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Thread: Fruitbats Baja Machine Shop

  1. #41
    Baja-Forum Maniac Kinger's Avatar
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    Quote Originally Posted by rs fruitbat View Post
    ok mate
    :d .

  2. #42
    Adminicastrator Hiks's Avatar
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    Really nice work there, I'm liking them a lot.

    How much are they? I would like a set of them.

    Quote Originally Posted by rs fruitbat View Post
    I could but I'd need the shock and spring because the spring is bigger than standard and the shock shaft is 8mm iirc
    Send me your address, I will send them to you.

    Quote Originally Posted by Kinger View Post
    ?? It's leeroy
    It is indeed Leeroy, hows it hanging?

  3. #43
    Advertiser rs fruitbat's Avatar
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    Quote Originally Posted by Hiks View Post
    Really nice work there, I'm liking them a lot.

    How much are they? I would like a set of them.



    Send me your address, I will send them to you.



    It is indeed Leeroy, hows it hanging?

    Thanks Terry ,I'll pm you my address ,as for the price I think 16 a pair is very reasonable

    Flywheel lightening service, manufacturer of ,baja cage risers,piston stops ,H/D spring perches for Standard shocks and IRC shocks ,rear cuffs ,spiked wheel nuts for the baja and losi 5ive ,general machining offered for all your baja needs pm for details

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  4. #44
    Adminicastrator Hiks's Avatar
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    Sounds good, I'll PM you now

  5. #45
    Advertiser rs fruitbat's Avatar
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    I've been thinking about lightening and venting clutch bells for a while now , the lightening work will help the engine pick up revs easier and the venting will help the clutch run at a lower temp

    Here's some pics, excuse the fingers







    A standard ( vented ) clutch bell.




    Turtle racing ( vented ) clutch bell




    As you can see the standard clutch bell has 8 vents and the turtle one has 6 ,I was just experimenting with the number of vents I could put into the clutch bells ,I'd say 8 is the maximum amount that aids cooling and reduces weight without weakening the structure ,but both significantly reduce core temperatures .

    Thanks Kev
    Last edited by rs fruitbat; 28-04-2013 at 22:52.

    Flywheel lightening service, manufacturer of ,baja cage risers,piston stops ,H/D spring perches for Standard shocks and IRC shocks ,rear cuffs ,spiked wheel nuts for the baja and losi 5ive ,general machining offered for all your baja needs pm for details

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  6. #46
    Baja-Forum Maniac bajabilly's Avatar
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    nice job there, i would do the 6 slots and you could also drill a 6mm or so dia hole in between the slots as well without weakening it any more, just a thought
    Last edited by bajabilly; 06-05-2013 at 09:38.

  7. #47
    Advertiser rs fruitbat's Avatar
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    6mm maybe a bit to big ,but I can get a 3mm hole in between the slots no problem

    Flywheel lightening service, manufacturer of ,baja cage risers,piston stops ,H/D spring perches for Standard shocks and IRC shocks ,rear cuffs ,spiked wheel nuts for the baja and losi 5ive ,general machining offered for all your baja needs pm for details

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  8. #48
    Member Spadge's Avatar
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    Quote Originally Posted by rs fruitbat View Post
    Here's a small vid of me skimming a flywheel ,click the link below


