Archive for October 2011

XS650: 71 Service News   Leave a comment

Service News from 1971. XS1 XS1B XS2.

262 … exhaust pipe obstruction

264 … yamaha sealants

267 … XS1B ignition timing change

272/1 … universal crankshaft installation tool

272/2 … universal crankshaft installation tool

272/3 … universal crankshaft installation tool

275 … XS1 XS1B cylinder sleeve installation

278 … XS2 disc brake lever adjustment

281/1 … XS2 battery cable setup

281/2 … cable routing – tacho, speedo

283/1 … XS2 frame and engine nrs

283/2 … XS2 paint codes

285/1 … XS1 XS1B XS2 primary drive lash

285/2 … XS1 XS1B XS2 primary drive lash


 … will create and upload as pdf …


Posted October 31, 2011 by xscafe in Manual - Service/Parts News

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XS650: 71 Parts News   Leave a comment

Parts News from 1971. Various changes for XS1 XS1B XS2.

309 … replacement cylinder sleeves

313 … piston improvement

315 … part number changes

318/1 … key codes

318/2 … key codes

320/6 … oil pump changes

320/7 …XS1B crankshaft machined for conrod shims

320/8 … XS1B handlebar fittings etc

320/9 … breather

320/10 … XS1 XS1B new throttle cable

320/11 … misc notes

320/12 … XS2 crankcase seal

320/14 … XS1 pilot lamp


 … will create and upload as pdf …

Posted October 31, 2011 by xscafe in Manual - Service/Parts News

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XS650: MikesXS   Leave a comment

MikesXS have never been my friends. Poor product quality control. Marginal materials. But, they were there. Many XSes simply wouldn’t be running without the passion Mike Lalonde brought to his business.

Time doesn’t stop (in a ‘normal’ world). When our universe ceases to exist in the ‘reality’ we experience, time, as we (mis)understand it, wont. We get older. Our priorities change. We move on.

This has happened to MikesXS. Mike had other plans for his life. As it should be. The business was sold. And we, as consumers had high hopes. Of improved quality control. Of better customer service. Of continued access to parts.

And what have we got?

I don’t know about you but I have heard no end of owners grumbling. My order hasn’t been filled. Or only partially filled. Parts on backorder. Mikes are ‘awaiting a large order currently on the docks’. The list of unavailable parts seems to get longer, not shorter.

In the 70’s I was interested in a career in finance. Economics was, and still is , a fascination. What eventually soured me was a takeover (of the company I worked for) by Asset Strippers. They sought private and public companies with market or share values lower than their toal asset value and simply stripped them. Sold the existing stock. Sold the assets. Split what was left into smaller Business Units and laid everyone else off. Fortunes were made by the few. Families and whole communities were destroyed. Real progress! And it hasn’t stopped. Wont, until blood starts to flow. :79:    BildBild

What does this mean for us?

I was taking a quick look at the German forum over the weekend and found this from Rüdiger, owner of the XSShop Kiel in Germany:

Hallo XS Freunde,
die neuen Besitzer von MikesXS in Florida haben leider die Ersatzteillieferungen an mich eingestellt :( , es zeichnete sich schon kurz nach der Übernahme des Geschäftes eine Verschlechterung ab, teilweise bekam ich nur knapp 50% der bestellten Teile geliefert.
Bei Nachfrage in Florida wurde mir mitgeteilt das MikesXS keine Teile mehr von dem Hauptlieferanten aus Taiwan bekommt ( keine Ahnung warum ) und sie somit die Lieferungen an Ihre Vertriebspartner in Japan und Europa einstellen :( :( .
Ich werde nun zusammen mit Heidentuning die benötigten Teile in Eigenregie importieren. :D
Das ein oder andere Ersatzteil wird somit sicherlich kurzfristig ausverkauft sein aber es kommt wieder rein. :D


Basically translated as:

The new owners of mikexs have stopped delivering to me … soon after taking over the service deteriorated and they started only supplying part orders … on enquiry they said that they were not dealing with their taiwanese suppliers anymore and in future would not be supplying their business contacts in japan and europe …

Jerry Heiden and myself are now planning on importing our own supplies (from taiwan??) and expect to be short stocked in the meantime … this will not last

Sounds like some underhanded dealing happening behind the scenes somewhere … ??bills not being paid by the new owners?? … ??setting the scene for massive price hikes?? … ??deliberate minimal shelf stocking?? … ??cashing in on existing stock to pay their own bills?? … cant at all imagine Rüdiger or Jerry not paying their bills-be like shooting themselves in the foot.

Asset Strippers at work here? Locusts? An attempt to cut Jerry and Rüdiger out of the profit chain?

I don’t know. I do however have a distinct sense of déjà vu.


or are all of mikesxs_ awaited containers here

or are all of mikesxs_ awaited containers here


Guess we will have to wait and see.

Happy riding.


