This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.
Messages - leadnavel
31
« on: October 13, 2020, 11:45:54 AM »
The OEM type being plastic, and presumably a tight fit in the swing arm, would they not have a much bigger outside diameter, and crush somewhat when fitted? this may bring the ID down in size when fitted. Julies bronze bushes will not do this much therefore need to be "size" before being fitted.
Just a thought.
The plastic material that the bushes are made from seems too stiff/brittle to be crushed down at all Tomb.
32
« on: October 13, 2020, 11:40:31 AM »
Are the ones you received from CMS the original plastic type or the bronze bush replacement type?
Thank you for your reply Nurse Julie, the parts that I got from CMS are of the plastic type. Can you shed any light as to why my bushes differ from the parts that CMS say are the correct replacements for my K7?
Absolutely no idea. What I do know is that the bronze bushes I sell fit the complete CB SOHC/4 range of bikes, including all the 750's K0-K8 and F1/ F2.
Looking at what I can see in your photo, is yours a standard swing arm?
As far as i'm aware my swinging arm is of the standard variety, what do think, is it? (image attached)
33
« on: October 12, 2020, 10:23:25 PM »
Are the ones you received from CMS the original plastic type or the bronze bush replacement type?
Thank you for your reply Nurse Julie, the parts that I got from CMS are of the plastic type. Can you shed any light as to why my bushes differ from the parts that CMS say are the correct replacements for my K7?
34
« on: October 12, 2020, 05:56:47 PM »
I’m a good way through my 750 K7 rebuild and thought that I would replace the bushes for the swinging arm as the end of one of the existing units are a bit knarled (image attached), here’s the problem, the replacement bushes from CMS (part number:52108-457-300) measure up different from my existing bushes! The inside diameter of the new bushes measure 21.80mm, the inside diameter of the old bushes measure between 21.39-21.40mm. In short the new bushes have a larger inside diameter than the old ones, so it’s defo not a ware issue!
I have questioned the part with CMS and they assure me that the correct part has been sent for the K7. I have also measured my existing Center Collar which measures between 21.34-21.38mm at the bush ends. I’ve had the bike since 1983 with very few modifications to it and she’s been off the road since 1986 (27’000 miles on the clock) so very few parts are worn. Does anyone know what’s going on here? Luckily I haven't taken out the old bushes as I would've been right up dump dyke!
35
« on: July 13, 2020, 04:27:51 PM »
Good luck with your project, do you have the spec for your engine stand? I could do with one of those for my K7 engine rebuild.
Sent from my iPhone using Tapatalk
36
« on: April 29, 2018, 10:36:19 PM »
What would the reason be for the longer F2 springs? thanks for the heads up on the alternative lifter plate sprinta it's nice to have that as a backup!
37
« on: April 28, 2018, 10:46:39 AM »
Yes K2-K6 the swirled plate is the last one to add to the top of the stack. I have the order right it's just the 'way up' im struggling with, was there a reason why were my plates flipped to sharp side up below the double plate? i'm thinking it was maybe an error by a previous installation! I also read somewhere that the double plate could be located as the top or second steel ring, closer to the swirl plate, for what reason i know not.
While the clutch is stripped down I measured the springs and they don't tally up with the spec for the length of a K7 Spring? The springs measure.
1. 40.02mm
2. 39.84mm
3. 40.20mm
4. 39.81mm
The manual states that K7 springs should be around about 32mm?! Two questions on that. Would this be the cause of my broken lifter plate? What would the reason be to use longer springs?
38
« on: April 27, 2018, 08:29:05 AM »
Any help you guys can give on this would be much appreciated.
I'm part way through a rebuild of my 78 K7 and am unsure if I should reassemble the clutch plates in the order/orientation that I found them? I've read quite a few posts on here and on the US site regarding the orientation of the plates but haven't found an answer. All the metal plates have a round edge and a flat edge and must all face the same direction but as you can all hopefully see from my image the two steel plates below the double-steel plate (the plates in question sit closest to the engine casing if that helps) are flipped to the opposite 'flat edge' direction! Should I flip them to the norm? I have also read on a post that the double-steel plate can be moved to the top of the stack but I can't find the post that mentions the reason for this.
The engine has been sitting idle for 30+ yrs and time has clouded my memory as to whether I was getting problems with the clutch when it was last on the road.
39
« on: February 24, 2018, 01:32:08 PM »
Thanks for the information chaps, sounds like it would be a wise move to get myself a full set of rings to be on the safe side. I’ve miked and measured most of the other gubbins in the top end and all appears (surprisingly after all this time) to be within spec and in good nick, after a good clean. I haven’t got a bore gauge so next stop local mech to have the bores measured and cross hatched if needed. Much appreciated your wisdom is!
Sent from my iPhone using Tapatalk
40
« on: February 23, 2018, 11:22:32 AM »
Hi guys your help would be appreciated with this dilemma. I'm continuing with my first 750 K7 engine rebuild, 32 yrs after removing the engine from the frame. The engine has been sitting without oil in it for all this time but I have been sticking some oil into any open engine holes over this period and hand cranking it to keep things moving. I'm in the process of stripping and cleaning the oily rust from the exposed surfaces and am unsure if would be OK to use the old piston rings as they have various markings on them, are these markings/stains normal. Although they look iffy all the rings feel smooth to the touch! What do you guys think?
|
Show Posts