MAP hubs

[Defender Mike]

Hi all,
My MAP hubs are a bit unusual I cant find any pics of another set the same. They have a flat blade screw to operate on the curved surface . No nut to turn in front of the axel. I want to pull them down and check them over but have no idea what's inside . Could these be auto hubs and the screw is to lock them in permanent or ?? . If anyone has any info would love to hear from you. Mike:)
PS have put tis o the Series 1 club UK as well.

[gromit]

I found some links but they were not active.

Nice pictures of different locking hubs but the MAP hub isn't like yours :-
Free Wheel Hubs (http://pangolin4x4.com/pangolin4x4/reference/lib/fwh/fwh.html)

Seems that Mayflower Automotive Products were taken over by Fairey (or at least the hubs & winch were).

Someone on the forum had MAP hubs, check the last post here http://www.aulro.com/afvb/series-iii/48567-removing-free-wheeling-hubs.html

Colin

[Defender Mike]

Hi Gromit,


Yes I had the same search results, I know the guys at Pangolin 4x4 in Oregon USA. I chat with them on facebook I have asked them about these hubs as well. Dale Radford from the Series 1 club UK says the screw in the side is for oil but mine has a in< >out arrow and seems to engage the hubs when in. Interesting that the photos of Thor hubs look identical to my MAP but mine has a MAP logo. I found mention of a court case between MAP and THOR perhaps they pinched the design. I found that the picture on the MAP logo is the ship the Mayflower it looked like Bob Marley's head to me and I couldn't work it out LOL.
I am going to play around with them a bit today and see what I can find out.
Mike:)

[Defender Mike]

Here's a better pic of the screw and funny enough it turns opposite to the instruction arrows .So to engage the hubs screw in to disengage screw out. The work ok I engaged them this morning and they work both forward and reverse there is a slight pause in the operation about half a wheel rotation while it re-engages from reverse to forward and back again . You can see this in the prop shaft movement. I think I may have a prototype hub here no one else seems to have anything similar they are either automatic with a oil hole or manual with a nut on the front. Maybe Annand & Thompson got a few prototypes to test or something. Fen boy on the Series 1 UK site gave me an advertising brochure from the time and a fitting instruction for the manual hubs but no mention of this type. I amn sure they have not been modified as the engraving for in < out > is factory even if it is around the wrong way.:)
Mike

[Northern Lander]

Hi Mike,
There was some debate on the S2 club forum re this type of FWH.
I had a set fitted to my 52 and pulled a set of a 59 SII not long ago, the screw in the side is to lock them in as it has a pin that is pushed down as you screw it in.
Inside they have a set of roller bearings held in with a sprung metal band (like a rubber band), Been awhile since I pulled one fully apart.
They also have a nut with a seal surface that replaces the outer hub nut.
Thats about all I can remember for now as I dont have access to the hub at the moment, when I do I can post pics.
Hope this helps

Wardy

[Defender Mike]

Thanks Wardy ,

Pics would be great . If there are bearings and bands then things will wear and may need replacing before I do the Canning Stock Route trip.
Mike

[numpty]

I have MAP FWH's on my 88", but they are the same as the ones on the link which Gromit posted.

[back_in]

Hi
I have several of this type, they work well
their one failing is the slotted heads will move when locked and unlocked
from memory they sit in a plastic cup that wears
you turn the screw with a 20 coin or screw driver
cheers
Ian

[107gus]

I have a set of what I think are these, will have to check when I get home in a few days. If your interested, I will send them for the cost of post. In Oregon though, so might be a bit expensive?

