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4Instructables85,716Views193Commentscentral Florida
Working on motorcycle since age 11 Instructor at MMI from 2000 until mid 2011. Started in a Honda/Yamaha/(old) Triumph twin dealers, moved to Suzuki/BMW/Vespa dealers in 1980

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  • crazypj commented on Kandrix's instructable Wooden Fidget Hand Spinner under $12 weeks ago
    Wooden Fidget Hand Spinner under $1

    I just checked eBay (it's where I get a lot of cheap stuff)Cheapest full ceramic 608 bearing is $6.99. Hybrid ceramic bearings are cheaper but it kinda defeats the purpose of having a bearing that can run 'dry' at high rpm. If I was making them to sell at the ridiculous prices I see I would use full ceramic though

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  • crazypj commented on Applied Electronics's instructable AC-DC Peak Voltage3 weeks ago
    AC-DC Peak Voltage

    It's quite old Instructable but very useful. for anyone working on motorcycle (or even watercraft, car mechanics, industrial engines, etc)I like the way you did this Instructable. I've seen circuit diagrams for PVA (Peak Voltage Adapter)which are much simpler but I've seen them fail relatively quickly (even Snap-On PVA which plugs into a 'Snap -On/Bluepoint' multi meter - a re badged Fluke) A lot of motorcycles use reverse EMF from ignition coil to monitor various things, fuel quantity being one 'rough guess' for injector system. Higher voltage is required for lean mixtures and the opposite for rich mixtures,the reverse EMF from ignition coil changing to match. Reverse EMF induces up to 350v in primary circuit

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  • crazypj commented on Kandrix's instructable Wooden Fidget Hand Spinner under $13 weeks ago
    Wooden Fidget Hand Spinner under $1

    I looked at full ceramic bearings but they were more than 'just a bit more expensive' at about $17.00(US). The cheap 10 pack are pretty horrid though

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  • crazypj made the instructable Wooden Fidget Hand Spinner under $13 weeks ago
    Wooden Fidget Hand Spinner under $1

    I made a different style for my grandson (he's only 15months) Used scrap I've had laying around for years. Because of his age I made a 'handle' out of a piece of branch neighbors had cut down. Used an old fan from Suzuki 80cc ATV as spinner with almost everything machined off to give it some texture and interest. 10mm stainless steel Allen bolt plus a wingnut to give him something else to fidget with. I should have paid more attention while polishing, even after removing almost all the fan blade plus rounding off, spinning at 10,000rpm (or more?) I managed to damage myself (tore out a piece of fingernail- see pic) Kept him occupied at least 5 minutes while coming home from daycare yesterday (usually toys only keep him occupied about 30 seconds) I think it's a 'win'

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  • 5 Times The Trash to a Single Treasure Knife (54TASTK)

    Is it even possible to heat treat a brake disc? (other than softening it) I know they are tough but usually not the best grade of stainless steel and I don't think they are hardenable? (sp?) All stainless steels work harden do varying degrees, brakes rarely crack from being too hard after heating the only times I've seen cracks are on 'thin' (worn out) discs and that was after thermal shock (usually distorted real bad as well)

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  • How to Sharpen Used and Dull Drill Bits (By Hand!!)

    A sharp 60 degree drill is way better than a blunt 118 degree drill bit (that would be a 59 degree angle) I was taught to use a pair of hex nuts as a check as it will automatically give a 120 angle

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  • crazypj commented on danthemakerman's instructable Marking Knife from Saw Blade1 month ago
    Marking Knife from Saw Blade

    Strange, the ones I've changed behave more like a high carbon spring steel? I’ve hit various things including 'tree' stumps about 5"~6" diameter and bent blades, they cannot be straightened 'cold' which I know mild steel will. I tried welding high speed tool steel edges (lathe parting off blades) but the main part of the blade got too brittle and they broke off (I would expect the weld or HSS 'edge' to fail first if blade is 'mild steel?) I now know I should have normalised blades after welding but didn't think it would be necessary at the time. (HSS isn't affected by 'red heat') I'm not an engineer, I trained as a precision machinist so have some idea of different material properties. I very much doubt they are in the 4340 range but they are a 'high carbon' even if t...see more »Strange, the ones I've changed behave more like a high carbon spring steel? I’ve hit various things including 'tree' stumps about 5"~6" diameter and bent blades, they cannot be straightened 'cold' which I know mild steel will. I tried welding high speed tool steel edges (lathe parting off blades) but the main part of the blade got too brittle and they broke off (I would expect the weld or HSS 'edge' to fail first if blade is 'mild steel?) I now know I should have normalised blades after welding but didn't think it would be necessary at the time. (HSS isn't affected by 'red heat') I'm not an engineer, I trained as a precision machinist so have some idea of different material properties. I very much doubt they are in the 4340 range but they are a 'high carbon' even if the 'lower end' of 'high carbon' range. BTW, these are for a ride on lawn tractor/42" mower not a walk behind mower, don't know if that makes a difference?

