Is there a prop maker you can think of / recommend for custom work? Thanks

I see your point that a DC is also described as a 'CV' joint, although not like the ball type image I'd been looking at. This article is very good... sorry the address line is so long! Google Image Result for http://www.pirate4x4.com/tech/billavista/PR-shaft/degreecv.jpg

Tried that one - didn't work at all. Even the double carden is not close to constant velocity, it has a cyclic variation in speed. If the angles are out of sync at each end of the prop, then one end will always be rotating momentarily at a different speed from the opposite one - in each...

I've just sold my 1971 series 2a lightweight to a local chap. He has delivered it to his mechanic already, to replace the petrol engine with a Disco 200tdi. He would like an accompanying modern gearbox in there also to replace the recon series 3 box I had put in last year. I don't think this...

Hello to any boffins According to my research, there may be props out there which have a CV joint on each end rather than a UJ - is this true? I ask because it may be a good way to rid oneself of vibration caused by lifting a Defender - when everything else just doesn't work. I think the...

I used 3mm chequer plate on my door bottoms, great for replacing rotten or pitted skins or can be placed over them. I coated the back of the plate with etch primer and then a skin of waxoyl. I riveted them on, but I also used Tec 7 sealant round the top and sides. I left the bottom open so...

Em probably not the reply I was expecting. Supplier has asked me to run it for 500 miles, as has another helpful chap on here via mail. The noise is not getting worse at this stage, but it is annoying. Oil is correct - EP90 and it's definitely fitted correctly by dealership mechanics - I...

I just got a recon transfer box fitted by my mechanic. It is whining. the mechanic said it might pass as the recon box might be 'tight' and may need to wear in. Is this possible? Symptoms: Whines at higher speeds, but only after a few minutes of warming up With clutch depressed or...

Scott that looks like classic binding on the yokes - the way they catch before turning. What was the outcome in the end? I have a new t box in and the castor correction bushes removed. Put new Uj's on the double carden. Still getting vibration. Mechanic says diffs are fine. I'm wondering...

Scott Good work fella! I am going to do this test too now. Luckily I have a good spare 12 spline sitting in my garage if needs be.... I am running smoother now with my front prop off - a wee bit of vibration but no grinding noises. Still think I can live with the altered steering...

Cheers guys - I got him to read the thread and try out the suggestions so will let you know...

Excellent article on this subject! What's My Gear Ratio?

Just make sure what T box you have got in there at the moment - should be some kind of marking on the back of it to tell you either the ratio or a serial no you could look up.

Mine too - you could always get some replacement marine dials if it's buggin' ye enough.

This is helpful YouTube- How to Calculate a Rear Differential Gear Ratio

Checked it again. One wheel in the air at any time - ten rotations of front tyre then back tyre - 17.75 rotations of each respective diff flange. I guess that works out at the right ratio if you factor in the other axle wheel as a mulitplier (x2).

Not pointless when you think the last assh-le to own the vehicle, based on other discoveries, might have put a different diff in each axle. I am checking because my props are getting chewed and t boxes worn out.

So if me and my mate spin a rear wheel forward each at the same time - that diff will turn at the stated correct ratio?

Jacked up the rear axle on my 1988 Def 90 yesterday. Wheels are on drums so don't spin for long but they turned nicely. A bit of sideways play there ie knocking a bit when tyre pulled back and forth - bearings? I worked out that one tyre revolution produced 1.75 turns of the diff flange...

Thanks Fanatic - I will get him to try this ;-)