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Thread: My R-SXV 550 project..

  1. #76
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    Amazing work Mathias!
    This is Passion!

  2. #77
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    Thank you Viperfiber!

    tiny update..

    I did the spacer tube today and got some new wheel bearings .. Thereīs more material to remove on the spacer tube, as it is still quite heavy..



    I also machined the other side of the rear wheel to move the rear disc closer to the center of the wheel. By doing this, I can use the same brake caliper plate as I have used on my RS250 project with the BST wheels!
    Problem is that the M8 threads in the hub is only 11 mm long by now, this is not good as it is aluminium threads.. I will be looking at some inserts to put in then, maybe go down to M5/M6 screws instead.



    The exhaust system will (hopefully) be finished tomorrow!

    - Mathias
    Last edited by Mathias; 08-20-2011 at 11:30 AM. Reason: spelling.. again..

  3. #78
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    Finished the exhaust system.. My brother welded the "eyes" that holds the spring and some 8mm washers to use as support joints..













    I also removed some weight from the rear wheel spacer..



    - Mathias

  4. #79
    apriliaforum Member Anchefonk's Avatar
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    Outstanding...... You are the Chief!


  5. #80
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    Thank you very much

    btw. the wheel spacer went from 162 grams to 81 grams.. thereīs weight to be removed everywhere on a bike!!

    - Mathias

  6. #81
    apriliaforum Junkie
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    What by chance is your line of work? Your machining and engineering on this project is amazing to say the least.

  7. #82
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    Quote Originally Posted by Marcusredmonkey View Post
    What by chance is your line of work? Your machining and engineering on this project is amazing to say the least.
    Thank you.. Iīm a machinist in the aerospace industry..

  8. #83
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    Top and bottom yoke

    Been working on some fork yokes today.. not sure it will be the final result.. I seems like the bottom yoke is very heavy.. partly because I have designed it to have 75 mmīs of fork leg clamping area .. to make the front end stiffer..

    These yokes will take the RSV1000 Öhlins forks

    Center to center of fork legs - 205 mm
    Legs offset from steering stem - 35 mm
    Height of top yoke - 20 mm
    Hole size in top yoke - 51 mm
    Height of bottom yoke - 75 mm
    Hole size in bottom yoke 56 mm
    top yoke weight - 309 grams
    bottom yoke weight - 1016 grams
    Top yoke - 1x M8 bolt in each side
    bottom yoke - 5x M6 bolts in each side for optimal grip on the fork legs

    I will do the steering stem in aluminium as well.. I think I might be able to remove enough weight there, to compensate for the extra weight added to the bottom yoke.





    Closed flat surface on top, easier to clean.. Pockets facing downwards.






    You might have noticed that I have designed the top yoke without the ignition lock. Actually I wanted the ignition lock, but itīs so damn heavy and the yoke is easier to machine when itīs not there.. Also I can machine it from a thinner piece of raw material without the mounts for the ignition lock.
    I will have to place a key or a button somewhere else on the bike.. AND I AM NOT TELLING WHERE!



    - Mathias

  9. #84
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    Quote Originally Posted by Mathias View Post
    I will have to place a key or a button somewhere else on the bike.. AND I AM NOT TELLING WHERE!
    Same as my RGV... RFID widget goes in the glove, little receiver box (about $50 from dealextreme.com or wherever) goes on rear subframe, swipe to turn it on.

  10. #85
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    Looking good.
    What about steering lock stops on the bottom yoke?

  11. #86
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    Quote Originally Posted by monkeyfumi View Post
    Looking good.
    What about steering lock stops on the bottom yoke?
    I will put holes in the yoke when I know where they sit.. didnīt have the measurements when I was drawing this is something I can do afterwards

    - Mathias

  12. #87
    apriliaforum expert DanRS500's Avatar
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    Quote Originally Posted by Mathias View Post
    Been working on some fork yokes today.. not sure it will be the final result.. I seems like the bottom yoke is very heavy.. partly because I have designed it to have 75 mmīs of fork leg clamping area .. to make the front end stiffer..

    These yokes will take the RSV1000 Öhlins forks

    Center to center of fork legs - 205 mm
    Legs offset from steering stem - 35 mm
    Height of top yoke - 20 mm
    Hole size in top yoke - 51 mm
    Height of bottom yoke - 75 mm
    Hole size in bottom yoke 56 mm
    top yoke weight - 309 grams
    bottom yoke weight - 1016 grams
    Top yoke - 1x M8 bolt in each side
    bottom yoke - 5x M6 bolts in each side for optimal grip on the fork legs

    I will do the steering stem in aluminium as well.. I think I might be able to remove enough weight there, to compensate for the extra weight added to the bottom yoke.





    Closed flat surface on top, easier to clean.. Pockets facing downwards.






    You might have noticed that I have designed the top yoke without the ignition lock. Actually I wanted the ignition lock, but itīs so damn heavy and the yoke is easier to machine when itīs not there.. Also I can machine it from a thinner piece of raw material without the mounts for the ignition lock.
    I will have to place a key or a button somewhere else on the bike.. AND I AM NOT TELLING WHERE!



    - Mathias
    Here are a couple of pics of my new lower, with Alloy stem. This fatter lower with alloy stem and custom top weighs in at almost .5kg lighter than stock...Name:  DSCN0713.JPG
Views: 2379
Size:  132.6 KB

    Name:  DSCN0723.JPG
Views: 2357
Size:  156.4 KB
    I've got a fever and the only prescription is, "More cow bell"

    Warming the world 2 strokes at a time.

  13. #88
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    Looking good Dan.. What is the height of your lower yoke? .. and what is the weight of it?

    - Mathias

  14. #89
    apriliaforum expert DanRS500's Avatar
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    Don't know exact figures mate, once it is in my hands I'll let you know...
    I've got a fever and the only prescription is, "More cow bell"

    Warming the world 2 strokes at a time.

  15. #90
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    okay.. so far it looks like I have removed over 500 grams just on the top yoke and the steering stem .. I havenīt weighed the std. bottom yoke yet, so I donīt know about that..

    - Mathias

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