Author Topic: Obvious sillyness (Oldest tires & sprockets contest)  (Read 3249 times)

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Offline grcamna2

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #25 on: January 13, 2024, 02:35:31 PM »
I hope you have some strong degreaser Don.  :o
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Offline ekpent

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #26 on: January 13, 2024, 02:52:05 PM »
I think I see a winged insect in there ! How could that happen ?

Offline Don R

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #27 on: January 13, 2024, 05:34:22 PM »
  It must have had an opening in the case at some point. I got this K0 20 or so years ago and never built the bike until now. I'm shocked at the awful condition of the insides.
  I have the interior of a 10,000 mile motor from a wreck that can provide a newer rotating assembly. and accessories. I robbed the crankcase for a high-performance build. I didn't get the cases washed before the blizzard so I'm going to prep it for cleaning and stage up all of the parts.
No matter how many times you paint over a shadow, it's still there.
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 You don't need a weatherman to know which way the wind blows.

Offline Tracksnblades1

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Re: Obvious sillyness
« Reply #28 on: January 13, 2024, 05:50:36 PM »
These tires have white letter sidewalls, they are pretty fancy to be honest. The seller thought they might be original but I'm pretty sure they have been changed once. They did make it a few miles on my test ride.
 I did keep the original front tire off of my sandcast. it looks OK but has a flat spot from sitting a decade or two.
 Thanks Wilbur, I guess the sillyness wasn't as obvious as I thought. lol.

Honda Magnas and Kawasaki LTDs had white lettering, if I remember correctly….
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Offline 70CB750

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Offline BenelliSEI

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #30 on: January 14, 2024, 05:09:57 AM »
The screen.

That is by far the worst I’ve ever seen……

Offline Don R

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #31 on: January 24, 2024, 09:36:35 AM »
 There was a chip broken off of a piston skirt. No worries though, I found it in the oil pump.

 Whatever came out of the oil and stuck to the bearings resembles aviation form a gasket, detergent, parts solvent, lacquer thinner, vinegar, evaporust, brake clean and gasoline don't touch it. I'm going to scrap the crank and bearings and most of the interior of this engine.
   I'm pretty sure this chunk lived outdoors under a tarp for a spell. That does not explain the other mayhem that took place inside of it. The head was ported but has a chunk broken out of an intake nipple.
« Last Edit: January 24, 2024, 11:06:13 AM by Don R »
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Don R

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #32 on: February 04, 2024, 09:12:43 AM »
 I found this on the GS1100 I just bought.  Masterbackwards link.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline madmtnmotors

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #33 on: February 04, 2024, 10:27:04 AM »
The screen.

I had one similar to that:





I now drop the oil pan of every new acquisition.  :o
« Last Edit: February 10, 2024, 06:34:37 PM by madmtnmotors »
TAMTF...


Wilbur



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Offline Kelly E

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #34 on: February 04, 2024, 01:21:41 PM »
I found this on the GS1100 I just bought.  Masterbackwards link.

We've had a couple of bikes we bought that way. You have to wonder how far someone rode it that way?
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1975 Honda CB 400F Super Sport                          1972 MGB/GT
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1978 Kawasaki KL 250
1980 Suzuki GS 1100E
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Offline dusterdude

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #35 on: February 04, 2024, 02:03:05 PM »
When i bought my 750,i bought a used 16 inch rear wheel from carpy.i have no idea how old the tire is,but its still on the wheel.the combo hasnt been on the bike in a number of years and btw,i bought the combo in 2005.

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Offline Don R

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #36 on: February 10, 2024, 01:25:48 PM »
I found this on the GS1100 I just bought.  Masterbackwards link.

We've had a couple of bikes we bought that way. You have to wonder how far someone rode it that way?

 I'm betting on a long time. The PO had it 12 years or so and he didn't mention changing anything.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Don R

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #37 on: February 24, 2024, 11:19:44 AM »
 Has anyone done a study on why drive chains get a tight spot? Is it the one spot that got enough lube and didn't become the loose section? Factory original good spot? The spot that was inside the engine cover and didn't get washed at the car wash or exposed to the chemicals at the beauty shop entrance where it was stored for a decade? The part of the chain that was on the slack side and didn't get stretched when the PO did a hole shot?
 Great minds need to know these things, or people like me. 
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline grcamna2

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #38 on: February 24, 2024, 01:14:25 PM »
Has anyone done a study on why drive chains get a tight spot? Is it the one spot that got enough lube and didn't become the loose section? Factory original good spot? The spot that was inside the engine cover and didn't get washed at the car wash or exposed to the chemicals at the beauty shop entrance where it was stored for a decade? The part of the chain that was on the slack side and didn't get stretched when the PO did a hole shot?
 Great minds need to know these things, or people like me.

