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ken
Agony Aunt - You have a car problem? Speak to Ken
Joined: March 6th, 2009, 1:40 am
Posts: 3675
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 Re: Help? New tyres now I have a knocking noise? Related? Sam, 115 mph does seem rather speedy, even for a Mehari.  ken samfieldhouse wrote: I really want those 4 bits of rubber to be attached to the most solid thing possible when they're spinning at 1,700 rpm-ish. And probably some maths tuition too  
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| January 12th, 2010, 1:21 pm |
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samfieldhouse
Firing on two.
Joined: February 11th, 2009, 12:32 am
Posts: 3324
Location: Chichester, West Sussex
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Re: Help? New tyres now I have a knocking noise? Related? ken wrote: Sam, 115 mph does seem rather speedy, even for a Mehari. ken samfieldhouse wrote: I really want those 4 bits of rubber to be attached to the most solid thing possible when they're spinning at 1,700 rpm-ish. And probably some maths tuition too I was trying to be clever and do something along the lines of 15" wheels having a rough tyre diameter of 1.25meters (15 x pi = 47' or around 1.25m) So at 130kph (yeah that was optamistic) you're doing 2166 meters a minute, divided by 1.25 = 1732 :s
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| January 12th, 2010, 4:17 pm |
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ken
Agony Aunt - You have a car problem? Speak to Ken
Joined: March 6th, 2009, 1:40 am
Posts: 3675
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Re: Help? New tyres now I have a knocking noise? Related? Sam, I guess you're not bothering to fit any tyres? At least that'll dispense with all this contact patch nonsense...  Typical overall diameter of a 2CV sized tyre is more like 560mm to 580mm, with an effective circumference under load of around 1.840m. ken. samfieldhouse wrote: I was trying to be clever and do something along the lines of 15" wheels having a rough tyre diameter of 1.25meters (15 x pi = 47' or around 1.25m) So at 130kph (yeah that was optamistic) you're doing 2166 meters a minute, divided by 1.25 = 1732 :s
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| January 12th, 2010, 4:38 pm |
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Smiffy
Firing on two.
Joined: October 23rd, 2009, 10:41 pm
Posts: 2356
Location: Worcestershire
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Re: Help? New tyres now I have a knocking noise? Related? Quick question:
I've de-rusted my wheels. There's no rust or anything, and the smooth inner rims have no bumps or bashes. However, when I go round a left-hand corner fairly hard there's a knocking sound. What do you reckon this is?
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| January 19th, 2010, 8:46 am |
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Sean
Firing on two.
Joined: April 22nd, 2009, 11:06 pm
Posts: 3684
Location: Ecosse
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Re: Help? New tyres now I have a knocking noise? Related? Driveshaft needing grease, 2cv joint on its wat out, worn wheel bearing, contact with the inner wing, worn kp etc
sean
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Kissing the Lash
"Any advice of a technical nature is given on the understanding that I've actually done this shit, not just read about it in D*lly club mag some time ago.
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| January 19th, 2010, 11:10 am |
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Smiffy
Firing on two.
Joined: October 23rd, 2009, 10:41 pm
Posts: 2356
Location: Worcestershire
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Re: Help? New tyres now I have a knocking noise? Related? Well... noticed quite a lot of grease splurging out around the n-s DS gater... (Snowy the Snail sat in a barn for 7 years right after I bought him, and didn't get any attention whatsoever until his triumphant, nay miraculous, resurrection 3 months ago. I noticed the grease when I got the engine out for a new clutch last month.)
Would all that grease have been packed in by the previous owner to mask a worn DS when he was trying to sell?
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| January 19th, 2010, 12:11 pm |
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Sean
Firing on two.
Joined: April 22nd, 2009, 11:06 pm
Posts: 3684
Location: Ecosse
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Re: Help? New tyres now I have a knocking noise? Related? possibly
Sean
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Kissing the Lash
"Any advice of a technical nature is given on the understanding that I've actually done this shit, not just read about it in D*lly club mag some time ago.
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| January 19th, 2010, 12:21 pm |
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