Posted October 31, 2011 by xscafe in Forums, General, Manaul - Literature, Motor - Cases, Tools, Uncategorized

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XS650: TX750 Service and Parts News   2 comments

For those of you who have asked for the Bulletins relating to the TX750 twin. Or as a pdf –  TX750 Service-Parts News.

Parts list.

Intersting thread at ADVRider


73 TX750

73 TX750


I like these bikes. Had a chequered history. Responsible for the first major motorcycle recall in Europe. Unfortunately motorcycle specific oils weren’t then available. Yamaha simply got too far ahead of itself. Later TX750’s had enlarged sumps, adjustable balancer chains, oil coolers, different gaskets, modified chain adjusters and many other smaller modifications.

These were ground-breakers:

  • Omni-Phase balancer system.
  • Positive Crankcase Ventilation system with fumes  re-directed to the airfilter box.
  • Lead-free petrol compatible valve seats.
  • Twin rear lights.
  • Light-alloy wheel rims.
  • Twin front disc brake.

2 were made over by Porsche. For the 73 racing season. Ran twice. Bol d’Or 24, Le Mans. Thruxton 500, UK. Neither completed the Bol d’Or. Apparently the Porsche engines vibrated worse than the wifes stand-by. Yamaha prepared engines were quickly mounted. One was dropped in the rain. Cam chain sucked a kumara on the other. Compression and race-cam valve lift.  6th at Thruxton.


Tech Info Memo 20 Jul 1973

Tech Info Memo 20 Jul 1973

Tech Info Memo 20 Jul 1973

Tech Info Memo 20 Jul 1973


  • 300 – Headstock Gusset wiring hole enlargement
  • 302 – Misc. Service Instructions…oil leak, starter chain and sprocket, cam timing, engine lube, crankshaft and conrod inserts, crank oil clearance
  • 304 – Oil tank level
  • 305 – Pump shaft cover seal
  • 353 – tool kit
  • 309 – Oil leak; cam carrier base
  • 313 – loose clutch spring screws
  • 321 – RH footrest/brake pedal installation
  • 327 – Primary Gear noise – backlash
  • 332 – balancer chain noise
  • 334 – upper case blind plug
  • 335 – cam chain tensioner noise
  • 336 – starter clutch noise
  • 337 – irregular clutch engagement
  • 338 – Oil leak: ign points area
  • 345 – Oil leak: lower crankcase studs
  • 346 – crankshaft and rod journal size code location change
  • 365 – parts list addition
  • 370 – replacement crankcase assemblies
  • 381 – valve and valve spring lock design change
  • 390 – crankcase balancer design change
  • 392 – alternator rotor parts list corrections
  • 397 – crankshaft design change
  • 409A – crankcase kit:  noise and oil leak reduction, balancer design change, misc installation instructions

1974: M4….

  • 005 – rear brake cam washer
  • 013 – primary drive – backlash
  • 028 – conrod insert size selection
  • 030 – setup checklist
  • 065 – conrod change

1975: M5…

  • 010 – governer assembly springs



kool model


Intersting thread at ADVRider

TX750 Service-Parts News.

Parts list.

TX750 ad


Posted October 28, 2011 by xscafe in Manual - Service/Parts News, XS Pics

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XS650: Twingle   Leave a comment

The Urban Dictionary describes Twingle as:

  • A contraction of the words Twin and Single. A twin cylinder motor running a close firing order ignition timing that mimics a single cylinder motor to provide better traction. Most commonly used in reference to motorcycle flat track racing. Referred to as a “big bang” motor when used in reference to multi cylinder machines
  • To twingle : such a state of euphoria that your entire body has the feeling of being asleep, but doesn’t hurt. It’s like when your foot falls asleep but covers your entire body from head to toe, and doesn’t hurt when you walk
  • An internal combustion engine in which more than one piston is actuated by a single connecting rod (often “V” or “Y”-shaped)
  • to play with
  • When an individual, usually a young pre-teen girl, decides to “save herself” for Edward Cullen, forgetting he is a fictional character.These individuals are usually found in groups, and can be heard screaming at the mere sight or mention of said fictional character.
  • The slightly painful tingling, itching, arousing feeling felt in the balls when thinking about, watching, or hearing the “dog-in-a-tub” sexual manoeuvre being performed.

Originally these were 2 stroke, pistons travelling together, sharing a common combustion chamber. One cylinder was responsible for intake. The other for exhaust. When more than one exhaust pipe was used, they came from the same cylinder.

From Wikipedia:

  • A twingle is a 4-stroke twin cylinder engine with an altered firing order designed to give power pulses similar to a single cylinder four-stroke engine. It is well known that four-stroke singles “hook up” better than two-strokes in the dirt. This is because four-stroke singles have half as many power strokes per crankshaft revolutions as a two-stroke single. This creates a recovery gap  during which the rear tyre regains traction.                                   Inline twins with a 360° crankpin offset or flat-twins can be easily converted into twingles by firing both of the cylinders at the same time and installing a camshaft or camshafts that operate both cylinders’ valves in parallel. Because many such engines already employ the wasted spark principle, only the camshaft modification is necessary. The Vintage Dirt Track Racing Association (VDTRA) 2010 Rules have banned vintage motorcycles from being setup as a twingle

This became popular in flattrack racing. ‘Big Bang’ engines. Due to the recovery gap. Banned in ’07 (AMA). Harley riders will tell you this was because of the cost of replacing parts. More likely the Harley lobby was concerned about losing it’s advantage.

