OzVMX Forum
Marque Remarks => Yamaha => Topic started by: firko on January 08, 2009, 04:27:38 pm
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Here's a neat little bit of kit for anybody building a trick MX250/360/sc500. If it fitted the early engine I'de be bidding on it. Cheap right now but I bet it takes off as bidding closes.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=330298080782&ssPageName=ADME:B:EF:MOTORS:1123 (http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=330298080782&ssPageName=ADME:B:EF:MOTORS:1123)
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slapped a couple of bids in.....getting pricey but what price true love eh..... bit worried about magnesium corrosion, I have a rather unattractive collection of RM clutch covers that look like swiss cheese.
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(http://i245.photobucket.com/albums/gg71/marcFX_photo/MARCBIKE005.jpg)
just fitting some bushes to the tricky back end now
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(http://i245.photobucket.com/albums/gg71/marcFX_photo/MARCBIKE005.jpg)
just fitting some bushes to the tricky back end now
Now that is trick 8), what swingarm is that?
I thought the 250 and 360/500 clutch covers were slightly different. ???
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swingarm is PDI, gives a range of shock positions that covers everything from hill climbs to observed trials. ;D
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I think the MX 250 is really under rated, Yamaha build quality, spares on every street corner, its usable and then some. The YZ 250 A for sure is #1, but for the $500 the MX250 cost me I am looking forward to seriously using it.
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I think the MX 250 is really under rated, Yamaha build quality, spares on every street corner, its usable and then some. The YZ 250 A for sure is #1, but for the $500 the MX250 cost me I am looking forward to seriously using it.
Its a great underrated motor, the rest I'm not so sure about. I'm sure a little thought and some engineering would have it up with the YZ. That lightweight swinger with a lighter wheel, some quality shocks, some suspenion work at the front and away ya go ;) :).
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Do you have any other trick stuff to add to your MX?
I'm making do with a webco head, pvl ignition and a circle-f pipe ;D ;D ;D
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Do you have any other trick stuff to add to your MX?
I'm making do with a webco head, pvl ignition and a circle-f pipe ;D ;D ;D
well it was supposed to be a budget racer, OK I admit it I have mint yz A tank with straps and YZ C forks. ;D
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Is the PDI swinger 'period' ?
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yep PDI supposedly made it to fit a TM250, the story goes that a US dealer hotted up some TM250s with alloy swingarms and RH motors. I have a later PDI swinger for my 75 KX 250 and it is quite different. For some reason they dropped the adjustable shock position, pity I think they were on to something there. ;)
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Youch a bit more than I need to spend right now.
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grahame you are correct mx250 clutch side covers do not fit mx360 or sc500 as there is no hrmonic balancer on the 250.builge top of c/case behind clutch,
cheers
jim
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yes PDI is period 70's brand
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yeah I also have Trickit fork kit for the front. Bike came with all the dealer stickers from California when it was sold still stuck to it, been lying about half rebuilt in Tokyo for years.
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Speaking of swingarms, I've recently been communicating offline with new forum member Peter Villacaro from Florida. He's kindly put me in contact with Walt Boyd, the original constructor of the Boyd and stellings frame and swingarms. Peter informed me that Walts son still has the moulds and tooling for the original Boyd and Stellings swingarms and that he (Peter) has mentioned to him that it may be a good idea to perhaps reissue some of the more popular swingarms. I reckon there'd be a ready market for quality period correct swingarms like the B&S and PDI. What do you guys think?
As well as the Boyd and Stellings Suzuki project, I also have a Boyd and Stellings swingarm on my Maico and think they're a quality product. Ken Smith had one on his former CZ as well and shares my opinion.
(http://img.villagephotos.com/p/2005-8/1062154/bsswing.jpg)
(http://img.villagephotos.com/p/2005-8/1062154/bsswing2.jpg)
(http://img.villagephotos.com/p/2005-8/1062154/boydandstellingshus4.jpg)
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cool, I have 3 or 4 various PDI ones and they are all the same sort of cast up arms....better than the flimsy arrangement that came stock.
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Here's a release from 1969 announcing the new B&S swingarm. I think PDI swingarms are the same as B&S, made by the newer owners. I've also seen AMP swingarms that are pretty much the same.
(http://img.villagephotos.com/p/2005-8/1062154/bssw.jpg)
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yeah I think I have 3 generations of them, my MX250 arm is gen 1, the one with fixed shock position on my 75 KX seems to be Gen 2 and finally the cantilever behemoth that fits RM A/B seems to be the last.
I am sure it makes more sense to use castings but they not as pretty as my WB, GMC or Foxy one. Fab'd arms with plenty of good welding are the only thing that really satisfies a swing arm fetish. ;D
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I remember a recent post, when we started talking about afrermarket swingarms for vmx. Seem to remember my idea of fitting an ovation swingarm was shot down because it would never meet MA rules. Still, I guess this is a trickery subject, under marque. :) I am liking this thread.
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If the performance parts are period then the MA can kiss my ass. Thanks for the paperwork on the BS swingarm Firko, really interesting that they were available in 69. Story goes that some factory Suzukis ran alloy arms albeit painted black.
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The MX250A is one of those bulletproof bikes that you can get a lot of after market parts for. But you should try buying a Yamaha NOS rear 51 tooth sprocket, got quoted $393.00 today from the "stealer"
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The MX250A is one of those bulletproof bikes that you can get a lot of after market parts for. But you should try buying a Yamaha NOS rear 51 tooth sprocket, got quoted $393.00 today from the "stealer"
:o :o :o :o :o :o :o:o :o :o :o :o :o :o:o :o :o :o :o :o :o
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understand the response Graeme, should of heard what I said!!!! All I did was quote the part number,what a joke, so now looking for an after market sprocket.
Barry