Sudden Grinding Sound From Rear Wheel

[Lotus49]

Do you think so?...they look sheared off to me! What is the damage to the rim was my question.
Whatever, it needs sorting before driving the car!

Alan.

Can the car be pulled onto a flatbed and driven to a shop safely? Any risk of damage I'm not aware of?

[Sadbrewer]

Do you think so?...they look sheared off to me! What is the damage to the rim was my question.
Whatever, it needs sorting before driving the car!

Alan.

I could be wrong Alan, but I think I can see daylight through the nearest one, which would suggest it's dropped out completely, had it sheared off I would have thought the back half of the peg would be stuck in the hub.

[Elanman99]

It looks to me that the origin of the problem was the spinner not being tight enough.

The noise Tom(?) heard whilst he drove the car back to his home was probably the inside of the ali wheel grating against the lower wishbone bolts heads.

Running with the spinner (central nut) loose will be the most likely cause of the missing pegs, As the weight of the car lands on each peg in turn it will have the effect of slowly ejecting each pin a bit at a time. The pins are a press fit (although that does not mean a press is essential to install them) but the pins are designed to take shear loads, but importantly that load should be very close to the hub face which it when the wheel is tight.

With the nut loose that load is applied to the pin some distance from where it emerges from the hub face so the pins sees an alternate repetitive bending motion. The remaining pins look to be part ejected.

I think pegs with sort of flat heads are or were available, they could only be inserted from the rear and whilst its not ideal I have seen them held in place with a small tack weld.

Ian

[mbell]

So the wheel was loose, possibly due to having grease on the thread. It also is missing some drive pegs.

I just use a dead blow hammer to tighten mine. Hit it until they stop moving. Drive it a little bit and re tighten.

Imo it's fine to be moved and even driven at low speed as is to load up to be taken for the drive pegs to be sorted.

I was able to replace the pins in front hubs on mine using a ball joint splitter tool. I ran my car few years with a few missing on the front. No issues as long as wheels are kept tight. Not really advisable thou, especially on the rear

[pharriso]

Yes, safe to flat bed to a garage for repair….

[h20hamelan]

is it safe to say, putting new peg drives in bag in freezer overnight. with holes clean, they will go into place fairly easily, maybe some light tapping with hammer/drift

edit, suppose retaining compound is recommended?

if Lotus49 is confident

[Sadbrewer]

is it safe to say, putting new peg drives in bag in freezer overnight. with holes clean, they will go into place fairly easily, maybe some light tapping with hammer/drift

edit, suppose retaining compound is recommended?

if Lotus49 is confident

No...they are a tight interference fit and should be pressed in..if they go in easily...they can come out easily,
You need to check every hub...if the pegs tap out easily they need replacing with exactly the right peg...do not put any trust in any type of retaining compound. If they go in easily due to corrosion in the holes, that is metal lost for the interference fit, in my opinion you would then need new hubs for peace of mind.

Please do not be reckless, just think of the consequences should the wheel come loose at high speed...for your own safety and that of your expensive vehicle this needs sorting properly.

[Lotus49]

is it safe to say, putting new peg drives in bag in freezer overnight. with holes clean, they will go into place fairly easily, maybe some light tapping with hammer/drift

edit, suppose retaining compound is recommended?

if Lotus49 is confident

No...they are a tight interference fit and should be pressed in..if they go in easily...they can come out easily,
You need to check every hub...if the pegs tap out easily they need replacing with exactly the right peg...do not put any trust in any type of retaining compound.

Please do not be reckless, just think of the consequences should the wheel come loose at high speed...for your own safety and that of your expensive vehicle this needs sorting properly.

Yes, I want to get this car into a shop as soon as possible. Somehow I have to find a flat bed driver that knows how to pull one of these onto his truck safely. Hopefully the Lotus shop knows someone.

Unlike my Elise, there's no obvious strong point that the truck can latch onto to pull the car onto the truck.

