Topic: Tank slapper when running on MTs (Read 2536 times)

pritch · « **on:** March 27, 2006, 09:02:53 »

After a long break, the MTs have come out of storage again.

However, there's a problem.

At low speeds, you can feel the vehicle rocking from side to side.
As you get faster, this turns into really quite an unpleasant vibration.
As you get up to 40mph and beyond, at intervals this vibration starts to come back through the steering, and turns into what I believe motorcyclists would term a tank slapper.

I'm thinking it's probably something like the wheels being out of balance and that I need to pay a visit to my local friendly tyre place. Unless anyone else has suggestions?

TimM · « **Reply #1 on:** March 27, 2006, 09:58:17 »

It does sound like your wheels are out of balance, so I'd get them checked/balanced and report back before looking any further

Jim-Willy · « **Reply #2 on:** March 27, 2006, 13:37:59 »

Yep my Grizzlys do that. Try getting them checked for balance.

Damonski · « **Reply #3 on:** March 27, 2006, 14:07:04 »

or change the wheels around to get the on the same axle/side as they were before they were put into storage

discoman · « **Reply #4 on:** March 27, 2006, 19:01:29 »

it could also be that one off the tyres are warped or the tread could have came away from the casing

JPJ · « **Reply #5 on:** March 27, 2006, 19:30:14 »

Are the tyres meant to be rotational in one direction only and are they rotating in the correct direction?
Did you check the pressures before you put them on as there's quite a difference between front and rear?

pritch · « **Reply #6 on:** March 27, 2006, 20:33:45 »

JPJ, I don't think they're meant to be directional.

Colway C-Trax MTs, anyone? Directional or not? They don't look directional, but they're outside, and I'm not.

Jim-Willy · « **Reply #7 on:** March 27, 2006, 21:01:03 »

Quote from: "pritch"

JPJ, I don't think they're meant to be directional.

Colway C-Trax MTs, anyone? Directional or not? They don't look directional, but they're outside, and I'm not.

They aren't directional.

dazzawhipple · « **Reply #8 on:** March 28, 2006, 08:20:34 »

I've had a simular thing I found that the UJ on the front prop was had it

Darren

pritch · « **Reply #9 on:** March 28, 2006, 12:42:06 »

God bless Kwikfit, they didn't actually charge me for sorting that out.

And they didn't laugh too much at the fact that I'd put all 20 wheel nuts on backwards.

The mounting holes in the wheels aren't too badly mangled, either. Which is nice.

Tyke · « **Reply #10 on:** March 28, 2006, 13:37:42 »

Quote

And they didn't laugh too much at the fact that I'd put all 20 wheel nuts on backwards

Good on you for admitting it - easy done I suppose :oops:

Anyway, you've found out why they are tapered now . . . . . to centre the wheels on the hub . . . . . no wonder it was wobbling a bit :lol:

You doing the Dales laning trip at the wekend now it's sorted then?

Go on - you know you want to

pritch · « **Reply #11 on:** March 28, 2006, 17:04:34 »

Quote from: "Tyke"

You doing the Dales laning trip at the wekend now it's sorted then?

Go on - you know you want to

Hmmmm... tricky. It still has a bit of a wobble; nowhere near the Wobble of Death that it had yesterday, but I'd still rather not drive it any huge distance until that's sorted, and I'm not going to be able to get the wheels balanced until the weekend. Looks like I'm not going to make it.

Tyke · « **Reply #12 on:** March 29, 2006, 09:27:08 »

Quote

Looks like I'm not going to make it.

Not to worry mate - there's worse things going on if you see the thread.

Several people running around with spanners for the last week or so - me included :lol:

muddyjames · « **Reply #13 on:** March 29, 2006, 14:09:37 »

Quote from: "pritch"

God bless Kwikfit, they didn't actually charge me for sorting that out..

Thats a first!!!

Quote from: "pritch"

And they didn't laugh too much at the fact that I'd put all 20 wheel nuts on backwards...

How do you put wheel nuts on backwards?

pritch · « **Reply #14 on:** March 29, 2006, 17:49:05 »

Quote from: "muddyjames"

How do you put wheel nuts on backwards?

Quite easily, especially if you're stupid.

muddyjames · « **Reply #15 on:** March 29, 2006, 17:53:24 »

I dont understand how you can do it as 99% of the wheel nuts I see are solid on 1 end and only have 1 hole with a thread on.

pritch · « **Reply #16 on:** March 29, 2006, 19:43:03 »

Quote from: "muddyjames"

99% of the wheel nuts I see are solid on 1 end and only have 1 hole with a thread on.

These will be in the other 1%, then ;)

muddyjames · « **Reply #17 on:** March 29, 2006, 19:44:32 »

If only I knew what the other 1% of wheel nuts that could be put on backwards were like!!

Snake110 · « **Reply #18 on:** March 30, 2006, 01:13:53 »

Quote from: "pritch"

God bless Kwikfit, they didn't actually charge me for sorting that out.

And they didn't laugh too much at the fact that I'd put all 20 wheel nuts on backwards.

The mounting holes in the wheels aren't too badly mangled, either. Which is nice.

[homer mode] DOH! [/homer mode] :(biglaugh):

ah well at least its ok now and you dident break anything.

Range Rover Blues · « **Reply #19 on:** March 30, 2006, 13:46:01 »

Quote from: "muddyjames"

If only I knew what the other 1% of wheel nuts that could be put on backwards were like!!

On Steel rims you need nuts that look like noraml car wheel nuts, but bigger ie a length of Hex bar with a conical end, drilled through and tapped out. The nuts clamp the flat centre plate to the hub which is then driven by the friction between the 2. Aftermarket wheel almost always locate on the studs rather than the centre of the hub and so require these 'countersunk' nuts.

Aloyys on the other hand locate on the centre of the hub and use a 'flat' nut with captive steel washer (to save wear) and subsequently are tightened to a different torque.

BTW it's not adviseable to use alloy nuts on such steel wheels unless they have the countersink or taper on them

Rostyles do locate on the hub BTW.

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AuthorTopic: Tank slapper when running on MTs (Read 2536 times)

Snake110