Sambecky1989 Posted May 17, 2014 Share Posted May 17, 2014 Hi all I have a Hpi savage x 4.1 Today just took it for a blast round the field and doing nothing strenuous and all of a sudden the truck stopped and wouldn't go It revs and runs fine just won't drive Any ideas???? Thanks Quote Link to comment Share on other sites More sharing options...
big-beefy-1978 Posted May 17, 2014 Share Posted May 17, 2014 Check the slipper is tight and check the pins havnt came loose in the gearbox / diff cups Quote Link to comment Share on other sites More sharing options...
Nitroholic Posted May 17, 2014 Share Posted May 17, 2014 Have you got a reverse module? If so...that can get stranded between gears and do that as well. Usually though, it's the slipper clutch. If there is no threadlock on the drive cups, the pins do work loose and fall out. If it's none of the above...then it's time to break out the spanners Quote Link to comment Share on other sites More sharing options...
Sambecky1989 Posted May 17, 2014 Author Share Posted May 17, 2014 Could someone give me picture break down of what I need to check etc please Here are pics of the truck now And no mine hasn't got reverse Quote Link to comment Share on other sites More sharing options...
Nitroholic Posted May 17, 2014 Share Posted May 17, 2014 Either your clutch bearings have failed or the screw in the end of hte crank that holds it on has fallen out. The clutch bell has come right off as far as it can go and is only held in place by the spur....which if it was plastic....would have just shredded. Pop the engine out and have a look at the clutch bell, bearings and shoes. Quote Link to comment Share on other sites More sharing options...
Ian w Posted May 17, 2014 Share Posted May 17, 2014 There something a bit wrong here first of your slipper clutch is not level your spur gear is running to far back on the clutch bell and there seems to be a pile of grey dust under the clutch bell. So engine out clutch bell of and try and see what is happening. Nitro just beat me to it Quote Link to comment Share on other sites More sharing options...
Sambecky1989 Posted May 17, 2014 Author Share Posted May 17, 2014 I take it the spur gear is the big to other gear at top of assembly if so this when spun is wonky (sort of not flush one side but is the other) I shall see what I can see and do and please follow this post as totally new to stripping it down etc and will need help cheers Quote Link to comment Share on other sites More sharing options...
Ian w Posted May 17, 2014 Share Posted May 17, 2014 Yeah that is the spur gear and because the clutch bell has moved forward it has put a lot of pressure on it it may be o/k when you get the clutch bell sorted Quote Link to comment Share on other sites More sharing options...
Sambecky1989 Posted May 17, 2014 Author Share Posted May 17, 2014 Been looking closer and think the fixing screw is to blame ya reckon??? Quote Link to comment Share on other sites More sharing options...
Ian w Posted May 17, 2014 Share Posted May 17, 2014 Yeah it could be but you still need to take the engine out to find out where that grey dust has come from. When it comes to putting together don`t forget to use liquid thread lock. Quote Link to comment Share on other sites More sharing options...
Sambecky1989 Posted May 17, 2014 Author Share Posted May 17, 2014 Ok mate any specific thread lock needed, just really nervous bout taking it apart as first timer lol Quote Link to comment Share on other sites More sharing options...
Ian w Posted May 17, 2014 Share Posted May 17, 2014 Use blue thread lock just take your time and if you feel happier put the bits in seperate envolopes and write on them where they came from 1 Quote Link to comment Share on other sites More sharing options...
Sambecky1989 Posted May 17, 2014 Author Share Posted May 17, 2014 Progress Looks like a bearing has split apart??? Quote Link to comment Share on other sites More sharing options...
Nitroholic Posted May 17, 2014 Share Posted May 17, 2014 Yep...those are the bearings the clutch bell runs on. Both are completely shot. One is totally disintegrated, and the other has shed it's shields and is about to follow. Cheap to replace. Needs doing from time to time. Get your bearings from RC bearings rather than 'genuine HPI'. I bought ten for around 1 Quote Link to comment Share on other sites More sharing options...
Ian w Posted May 17, 2014 Share Posted May 17, 2014 Yup as Nitroholic said the bearings have given up. So you need to get 2 clutch bearings if you can stretch to it I would also get a new clutch bell. The obvious cause of this is that a sometime water or damp has got into the clutch this has caused thge back bearing to go rusty and you can see some residue rust on the shaft. You need to get whats left of the bearing of the shaft then with some oil and fine emery paper rub that rust of. Nitro beats me again Quote Link to comment Share on other sites More sharing options...
