It seems that with the advent of the 1100 motors, performance 900 builds are becoming a thing of the past.
When I joined the forum, hot 900 builds were common with people fitting hi comp pistons, big bore kits, cams, bigger valves, porting and light internals.
Everyone's moved on mate!
It's all about the hot 750's these days! ;D
We'll have to finish the bloody thing so you can do a hot 750 thread. ;)
Check out Yorkies builds. All three of them. :D
Hot 900's are too easy.
Real men build hot 750's.
;D
Nibor would agree with you. ;D
Yes he would [beer]
I have finaly got time for my projekt. Frame painted in gold :o Next in line is hom made struts to the shortened front mudguard, new bracket for seat/fueltank, cambelts, shorai battery under seatpan and so on.... Tank to be painted flat black...
I think this is a hot 900 :D
(https://scontent-lhr3-1.xx.fbcdn.net/hphotos-xpf1/v/t35.0-12/12562797_10153186273087096_1952162214_o.jpg?oh=8feadd8185c1c30ce4cd1704ac8044e2&oe=56B1A1A6)
[thumbsup]
What you doing to the motor?
Changed heads from W2 to V1, lightly homeported, keihin 41mm with as big K&N filters I could fit, lighten flyweel. Should be OK [thumbsup]
Very cool. How much weight you take off the flywheel? Which pods on the carbs?
Im offshore and dont have my papers here.... I think the flywheel ended on 1250grams, but not sure....
I bought K&N RX-4040-1 :)
(https://scontent-lhr3-1.xx.fbcdn.net/hphotos-xtp1/v/t34.0-12/12665752_1013679168675583_787415829_n.jpg?oh=c038e101f31ef4d6e84846659938994b&oe=56B1C664)
Thight fit, but its there :)
What fun! Looks great!
Once I get back on the $$ saddle, I'll show you my 620/750 . . . ;D
I am trying to make sure most of mine loose as much weight as possible.
Primary gears:
(http://i1286.photobucket.com/albums/a615/Yorkie13/Ducati%20Monster/IMG_0068_zpsb4f5363c.jpg) (http://s1286.photobucket.com/user/Yorkie13/media/Ducati%20Monster/IMG_0068_zpsb4f5363c.jpg.html)
Butchered clutch cases:
(http://i1286.photobucket.com/albums/a615/Yorkie13/Ducati%20Monster/Cafe%20Racer/IMG_1489_zpseewubrdf.jpg) (http://s1286.photobucket.com/user/Yorkie13/media/Ducati%20Monster/Cafe%20Racer/IMG_1489_zpseewubrdf.jpg.html)
(http://i1286.photobucket.com/albums/a615/Yorkie13/Ducati%20Monster/IMG_1387_zpsbfjkqa0k.jpg) (http://s1286.photobucket.com/user/Yorkie13/media/Ducati%20Monster/IMG_1387_zpsbfjkqa0k.jpg.html)
Lightened adjustable cam wheels:
(http://i1286.photobucket.com/albums/a615/Yorkie13/Ducati%20Monster/image_zps21qrvvr2.jpeg) (http://s1286.photobucket.com/user/Yorkie13/media/Ducati%20Monster/image_zps21qrvvr2.jpeg.html)
Alloy intakes:
(http://i1286.photobucket.com/albums/a615/Yorkie13/Ducati%20Monster/Ducati%20750SS%20Project/photo65_zps61892af5.jpg) (http://s1286.photobucket.com/user/Yorkie13/media/Ducati%20Monster/Ducati%20750SS%20Project/photo65_zps61892af5.jpg.html)
And where possible a lightened fly wheel (this one is from my ST2 - 5kgs down to 1.3kgs):
(http://i1286.photobucket.com/albums/a615/Yorkie13/Ducati%20Monster/20141215_121818_zps88130f12.jpg) (http://s1286.photobucket.com/user/Yorkie13/media/Ducati%20Monster/20141215_121818_zps88130f12.jpg.html)
Yorkie.
Turned down stock M900 flywheel:
(http://i855.photobucket.com/albums/ab117/Monsterhpd/Monster%20Forum/P2010001_zpshimnutwo.jpg) (http://s855.photobucket.com/user/Monsterhpd/media/Monster%20Forum/P2010001_zpshimnutwo.jpg.html)
On a kitchen scale it weighted in at 930 g, on a fishermans scale 0.95 kg, maybe symptomatic for that sport .... we've had a flywheel like this one on out SSie900 rain day track bike with no problem.
The steel in the flywheel is quite hard, and I would not do it if I did not have the sintered-steel machineing tips, don't know what they're called in english.
In about 2009 I started a project for a St2-based track day bike, but due to family and work obligations and some other things that turned up, I never got beyond the engine:
(http://i855.photobucket.com/albums/ab117/Monsterhpd/Monster%20Forum/P2010003_zpsgtaqw4hj.jpg) (http://s855.photobucket.com/user/Monsterhpd/media/Monster%20Forum/P2010003_zpsgtaqw4hj.jpg.html)
Kämna 45/39 heads, Pistal hicomp pistons, Autoverdi rods, balanced and lightened crank, lightest Kämna alu flywheel, new crankcases (with piston cooling jets), close-ratio gearbox from a Monster900 / 2002. The motor has been standing in my garage since 20012 or so, and in the meantime everybody running 2V bikes have turned up with 1100 motors.Powerwise, the 1100's more or less take off where this engine might end, I'd be happy with 98-100 horses in this one.
The motor in the rain bike now has something like 80k km on it, has started to sound very rough, so time permitting I'll put this motor in it, just to see how it works. We'll see ...
(http://i855.photobucket.com/albums/ab117/Monsterhpd/Monster%20Forum/P6240191_zpse53cc1f0-1.jpg) (http://s855.photobucket.com/user/Monsterhpd/media/Monster%20Forum/P6240191_zpse53cc1f0-1.jpg.html)
For track days, I've given in, an now have a 749R with a HYM1100 motor in it, Stock, so far,, and otherwise work in progress ...
(http://i855.photobucket.com/albums/ab117/Monsterhpd/HPD0R%201100/20150710_144552_zpswdcyngqd.jpg) (http://s855.photobucket.com/user/Monsterhpd/media/HPD0R%201100/20150710_144552_zpswdcyngqd.jpg.html)
Very cool. [thumbsup]
Schweeeet!