Gazzar Posted March 17, 2023 Share Posted March 17, 2023 Any plastic experts on here? What type of plastic would work as an inter leaf shim material? Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted March 17, 2023 Share Posted March 17, 2023 I'd guess UHMWPE or similar - very slidy stuff. 1 Quote Link to comment Share on other sites More sharing options...
Gazzar Posted March 17, 2023 Author Share Posted March 17, 2023 Tough enough? It doesn't deform or anything? Quote Link to comment Share on other sites More sharing options...
Daan Posted March 17, 2023 Share Posted March 17, 2023 For friction coeficient, PTFE (teflon) is best. Ideally teflon to teflon, so you would need 2 layers. other wise nylon will be ok I'd say. Are these the 101 springs? Not sure if they have the joggle at the end like aftermarket ones do. This means they only touch at the bushing ends, 1 Quote Link to comment Share on other sites More sharing options...
landroversforever Posted March 17, 2023 Share Posted March 17, 2023 Oilon would work nicely.... but I've only seen it as a thicker 'plate' rather than anything shim-like. 1 Quote Link to comment Share on other sites More sharing options...
Gazzar Posted March 17, 2023 Author Share Posted March 17, 2023 Yes, 101 springs. They taper in their length, and touch at the ends. No joggle. I did wonder at putting a shim along the full length to eliminate wear. But no idea how that would work. Quote Link to comment Share on other sites More sharing options...
Gazzar Posted March 17, 2023 Author Share Posted March 17, 2023 11 minutes ago, landroversforever said: Oilon would work nicely.... but I've only seen it as a thicker 'plate' rather than anything shim-like. There are so many plastics, I'm easily confused. 1 Quote Link to comment Share on other sites More sharing options...
Snagger Posted March 18, 2023 Share Posted March 18, 2023 PTFE would be good. It was used for its non-binding under high load and general thermal and chemical stability on the wing pivots on Tornado, so should be good at producing non-bind for breakout forces on springs. The only concern I have is it getting abraded by dirt, but it will still protect the steel regardless. Quote Link to comment Share on other sites More sharing options...
landroversforever Posted March 18, 2023 Share Posted March 18, 2023 6 hours ago, Snagger said: PTFE would be good. It was used for its non-binding under high load and general thermal and chemical stability on the wing pivots on Tornado, so should be good at producing non-bind for breakout forces on springs. The only concern I have is it getting abraded by dirt, but it will still protect the steel regardless. I’d be worried about adding a softer material to the spring packs that can get abrasive materials embedded in it. That’s then just going to abrade everything. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted March 18, 2023 Share Posted March 18, 2023 There's special dry moly based lubricant spray available, try a Google search, may have been Wurth or Ambersil. Quote Link to comment Share on other sites More sharing options...
hurbie Posted March 18, 2023 Share Posted March 18, 2023 i would take the springs apart , clean and paint , then put them together with some normal grease between the leafs (where they touch). Quote Link to comment Share on other sites More sharing options...
Gazzar Posted March 18, 2023 Author Share Posted March 18, 2023 Yes, that's the plan. Quote Link to comment Share on other sites More sharing options...
Snagger Posted March 19, 2023 Share Posted March 19, 2023 19 hours ago, hurbie said: i would take the springs apart , clean and paint , then put them together with some normal grease between the leafs (where they touch). That’s all I have ever done. Some people like more, and some parabolics have plastic slipper blocks, but I don’t think parabolics need anything more than an occasional clean and grease. Quote Link to comment Share on other sites More sharing options...
hurbie Posted March 19, 2023 Share Posted March 19, 2023 i work with HGV's and these use a lot off parabolic springs , i hardly ever see plastic spacers in use . in the middle where the leafs touch each other and the strops are placed , there's normally a steel spacer (i wouldn't use plastic here because this will get compressed and cause the strops to get loose). at the end of the leave's there's normaly a rubber or plastic "slipper" pad , these are the only place's paraballics touch each other . Quote Link to comment Share on other sites More sharing options...
Gazzar Posted March 19, 2023 Author Share Posted March 19, 2023 I think the plastic shims were fitted from new from the factory. I doubt the MOD fitted them and this truck wasn't used after being cast. Quote Link to comment Share on other sites More sharing options...
hurbie Posted March 19, 2023 Share Posted March 19, 2023 2 hours ago, Gazzar said: I think the plastic shims were fitted from new from the factory. I doubt the MOD fitted them and this truck wasn't used after being cast. did the 101 came with parabolic springs from the factory ? Quote Link to comment Share on other sites More sharing options...
Gazzar Posted March 19, 2023 Author Share Posted March 19, 2023 They're taper leaf springs as standard. Quote Link to comment Share on other sites More sharing options...
landroversforever Posted March 19, 2023 Share Posted March 19, 2023 36 minutes ago, Gazzar said: They're taper leaf springs as standard. What do you mean by taper leaf springs Gazzar? Quote Link to comment Share on other sites More sharing options...
Gazzar Posted March 20, 2023 Author Share Posted March 20, 2023 They get thinner as you go away from the axle. Can't spell elliptical. 1 Quote Link to comment Share on other sites More sharing options...
landroversforever Posted March 20, 2023 Share Posted March 20, 2023 Ahh thank you! Quote Link to comment Share on other sites More sharing options...
Gazzar Posted March 20, 2023 Author Share Posted March 20, 2023 There will be photos soon, on the build thread. Quote Link to comment Share on other sites More sharing options...
Gazzar Posted March 23, 2023 Author Share Posted March 23, 2023 I asked the nice lady at plastics direct and she suggested HDPE. Apparently that's a type of plastic. I've bought a strip of that. I'll need to figure how to cut a nice tidy hole in it, but judging by the variation in the original LR shims, it's not that crucial.... Quote Link to comment Share on other sites More sharing options...
hurbie Posted March 23, 2023 Share Posted March 23, 2023 a stepped drill works wonders on plastic , i use it to make shims for the Eurover project. 1 Quote Link to comment Share on other sites More sharing options...
Gazzar Posted March 23, 2023 Author Share Posted March 23, 2023 Interesting! I've loads spare to play with. Quote Link to comment Share on other sites More sharing options...
hurbie Posted March 23, 2023 Share Posted March 23, 2023 Just now, Gazzar said: Interesting! I've loads spare to play with. just get one that's really sharp ! 1 Quote Link to comment Share on other sites More sharing options...
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