fabsj Posted January 3, 2008 Share Posted January 3, 2008 Hello to all and to all a Happy New Year does any one have any idea what size rose joints would be best to fit to the rear trailing arms on a 300 tdi disco am very good at manufacturing and skint so am making my own to answer the question of why not just buy the arms before it gets asked Quote Link to comment Share on other sites More sharing options...
Chris Abel Posted January 4, 2008 Share Posted January 4, 2008 Hello to all and to all a Happy New Year does any one have any idea what size rose joints would be best to fit to the rear trailing arms on a 300 tdi disco am very good at manufacturing and skint so am making my own to answer the question of why not just buy the arms before it gets asked dont bother using rose joints on trailing arms, i had a set of scrapiorn ones and the lasted 4 events before they were making horible knocking noises, ive now fot a set of gigglepin arms that use the johnny joints. by some johnny joints and make your own trailing arms if you want to save some ££ johnny joints Quote Link to comment Share on other sites More sharing options...
Young bobtail Rhys Posted January 4, 2008 Share Posted January 4, 2008 dont bother using rose joints on trailing arms, i had a set of scrapiorn ones and the lasted 4 events before they were making horible knocking noises, ive now fot a set of gigglepin arms that use the johnny joints. by some johnny joints and make your own trailing arms if you want to save some ££ johnny joints I was thinking on using the QT rose jointed arms and a-frame joint, so would that be a silly thing to do now then? Or do I just buy cranked ones because my budget is a bit low and can't stetch to the likes of gigglepin's prices, (I still haven't bought any tyres for my bob yet!) I thought that the rose jointed ones would give free movement on my rear axle as I am running scorpion springs and the gwyn lewis kit. Quote Link to comment Share on other sites More sharing options...
maverick Posted January 4, 2008 Share Posted January 4, 2008 I v got a set of j/joint rear arms for sale 40mm od tube 10mm wall standerd rear L/R bush mounts on to std 3 bolt fixing with bracket and adjustable Quote Link to comment Share on other sites More sharing options...
russ1 Posted January 4, 2008 Share Posted January 4, 2008 What kind of price you looking for?? Thanks Quote Link to comment Share on other sites More sharing options...
fabsj Posted January 4, 2008 Author Share Posted January 4, 2008 yes maverick i would also be interested in your trailing arms how much are you after ? if not what size jonny joints are you using thread/bore ? Quote Link to comment Share on other sites More sharing options...
general-confusion Posted January 4, 2008 Share Posted January 4, 2008 for jonny joints call chris at exact fabrication Quote Link to comment Share on other sites More sharing options...
Milemarker Type S Posted January 4, 2008 Share Posted January 4, 2008 for jonny joints call chris at exact fabrication Here Shrek Quote Link to comment Share on other sites More sharing options...
fabsj Posted January 5, 2008 Author Share Posted January 5, 2008 dont bother using rose joints on trailing arms, i had a set of scrapiorn ones and the lasted 4 events before they were making horible knocking noises, ive now fot a set of gigglepin arms that use the johnny joints. by some johnny joints and make your own trailing arms if you want to save some ££ how long will a set of johnny joints last Quote Link to comment Share on other sites More sharing options...
TomG Posted January 5, 2008 Share Posted January 5, 2008 Pretty well i'd imagine, they're sealed, greasable (presumably to push any dirt back out) and made of good quality stuff. If you do wear the bushings out, they're rebuildable. More info on em here: http://www.currieenterprises.com/CEStore/johnnyjoints.aspx Having seen them in the flesh on my mate's project truck, they're quite large in diameter (compared to the average sized LR joint) so i think they'd be fairly understressed. Quote Link to comment Share on other sites More sharing options...
maverick Posted January 5, 2008 Share Posted January 5, 2008 £120 the pair with bolt on mounting brackets for chassis Quote Link to comment Share on other sites More sharing options...
russ1 Posted January 5, 2008 Share Posted January 5, 2008 Maverick PM sent Quote Link to comment Share on other sites More sharing options...
simonr Posted January 5, 2008 Share Posted January 5, 2008 how long will a set of johnny joints last They will be fine. Good life expectancy in muddy conditions. The problem with Jonny Joints is the max angular offset they will achieve. They are often quoted as 30 degree which is correct, but it is 15 deg in either direction. A standard A frame ball joint moves 17 deg in either direction. There are two common solutions to this. 1. Use a J Joint on each end of the radius arm - which doubles the available offset. This does require modification of the axle end mounting though. 2. Allow the radius arm to twist on the thread where the joint screws into the arm. This gives unlimited rotational offset and is probably quite safe - but it's not a 'nice' solution from an engineering point of view. One or two people have used this method, but sleeved the bit where the joint screws in to the shaft with something like silicone hose which is stretchy enough that it can be secured with hose clips and still not tear. This prevents ingress of mud into the thread and works pretty well. Si Quote Link to comment Share on other sites More sharing options...
alan kemp Posted January 8, 2008 Share Posted January 8, 2008 I have JJ on my 3 link (supplied by Maverick) and they are still good after 2 years of comps. I have bought 8 JJ's from Currie enterprises, they cost more if you buy direct, I got mine through Tim at Straight Forward Supplies at areasonable price. Quote Link to comment Share on other sites More sharing options...
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