Hi all, At the end of April I'm riding my hyo from Adelaide to Bright, Bright to Mildura then Mildura to Adelaide. I'm curious as to what speed the various members here would ride their 250 on such a trip. My bike sits at around 8500 rpm at 100kph so even though its 2k under the red line sustaining that speed for long periods of time would surely shorten the life of the engine.
People have ridden postie bikes around Australia...but I wouldn't do it you will need to keep the speed down and gear for a low RPM/higher speed ratio.. The engine should be fine the issues can be with metal and mental fatigue,It gets tiring running at high rpm and slow speed for long periods.....so lots of small hops helps,also with consistent high rpm things tend to brake and fall off
For a start, that seems to be revving a bit hard to be only 2,000 below redline. Can you get a bigger front sprocket (one or two teeth more) to drop the revs a bit? Bright is a nice area, I was through there last November. You will have to keep up to 100Km/h any where there is traffic so you don't hold others up and cause them to take stupid risks to overtake you. Any area where there is little or no other traffic I like to sit on about 90Km/h (but keep a good eye on your mirrors for vehicles coming behind you). This gives me enough time to look around at the countryside (being a retired farmer I am always looking to see what it going on around the paddocks) but to still get where I want to be within reasonable time. Plan your stops before you leave and always carry a bottle of water with you for regular drinks to keep hydrated. I find flavoured milk good too, liquid plus a bit of sugar to keep alert. Enjoy the ride, it's the best way to travel our great country.
The factory would have geared the bike to run at optimum revs at cruising speed .... does it have the standard sprockets on it ? .... number of teeth is stamped on the sides Engines are made to rev not stop, start ,low speed traffic with the motor labouring I rode my Hyo on weekend trips and it did it easily .... cant remember what the revs at 90-100kmh was though Looks like 14t is stock for front http://www.rpmmoto.com.au/Store/Spr...250-2004---2015-JT-front-sprocket--steel.aspx and 46t for the rear http://www.rpmmoto.com.au/Store/Spr...T250-2002---2015-JT-rear-sprocket--steel.aspx
Agree what other have commented on with changing out your front sprocket if all possible with at least one tooth larger. When there's no one behind just back it off and just take it easy and enjoy the ride. Purchase a camel back if you haven't got one already , fill it with iced chilled water and ice cubes , this is what i used to use back in the days.
Going by the gearing commander the GT250R has 14/46 gearing http://www.gearingcommander.com/ This means that the engine is doing 7350rpm at 97km/h, redline is at 10,500rpm Changing the front sprocket from a 14t to a 15t will make it do 7100rpm at 100km's This is a 7% gearing difference, so you'll lose 7% of your engine's torque but gain 7% in top speed Not sure how comfy the Hyo is but i need to stretch my leg's every 100km's travelled on the FZR250 Might pay to look into a lambswool seat cover or a gel/air seat cover for your longer trip's
Looks like theres a 13t in the front as that gives u 8400 rpm at 103.9 kmh in theory Someones tried to give it a little oomph down low
yeah i have a 13/46 tooth sprockets. That would explain the high revs. The bike is surprisingly comfortable for a sports bike. I rode it for 4 hours yesterday and besides a slightly sore throttle wrist I pulled up feeling good.
Yea the Hyo is pretty comfortable ... its a fairly 'large' bike all round for a 250 and has a nice wide seat ... compared to the FZR anyway
Sounds like you need to go at least to the standard 14 tooth, even go to 15 for your trip and change back when home again.
After what I've read on here I'm looking at putting a 15/44 sprocket ratio on the bike. This means the engine should be at around 6700rpm at 100kph. Hopefully that doesn't load the engine to much
Just be careful going too many teeth difference at once without a test ride or 2 .... u maybe surprised at how different it feels ... I would change the front first then ride it before doing more so u can compare The Hyo is no high revving, power delivering bike and u may loose wats needed to accelerate , which u still need on a lengthy trip I had a standard rear and a 15t front initially on the FZR ... 17t being stock ..... zippy round the streets but a shocker on the open road ..... after changing to the 17t it was just right and u could really feel the difference ...... but of course the FZR redlines at 18,500 rpm so theres always going to be plenty of get up and go regardless As I always say .... those little Japanese guys in the white coats that design , engineer and produce these things usually get it pretty right ..... and the Hyosung was developed by a small bunch of ex Suzuki workers
cool. I'll try the 15 tooth front and ride it for a little and see how it feels. regardless when i get back im putting a 14 on the front.
