69 jupiter making strange noise
Moderator: ajleone
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- Posts: 21
- Joined: Mon Sep 04, 2023 7:40 pm
- Location: Kingman Arizona USA
69 jupiter making strange noise
while riding my new to me jupiter I noticed a strange noise. hard to explain it but sounded like if someone put playing cards on a bicycle wheel but it was more metallaic and changed with speed of the engine, It would come and go when i stopped it went away. I quit riding soon after and haven't had time to inspect yet. this ones got me, I hope there isn't damage to the engine.
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Re: 69 jupiter making strange noise
Rear chain? Too tight ,too loose?.
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- Posts: 1294
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- Location: Essex UK
Re: 69 jupiter making strange noise
Engine noises are the hardest thing to pin down. Is it really as slow as playing cards on a bicycle wheel? If so it sounds like (as Bob suggests) something to do with the chain.
Cheers,
Colin
Cheers,
Colin
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- Posts: 21
- Joined: Mon Sep 04, 2023 7:40 pm
- Location: Kingman Arizona USA
Re: 69 jupiter making strange noise
Yeah might be the rear chain, checked the oil and rode it around again today ... no noise but gonna adjust the chain as it is a little loose.
just had me a little concerned bought the bike last year and only rode it a few times.
off the topic, was wondering how to tell the age of my tires... I looked but can't find any type of date... the bike is
a 69 with 5k miles could be original tires? I don't think these are made anymore,
they are both Pirelli MT 53's front 3.50-19 rear 4.00-18 both say made in Italy only other numbers are
front: 353 (20039.84) 90 , Rear: 369 (20108.30) 13
just had me a little concerned bought the bike last year and only rode it a few times.
off the topic, was wondering how to tell the age of my tires... I looked but can't find any type of date... the bike is
a 69 with 5k miles could be original tires? I don't think these are made anymore,
they are both Pirelli MT 53's front 3.50-19 rear 4.00-18 both say made in Italy only other numbers are
front: 353 (20039.84) 90 , Rear: 369 (20108.30) 13
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- Posts: 21
- Joined: Mon Sep 04, 2023 7:40 pm
- Location: Kingman Arizona USA
Re: 69 jupiter making strange noise
Wow I feel so stupid, the noise I was hearing was from the kickstarter. My big size 13 boots were pushing it back, it also had a hard starting problem.
I bought a new spark plug not knowing the gap set it at 35 thousnads, after reading thru some posts found out should be between .5-.6 mm so set
the gap at 22 thousands thats .55 mm. bike starts when hot! now gonna just enjoy the ride.
I bought a new spark plug not knowing the gap set it at 35 thousnads, after reading thru some posts found out should be between .5-.6 mm so set
the gap at 22 thousands thats .55 mm. bike starts when hot! now gonna just enjoy the ride.
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- Posts: 1294
- Joined: Wed Feb 05, 2020 1:20 pm
- Location: Essex UK
Re: 69 jupiter making strange noise
Don't worry, we have all made mistakes! What would life be without a few ups and downs?
Cheers,
Colin
Cheers,
Colin
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