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Ive ridden a ton of big bore,grew as hollister hills in my back yard... when it comes down to it ,its usable tractable power .who care what it weighs.there a lot of late model 2 strokes in steel chassis (ktm,husky,etc) .if were looking for a say 78-83 bike in a big bore 2 stroke id be looking for a 81...

Bearuno Liked a reply to forum topic Best air cooled motor for conversion

11/9/2018 12:52am
Ah yes, the comparison that had an extra 15lbs added to the steel 500s weight......... The same bike, in mid 90s tests by the mag, was weighed out at 230 / 232lbs. Perhaps they weighed the 500 with a full tank, in 2004? MXA , do write some things that don't add up.. My steel framed 500s, match the weight of the AFs I've made. The aluminium frames, are actually heavier than the steel frames. Even the latest models, which have slimmed down considerably. The only weight an AF conversion can save from the donor bikes, is lighter ancillaries, such...
This forum topic has 99 replies.

stevee401 Liked a reply to forum topic Best air cooled motor for conversion

11/9/2018 12:49am
I vote 82 RM465. My dad just got one and it runs really really good. I was totally suprised on how crisp it ran. Only thing I didnt like were the ergo's. Super fun bike.
This forum topic has 99 replies.

Suns_PSD Liked a reply to forum topic Best air cooled motor for conversion

11/9/2018 12:46am
My stock 2008 KTM 250SX w/ a 300 cylinder and heavy Flexx Bars weighed an honest 210# scale verified. Ready to ride, no fuel. Those bars were a 2# weight gain. Buy a 2011 KTM 250SX (still PDS), add an Ohlins rear shock, another brand's air forks, tubeless wheels, $500 seat foam, etc you could get it to sub 200# quite easily and without even breaking the bank. Oh yah, you could keep the water cooling as well. That particular model also happens to be the absolute fastest of the KTMs because of the straight air intake allowed w/ the...
This forum topic has 99 replies.

Madmax31 Liked a reply to forum topic Best air cooled motor for conversion

11/9/2018 12:44am
I've ridden a lot of bikes beginning in 1977. I'd always heard how great the Maico 490 motor was but really doubted it. I mean how could an old chain driven primary, no power valve, cobby appearing, Bing carb'd motor really be any good at all, much less the "best". I can tell you it's absolutely amazing. Smooth yet amazingly fast, broad, you name it. It's the sh*t. Not sure how much it weighs, but it's an amazing motor.
This forum topic has 99 replies.