right side is already lapped. There is a slight grey colour visible at the respective area.

fumopuc · « **Reply #62 on:** December 17, 2017, 06:38:20 AM »

Hi Chris, I could imagine that it will never see a head gasket again, thanks for watching. No bike scheduled yet.

Hi Peer, thanks. You are right, Mr Cox has never used a gasket.

Hi Simon, thanks for watching.

Hi Vince, thanks. Good to know you are still following.

Hi Tjark, good to know that you enjoyed the thread. The Snow will be attacked soon again, may be the shop gnomes have lost their interests in the sabotage in the meantime.

Kim, Bill, Yogi, thank you very much for watching and given friendly comments.

It´s at great and very friendly community here and it is a real pleasure to be part of it.[size=78%] [/size]

Roger B · « **Reply #63 on:** December 17, 2017, 07:13:49 AM »

Splendid

We had 20cm of snow yesterday so R&D is remaining closed

fumopuc · « **Reply #64 on:** December 17, 2017, 07:57:40 AM »

Thanks Roger.
Here are only 5 mm of snow from last night and it is slowly disappearing already.
I am very happy with my test bench on the working table, directly under the window in the roof, so I am very close to any German rules of "Arbeitssicherheit", in any case in my understanding.

fumopuc · « **Reply #65 on:** December 25, 2017, 08:00:55 AM »

Merry Xmas for everybody. Enjoy your time with the family and all the goodies from Santa.

The Hoglet has got a small Xmas update.
It is supposed to run with its own fuel tank next time.

Also an exhaust was made in accordance with the drawings of Mr Cox.
Bending was done with a sand filling in the annealed 10x0,5 mm brass tubes.

fumopuc · « **Reply #66 on:** December 28, 2017, 03:48:07 PM »

Hi everybody,
here a final Video and some pictures of the engine, ready to be stored.

<a href="https://www.youtube.com/watch?v=h6HH5gfJLE4" target="_blank">http://www.youtube.com/watch?v=h6HH5gfJLE4</a>
It was a real pleasure to build this engine.
Thank you Mr Cox for sharing your drawings.
Hopefully he has a nice place up there in the sky where he can watch all the copies of his engines around the world.

Kim · « **Reply #67 on:** December 28, 2017, 05:36:30 PM »

That is great, Achim! It purrs like a kitten!
Kim

Jo · « **Reply #68 on:** December 28, 2017, 05:56:21 PM »

I do like that Achim

I had tried to take the Hoglet off my build list as its made of bar stock

but it might have to go back on it again.

Jo

crueby · « **Reply #69 on:** December 28, 2017, 06:33:31 PM »

Very well done!

Dave Otto · « **Reply #70 on:** December 28, 2017, 06:48:55 PM »

She looks, runs, and sounds great!
Very nice work Achim.

Dave

vcutajar · « **Reply #71 on:** December 28, 2017, 08:03:56 PM »

Great runner Achim.

Vince

ShopShoe · « **Reply #72 on:** December 29, 2017, 01:34:45 PM »

Sweet Success.

I have enjoyed every finished version of this engine through the years. I enjoyed your build log and appreciate the things you did to bring the engine to this point.

Congratulations and Thank You for Posting,

ShopShoe

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Author Topic: Hoglet, an European Version (Read 16059 times)