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Author Topic: speed wobbles  (Read 12175 times)

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Offline jesus_is_alright

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speed wobbles
« on: October 05, 2011, 07:11:57 PM »
At the moment I'm sitting on 100kph (I know some of you are jealous)
I can wind her up to 110+ but I get some serious shaking going on. The best way to describe it is a bad wheel balance, or the engine running the wrong firing sequence.
Now I know that its neither of these problems, because my mags are new and balanced.
Might be worth getting them re-aligned.
Also, the shudder can be felt through the steering wheel / column.

Any idea of what to check / replace first?
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-Aaron
How can i say this without hurting your feelings...Oh, I know, I don't want your stupid things in my cool van

Offline jesus_is_alright

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Re: speed wobbles
« Reply #1 on: October 05, 2011, 07:16:18 PM »
Ps, I know its a steering / suspension / wheels problem because I've killed the engine whilst driving at speed and its not affected it, so it can't be engine/trans. Also it feels like its frontend, not rear
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-Aaron
How can i say this without hurting your feelings...Oh, I know, I don't want your stupid things in my cool van

Offline ben

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Re: speed wobbles
« Reply #2 on: October 05, 2011, 07:32:20 PM »
you dont have drums on the front do you?

i would look at tailshaft angle first.

i dont know how they do it professionally but i would try raising back of tranz with a washer or 2 to see if it improves/ gets worse of course if it gets worse try spacing the tranz crosmember so your lowering the tranz.

ben
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Offline jesus_is_alright

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Re: speed wobbles
« Reply #3 on: October 05, 2011, 07:34:42 PM »
Yeah I got beddy drums on the front.
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-Aaron
How can i say this without hurting your feelings...Oh, I know, I don't want your stupid things in my cool van

Offline ben

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Re: speed wobbles
« Reply #4 on: October 05, 2011, 07:36:52 PM »
oh look at the drums then see if you can get them balanced. they wobble at high speeds if not i think.. not 100percent sure

ben
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Offline Banksx2

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Re: speed wobbles
« Reply #5 on: October 05, 2011, 07:58:33 PM »

When mine had the same problem it was a bent output shaft on the gearbox causing the tailshaft to wobble slightly. An out of balance tailshaft would do the same at higher speeds. It cost me a cracked Hadfield bell housing before I found it!
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It's not how hard you hit it - it's how you hit it hard

Offline jesus_is_alright

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Re: speed wobbles
« Reply #6 on: October 05, 2011, 08:00:00 PM »
I've had the drums machines, shoes re lined, all new wheel cylnders, so they 'should've be all good

Also modified and balanced tailshaft a few months ago
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How can i say this without hurting your feelings...Oh, I know, I don't want your stupid things in my cool van

Offline obsession

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Re: speed wobbles
« Reply #7 on: October 05, 2011, 08:07:28 PM »
Quote from: jesus_is_alright on October 05, 2011, 07:11:57 PM
At the moment I'm sitting on 100kph (I know some of you are jealous)
I can wind her up to 110+ but I get some serious shaking going on. The best way to describe it is a bad wheel balance, or the engine running the wrong firing sequence.
Now I know that its neither of these problems, because my mags are new and balanced.
Might be worth getting them re-aligned.
Also, the shudder can be felt through the steering wheel / column.

Any idea of what to check / replace first?
check your wheel bearings.
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ur a bedford owner ....adapt overcome work it out

Offline ben

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Re: speed wobbles
« Reply #8 on: October 05, 2011, 08:16:11 PM »
can you get front drums balanced? consider these drums originally designed with the beddy that only got up to 70 - 80kph max.

ben
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Offline Warren

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Re: speed wobbles
« Reply #9 on: October 05, 2011, 09:07:37 PM »
Also look at the rack to steering column coupling as well.

Warren
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I used to be vague..................Now I'm not so sure
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