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  • crazypj commented on danthemakerman's instructable Marking Knife from Saw Blade2 months ago
    Marking Knife from Saw Blade

    I saw a comment that mower blades are mild steel? Every time I've changed mower blade they have always been 'heat treated carbon steel' Even the cheapest ones I could get were still carbon steel (although the heat treatment may not be so good on real cheap ones?) I'm pretty sure the comment is wrong?

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  • crazypj commented on danthemakerman's instructable Marking Knife From Saw Blade2 months ago
    Marking Knife From Saw Blade

    I'm going to make one of those but will use an old lawn mower blade as I have several busted/worn out blades ;o)

    I was wondering what to do with the 'ded' blades I've accumulated over a few years. Could you give some advice on heat treatment needed?ThanksPJ

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  • $60 Custom corner office desk (USB & prototyping space)

    I built something similar around 2001. It's great to have ability to just rotate slightly to get to stuff. I added a few shelves though for extra storage

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  • crazypj commented on JunezRiyaz's instructable How to Make PCB using Marker4 months ago
    How to Make PCB using Marker

    I used an ordinary Sharpie to make my first ever circuit board but, I used the Muriatic acid (pool supplies, Wal-Mart, etc) and Hydroxide (any pharmacy) etchant. It worked fantasically well, much better than I expected

    I used an ordinary Sharpie to make my first ever circuit board but, I used the Muriatic acid (pool supplies, Wal-Mart, etc) and Hydroxide (any pharmacy) etchant. It worked fantasically well, much better than I expected. I was going to use Fritzing but actually ended up doing freehand pads and traces

    I used an ordinary Sharpie to make my first ever circuit board but, I used the Muriatic acid (pool supplies, Wal-Mart, etc) and hydrogen peroxide (any pharmacy, dollar store, etc) etchant. It worked fantasically well, much better than I expected. I was going to use Fritzing but actually ended up doing freehand pads and traces

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  • crazypj commented on Kester1's instructable Desoldering Tutorial4 months ago
    Desoldering Tutorial

    That was not an instructable with any information on desoldering. Where is solder wick? where is solder sucker?Just a short video to promote your youtube channel.

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  • crazypj commented on replayreb's instructable Turn off headlights when ignition off4 months ago
    Turn off headlights when ignition off

    That's pretty much exactly as I would have done it. Light switch will still operate as normal as long as ignition is turned on even if engine isn't running and can be turned off if he's sitting there listening to music or something (my stepdaughter used to do it, she could flatten battery by using car stereo system.) Ultimately though, it would be better to 'train' your son to check light switch, all the 'bells and whistles' on new cars just promote irresponsible behavior as 'car will do it for me' and get treated like a mobil living room

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  • crazypj commented on thomasjarrett16's instructable The Ultimate PVC Quadcopter4 months ago
    The Ultimate PVC Quadcopter

    You didn't read all of it. Clearly states $12.00 for the FRAME total cost around $300 including extra parts for prototypingPersonally, I found it a good Instructable for beginners - far less 'technical' than many I've read, plus, already knows how cheap stuff fails as he's already tried it ( I guess we all do unles we have a ton of cash spare?)

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  • crazypj commented on carl5blum's instructable Jim's Model Railroad Work Bench5 months ago
    Jim's Model Railroad Work Bench

    I'm intending to build something similar for a different hobby. You have provided some very useful information, it really helps to see other peoples 'take' on a problem and methods of building I would never have though of. Thank You for posting

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  • crazypj commented on fred.lam.5201's instructable A Marking Gauge You Can't Buy5 months ago
    A Marking Gauge You Can't Buy

    I'm not a woodworker but I do find planing bits of pallet very relaxing (and it's relatively easy to clean up) I really like your clampnig method and may try and make one of these marking gauges as the one I bought looks a lot better than it actually works. Eventually I'm going to make a 'storage bench' similar to a jewellers workbench so there will be a lot of marking out for drawers, etc. Thanks for posting

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  • crazypj followed fred.lam.52015 months ago
  • Make Sliding Barn Doors Using Skateboard Wheels

    I was wondering what holds the wheel in position on top of track? Are you using some 'T' nuts inside the track section or is the bent edge of roller holder fitted behind track?As for the other 'argument', if door weight was found to be an issue, it would be even simpler to get some ordinary round steel (or aluminium) bar and cut 'wheels' from it. If obtained from a machine shop, a flange could be turned (or added) to rear edge to hold wheel in position over track. As it is, it's a real simple , cheap way to make barn doors. If you watch some of the home shows on TV interior 'barn doors' are now a 'design' feature in homes. I'm sure skateboard wheels would be a quieter option than the standard cast iron wheels and track?

