Notices
Everything Diesel Discuss R/C Diesel engines here.

mk17 starting problems

Old 07-16-2013, 07:44 PM
  #26  
My Feedback: (2)
 
Join Date: Feb 2002
Location: Hervey Bay Queensland, AUSTRALIA
Posts: 2,995
Likes: 0
Received 0 Likes on 0 Posts
Default RE: mk17 starting problems

Thanks Chris.

I am not a machinist or engineeer so these suggestions are most useful.

I have a mini butane torch for point-heat application. On further consideration I will make up a circumferential grip along the lines suggested in the MEW article you have kindly provided, before resorting to drifting the insert out.
Old 07-16-2013, 07:55 PM
  #27  
 
Join Date: Jul 2005
Location: Upper HuttWellington, NEW ZEALAND
Posts: 1,601
Likes: 0
Received 1 Like on 1 Post
Default RE: mk17 starting problems

You should be able to make up a tool like that from some K&S 1/16 (or slightly thicker) brass strip, a drill press, hacksaw and a bit of filing...........on reflection some 1/8 alloy strip might be even better-to give you the maximum gripping area........

ChrisM
'ffkiwi'
Old 07-21-2013, 06:11 PM
  #28  
My Feedback: (1)
 
Bill Adair's Avatar
 
Join Date: Feb 2005
Location: Beaverton, OR
Posts: 220
Likes: 0
Received 0 Likes on 0 Posts
Default RE: mk17 starting problems

Martin,

Good idea to avoid peening the head, so I will give your advice a try. I've used J-B Weld before, with good reselts.

Bill
Old 08-06-2013, 06:35 PM
  #29  
My Feedback: (2)
 
Join Date: Feb 2002
Location: Hervey Bay Queensland, AUSTRALIA
Posts: 2,995
Likes: 0
Received 0 Likes on 0 Posts
Default

Got the MK-17 sorted. It starts easily and runs well with the home made venturi insert.

Thanks to Chris for the link to the venturi insert puller.
Attached Thumbnails Click image for larger version

Name:	IMG_2376[1].jpg
Views:	96
Size:	91.8 KB
ID:	1905664   Click image for larger version

Name:	IMG_2379[1].jpg
Views:	82
Size:	92.4 KB
ID:	1905665  

Last edited by fiery; 08-07-2013 at 06:04 PM.
Old 08-07-2013, 11:05 AM
  #30  
 
Join Date: Oct 2002
Location: Towson, MD
Posts: 933
Likes: 0
Received 0 Likes on 0 Posts
Default

I don't know about yours but all three of mine have the venturi held in by the needle valve assembly and this need to be removed for it to slip out. Mine interchange very easily.
Max
Old 08-07-2013, 03:42 PM
  #31  
AMB
 
Join Date: Jun 2003
Location: winter park, FL
Posts: 6,748
Likes: 0
Received 2 Likes on 2 Posts
Default

Test
Old 08-10-2013, 06:13 AM
  #32  
gcb
 
Join Date: Oct 2002
Location: Port Ewen, NY
Posts: 3,440
Likes: 0
Received 4 Likes on 4 Posts
Default

Originally Posted by maxtenet
I don't know about yours but all three of mine have the venturi held in by the needle valve assembly and this need to be removed for it to slip out. Mine interchange very easily.
Max
Mine too. Fiery posted that he had removed the NVA (needle valve assembly) back in post #16. That in mind, the rest of the posts make more sense.

My guess is that a metal burr or a faulty machining had caused the venture to be stuck. They are still great little engines.

George
Old 08-11-2013, 03:57 PM
  #33  
My Feedback: (2)
 
Join Date: Feb 2002
Location: Hervey Bay Queensland, AUSTRALIA
Posts: 2,995
Likes: 0
Received 0 Likes on 0 Posts
Default

George is correct. The 'red' insert was held fast by ancient congealed castor oil which had turned to the consistency of badly set toffee. A little heat from a pin-point propane flame spread evenly over the intake tube, a deft twist with a soft jawed 'nutcracker' shaped tool, and out it came.

Engine shown is a super little runner, though the contra is a little 'sticky' when hot. No biggie. No leakage at all, and far better than being too loose. The home made intake at 4 mm diameter worked very well.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On


Thread Tools
Search this Thread

Contact Us - Manage Preferences Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.