[gromit]

LAND ROVER 'MAYFLOWER PRODUCTS' FREEWHEELING HUBS SALES SHEET CIRCA 1960? | eBay (http://www.ebay.co.uk/itm/LAND-ROVER-MAYFLOWER-PRODUCTS-FREEWHEELING-HUBS-SALES-SHEET-CIRCA-1960-/360594577270?nma=true&si=mpobtxZfh3U6CvPJ1vnSJLVHXi0%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557)


Colin

[Defender Mike]

LAND ROVER 'MAYFLOWER PRODUCTS' FREEWHEELING HUBS SALES SHEET CIRCA 1960? | eBay (http://www.ebay.co.uk/itm/LAND-ROVER-MAYFLOWER-PRODUCTS-FREEWHEELING-HUBS-SALES-SHEET-CIRCA-1960-/360594577270?nma=true&si=mpobtxZfh3U6CvPJ1vnSJLVHXi0%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557)


Colin

I have this, a member of the UK series 1 club sent it through to me but its for the Auto hubs .
Mike:)

[clubagreenie]

I had a set of power locks as listed on the linked page.

I have seen MAP's on a friends S2 years back. The actuating nut in the centre is the same size as the S2 wheel nuts (the ones with the taper at both ends) so no need for extra tooling.

[Northern Lander]

Hi Mike,
I will try to get some pics for you however unless someone beats me to it.
I wont be able to do it until after Aug 2nd due to work though.

Wardy

[bobslandies]

Hi all,
My MAP hubs are a bit unusual I cant find any pics of another set the same. They have a flat blade screw to operate on the curved surface . No nut to turn in front of the axel. I want to pull them down and check them over but have no idea what's inside . Could these be auto hubs and the screw is to lock them in permanent or ?? . If anyone has any info would love to hear from you. Mike:)
PS have put tis o the Series 1 club UK as well.

Hi Mike,

Is the main body of these FWHubs brass or bronze? I have a pair that have bronze-looking bodies and pressed steel end caps (from memory - they are in storage so can't get at them at the moment), made by MAP.

Unfortunately most of the internals are missing.

Bob

[Northern Lander]

Mike found these pics on the SII forum, they are of the auto locking hubs but very similar for the internals, and yours will have the pin that winds down to lock between the rollers.

Wardy

[Defender Mike]

That's an odd looking bearing hope I can replace them if they are worn.
Mike

[Mustlust]

63025

63027

Spares may be a challenge, internal springs are quite tiny.:o
Musty

[Defender Mike]

So mine are not the only ones out there. PM sent Musty send me your pics of inside should be able to work out whats going on in there.

[dennisS1]

Had a set on my 107, Problem with them grabbing all on their own.
The thing that looks like a bearing expands to lock up the unit, all the little pin does is stop it from turning so that it expands.
If they grab you get a very nasty nose and shudder as your front axle and tail shaft goes from stoped to 75Km/h instantly.
Dennis

[Defender Mike]

That expanding bearing thingy looks just like a starter clutch on a KTM motorbike. Different size of course but same idea. Does anyone know what these are called may be able to buy an off the shelf size.
Mike:)

[bobslandies]

Hi Mike,

In the MAP Automatic Hubs it's basically a lockable free-wheeling device. Generally they are known as a sprag or ramp clutch.

See the Renold's explanation:

Sprag Clutch (http://www.renold.com/Products/SpragClutchFreewheels/Sprag-Clutch.asp)

Bob

[andy_d110]

If you are planning on using the 109" for the CSR I would refit standard drive flanges instead of FWH.

One less thing to worry about.

[Defender Mike]

Hi Mike,

In the MAP Automatic Hubs it's basically a lockable free-wheeling device. Generally they are known as a sprag or ramp clutch.

See the Renold's explanation:

Sprag Clutch (http://www.renold.com/Products/SpragClutchFreewheels/Sprag-Clutch.asp)

Bob

Yep that's correct now I remember on the KTM starter the part is called sprag clutch. Not to reliable, I think mine died twice due to me stalling the bike then hitting a relite while rolling without the clutch pulled in OOPsy thats expensive.
Mike:)

[Defender Mike]

If you are planning on using the 109" for the CSR I would refit standard drive flanges instead of FWH.

One less thing to worry about.

Yes I have been driving around this week with them locked in and really don't notice the difference except for a bit of a hummm at over 85 kph which I rarely exceed anyway. But the hubs do look good LOL
Mike