Technical Tyre wear question

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Technical Tyre wear question

You can press bushes in at home on many suspension parts , but it is a job again easier with special tools or an Hydraulic Garage Press.
(Fortunately for me I still have mine;) )
This is a double post, not sure how that happened. The ghost of the internet did it, or maybe the ghost mechanic :)
 
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I saw someone on YouTube using a g clamp to put bushes in, but I reckon the saving in money will be outweighed by the extra difficulty. So I'm saving that for another time. I'd consider changing rear axle bushes as the axle isn't so easily replaced.
I have used a strong vice and large sockets in the past with success, but some are easier than others.
Often getting the old metalastic bush out is the hardest job, so a complete arm at a fair price makes good sense.:)
 
I used to think that too , though not sure if true on the two stroke Francis Barnetts though, but my mates 350 Ariel Red Hunter sounded good on a straight pipe.:)
I was just an ignorant young idiot who liked the noise
I used to think that too , though not sure if true on the two stroke Francis Barnetts though, but my mates 350 Ariel Red Hunter sounded good on a straight pipe.:)
Aye, two strokes are well known for being "fussy" about their exhausts - as I'm sure you know Mike with your go carting exploits - I experimented with expansion chambers and pipe lengths/diameters on the Mopeds I rode around on at college and a fascinating subject it is too. Nearest thing on a four stroke is modifying camshaft lift/duration but probably more "tweeky"?
 
I was just an ignorant young idiot who liked the noise

Aye, two strokes are well known for being "fussy" about their exhausts - as I'm sure you know Mike with your go carting exploits - I experimented with expansion chambers and pipe lengths/diameters on the Mopeds I rode around on at college and a fascinating subject it is too. Nearest thing on a four stroke is modifying camshaft lift/duration but probably more "tweeky"?
Weren't we all, even on cars I would make up short exhausts with a straight through box exiting before the rear wheels, some sounded really good, but any performance increase was probably in the mind. A bit like the mopeds we hear screaming as we slowly cruise past them, but the riders are happy;)
On the four stroke motorbikes and cars the length of front pipe to first box is critical in effecting characteristics, plus the "reverse cone" effect on scavenging. Even on the two stroke Karts we found for different circuits we altered the length of the inlet tract could give benefit.:)
 
I've ordered new control arms and rod ends from GSF. The price is actually better for all those parts than I could get on ebay. It qualifies for free delivery too, but i'll be going past there tomorrow anyway, so i'll pick them up. Sadly next Wednesday is the earliest I could start this job.

I suppose I could have had a go at putting new bushes in there, but these are 16 years old and probably not worth trying to repair.
I'd say a good choice of supplier. Much more likely to get a quality product than from an ebay unknown.
 
Weren't we all, even on cars I would make up short exhausts with a straight through box exiting before the rear wheels, some sounded really good, but any performance increase was probably in the mind. A bit like the mopeds we hear screaming as we slowly cruise past them, but the riders are happy;)
On the four stroke motorbikes and cars the length of front pipe to first box is critical in effecting characteristics, plus the "reverse cone" effect on scavenging. Even on the two stroke Karts we found for different circuits we altered the length of the inlet tract could give benefit.:)
Yup, I modified my '66 Cortina 1500 GT by cutting the exhaust off right at the bottom of the downpipe and making up a length of straight pipe with a "cherry bomb" excuse for a silencer with a large diameter pipe then exiting in front of the rear wheel on the nearside. It sounded "lovely", to me anyway. Now a days I'd be mortally embarrassed to drive around in something making so much noise!
 
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I collected the new shinys. These bushes actually feel rubbery, nothing like the old ones.

I was driving the car today and as I went around a corner I managed a wheel screech. I'm going to need at least one new front tyre.


ddd.jpg
 
Aye, two strokes are well known for being "fussy" about their exhausts
I had a Yamaha RD125 with a few different exhausts. The stock pipe and one of the more extreme race pipes was like night and day. The race pipe couldn't even hold the revs from 3rd gear up and under 7,000 revs. However 8,000 to 11,500 and it was like a rocket.

