alexlowe Posted January 4, 2015 Report Share Posted January 4, 2015 Hi all, I've just replaced a 2012 GasGas 250 TXT with a new 2015 Beta Evo 200. On the GasGas, I put a slow action throttle, a flywheel weight and a low compression head insert. These mods made the bike very easy to ride with smooth power. In fact, my friend who I sold the bike to came with me to a trial today and on one particular section, I could only clean it after asking to have a go on my old GasGas! I have a slow action throttle on the Beta but is it possible to fit a low compression head insert as I haven't been able to find any on the web. I'm not worried about the flywheel weight as this seems to have had the least changing effect on my old bike. Thanks. Quote Link to comment Share on other sites More sharing options...
burns1989 Posted January 4, 2015 Report Share Posted January 4, 2015 I never thought you could buy a low compresion heads for trials bikes . Try vhm they do cylinder heads for motocross bikes but not sure if they did for trials . Quote Link to comment Share on other sites More sharing options...
inchhigh Posted January 4, 2015 Report Share Posted January 4, 2015 S3 does them but not sure if you can get them for the 200.you could try another base gasket. Quote Link to comment Share on other sites More sharing options...
copemech Posted January 5, 2015 Report Share Posted January 5, 2015 Sounds like you need to learn the bike! Before changing a lot of stuff! The bike works fine! 4 Quote Link to comment Share on other sites More sharing options...
dixie Posted January 5, 2015 Report Share Posted January 5, 2015 Also the bike will soften when you have fully run it in. Can't see the 200 needing any mods, just got one myself, and it is lovely and soft/smooth, as has been stated, spend some time riding it before you fiddle. 1 Quote Link to comment Share on other sites More sharing options...
dan williams Posted January 8, 2015 Report Share Posted January 8, 2015 According to the S3 catalog http://www.s3parts.com/product_trial.html pg23 they only offer a high compression head for the 125 and low and high compression heads for the 250 and 300. I agree with the above though that the 200 is a lovely soft bike and you just need a little more time to get used to it. Quote Link to comment Share on other sites More sharing options...
shyted Posted January 9, 2015 Report Share Posted January 9, 2015 (edited) Try talking to Stan Stephens tuning . He Might be able to re machine the head to accept a modified combustion chamber,providing theres enough to work with .It's worth a call even if he says no as he may offer an alternative solution. I'm speaking from experience . Putting a base gasket on might work as sugested above . Then again it may alter the port timing to much. Talk to Stan before you spend anything.What that man doesn't know about two strokes ain't worth knowing. Edited January 9, 2015 by shyted Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted January 10, 2015 Report Share Posted January 10, 2015 If its got an insert take this out and get a bit machined out ~ if you really want to? My opinion is you need to practice more, if a 200 with a slow throttle is too much then I'm surprised. Quote Link to comment Share on other sites More sharing options...
shyted Posted January 10, 2015 Report Share Posted January 10, 2015 (edited) Agreed on the above too . Just stay out of your pocket for now. Edited January 10, 2015 by shyted Quote Link to comment Share on other sites More sharing options...
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