Question about 1972 Ossa E-71

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Help! I'm rebuilding a pair of OSSA MAR wheels and dont know what measurement is required between the hub face and the rim in order for the wheels to be true and aligned when reinstalled on the bike!

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Did they not have spacers when you took them offf the bike?

Posted on Mar 05, 2009

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Pulsar 150 front tire issue


I'd thy putting the bike on a jack or the center support (if equipped) and prop it so the front tire is in the air.
Rotate the wheel to see if the rim is bent.
Measure the distance between the rim and the fork tube on each side. They should be the same.
Reply as a comment to this post to let me know what you find.
Cheers

May 02, 2016 | Motorcycles

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I have aclicking or creaking sound fron rear wheel suzuki m109


DONT RIDE IT!!!!! check or have your spokes checked on the back wheel for tightness and bends, also have the rim and hub checked for hairline cracks or dents, but whatever you do, dont ride it until all these checks have been carried out, the last thing you want is to get halfway through your journey and the back wheel falls off! also get the front on einspected while the back ones being done

Jul 24, 2012 | 2011 Suzuki Boulevard M109R

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I just god a new tire, tube, rim and spokes. Except i dont know how to install the spokes! How do i install spokes through the holes and to the rim? What is the correct order to put them in? What direction...


Thank you for the inquiry.
This is one of those projects in life that best requires special tools (Spoke Jig) and a lot of patience. I also recommend a couple of good quality spoke wrenches. The one that comes with your tool kit usually is for general emergency spoke tightening and minimal maintenance. Even at the shops there is not to many people that know how to do this well. It's time consuming and shop labor is expensive.
That being said here goes:
To get started you will need to know a couple of things:
  1. Spoke lacing pattern
  2. Rear sprocket/hub alignment position. (Chain must run true from front primary sprocket) this applies only if this is a rear wheel.
I've posted a link to some helpful pictures of wheel lacing on various bikes to give you a few tips and pointers. http://www.rcycle.com/wheellacing.html
Look at the spoke pattern on your other wheel to determine the direction to push the spokes through and determine the spacing pattern for the short or long spokes.
1) Lay the hub flat on a bench and install the spokes loosely in correct pattern. 2) Lay the rim over the spokes and push them through. Spoke direction corresponds to the receiving angle on the rim. Important to get started correctly than alternate. 3) Thumb tighten a couple of the nuts/ferrels loosely to hold rim in position. 4) Tighten nuts according to get the hub centered as best as possible (just to temporarily hold) 5) You can build a fixture with a couple of 2 x 4s as shown in the illustration or carefully clamp the bikes axel in a vice, not to damage the threads or pinch the axel nut.Horizontal position. 6) You will need to clamp a coat hanger or a heavy piece of wire to something solidly fixed to act as a reference guide. 7) Tighten spokes first for correct up/down centering then for left/right centering. 8) UP and Down: Position your gauge wire close to the top/front of the rim and rotate. Finger tighten and loosen the spoke nuts until you get the wheel running true for up/down motion. Keep going around and redoing until you get it as perfect as you can finger tight only. 9) Move you wire gauge to the side of the rim and repeat process. The front rim has a disc brake position to align for (not to critical) and the rear rim has a critical sprocket position to maintain. You will have to measure the sprocket offset to get it correct. Chain must run true. 10) Spin the rim on the axel for reference and Keep going around and tightening and loosening the spokes until you get the side alignment running true. May take a while and many spins. 11) Once you get the rim running true for both wobble and run out you are ready to slowly start tightening the spoke nuts with your spoke wrench's. Take you time and keep tightening in tiny amounts until you get tight and true. Tap the spokes as you go and listen for tension. 12) When you tap if you get a dull thunk - it's a little loose. If you get a ringing musical string sound you know you are tight and/or close depending on the amount of ring. Take your time.
Before you mount the tire be sure you mount the rim on the bike and run the axel in place to final check for front brake rotor alignment or real sprocket alignment. You may have to adjust.
I have always wrapped duct tape in the V-slot to hold the nuts and prevent spokes from coming up and puncturing the tube. Go around several times. Just maintain the groove so you can still have room to place the tire bead in to stretch for mounting.
Best wishes and good luck from a fellow biker/racer.
TF

Jun 03, 2011 | 2002 Yamaha TT-R 125

1 Answer

Rebuilding an ossa 250 pioneer. How does the "tickler" on the carberator work?


Wow! Old technology here.
Depending on what make carb is fitted, the "Tickler" is a lever that pushes the float down into the float chamber allowing the carburettor to "flood". This is instead of a "choke".
I hope that answers your question and ride safe when you get her going.

Nov 08, 2010 | 1972 Ossa E-71

2 Answers

I am rebuilding a rear wheel on my son's yamaha 50cc ttr. I have completed the hub spoke and rim assembly and now need to install the bearings. Can they be hammered into place or do they need to be pressed...


it is always best to press them in . set the bearing on the hub place a piece of flat steel on top of it and a piece on the bottom of the hub use a c clamp to press it in . make sure it is going in straight!!!!!

Jul 07, 2010 | Motorcycles

1 Answer

Rear wheel alignment


When adjusting the rear wheel, pay close attention to the adjusters. They should be pretty close to the same on either side. If one adjuster is adjusted considerably different from the other, I'd suspect the wheel is not properly aligned within the swingarm. If you can get to a place where the swingarm is shaped the same on both sides, you can measure from the inner face of the swingarm to the tire on each side. A tool is made to precisely align the rear wheel with the front wheel but you must know the amount of "offset" in the front end if there is any. This requires a service manual. So, the "average" way is the method I've described above. Rear axle torque 60 foot pounds.

Jun 12, 2010 | 2000 Harley Davidson FLHR-FLHRI Road king

1 Answer

Where can I find workshop manual for Ossa road models only


You can buy one here:
http://www.bultaco.com/Manuals.htm

Jan 08, 2010 | 1972 Ossa E-71

1 Answer

Motorcycle wheel rebuilding


If you can't find anyone in Australia try contacting Woody's Wheel Works, perhaps they know of someone in your part of the world or can do the job.

May 02, 2009 | Triumph Bonneville Motorcycles

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