[Elanman99]

is it safe to say, putting new peg drives in bag in freezer overnight. with holes clean, they will go into place fairly easily, maybe some light tapping with hammer/drift

edit, suppose retaining compound is recommended?

if Lotus49 is confident

Its likely that the holes in the flange will now be a slightly larger diameter or not plain parallel so even new pegs might be a loose fit.

Tom.
I suggest you look at the three (or is just two?) remaining pegs and see if any of the peg projects out of the rear of the flange. If the back face of each peg is not flush or slightly proud of the hub casting then you can do no harm tapping it so that the projecting part length matches say, one of the front wheel pegs. If its taps in easily then it is time to get some specialist assistance.

H20hamelan
That must be quite some freezer you have!
From memory pegs are 3/8" diameter, freezing them in liquid nitrogen (-200C) is only going to reduce their diameter by less then one tenth of a thou. From ambient temp down to food freezer temperature it would need very expensive kit to measure the change in diameter.

Ian

PS, have you examined the inner rear part of the ali wheel to see if it has been gouged where it rubbed against the bolts

[Sadbrewer]

is it safe to say, putting new peg drives in bag in freezer overnight. with holes clean, they will go into place fairly easily, maybe some light tapping with hammer/drift

edit, suppose retaining compound is recommended?

if Lotus49 is confident

No...they are a tight interference fit and should be pressed in..if they go in easily...they can come out easily,
You need to check every hub...if the pegs tap out easily they need replacing with exactly the right peg...do not put any trust in any type of retaining compound.

Please do not be reckless, just think of the consequences should the wheel come loose at high speed...for your own safety and that of your expensive vehicle this needs sorting properly.

Yes, I want to get this car into a shop as soon as possible. Somehow I have to find a flat bed driver that knows how to pull one of these onto his truck safely. Hopefully the Lotus shop knows someone.

Unlike my Elise, there's no obvious strong point that the truck can latch onto to pull the car onto the truck.

Although this is contrary to my previous advice, taking into account the difficulty of getting it on a truck, if you can get all the pegs in reasonably tightly, you may be able to have it together enough for a slow drive if the garage is not too far...perhaps stopping periodically to check the tightness with the mallet.

[Elanman99]

Yes, I want to get this car into a shop as soon as possible. Somehow I have to find a flat bed driver that knows how to pull one of these onto his truck safely. Hopefully the Lotus shop knows someone.

Unlike my Elise, there's no obvious strong point that the truck can latch onto to pull the car onto the truck.

[/quote][/quote]



Surely the car can be driven up the ramps onto a trailer or flatbed?

As you say there is not much to hook onto under a plus 2 but if it could be pulled up, it could also be pushed up by its own rear wheels.

Ian

[Lotus49]

Although this is contrary to my previous advice, taking into account the difficulty of getting it on a truck, if you can get all the pegs in reasonably tightly, you may be able to have it together enough for a slow drive if the garage is not too far...perhaps stopping periodically to check the tightness with the mallet.

Sadly, my repair shop is 36 miles from my home so not close.

[Lotus49]

Yes, I want to get this car into a shop as soon as possible. Somehow I have to find a flat bed driver that knows how to pull one of these onto his truck safely. Hopefully the Lotus shop knows someone.

Unlike my Elise, there's no obvious strong point that the truck can latch onto to pull the car onto the truck.

[/quote]



Surely the car can be driven up the ramps onto a trailer or flatbed?

As you say there is not much to hook onto under a plus 2 but if it could be pulled up, it could also be pushed up by its own rear wheels.

Ian[/quote]

I never thought of that. Maybe that's a possibility. I'll have to ask.

[h20hamelan]

Your tow truck will have a wheel lift/stinger arm.
If you dont want to deck it

[Lotus49]

Your tow truck will have a wheel lift/stinger arm.
If you dont want to deck it

I do not want to drag the car 36 miles to the shop. Michigan roads are some of the worst roads in the US. There would be almost certain damage from hitting huge pot holes along the way.