Author Topic: Bodging with Boris........  (Read 7103 times)

Offline fcheslop

  • Jr. Member
  • **
  • Posts: 90
  • Country: gb
Re: Bodging with Boris........
« Reply #25 on: October 18, 2016, 05:44:03 PM »
]I can never understand it either . Is it the builder knows better and uses whats available not knowing that the ratio has to be near ish
Although some well known designers have goofed in the past just look at ET Westburys version of the Robinson the ratio is badly wrong and he had not appreciated the rather unusual displacer and the cold well  the full size one had and yet published drawings :doh:Thats why the one I started now resides under the bench with the spiders unless it finds a new home
Ah well we live and learn although the older I become the less I know
Just had a good glass breaking day :palm:
Good luck with her .Just love that conrod set up :Doh:

cheers
« Last Edit: October 19, 2016, 02:54:15 PM by fcheslop »
History is scarcely capable of preserving the memory of anything except myths

Offline Stilldrillin

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4843
  • Country: gb
  • Staveley, Derbyshire. England.
Re: Bodging with Boris........
« Reply #26 on: October 18, 2016, 06:01:09 PM »
That made interesting reading! (If you're into these frustrating things)........   :thumbup:
 Seems, even the engine heirarchy don't realise the laws of physics!  :palm:

Are you teasing test tubes, again?  :loco:

Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline fcheslop

  • Jr. Member
  • **
  • Posts: 90
  • Country: gb
Re: Bodging with Boris........
« Reply #27 on: October 18, 2016, 06:17:34 PM »
Oh I breaking test tubes again on the the Ridders Wiggers. Had everything nicely cut then picked up a bit of paper forgetting Id safely wrapped the hot cap in it :palm: they dont bounce
Back to the drawing board
That exhaust pipe you snaffled whats the OD as Im looking for some 1 7/8 for the orphan or may use a barby grill block.
Hit lucky for once and found some heavy walled stainless seamless tubing for the Ryder so should get back on with it shortly and yep still blaming you :D
cheers
History is scarcely capable of preserving the memory of anything except myths

Offline Stilldrillin

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4843
  • Country: gb
  • Staveley, Derbyshire. England.
Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline fcheslop

  • Jr. Member
  • **
  • Posts: 90
  • Country: gb
Re: Bodging with Boris........
« Reply #29 on: October 19, 2016, 02:50:34 PM »
Thanks :thumbup:
We have a runner.Just needs stripping/cleaning and getting rid of the oil in the glass dispacer :doh: May be simpler to make another with a blind hole.
The tube is for the Ryders displacer.
Good luck with the rebuild Il stop clogging up youre thread :beer:
History is scarcely capable of preserving the memory of anything except myths

Offline Stilldrillin

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4843
  • Country: gb
  • Staveley, Derbyshire. England.
Re: Bodging with Boris........
« Reply #30 on: November 06, 2016, 09:39:25 AM »

Managed to get some Boris work done, over the past week.

I'm used to catching up on household, gonna do's. But, after all this, "almost crocked" time, I'm having trouble with, whatabout's, whenyergonna's, and havyerforgotten's.......  :bang:

A piece of 1/4" brass, spigoted/ screwed to the end of 8mm dia bar.......




6mm, far end. 4mm, this end. 110mm apart.......




Taper turn. Mill little end flats........




That looks better, to me........




Graphite piston. Roughed out, and parted off. (Most of the mucky work done)......




Thanks for looking in!

David.
Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline Stilldrillin

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4843
  • Country: gb
  • Staveley, Derbyshire. England.
Re: Bodging with Boris........
« Reply #31 on: November 06, 2016, 09:49:43 AM »
I've got a bit behind, with the write up...... :Doh:


Delrin mandrel, to mount piston.......




Held on, with M6 caphead. Finish turned, until it almost enters the bore. Mucky stuff!




Six inch rule. Supporting reversed emery cloth.

Polish the outer end o/d, until the piston enters the cylinder. Then, polish the centre section. allowing it to enter some more.

Then finally, polish the skirt area. Allowing full length entry to cylinder.......