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  • crazypj commented on NutandBolt's instructable Mini Charcoal Furnace1 year ago
    Mini Charcoal Furnace

    Does a tin can work for a single melt or did you try and do several melts on the one that 'broke'?

    The vast majority of pistons are cast as it's much cheaper than specialist alloys used in forged pistons. Cast pistons are generally harder wearing with lower expansion than forged pistons. (but somewhat brittle, they crack or break rather than 'bending'). Hyperutectic pistons are cast at higher temperature with added materials (silicon, etc)

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  • Make a Steampunk Pen (NO Lathe required)

    An even cheaper way to get a mandrel would be a 7mm cylinder bolt/stud from Chinese scooter, just check listing to make sure they are 7mm and not 8mm.I found this on eBay with only minor searching Cylinder Head Stud Bolt Set, GY6 Honda Chinese Scooter ATV Motorcycle, I didn't add full listing as it will probably expire but the heading should be good for years to come. These are two different lengths so could be cut or used with spacers. It would give plenty of extra length to insert in drill chuck. Add a couple of 7mm nuts then use drill as a lathe. A cheap counterbore can be used as a tube cutter/facing too Import - Interchangeable-Pilot Counterbore 13/32", Shank Dia. 3/8", O.L. 4-1/16 If you really liked making pens and ...see more »An even cheaper way to get a mandrel would be a 7mm cylinder bolt/stud from Chinese scooter, just check listing to make sure they are 7mm and not 8mm.I found this on eBay with only minor searching Cylinder Head Stud Bolt Set, GY6 Honda Chinese Scooter ATV Motorcycle, I didn't add full listing as it will probably expire but the heading should be good for years to come. These are two different lengths so could be cut or used with spacers. It would give plenty of extra length to insert in drill chuck. Add a couple of 7mm nuts then use drill as a lathe. A cheap counterbore can be used as a tube cutter/facing too Import - Interchangeable-Pilot Counterbore 13/32", Shank Dia. 3/8", O.L. 4-1/16 If you really liked making pens and found a market for them, the 'profits could be used to buy correct equipment which is easier to use

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  • crazypj commented on Ross Workshop's instructable Monster Soldering Gun1 year ago
    Monster Soldering Gun

    Got to agree with you, something that crazy is fantastic

    I think I want to make one for no reason other than I can. Absolutely no idea what it would ever be used for but if I think of something, like Arnie in Terminator, 'I'll be back' LOL

    Add a GFI to prevent electrocution. Plug in one's aint too expensive

    Never commented so much on any project. Gotta love something this crazy ;)

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  • crazypj followed joulethief6691 year ago
  • crazypj commented on ADintheStudio's instructable Tiny Dowel Joints Using Skewers1 year ago
    Tiny Dowel Joints Using Skewers

    I have to make several small drawers from pretty thin wood so I'm going to try it on some box joints, (finger joints) should look really neat when drawer is open? (I hope)

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  • crazypj commented on stannickel's instructable Table for a Cheap Tablesaw1 year ago
    Table for a Cheap Tablesaw

    I have the same saw for the same reason ($99.00) sounds like a tool snob comment from batvette? Just because it's small and cheap doesn't mean it can't be used for precision work, you just have to know it's limitations and take more time setting things up.It isn't a production saw by any means, but, 'we' (the people using it) are not production woodworkers

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  • crazypj commented on jimustanguitar's instructable Tune Up Your Table Saw With a 2x41 year ago
    Tune Up Your Table Saw With a 2x4

    That's a great 'structable' not using any expensive equipment means anyone can check and adjust their table saw. I'm going to check mine as soon as I finish some unrelated projects

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  • crazypj commented on JoshF43's instructable Electromagnetic Sensor1 year ago
    Electromagnetic Sensor

    Could this be used to find nails or metal in wood? An electromagnetic 'nailfinder' is expensive for the amount of use it will get but this would be real handy for 'pallet wood' builders

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  • crazypj commented on thetoolman's instructable Chuck Box - Camp Kitchen1 year ago
    Chuck Box - Camp Kitchen

    Pretty cool your still monitoring build (even if it did take a while to get back to people ;) )I've been 'designing' a fold up case for electronic/electrical stuff along similar lines to have everything in one place with a minimum footprint yet still be transportable. I think I'm going to re-design now so I can fit a 400w inverter for solder station or power supply and have an 'on site' electronics workstation with no need to run extension cords or start up generator

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  • How to make a reliable motorcycle voltage regulator

    Good Instructable but only applicable to permanent magnet alternators. (PMS )Electromagnetic alternators where field coil needs a monitored voltage to provide magnetism needs extra circuitry (EMS) It's always a good idea to have airflow to heat sink should stay nice and cool back there but may get 'attacked' by chain guard at full bump?

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