 | Home > Puma (Tdci) > Drive Flange Identification |
 
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| X4SKP Member Since: 29 Nov 2013 Location: Berkshire Posts: 2288   
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Hello All
Does anyone recognise the Drive Flange Type shown on the left... 
They are both 'standard' 24 spline Drive Flanges, Front & Rear (the push on rubber cap type). The left hand Flange has the 'lugs' recessed to accept an H8 Hexagonal Drive Bolt which when fitted leaves the Bolt Head projecting around 1mm proud of the Flange. The right hand Flange is conventional, fixed by M17 Bolts I'm trying to source the left hand Flange Type...  Click image to enlarge Thanks... SKIP https://www.defender2.net/forum/topic83242.html |
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1st Apr 2017 1:50pm |
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| ickle Member Since: 22 Jul 2010 Location: South Vendee Posts: 1728  
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The metal is so thin around the socket head bolt, looks to me if someone has drilled a std one out - are the bottoms of the recesses angled as if drilled or flat as if milled?
Keith |
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1st Apr 2017 1:58pm |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
spline worn-out too
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1st Apr 2017 2:19pm |
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| X4SKP Member Since: 29 Nov 2013 Location: Berkshire Posts: 2288
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Hello Keith ickle
They have been machined (square bottom) so an End Mill approx' Dia 16.0mm to a Depth of around 10.0mm leaving a base thickness of 5.0mm You may be right though, that this is a modification to a Standard Part, as you wouldn't design it with a wall thickness at its outer most edge to be so thin. Mine has Wheel Spacers and the conventional Bolt Head wont work within the rear recess of the Spacer, the bolt head projects around 2-3mm too far. SKIP https://www.defender2.net/forum/topic83242.html |
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1st Apr 2017 2:31pm |
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| X4SKP Member Since: 29 Nov 2013 Location: Berkshire Posts: 2288
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Hello dorsetsmith Yes...both my rear Drive Flanges have 'fretted' (somewhat...  )
I have replacement Drive Shafts ready to go and need to work around / with is... Currently head scratching... SKIP https://www.defender2.net/forum/topic83242.html |
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1st Apr 2017 2:35pm |
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| ickle Member Since: 22 Jul 2010 Location: South Vendee Posts: 1728
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When I ran aluminium spacers (30mm iirc) on my 100" bitsa, I used to shim the bolts so the flats lined up with the edge of the spacer and they fitted well - where is the interference issue on the spacer / wheel?
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1st Apr 2017 2:58pm |
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| X4SKP Member Since: 29 Nov 2013 Location: Berkshire Posts: 2288
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Hello Keith ickle (Thanks for your input...
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The interference (insufficient space) would be between the combined 'top surface' of the 5 Fixing Bolts on the Standard Drive Flange if fitted and the rear of my current Spacer. I think I have my answer... This is my current Spacer (outside) Click image to enlarge This is my current Spacer (inside) Click image to enlarge This is my Current Spacer (left) against a Rakeway Spacer (used to carry my Spare Wheel) Click image to enlarge There is a 10mm difference and this is crucially enough to accept the Standard arrangement of Drive Flange and conventional Bolt Heads. My Vehicle was modified by BLR, and it is possible that they (or someone) took a 'creative engineering' route to make this particular Spacer (left hand one) work. I could not source it when I managed to source a 5th (matching) Wheel and so ended up with a Rakeway (which looks good to me) as a way of carrying the Spare Click image to enlarge I think I'm going to replace all 4 current Spacers with 4 matching Rakeway Spacers, new Drive Flanges also on the Front, new Drive Flange Bolts all round so that the set up is more or less back to standard for the Drive Components anyway... I'm not going to adapt the new Drive Flanges along similar lines, and the existing Spacer cannot be adapted as the rear of the inserted Studs would need to be machined, the only other option is to reduce the heads of the standard Bolts to half their height so also not really a solution. I'm really please with the 90 overall it drives great, but this is now going to be sorted, it may be part of the reason that the rear Flanges loosened up as there appears to be no loctite used in their installation and you can't see them hidden within (behind) the Spacer Oh well...better end result (when I get there) and no loss of drive out on the road...which was where I was heading Thanks... SKIP https://www.defender2.net/forum/topic83242.html |
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1st Apr 2017 4:35pm |
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| mk1collector Member Since: 17 Sep 2009 Location: West Yorkshire Posts: 6769  
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From the pics it looks like there should be more than enough depth on the spacer to fit a standard drive flange with hex bolts. Ray
My build thread http://www.defender2.net/forum/topic17615.html |
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1st Apr 2017 6:54pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 16879 
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As others have suggested that is a standard flange which has been counterbored to accept the capscrews. It is a trivial machining job and would usually be done with a piloted counterbore in a vertical mill.
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1st Apr 2017 8:48pm |
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