    http://i99.photobucket.com/albums/l3...h/0cd88e9c.mp4
    Wee bit quick on the RPM mate even for alu, always best to start slower then increase if you can, there are proper charts for calculating the surface speed of different materials using different tools (Carbide,HSS) then you just calculate pi(D) to find the speed at the outer circumference (you can speed up as you go across the face and the circumference shrinks but I personally wouldn't bother [though I have programmed this on CNC]). Using a HSS tool on alu of the same diamater as the flywheel you should be looking at 100-150rpm max, I'd edge on the slower side of this as you're machining an intermittent surface which puts more force on the machine/tool/material than machining around a solid cylinder. If you want a good surface finish slower is always best, unless you have decent carbide tipped tools.
    Absolute Power Corrupts Absolutely.
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  9. #49
    Advertiser rs fruitbat's Avatar
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    Quote Originally Posted by Spadge View Post
    Wee bit quick on the RPM mate even for alu, always best to start slower then increase if you can, there are proper charts for calculating the surface speed of different materials using different tools (Carbide,HSS) then you just calculate pi(D) to find the speed at the outer circumference (you can speed up as you go across the face and the circumference shrinks but I personally wouldn't bother [though I have programmed this on CNC]). Using a HSS tool on alu of the same diamater as the flywheel you should be looking at 100-150rpm max, I'd edge on the slower side of this as you're machining an intermittent surface which puts more force on the machine/tool/material than machining around a solid cylinder. If you want a good surface finish slower is always best, unless you have decent carbide tipped tools.


    Thanks for the advice I don't own that lathe anymore ,but it was handy as it had a variable speed spindle which I could adjust as I was cutting , I'm fully aware of the calculations regarding feed rate ,spindle speed and of course taking the material to be machined into the equation.

    I found that a higher spindle speed and a hss ground tool worked best on these cast flywheels, a carbide tool was also good depending on the tool rake ,but my preference was hss,also the intermittent cutting was greatly improved at a higher rpm ,I skim large tractor flywheels in work and the rpm is set from anything from 45rpm too 80rpm and we use carbide tipped tools due to them giving a better finish but not only that the hard spots in the flywheel can cause issues.

    I do have carbide tipped tools here at home but the forces incurred due to a fast feed rate and spindle speed are a little to aggressive for such a small lathe ,but as I touched on early I now have a larger machine which gives me better scope with feed rates and tooling ect .

    All my baja machining is carried out at home ,but by day I'm a manual machinist tool maker,old Skool , but I have done a small amount of cnc work when in my previous employment

    Flywheel lightening service, manufacturer of ,baja cage risers,piston stops ,H/D spring perches for Standard shocks and IRC shocks ,rear cuffs ,spiked wheel nuts for the baja and losi 5ive ,general machining offered for all your baja needs pm for details

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  10. #50
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    Default Xxxxl spring perches

    I was contacted by a member to makes some spring perches after he viewed my thread here

    http://www.baja-forum.co.uk/showthre...for-IRC-shocks

    The only thing was he wanted his perches even bigger

    So I made some limited edition xxxxl spring perches these were made to the diamentions given



    I should've put a 5p piece in the pic to give you an idea of scale

    Flywheel lightening service, manufacturer of ,baja cage risers,piston stops ,H/D spring perches for Standard shocks and IRC shocks ,rear cuffs ,spiked wheel nuts for the baja and losi 5ive ,general machining offered for all your baja needs pm for details

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  11. #51
    Advertiser rs fruitbat's Avatar
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    Not baja related , but I needed a new handle for one of my machines ,so today I made a new one





















    The cut outs on the outside diameter are not only for grip ,but each divisional cut out gives me .010 thou of movement on the machine ,so for each full revolution I have .120 thou of movement ,or the metric equivalent of 0.254mm per each division and one full revolution equals 3.0480mm

    Flywheel lightening service, manufacturer of ,baja cage risers,piston stops ,H/D spring perches for Standard shocks and IRC shocks ,rear cuffs ,spiked wheel nuts for the baja and losi 5ive ,general machining offered for all your baja needs pm for details

    http://www.baja-forum.co.uk/forumdis...Fruitbat-Parts

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  12. #52
    Senior Member bugs-gti's Avatar
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    Yeah like that makes sense lmfao looks good thou

  13. #53
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    Quote Originally Posted by rs fruitbat View Post
    Not baja related , but I needed a new handle for one of my machines ,so today I made a new one





