I collected the new shinys. These bushes actually feel rubbery, nothing like the old ones.
Yeah...

I was driving the car today and as I went around a corner I managed a wheel screech. I'm going to need at least one new front tyre.
Ok.... Is there some known connection between the screeching and tyre condition then means they need replaced?
You can make new tyres screech too. Usually means your going beyond the limits of the grip.
 
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They do look nice.

I didn't realise just how much the bushes could dry up and lose their movement until i tried these new control arms. I've tried spraying old bushes with grease/WD40 but it didn't make much difference.
Stuff like that is petroleum based so likely to destroy rubber components. f you need to spray something like this then use either a rubber grease - typically "red" rubber grease - or a silicon based spray which won't affect the rubber.

When you get the old ones off try sticking a screwdriver through the middle of the rear, void, bushes and manupulating them to see if they are breaking up or loosing adhesion to the metal outer ring. A picture would be nice too.
 
Stuff like that is petroleum based so likely to destroy rubber components. f you need to spray something like this then use either a rubber grease - typically "red" rubber grease - or a silicon based spray which won't affect the rubber.

When you get the old ones off try sticking a screwdriver through the middle of the rear, void, bushes and manupulating them to see if they are breaking up or loosing adhesion to the metal outer ring. A picture would be nice too.
With the load off the old wishbone see how much movement in bottom ball on old wishbone.
 
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I'll wrestle the old bushes when they're off and take some pictures, that's a good idea.

I can't gurantee they're the problem, hence why I bought new rod ends. But those rod ends haven't moved for years if ever, surely the previous owners didn't leave the car toe-out for years burning up tyres after every 8-10,000 miles?

I saw some red grease on a youtube video for the first time a day or two ago. I was looking at how to replace clutch/gearbox and the mechanic used a lot of it. I've been meaning to get some to try out, i'll look it up.
 
I'll wrestle the old bushes when they're off and take some pictures, that's a good idea.

I can't gurantee they're the problem, hence why I bought new rod ends. But those rod ends haven't moved for years if ever, surely the previous owners didn't leave the car toe-out for years burning up tyres after every 8-10,000 miles?

I saw some red grease on a youtube video for the first time a day or two ago. I was looking at how to replace clutch/gearbox and the mechanic used a lot of it. I've been meaning to get some to try out, i'll look it up.
Where was he putting it? A small amount of specialist grease - not red rubber grease - on the first motion shaft splines is a good idea but use sparingly as you don't want it throwing off onto the friction lining. If you're doing a clutch you can quite cheaply buy a grease which is optimized for this use. My factor carries the Sachs product: https://www.sachsperformance.com/en/sachs-service-greasing-clutch-disc-hub-spline.
 
Where was he putting it? A small amount of specialist grease - not red rubber grease - on the first motion shaft splines is a good idea but use sparingly as you don't want it throwing off onto the friction lining. If you're doing a clutch you can quite cheaply buy a grease which is optimized for this use. My factor carries the Sachs product: https://www.sachsperformance.com/en/sachs-service-greasing-clutch-disc-hub-spline.
Just googled it and this product seems easily available from a multitude of sources
 
Where was he putting it? A small amount of specialist grease - not red rubber grease - on the first motion shaft splines is a good idea but use sparingly as you don't want it throwing off onto the friction lining. If you're doing a clutch you can quite cheaply buy a grease which is optimized for this use. My factor carries the Sachs product: https://www.sachsperformance.com/en/sachs-service-greasing-clutch-disc-hub-spline.
He was putting it onto the bushes/rubber seals in a gearbox after replacing them and also on the bolt holes. In hindsight he was probably being lazy by putting it on the bolt holes because another grease would have been better?
 
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