vibration at speed

[babel 101]

[QUOTE = "davy83, post: 652973, miembro: 495"] Intentaré hacer la prueba de las ruedas, no es una mala idea. Creo que la idea de que podría haber puntos planos en las llantas puede valer la pena verlas, ya que las ruedas tienen 17 años, así que han pasado por un poco y he tenido que reemplazar uno de los frentes debido al daño en la llanta, así que tal vez el el otro tampoco tiene razón. [/ QUOTE]
+1

 

[Ebenezer]

Obvious, but have you checked the tyre pressures? These cars seem to be quite sensitive to correct tyre pressure. I was getting vibration through the steering wheel recently with some spirited driving. I checked the tyre pressures and they were all 3 psi down. Pumping to the correct pressure seemed to reduce the problem.

Eb

 

[babel 101]

[QUOTE = "Ebenezer, post: 653398, miembro: 4480"] Obvio, pero ¿has revisado las presiones de los neumáticos? Estos autos parecen ser bastante sensibles a la correcta presión de los neumáticos. Recibí vibraciones a través del volante recientemente con un manejo enérgico. Revisé las presiones de los neumáticos y todos bajaron 3 psi. Bombear a la presión correcta pareció reducir el problema.

Eb [/ CITA]
yo Will manera this

 

[MRichards]

FWIW my experience with so-called fast road tyres is that they don't like sitting around unused. I presume the tyre compounds allow the carcass to flatten out a bit where its contacting the ground. Depending on the tyre pressure,but more importantly the ambient temperature, it takes quite a bit of driving to get rid of that flat spot which causes a vibration through the steering wheel at around 60 mph.
This flat spot effect is very pronounced with Formula Ford racing tyres which get very hot during a race. Unless you jack up all wheels off the ground while waiting for the next race they will get flat spots. These flat spots will shake out your tooth fillings at the start of a race but disappear as the tyres get up to temperature. If you don't like vibrating tyres use the car more often,jack up the car when not in use,move to southern Spain or fit ordinary tyres.

 

[babel 101]

FWIW my experience with so-called fast road tyres is that they don't like sitting around unused. I presume the tyre compounds allow the carcass to flatten out a bit where its contacting the ground. Depending on the tyre pressure,but more importantly the ambient temperature, it takes quite a bit of driving to get rid of that flat spot which causes a vibration through the steering wheel at around 60 mph.
This flat spot effect is very pronounced with Formula Ford racing tyres which get very hot during a race. Unless you jack up all wheels off the ground while waiting for the next race they will get flat spots. These flat spots will shake out your tooth fillings at the start of a race but disappear as the tyres get up to temperature. If you don't like vibrating tyres use the car more often,jack up the car when not in use,move to southern Spain or fit ordinary tyres.

live in South of Spain. And I think it's a great idea to raise the car or drive it more often

 

[TimR]

Quite possibly a potential cause that gets overlooked...

 

[davy83]

I have the same, all suspension components are in good condition... the wheels balanced but on more of an expert inspection it turns out I have buckles on the inner edge of the rim. Looking at your avatar we have the same rims so it's entirely plausible.

On very smooth roads I can feel a slight almost unnoticeable vibration at 70mph but over 100mph (on the German Autobahns a few weeks ago) I could feel it vibrating at different speeds up to 150mph when I lost my bottle

Going to send them off to Lepsons in the new year who can hopefully repair the buckles and re-finish to be like new again

did you ever get these wheels fixed? I have established that two of my wheels are slighlty not round and I have not tried the wheel specialists and also a local wheel specialist company with whaty looked like quite an advanced straightening machine and none of them can do anything with my not round wheels.

 

[FIFTY]

@davy83 Honestly no. I had a big invoice to pay with the clutch, rear end refresh and exhaust rebuild at the start of the year as a result restoring the wheels have been put on the back burner.

After trying a couple of places with no success back in September I do feel as though the real solution may be a new set of wheels :/

 

[babel 101]

[QUOTE = "FIFTY, post: 652743, member: 5736"]
Tengo lo mismo, todos los componentes de la suspensión están en buenas condiciones ... las ruedas están equilibradas pero en una inspección más experta resulta que tengo hebillas en el borde interior de la llanta. Mirando a tu avatar tenemos las mismas llantas, por lo que es completamente plausible.

