Martin77 Posted October 20, 2008 Report Posted October 20, 2008 Here's my NSR-D 350..... It's an MC21SE chassis with a 350YPVS engine... Not to mention the Aprilia RS125 oil tank, RGV tank, RS250 seat unit, side frame cradles made from GP100 frame tubes, bits of wiring from a '68 Hoovermatic Hotpoint washing machine (twin tub) and a grommet from a Tomos moped. Weight without fuel or 2 stroke oil is 135kg, which is pretty good going considering the ungainly mass of the bigger engine. The engine has been tuned to give a wide spread of power and a strong midrange, peaking at just over 70hp, which is a little more than I expected The only work I didn't do myself was some aluminium welding and the final lacquering of the bodywork.... I think the total cost was only about £1600, though it's had a new crank and engine rebuild since then....
Rompy McPoot Posted October 20, 2008 Report Posted October 20, 2008 Smart work!! So, what's she like to ride? Have you taken it on the track yet?? Great stuff!
ml1275 Posted October 20, 2008 Report Posted October 20, 2008 Hey Martin - have you got is back together after Cadwell? ML
Martin77 Posted October 20, 2008 Author Report Posted October 20, 2008 It was at the Cadwell two stroke day....some of you may have seen it in this state; it started making crunching noises from the gearbox, so I only manged two sessions on it turned out it was just the flywheel nut had loosened ...so yeah ML, it's all fine and dandy again... Until I siezed it a few weeks later...too lean a needle setting , but a new piston and it's perfect again , surviving a trackday at Llandow without problem. That was part of the attraction of using a 350 engine, the ease and cheapness of parts/repairs. It handles like an NSR to be honest, weight distrubution's 51% to the front so it's not unbalanced, and the weight's quite high giving a sense of flickability, like you're very close to the centre of gravity. Plus it has much more midrange than a 250 (at least 20hp more at 8k)...straightline performance at Llandow (up to 110ish) was about the same as a modern 600. Put it this way...it's better than I am.
gnarly Posted October 20, 2008 Report Posted October 20, 2008 Sweet NSR handling with more grunt.............perfect
ricey3 Posted October 20, 2008 Report Posted October 20, 2008 top bike that mate, i remeber seeing it at the two stroke trackday, but thionk i was on opposite sessions so didn't get a chance to fullt investigate, nice work
Muschi Posted October 21, 2008 Report Posted October 21, 2008 Here's my NSR-D 350..... fantastic work there.
willbloke Posted October 26, 2008 Report Posted October 26, 2008 Good work Martin. What pipes are they ? Also , what have you done to the engine to get 70 ? That's pretty good for a Valvey !
Martin77 Posted October 26, 2008 Author Report Posted October 26, 2008 Pipes are my own design and construction.... (also see Doug's Mito 350).... foam filters on 32mm RGV carbs NSR MC16 manifolds modified TDR reedblocks with single petal carbon reeds mild port work (transfers raised 1mm, usual flowing etc) head skimmed 0.5mm standard 31K ignition et voila....70hp without the need to rev it excessively. It might make a bit more since the engine rebuild, and some time spent optimising the ignition and jetting could easily see it up to 73+...but that's being greedy....
dougb Posted October 27, 2008 Report Posted October 27, 2008 Hi Martin, do you make pipes to sell? the man's a genius with tuning and pipes.....absolutly transformed my mito....sooo strong now !!!!,what a change from the previous pipes
Martin77 Posted October 27, 2008 Author Report Posted October 27, 2008 Hi Martin, do you make pipes to sell? Sometimes, depends on the bike and wether you can leave it at my place for a week or two Oh....and thanks for the comments Doug...
2Smoke Posted October 27, 2008 Report Posted October 27, 2008 Sometimes, depends on the bike and wether you can leave it at my place for a week or two Oh....and thanks for the comments Doug... Hmm ok well you come highly recommended by a certain teacher with a passion for 3xv's There is a 350ypvs and a tdr250 to be done, although the 350 is miles off. Can leave with you for as long as is needed. See how it goes
Martin77 Posted October 28, 2008 Author Report Posted October 28, 2008 Hmm ok well you come highly recommended by a certain teacher with a passion for 3xv's Ah yes... my Pimp's been busy again
beek Posted October 28, 2008 Report Posted October 28, 2008 Very nice job i remember seeing some pics before the paint ? i think youve done a good job
jammerw Posted October 30, 2008 Report Posted October 30, 2008 only just found this on here martin,,,very nice i see my pipes are in very safe hands,that looks very smart indeed (clever bar whatsit)
Recommended Posts
Archived
This topic is now archived and is closed to further replies.