    The cut outs on the outside diameter are not only for grip ,but each divisional cut out gives me .010 thou of movement on the machine ,so for each full revolution I have .120 thou of movement ,or the metric equivalent of 0.254mm per each division and one full revolution equals 3.0480mm
    Nice knob
    Good work fella

  14. #54
    Advertiser rs fruitbat's Avatar
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    Quote Originally Posted by Kinger View Post
    Nice knob
    Good work fella
    Quote Originally Posted by bugs-gti View Post
    Yeah like that makes sense lmfao looks good thou
    Thanks

    Flywheel lightening service, manufacturer of ,baja cage risers,piston stops ,H/D spring perches for Standard shocks and IRC shocks ,rear cuffs ,spiked wheel nuts for the baja and losi 5ive ,general machining offered for all your baja needs pm for details

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  15. #55
    Baja-Forum Maniac Corbs10's Avatar
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    Quote Originally Posted by rs fruitbat View Post
    I was contacted by a member to makes some spring perches after he viewed my thread here

    http://www.baja-forum.co.uk/showthre...for-IRC-shocks

    The only thing was he wanted his perches even bigger

    So I made some limited edition xxxxl spring perches these were made to the diamentions given



    I should've put a 5p piece in the pic to give you an idea of scale






    thnx again mate

  16. #56
    Advertiser rs fruitbat's Avatar
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    No worries mate, I was more than happy to help

    Flywheel lightening service, manufacturer of ,baja cage risers,piston stops ,H/D spring perches for Standard shocks and IRC shocks ,rear cuffs ,spiked wheel nuts for the baja and losi 5ive ,general machining offered for all your baja needs pm for details

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  17. #57
    Advertiser rs fruitbat's Avatar
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    Another day another Fruitbat mod , my rear shock ball ends were looking a bit worse for wear ,so I made myself a pair in 6082 aluminium

    They're basically made to the original manufactures spec otherwise they wouldn't fit inside the shock

    Here's some pics ,excuse the quality they were taken with my phone .








    Ball and O ring fitted







    And fitted to my baja







    Thanks for looking

    Flywheel lightening service, manufacturer of ,baja cage risers,piston stops ,H/D spring perches for Standard shocks and IRC shocks ,rear cuffs ,spiked wheel nuts for the baja and losi 5ive ,general machining offered for all your baja needs pm for details

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  18. #58
    Baja-Forum Maniac Kinger's Avatar
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    Looks good mate, nicely done.

    Isn't the hollow part in the bottom of the plastic one there for a reason? Isn't that where the nut on the end of the shaft goes when fully compressed?

  19. #59
    Advertiser rs fruitbat's Avatar
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    Quote Originally Posted by Kinger View Post
    Looks good mate, nicely done.

    Isn't the hollow part in the bottom of the plastic one there for a reason? Isn't that where the nut on the end of the shaft goes when fully compressed?
    Thanks mate,mmmm you've got me thinking there ,I've just been out too check the compression of the shock and on the car they look to compress fully ,I'll take the shock off the baja tomorrow and check the compression with the spring removed ,it's not a problem If I need too machine a recess for the nut

    Flywheel lightening service, manufacturer of ,baja cage risers,piston stops ,H/D spring perches for Standard shocks and IRC shocks ,rear cuffs ,spiked wheel nuts for the baja and losi 5ive ,general machining offered for all your baja needs pm for details

    http://www.baja-forum.co.uk/forumdis...Fruitbat-Parts

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  20. #60
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    Quote Originally Posted by rs fruitbat View Post
    Thanks mate,mmmm you've got me thinking there ,I've just been out too check the compression of the shock and on the car they look to compress fully ,I'll take the shock off the baja tomorrow and check the compression with the spring removed ,it's not a problem If I need too machine a recess for the nut
    If needed its only a case of drilling a hole
    Just didn't want yah breaking something dude.
    I may well have a pair for my front shocks, I've got rezzies on the rear but these on the front would be sweet

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