lukewhiting Posted July 25, 2012 Posted July 25, 2012 Hi, just got my xt125x today and took it for a ride. Everyone was saying i should be getting at least 70 with it but on the longest bit of road there is i only got 51mph!!! i weigh 13.5 stone so i dunno if weight makes much of a difference? but does anybody have any ideas of how to get a higher top speed either cheaply or just by fiddling about!?
XTXADAM Posted July 26, 2012 Posted July 26, 2012 iv had 68 mph out of mine so far and i got mine a few days ago i wasnt pushing it either
lukewhiting Posted July 26, 2012 Author Posted July 26, 2012 Mines only getting to 51mph though! It runs fine it just doesnt make sense
XTXADAM Posted July 26, 2012 Posted July 26, 2012 what reg is your bike mines an 08 and as i said iv had 68mph so far and the previous owner reconed he had 74mph still without pushing the bike so my advice would be to take it to a garage
Grouch Posted July 26, 2012 Posted July 26, 2012 All you can do is get a slip on exhaust which even then will give you a few extra HP. With it being a 4T engine, you can't do out to them. My XT does about 60-65.
XTXADAM Posted July 26, 2012 Posted July 26, 2012 i was the same wasnt sure at first but then i decided supermoto as you get to use them on and offroad as they say the best of both worlds
lukewhiting Posted August 1, 2012 Author Posted August 1, 2012 mines an 08 model without any mods. im getting it serviced soon so ill see what Yamaha say
XTXADAM Posted August 1, 2012 Posted August 1, 2012 yeah probably the best thing to do . just wandering are you anywhere near the midlands
Moderator Cynic Posted August 1, 2012 Moderator Posted August 1, 2012 dunno if weight makes much of a difference? Run 400 meters and see how fast you did it, then repeat it carrying a 25k sand bag. Weight is bad, removing it is THE best performance mod you can make, unfortunately you see big fat knackers ooozing from their romper suits yawning on about saving an ounce with a new set of fairing bolts for a million quid from a bike that has been put on a serious diet by the makers.. Japaneese bikes are designed to work with a 75kg around 10st (typical jap) rider, they just bang on stiffer springs for us lardy europeans. Your 35% heavier than the gearing was created for so your going to lose performance. Or your bike needs to make 16-17hp to compensate.
pilninggas Posted August 1, 2012 Posted August 1, 2012 Do you wear a billowing jacket and/or trousers? a loose fitting jacket that catches the air, can slow any bike down (or mean more throttle), particularly one with less than 15bhp - likewise a topbox can do the same. I find wearing my leather jacket always means less throttle (a surprising amount less) for high-speed cruising than my textile jacket.
lukewhiting Posted August 7, 2012 Author Posted August 7, 2012 im down in sunny dorset! haha bit hard to loose weight cause im a rugby player so most of its muscle not fat. & i just wear a jacket, its not very baggy & it fits quite well. BUUUUUT! its all ok now!!! i went out riding with a yamaha xt660x and he asked my topspeed & i said about 55. on a straight he said to go full pelt & his speedo was reading about 68 and mine was saying 55! took it to the poole yamaha dealer & apparently the bike can 2 different wheel sizes (mine being the smaller set) so when i was doing 30mph i was actually doing 40....good luck i hadnt been through any speed cameras yet! so when i got home i disconnected the battery, left it for 30minutes, connected it all back up & held in the blue computer button on the bars when the letters on the screen said ntrd....or sommit instead of endr. Then took it for a test drive and hit 68 on a slight downhill with a strong head wind! which i wouldnt say is too bad for a completly stock bike & one with only 10hp! cheers for the help though guys
lukewhiting Posted August 7, 2012 Author Posted August 7, 2012 Another thing.... went and got a new plug for the bike (exactly the same as whats in there, CR6HSA) but when i looked up the GAP on the ngk website the recommended plug for the bike is a ngk cr7hsa....will this matter much?
Prichard XT Posted August 13, 2012 Posted August 13, 2012 best top end i ever got was 75 mph that took some nice piece of road on a decline but its had alot of tweeking sound like a monster now
Ryan09 Posted August 15, 2012 Posted August 15, 2012 Another thing.... went and got a new plug for the bike (exactly the same as whats in there, CR6HSA) but when i looked up the GAP on the ngk website the recommended plug for the bike is a ngk cr7hsa....will this matter much? I think the only difference between the 2 plugs is the actual length of the whole plug, dont quote me on this though. So both should be fine.
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