En caminos muy suaves puedo sentir una ligera vibración casi imperceptible a 70 mph pero a más de 100 mph (en las autopistas alemanas hace unas semanas) podía sentirla vibrar a diferentes velocidades de hasta 150 mph cuando perdí mi botella

Vamos a enviarlos a Lepsons en el nuevo año, quienes con suerte pueden reparar las hebillas y volver a terminar para ser como nuevo otra vez.
[/CITAR]
Okay

 

[Gazcw]

The same thing happens to my car...

At 4000 rpm exactly. If i go faster, the car goes smoother again.

I had the same. Two cracked front wheels on inside edge. They were 4mm out of true and only vibrated between 120 + 130..

 

[Gazcw]

FWIW my experience with so-called fast road tyres is that they don't like sitting around unused. I presume the tyre compounds allow the carcass to flatten out a bit where its contacting the ground. Depending on the tyre pressure,but more importantly the ambient temperature, it takes quite a bit of driving to get rid of that flat spot which causes a vibration through the steering wheel at around 60 mph.
This flat spot effect is very pronounced with Formula Ford racing tyres which get very hot during a race. Unless you jack up all wheels off the ground while waiting for the next race they will get flat spots. These flat spots will shake out your tooth fillings at the start of a race but disappear as the tyres get up to temperature. If you don't like vibrating tyres use the car more often,jack up the car when not in use,move to southern Spain or fit ordinary tyres.

I read this winter, in a classics mag that if you are over-wintering your car, pump up the tyres close to their max to prevent flat spots

 

[TimR]

Stood up on ax;e stands over winter...dont worry about pressures dropping ( mine us3d to drop significantly over a few days)

 

[boomerang]

The automatic version driveshaft has a CV joint that wears, causing vibrations.
Had that, changed the CV joint, balanced the shaft afterwards, all smooth as silk again.

 

[babel 101]

[QUOTE = "boomerang, post: 690136, miembro: 310"]
La versión automática del eje de transmisión tiene una junta de CV que se desgasta, causando vibraciones.
Dicho esto, cambié la junta CV, equilibré el eje después, todo liso como seda otra vez.
[/CITAR] Bravo Bumerang!!!!!!:

 

[Raulpereg]

The automatic version driveshaft has a CV joint that wears, causing vibrations.
Had that, changed the CV joint, balanced the shaft afterwards, all smooth as silk again.

Hi Boomerang, is this something easy to do? Approx cost? Mine has vibrations too but I was told it is a flywheel in the axe that can be replaced just when changing the clutch. Was your problem always at speed or at some revs?

 

[Raulpereg]

After checking with dealer it seems to fix this is far more complex in the GS than 3200. In the 3200 the axe is not covered so easy to access. In the GS is inside a cover and you need to remove from motor or transmission side to access, so this is to be repaired when changing clutch....

 

[alfatwo]

I supose if you haven't run your old 3200, 4200 or GS up to speed for awhile, ie 130 mph+
You well might get some vibe's from the tires, wheels or the disk's....
Even in Germany, It's still hard to find somewhere you can still kick them flat out!

Dave

 

[Raulpereg]

I supose if you haven't run your old 3200, 4200 or GS up to speed for awhile, ie 130 mph+
You well might get some vibe's from the tires, wheels or the disk's....
Even in Germany, It's still hard to find somewhere you can still kick them flat out!

Dave

Tyres and disks are new in mine, so that shoul not be the issue. I have paid more attention and it seems is vibrating in a range of rpm, about 4000, but you feel it more in 6th at speed than in others. In the dealer they told me this is normal. So everything looks like the issue is the same Boomerang was having, but unfortunetely not so easy to fix as in the 3200

 

[davy83]

Final bearing from the gearbox the "extension housing" where it couples to the prop shaft, on the 3200 was what went on my 3200 and yes caused a lot of vibration at high speed and felt very strong through the gear lever. Once the prop was off it was not too hard to get at. no idea what the setup on the 4200 will be but its an engine speed prop not road speed so if its the prop shaft you should be getting vibration at high revs not neccessarily at high speed? If its really only high speed that creates the problem you need to be looking for a problem that is road speed.

 

[Raulpereg]

It is engine speed, happening around 4000 rpm, but it is more evident in 6th at speed. According to the dealer it is normal that vibrations are higher in an overdrive gear. Also in the other gears Im not usually keeping this rev range, just passing through. And in 6th passing this range and maintaining during some time means to stay over 170 km/h and I dont have too much opportunities to check that....