Quote:
Originally Posted by
EddieS
Hi Kev
I ride a XT660Z with 3rd Stage airfilter,Powercomander V and Leo Vince Pipes. 14T Front and 45 Rear sprockets.
Question: Why is the XT limited to 7000 RPM and can that be changed? What would the effect be of say a 8000 RPM limit?
Regards
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put simply,
Limit is to keep stresses within acceptable levels. Its a big bit of metal going up and down in there and is changing direction 14,000 times a minute at 7000 revs. Engines with multiple cylinders rev much faster because the weight of the piston is much lower for a given CC and they compensate for each other when they change direction. Generally, increasing revs on a big single won't do much other than help to send it to a scrap yard earlier than would otherwise be the case. Big singles are not supposed to rev fast.
Al.
Sorry, Just noticed this was addressed to Kev, apologies for sticking my nose in.
Al.