Obviously, both hands needed for polishing control. I needed my left hand for the camera!

Reversed emery cloth is used for polishing graphite.
Fine emery cloth. Correct way around, for brass etc.

The steel rule backing, gives much better control, than fingers....

Thanks for looking in!

David. :thumbup:
Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline Stilldrillin

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4843
  • Country: gb
  • Staveley, Derbyshire. England.
Re: Bodging with Boris........
« Reply #32 on: November 06, 2016, 09:55:03 AM »

I slotted and cross drilled/ reamed. The clevis.......




Drill/ tapped M4 through. Reducing shank to 6mm dia, to locate in piston......




That looks better, than original........




This afternoon, I finished the piston/ cylinder fit to each other. Then sleevelocked the cylinder liner in place, in the original cylinder.

Assembly, tomorrow. Wonder if we'll have a runner, soon?  :scratch:

Thanks for looking in!  :thumbup:

David.
Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline Stilldrillin

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4843
  • Country: gb
  • Staveley, Derbyshire. England.
Re: Bodging with Boris........
« Reply #33 on: November 06, 2016, 12:25:50 PM »
We've now caught up to, last Friday.  :thumbup:

Finished piston/ rod assembly........




Commence assembly.........




Not happy with the offset scotch yoke, link. It wants to bend the  unsupported displacer shaft.......




Now, we just need a flywheel.......




I have a suitable casting. Though, it is made of unknown bronze. Rather tough stuff!  :palm:

That is a 4" dia chuck. I like to make my machinery work hard, when necessary.........

 


The belt had done 3 years, since I modded the lathe to lower the gearing. Can't grumble! 

All good Engineers have a spare! It was up and running, after 20 mins fumbling. But, I'd had enough, for one day........    :bang:

Thanks for looking in!  :thumbup:

David.
Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline Stilldrillin

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4843
  • Country: gb
  • Staveley, Derbyshire. England.
Re: Bodging with Boris........
« Reply #34 on: November 06, 2016, 05:28:51 PM »
Finally got the flywheel, proof turned. Sufficient to be in balance.......

Put a small light under. And, after a few seconds.........

<a href="http://www.youtube.com/watch?v=fUDvX5kEnQw" target="_blank">http://www.youtube.com/watch?v=fUDvX5kEnQw</a>


It's a great feeling!   :D

David.
Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline sbwhart

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 3487
  • Country: gb
  • Smile, Be Happy, Have Fun and Rock Until you Drop
Re: Bodging with Boris........
« Reply #35 on: November 07, 2016, 02:44:34 AM »
Blimy Dave your knocking these engines out like drinking tea :D

Great Job

Stew
A little bit of clearance never got in the road
 :wave:

Location:- Crewe Cheshire

Offline Stilldrillin

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4843
  • Country: gb
  • Staveley, Derbyshire. England.
Re: Bodging with Boris........
« Reply #36 on: November 07, 2016, 03:25:31 AM »
Blimy Dave your knocking these engines out like drinking tea :D

Great Job

Stew

Thanks Stew!

I reckon, I've got the hang of them, now.....  :thumbup:
Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline millwright

  • Full Member
  • ***
  • Posts: 229
  • Country: gb
  • Leeds West Yorshire
Re: Bodging with Boris........
« Reply #37 on: November 07, 2016, 01:29:56 PM »
Another success story from the 'Waifs and Strays Orphanage' somewhere in deepest Derbyshire. well done David long may you keep churning them out.

John

Offline fcheslop

  • Jr. Member
  • **
  • Posts: 90
  • Country: gb
Re: Bodging with Boris........
« Reply #38 on: November 07, 2016, 01:40:35 PM »
Congratulations  :bow: :bow: :thumbup:
Whats next
 :beer:
History is scarcely capable of preserving the memory of anything except myths

Offline Stilldrillin

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4843
  • Country: gb
  • Staveley, Derbyshire. England.
Re: Bodging with Boris........
« Reply #39 on: November 07, 2016, 02:15:02 PM »
Another success story from the 'Waifs and Strays Orphanage' somewhere in deepest Derbyshire. well done David long may you keep churning them out.