Sambecky1989 Posted May 17, 2014 Author Share Posted May 17, 2014 Yep...those are the bearings the clutch bell runs on. Both are completely shot. One is totally disintegrated, and the other has shed it's shields and is about to follow. Cheap to replace. Needs doing from time to time. Get your bearings from RC bearings rather than 'genuine HPI'. I bought ten for around Quote Link to comment Share on other sites More sharing options...
Ian w Posted May 17, 2014 Share Posted May 17, 2014 Just do a search for clutch bell bearings and savage slipper clutch on e bay. Quote Link to comment Share on other sites More sharing options...
Ian w Posted May 17, 2014 Share Posted May 17, 2014 I als think the clutch shoes are in the wrong way they should be running clokwise not anti clockwise Have a look at this video Quote Link to comment Share on other sites More sharing options...
Ian w Posted May 17, 2014 Share Posted May 17, 2014 (edited) http://www.ebay.co.uk/itm/10-Clutch-Bell-bearings-5x10x4mm-HPI-Savage-Hyper-7-8-9-/250578418129?pt=UK_ToysGames_RadioControlled_JN&hash=item3a57a339d1 http://www.ebay.co.uk/itm/HPI-Slipper-Clutch-Pad-2pcs-Savage-MT-2-Rush-etc-72131-/281315554256?pt=UK_ToysGames_RadioControlled_JN&hash=item417fb6b3d0 Edited May 17, 2014 by Ian w Quote Link to comment Share on other sites More sharing options...
Sambecky1989 Posted May 18, 2014 Author Share Posted May 18, 2014 Still slightly confused about what I need Is it 2x clutch bell bearings Possible clutch bell?? The spur gear slipper clutch is the bit confusing me most do I just need slipper pads or the whole lot gear, pads, etc Thanks and sorry for the questions Quote Link to comment Share on other sites More sharing options...
Ian w Posted May 18, 2014 Share Posted May 18, 2014 From what I can see from the picture you just need the pad. Check it over carefully but you should be able to clean off the old pad and stick on a new one Yes to 2 bearings clutch bell depends how damaged it is. 1 Quote Link to comment Share on other sites More sharing options...
Sambecky1989 Posted May 18, 2014 Author Share Posted May 18, 2014 From what I can see from the picture you just need the pad. Check it over carefully but you should be able to clean off the old pad and stick on a new one Yes to 2 bearings clutch bell depends how damaged it is. Thanks Are there meant to be metal pins sticking out this wheel for the metal disc to sit on??? Also while cleaning notice two other things I need lol Engine brace things as one is cracked and split And the plate itself is cracked near the top right screw Quote Link to comment Share on other sites More sharing options...
Ian w Posted May 18, 2014 Share Posted May 18, 2014 (edited) Yeah should be 2 pins that it sits on http://www.ebay.co.uk/itm/HPI-NITRO-SAVAGE-X-ENGINE-PLATE-BRACES-HPI-105896-/201092698585?pt=UK_ToysGames_RadioControlled_JN&hash=item2ed20f11d9 http://www.ebay.co.uk/itm/hpi-savage-slipper-clutch-hub-86130-new-/400711032756?pt=UK_ToysGames_RadioControlled_JN&hash=item5d4c3d1fb4 Edited May 18, 2014 by Ian w Quote Link to comment Share on other sites More sharing options...
Nitroholic Posted May 18, 2014 Share Posted May 18, 2014 I got a drawer full of the motor plates, and may well have a brace....I'll have a look. Clutch bell looked OK, and as long as the tetth are not damaged, it will be fine. Just replace the bearings once you check the teeth. They looked OK in the pics...but it's easier to tell in the flesh. The back plate for the slipper clutch has 2 pins that go into the steel disc. They shouldn't stick out firther than the front face of the metal disc. They locate it on the backplate. The backplate is keyed to the gearbox input shaft. So....the motor drives the spur gear. The spur gear will drive the metal disc as long as there is enough friction. The metal disc then turns the backplate via the 2 pins, and that drives the gearbox. The amount of friction is controlled by the spring and nut. The tighter that is...the more friction you get. The idea is that shock loads will cause the assembly to slip, preventing damage to the drivetrain 2 Quote Link to comment Share on other sites More sharing options...
RCbutcher Posted May 18, 2014 Share Posted May 18, 2014 (edited) Does the slipper plate have pegs for the disk to line up then? My slipper disk is off centred like its just hanging then clamped. Edit. Nitro anwserd that. Thanks ill also check mine. Ps. Did anyone link to the correct clutch bell bearings I could use two aswel. Edited May 18, 2014 by RCbutcher 1 Quote Link to comment Share on other sites More sharing options...
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