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Loop vibes

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Amboman View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Amboman Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2018 at 14:31
For US models, the timing chain started with engine number 58532. The timing cover is slightly different on timing chain engines: once you remove the belt cover, you can see whether the "bump" to clear the oil pump nut is small (gears) or larger (chain).
Charlie
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Simmoto View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Simmoto Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2018 at 14:47
how do you do your dynamic timing Ian? As per shade tree mechanic? If so how do you judge RPM.?
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Dave P. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dave P. Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2018 at 15:22
Originally posted by Amboman Amboman wrote:

For US models, the timing chain started with engine number 58532. The timing cover is slightly different on timing chain engines: once you remove the belt cover, you can see whether the "bump" to clear the oil pump nut is small (gears) or larger (chain).


You learn something new every day!
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1971 V7 Special. 1972 850GT.
1970 T120 Bonnie. 2009 500 Bullet.
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2018 at 16:43
Originally posted by Simmoto Simmoto wrote:

don't know if it's always like it, PO says not and I am a picky sod...


LOL I should have phrased the question differently LOL

So it has been like that all the time you've had it?

So not, you changed something, then got vibration...

"Chicken nuggets don't dance on a Tuesday."
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Simmoto View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Simmoto Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2018 at 17:36
Originally posted by Amboman Amboman wrote:

For US models, the timing chain started with engine number 58532. The timing cover is slightly different on timing chain engines: once you remove the belt cover, you can see whether the "bump" to clear the oil pump nut is small (gears) or larger (chain).

Excellent, thanks Charlie so mine has a chain as it starts with a '6'. Could explain vibes I guess and some unusual noises from the front
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Simmoto View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Simmoto Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2018 at 17:38
Originally posted by Mike H Mike H wrote:

Originally posted by Simmoto Simmoto wrote:

don't know if it's always like it, PO says not and I am a picky sod...


LOL I should have phrased the question differently LOL

So it has been like that all the time you've had it?

So not, you changed something, then got vibration...


The truth is I don't know - i don't remember it being vibey but as I've got more used to the bike, worked on it and have a bit of faith in its abilities so I've pushed it a bit faster....I've done a lot of things to it over the winter so it's a complex algorithm :-)
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Simmoto View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Simmoto Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2018 at 18:09
So I guess the question is whether an Eldo with a chain/tensioner/cogs in good condition would cause some vibes or do vibes indicate wear? There's no rattle as such but the vibes are worst at the front of the floorboards suggesting maybe come from front of the engine...

Either way I wont do the work as it's exactly the sort of job I'd make a pigs ear of, probably wait until winter...
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Amboman View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Amboman Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2018 at 18:33
"Unusual noises" could be the slack timing chain grinding away at the engine case and timing cover. The plastic?/rubber? block on earlier tensioners has a bad habit of disintegrating and then the bits flow throughout the engine - I've found them in the rocker pins.

The slack chain plays havoc with both the valve and ignition timing, this could make a significant difference in how well the engine runs.


Charlie
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http://www.AntietamClassicCycle.com
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Dave P. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dave P. Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2018 at 18:52
Would it be impertinent to suggest that the time is now!!
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Loopian View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Loopian Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2018 at 18:53
Originally posted by Simmoto Simmoto wrote:

how do you do your dynamic timing Ian? As per shade tree mechanic? If so how do you judge RPM.?
Well yes I do it as per shade tree mechanic however I’ve got a rev counter which makes it easy for me. I wonder if you could you use some sort of multimeter to check the revs. I do know that I first set up the timing using the static method I then got hold of a strobe and used the dynamic method there was quite a difference in the distributor position. Unfortunately I did not run the bike inbetween so I can’t tell what difference it made. However the full tune up definitely made the bike run very well.
Cheers Ian
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Simmoto View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Simmoto Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2018 at 19:11
Originally posted by Dave P. Dave P. wrote:

Would it be impertinent to suggest that the time is now!!

Could be or could be a red herring.... I need to listen more carefully...if there was a decent place in Scotland that could do the work I'd have it done today...
 


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Simmoto Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2018 at 19:13
Originally posted by Amboman Amboman wrote:

"Unusual noises" could be the slack timing chain grinding away at the engine case and timing cover. The plastic?/rubber? block on earlier tensioners has a bad habit of disintegrating and then the bits flow throughout the engine - I've found them in the rocker pins.

The slack chain plays havoc with both the valve and ignition timing, this could make a significant difference in how well the engine runs.



Yeah for sure, I'll get a screwdriver and have a good listen
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Simmoto View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Simmoto Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2018 at 19:53
Can I change an Eldorado from timing chain to gears? I see Harper Moto do kits for other models but exclude the Eldo...?
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Dave P. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dave P. Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2018 at 20:18
https://www.harpermoto.com/gear-set-13071700.html
This set from Harpers is for an Eldorado.It is listed in their general listing of Eldorado spares.I have no idea if you can just do a straight swop with the sprockets.Perhaps Charlie (Ambo Man) can advise.
TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.

1971 V7 Special. 1972 850GT.
1970 T120 Bonnie. 2009 500 Bullet.
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Simmoto View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Simmoto Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2018 at 20:25
Thanks for that Dave, I'm sure I've read about this somewhere but can't for the life of me find in the usual places...
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