Twingling is easily done on our XS650s. A matter of replacing the cam. Ignition is already wasted spark.


1 .. twingled cam

twingled cam



2 .. twingle vs standard cam

twingle vs standard cam



The bloke that made this cam had this to say:

  • This is an XS650 cam which I reground for .060″ more lift intake and exhaust, then parted on a lathe, sleeved, and welded back together 180 degrees out of phase.  This cam will make your XS650 fire both cylinders at the same time! …  This cam was from a 1978 XS650, but should be used with an earlier compression release system in which there is an extra lever on the bar that keeps the left side exhaust valve open.  I tried installing pop off compression release valves, and there still wasn’t enough relief!  I recommend this cam for race use only.  The only way I could get the bike started was on a jumper.  It ran like a demon, with double the torque.  The front wheel would come up in first and second on the throttle!  The problem was that I couldn’t stop anywhere because I’d never be able to get the bike restarted without the jumper.  The sleeve in the cam is 4140 tool steel bored through to accommodate a Boyer ignition.  The weld is extremely strong.  The cam looks a little rough because I reground it on a WWII era tool grinder!  Please keep in mind that I have made race winning cams reground on the same grinder!  This concept was never intended for the street…

Posted October 27, 2011 by xscafe in Motor - Cam, Motor - Head

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XS650: The Greensand Foundry   Leave a comment



1 .. the greensand logo

the greensand logo


A while ago I picked some rather tasty finned covers up from The Greensand Foundry. Look good on the XS.

They’ve been busy lately. Alongside single carb manifolds they’ve extended their catalogue.


2 .. more on offer

more on offer



3 .. iron cross generator cover

iron cross generator cover



4 .. iron cross points ... celtic pentagram generator cover

iron cross points … celtic pentagram generator cover



5 .. celtic pentagram generator cover

celtic pentagram generator cover



6 .. pentagram cover

pentagram cover




7 .. pentagram generator and finned points

pentagram generator and finned points



8 .. generator cover

generator cover




9 .. 13 generator cover

13 generator cover



10 .. yamaha tuning forks

yamaha tuning forks



11 .. and for the points cover too

and for the points cover too



12 .. super sport points and finned clutch covers

super sport points and finned clutch covers



13 .. super sport points covers

super sport points covers



14 .. XS points and finned clutch-oil

XS points and finned clutch-oil



15 .. XS points covers

XS points covers


email at:

fleabay at: hardtail28-2008

These are cast. In his small workshop. A one man band.



16 .. Furnace




17 .. getting ready

getting ready



18 .. Casting




19 .. Moulds




20 .. Workshop





21 .. backyard industry ... literally ... space is tight

backyard industry … literally … space is tight




22 .. single carb manifold

single carb manifold



23 .. amal mounted

amal mounted



24 .. twingled cam

in frame … here with no air filter … am sure I have a pic with filter-cant find it


Contact details:

email at:

fleabay at: hardtail28-2008

  • click on: ‘Angebotene artikel’ or ‘Items for sale’ … found in the profile box where the seller can post his photo if desired.

XS650: Haka   Leave a comment

Tomorrow, Sunday Oct 23,  is the 2011 Rugby World Cup Final. My country has played through. To face their nemesis. France. A ‘grudge match’.

For my French friends … ‘Vive les Bleus’

The Haka. A Celebration. A Challenge. A Greeting. The Battle to come.

Just don’t attempt to perform one in Utah. The pigmen will pepper-spray and baton you.

One of my favourites –

although the 2011 semifinal haka against Australia came close.

Here, NZ Maori aggressively faced down by Tonga. Go Ikale Tahi.

In 2007 a mate flew out from home. We took my bikes (XS650, SR500) on a World Cup joy ride through France. Rugby town to rugby town. Happily ‘Pannenfrei’.

Caught the Haka in Marseille. Beautiful sunny day. Lyon. Toulouse. Enjoyed many other pool games – two of the most memorable being Tonga almost taking out South Africa, Lens. And England, Paris.

This year I have enjoyed the competition from the comfort of my local Irish Pub. Thanxs team for going out of your way to open at 07.00 for many of the games.

All Blacks 8: Les Bleus 7

There were no losers in this game. The All Blacks claimed the cup. Les Bleus proved to the world and themselves what the All Blacks have known for years. Don’t underestimate them. And I got to watch wonderful rugby with a pub full of french supporters. Nailbiting to the end. Man of the Match, Thierry Dusautoir.

It will be interesting to observe what the next few years bring. Henry, Deans, Gatland, de Villiers, Lievremont among others may all be looking for new jobs.


Posted October 22, 2011 by xscafe in Uncategorized

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