robbybobby Posted November 8, 2011 Report Share Posted November 8, 2011 I publish my first post out of pure ignorance but I can't seem to find any info on the matter. It seems most bikes run a 5 or 6 speed gear box. Just wondering if all those gears and the added weight are necessary? Quote Link to comment Share on other sites More sharing options...
chewy Posted November 8, 2011 Report Share Posted November 8, 2011 Wellcome to the forums. Fortunatly a few of us are still able to find and ride trials with interzone or tracks/rough country to cross between sections e.g. SSDT average of 100 miles a day. with this in mind yes higher gears are needed. Whilst all weight is relevant a few gears down in the heart of the motor /gearbox /C.O.G. are far less relevant than e.g. a full tank of fuel on most bikes. Quote Link to comment Share on other sites More sharing options...
b40rt Posted November 8, 2011 Report Share Posted November 8, 2011 I have a BSA B40 with 4 gears, wish it had 5 or 6. To many compromises with only 4, IMO. Quote Link to comment Share on other sites More sharing options...
old trials fanatic Posted November 8, 2011 Report Share Posted November 8, 2011 As anybody who has ridden a Scottish Pre65 "legal" Bantam will know you cant have too many gears. If you havent just try to imagine a three speed Bantam on trials gearing on the road. You dont need a speedo a calander would be more appropriate Anybody remember the Alta Suzuki with three speed box, or was it four? i seem to recall it was three, that had a lever on the top of the cranckcase to change to high or low ratio for the whole box. Never really caught on but seemed a good idea to me anyway. Quote Link to comment Share on other sites More sharing options...
axulsuv Posted November 8, 2011 Report Share Posted November 8, 2011 As anybody who has ridden a Scottish Pre65 "legal" Bantam will know you cant have too many gears. If you havent just try to imagine a three speed Bantam on trials gearing on the road. You dont need a speedo a calander would be more appropriate Anybody remember the Alta Suzuki with three speed box, or was it four? i seem to recall it was three, that had a lever on the top of the cranckcase to change to high or low ratio for the whole box. Never really caught on but seemed a good idea to me anyway. Sounds like a honda trail 90 with the dual range gearbox .... Quote Link to comment Share on other sites More sharing options...
jandyb Posted November 8, 2011 Report Share Posted November 8, 2011 (edited) I publish my first post out of pure ignorance but I can't seem to find any info on the matter. It seems most bikes run a 5 or 6 speed gear box. Just wondering if all those gears and the added weight are necessary? If you ever pull a GasGas Pro gearbox apart you`ll realise that the "extra" gears doesnt drive the weight.. Take a look at this document http://www.trialspartsusa.com/diagrams/Pro%20Transmission%20gears.doc -Jan Edited November 8, 2011 by JanDyb Quote Link to comment Share on other sites More sharing options...
robbybobby Posted November 8, 2011 Author Report Share Posted November 8, 2011 I suppose if your travelling far distances on the bike then the gears would be great to have. The land that my club leases isn't all that vast and is quite steep and rocky. I was thinking more along the lines of comp specific bikes for riding short, technical sections. Quote Link to comment Share on other sites More sharing options...
jandyb Posted November 8, 2011 Report Share Posted November 8, 2011 I suppose if your travelling far distances on the bike then the gears would be great to have. The land that my club leases isn't all that vast and is quite steep and rocky. I was thinking more along the lines of comp specific bikes for riding short, technical sections. Thats exactly how their build for both technical sections AND travelling. Dont know the gear ratios, but the first four is very low geared, and fifth and sixth are high for travelling. -Jan Quote Link to comment Share on other sites More sharing options...
jandyb Posted November 8, 2011 Report Share Posted November 8, 2011 I suppose if your travelling far distances on the bike then the gears would be great to have. The land that my club leases isn't all that vast and is quite steep and rocky. I was thinking more along the lines of comp specific bikes for riding short, technical sections. Thats exactly how their build for both technical sections AND travelling. Dont know the gear ratios, but the first four is very low geared, and fifth and sixth are high for travelling. -Jan Quote Link to comment Share on other sites More sharing options...
robbybobby Posted November 8, 2011 Author Report Share Posted November 8, 2011 That hurts my brain... I assumed the more gears you have, the more cogs there would be in the gear box (if those are the right terms even). Bear with me. I'm new to this. Quote Link to comment Share on other sites More sharing options...
robbybobby Posted May 9, 2012 Author Report Share Posted May 9, 2012 Now that ive been riding a bit im glad i have all those gears... 1 Quote Link to comment Share on other sites More sharing options...
tankygsy Posted May 9, 2012 Report Share Posted May 9, 2012 You dont need a speedo a calander would be more appropriate Lol classic! Quote Link to comment Share on other sites More sharing options...
0007 Posted May 11, 2012 Report Share Posted May 11, 2012 I don't think weight is much of an issue anymore, they ae at minimum weight and inside the transmission is kind of a good spot for heavy parts Quote Link to comment Share on other sites More sharing options...
ham2 Posted May 11, 2012 Report Share Posted May 11, 2012 If you ever pull a Gas Gas Pro gearbox apart you`ll realise that the "extra" gears doesnt drive the weight.. Take a look at this document http://www.trialspar...ion%20gears.doc -Jan I 've got microsoft Word but that document is blank when I open it...a bit like me? Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted May 11, 2012 Report Share Posted May 11, 2012 bou's only has 4 Quote Link to comment Share on other sites More sharing options...
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