nheather Posted April 2, 2010 Share Posted April 2, 2010 I've just replaced a troublesome engine on my son's hyper 7. The new one appears to be running more consitently though I haven't got it set right just yet. One thing that seems odd, but I can't quite remember how it was before. At what point should the clutch engage. It now needs very high revs to engage, maybe 3/4 throttle - I'm sure before, the buggy would begin to creep forward if I had the idle set a little high. Wondering whether I've installed the clutch incorrectly. Cheers, Nigel Quote Link to comment Share on other sites More sharing options...
R46 Posted April 2, 2010 Share Posted April 2, 2010 if engine is running rich then clutch enages late as revs are sluggish, could be shoes fitted wrong or clutch shoes are worn. Quote Link to comment Share on other sites More sharing options...
nheather Posted April 2, 2010 Author Share Posted April 2, 2010 May be a little rich but it is reving very high when clutch engages. Clutch is little used so not wear. This leaves, fitted wrong, which I'm more than happy to beleive, though I've had a look at the instructions and can't see that I've down anything wrong. I fly Nitro Helicopters and the clutch bell on those has a lining. The clutch bell on the hyper 7 is just metal - is that right? Cheers, Nigel Quote Link to comment Share on other sites More sharing options...
nosripper Posted April 2, 2010 Share Posted April 2, 2010 (edited) May be a little rich but it is reving very high when clutch engages. Clutch is little used so not wear. This leaves, fitted wrong, which I'm more than happy to beleive, though I've had a look at the instructions and can't see that I've down anything wrong. I fly Nitro Helicopters and the clutch bell on those has a lining. The clutch bell on the hyper 7 is just metal - is that right? Cheers, Nigel Yes mate just plain metal. You havent got the shoes on backwards by any chance have you? if the Clutch Bell was tight (ie dosent spin freely) it should move in lower revs so really thats all i can consider Edited April 2, 2010 by nosripper Quote Link to comment Share on other sites More sharing options...
jon450 Posted April 2, 2010 Share Posted April 2, 2010 What size springs are fitted to the clutch 0.9mm or 1.2mm etc. As thicker springs need more rpm normaly used to stop engine bog. Quote Link to comment Share on other sites More sharing options...
nheather Posted April 2, 2010 Author Share Posted April 2, 2010 (edited) Clutch bell spins freely - that right isn't it? I double checked the install direction and it matches the manual. You may have misread - the clutch isn't engaging until the revs get very high - throttle barrel open over 50%. Like thye spings are so strong they are stopping the arms from flinging out - but I've looked at the videos and I have the spings installed correctly. What size springs are fitted to the clutch 0.9mm or 1.2mm etc. As thicker springs need more rpm normaly used to stop engine bog. No idea what size - they are the ones that come with the Hyper 7. Cheers, Nigel Edited April 2, 2010 by nheather Quote Link to comment Share on other sites More sharing options...
jon450 Posted April 2, 2010 Share Posted April 2, 2010 If its a standard Hyper then the shoes are normally plastic not metal. Metal is normally an aftermarket fitment so the springs my be thicker ones. My lads Hyper has plastic shoes. Measure the spring thickness I use verniers if you have them. The simple answer my be the shoes have just worn out. Quote Link to comment Share on other sites More sharing options...
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