jon v8 Posted April 18, 2012 Report Share Posted April 18, 2012 As part of my refurb / upgrade project on my HT I want to sort out the gear ratios. It currently has a standard GB road box,which has been made low geared enough with a large rear sprocket and small engine one.But although first is fine,second is too big a jump - then third and top are all done by about 25mph ! So looking at what was originally supplied as a wide ratio box i now know what I need to change.Knowing that the 4 individual cogs,(Mainshaft sleeve,2nd gear mainshaft - then the two layshaft gears they mesh with) are like hens teeth,I wondered about the new ones that were around little while ago.(Why didnt I just buy them then ? ) Are they the same tooth count as the original trials sets or have they gone even lower ? And who was it that did them ? Quote Link to comment Share on other sites More sharing options...
ariel_ht5_john Posted April 19, 2012 Report Share Posted April 19, 2012 As you say the standard HT Box GB47 had a what they called a wide ratio. Second gear closer to first. Third as standard ration then a jump to forth. The gears that Mick Ash had made had an extra wide ratio, jump to forth to get a better road speed. Many years ago i found a Burman box with reverse gear i found that i could use one set of the gears for third gear. My third gear was like a std road box second i could pull third in some sections. Quote Link to comment Share on other sites More sharing options...
jon v8 Posted April 19, 2012 Author Report Share Posted April 19, 2012 I've been given Mick Ash's number so I might give him a ring,but I've also got a sniff on some original wide ratio gears,I'll maybe find out at our charity trial on sunday,(Plug,plug ! ) what they are likely to be condition/cost wise. Quote Link to comment Share on other sites More sharing options...
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