I bet the lube gets washed/flung-out of certain links,more than others.
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline PeWe

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #39 on: February 25, 2024, 01:59:00 AM »
Master link if riveted too hard?
Long parked bike chain not lubed or just dried. Flush some naphta/ chain cleaner + new lube.

Check if chain + sprockets are shot. Slack should be equal when rotating rear wheel.
Saving money using bad sprockets and chain can be expensive...
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline grcamna2

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #40 on: February 25, 2024, 08:52:36 AM »
Master link if riveted too hard?
Long parked bike chain not lubed or just dried. Flush some naphta/ chain cleaner + new lube.

Check if chain + sprockets are shot. Slack should be equal when rotating rear wheel.
Saving money using bad sprockets and chain can be expensive...

The slack should be equal when rotating the rear wheel: YES ! !  ;)
The chain doesn't wear evenly,which robs power from the bike.

I admit,sometimes I install a new chain on used sprockets which I've 'flipped over',while hoping for the same chain life as 'all new parts'..  ::)  :D  The chain wears faster.
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline PeWe

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #41 on: February 26, 2024, 01:06:11 AM »
The modern chains lives much longer with less tension.
I used D.I.D 50 HDS o-ring chain in the 80's.
I had to adjust rear wheel rather often.

I missed to adjust the slack in time during a vacation ride on Autobahn, Germany where speeds were mostly 140-180kmh.

I came into a slow going uphill  lane and had to accelerate passing big trucks. Stepped down to 3rd and WOT, chain snapped off.
It broke the chain guard brackets on swingarm, sliced a piece off the registration plate plus marks on wheel hub.
I could roll to a parking place beside the road.
I was waiting for oil to drip. No problems, cases did not crack.

I guess the 17t sprocket left more space for the whipping chain that was left on the road like a dead snake.

I had to go back and pick it up when fast going cars tires could go bad.

2 guys on a scooter arrived. I got a lift to a nearby city and bike shop where they sold a new chain just before closing time.

Back then 836 and more. Maybe closer to 80 whp.

So I prefer to use stronger chain than needed when bike came back on the streets 2014.

Chain can be good and relatively strong. Too much slack can rip it off.
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Don R

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #42 on: February 26, 2024, 11:04:05 PM »
 I bought a 630 DID professional O ring chain with 150 links from Summit Racing for about $50 shipped. Other lengths of the same chain are $100 higher. I have no idea why unless they are old stock that doesn't sell due to the length.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Mr. Mike

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Re: Obvious sillyness (Oldest tires contest)
« Reply #43 on: March 04, 2024, 05:09:46 PM »
When figuring the sprocket ratio do you count where the teeth were, or only where they are?


Hmmm. Good question Don.  I’ll ask my dentist tomorrow…he’s a smart guy.
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Offline Stev-o

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #44 on: March 05, 2024, 07:07:31 AM »
I changed this sprocket last year and wont win the contest but seems I got my money's worth out of it!


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Offline PeWe

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #45 on: March 05, 2024, 09:45:41 AM »
That sprocket can be used as a saw blade? ;)
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Don R

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #46 on: March 06, 2024, 04:50:11 PM »
 I took the sprocket cover off of the Louisville bike today, it had a curious chain lube buildup. I can only assume that I never looked in there before.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline BenelliSEI

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #47 on: March 06, 2024, 06:02:39 PM »
I took the sprocket cover off of the Louisville bike today, it had a curious chain lube buildup. I can only assume that I never looked in there before.

Don….. Have you looked under there? Strange indeed…. Nothing oozing up?

Offline BenelliSEI

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #48 on: March 06, 2024, 06:04:56 PM »
I changed this sprocket last year and wont win the contest but seems I got my money's worth out of it!




Steve….. I think that might be a winner. Phew!

Offline Mark1976

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Re: Obvious sillyness (Oldest tires & sprockets contest)
« Reply #49 on: March 06, 2024, 06:42:49 PM »
I changed this sprocket last year and wont win the contest but seems I got my money's worth out of it!



Steve….. I think that might be a winner. Phew!

Maybe give it to Kelly E, make a clock out of it. Its got that cringe factor thing going for it.
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