John

Thanks John!  :thumbup:
Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline Stilldrillin

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4843
  • Country: gb
  • Staveley, Derbyshire. England.
Re: Bodging with Boris........
« Reply #40 on: November 07, 2016, 02:27:48 PM »
Congratulations  :bow: :bow: :thumbup:
Whats next
 :beer:

Thanks Frazer Lad!  :thumbup:

Next? Why? Is this one finished?  :scratch:    Not by a long way.......

Redesign scotch yoke. Add another crank disc, and bearing. Sort out water jacket.

Just started on new burner. Got a show, this Saturday.......

Sheesh!  :palm:
Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline fcheslop

  • Jr. Member
  • **
  • Posts: 90
  • Country: gb
Re: Bodging with Boris........
« Reply #41 on: November 07, 2016, 05:16:27 PM »
Ah well it will keep you from getting under youre lasses feet
Gave up for today just to cold for a wimp like me
cheers marra
History is scarcely capable of preserving the memory of anything except myths

Offline Stilldrillin

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4843
  • Country: gb
  • Staveley, Derbyshire. England.
Re: Bodging with Boris........
« Reply #42 on: November 07, 2016, 05:40:04 PM »
It was certainly cold, out there!

So, I did some silver soldering......  :thumbup:
Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline fcheslop

  • Jr. Member
  • **
  • Posts: 90
  • Country: gb
Re: Bodging with Boris........
« Reply #43 on: November 08, 2016, 02:08:50 PM »
So you found the brass monkey then
cheers
History is scarcely capable of preserving the memory of anything except myths

Offline Stilldrillin

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4843
  • Country: gb
  • Staveley, Derbyshire. England.
Re: Bodging with Boris........
« Reply #44 on: November 08, 2016, 03:16:39 PM »
So you found the brass monkey then
cheers

Yes! He's all attached again. For now........ 
Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline John Rudd

  • Hero Member
  • *****
  • Posts: 2150
  • Country: gb
Re: Bodging with Boris........
« Reply #45 on: November 08, 2016, 03:29:13 PM »
Nice job, good to see something come of all your hard work... :bow:
eccentric millionaire financed by 'er indoors
Location:  near Hull

Skype: chippiejnr

Offline Stilldrillin

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4843
  • Country: gb
  • Staveley, Derbyshire. England.
Re: Bodging with Boris........
« Reply #46 on: November 16, 2016, 05:22:23 PM »
Thanks John.
 Lots more work to do. Ran it at Saturday's show, and after 1/4hr the whole crank assembly was wagging about, loose!  :bang:

The bearing column, isn't fixed on to anything substantial.......

It's more of a "looking at", engine.......  :scratch:
Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline jcs0001

  • Sr. Member
  • ****
  • Posts: 288
  • Country: ca
Re: Bodging with Boris........
« Reply #47 on: November 16, 2016, 09:23:01 PM »
Nice little engine - I enjoyed the photos and video.  Thanks for taking the time and trouble to post them.

John.

Offline Stilldrillin

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4843
  • Country: gb
  • Staveley, Derbyshire. England.
Re: Bodging with Boris........
« Reply #48 on: January 04, 2017, 08:33:05 AM »
Thanks John!
 I'm afraid, I don't agree with the "little", comment. To me, it's just, big. Very poorly designed, and built......  :hammer:

(Just the sort of project I like).......  :thumbup:


After a few weeks silence. I can only report, more negative progress, on this frustrating project.......  :palm:

After some 10mins running, at Earl Shilton. The crank assembly began rocking from side to side, on it's single, 6mm wide upright!

Reminded me of stepping into a rowing boat/ dinghy........




Secured with M3 countersunk screws.......




Up close. "You could stick yer cap neb, under there!".......




It's almost stood on tiptoe! The column base isn't flat:bang: :bang:

You can see the rub mark, of the "keel". Inboard of the outer two screw holes.......




I'm now planning a new crankshaft assembly. With bearings at each end. As it should be.......  :wink:

Thanks for looking in!
David.
Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!