The Sledgehammer - Shooting for 1,000hp
- Thread starter AlexLTDLX
- Start date
MkngStffAwesome
Active member
Which winding of the motor did you get .. I know you got a 30100 but how many turns ? 4-40 ?
MkngStffAwesome
Active member
Ok cool that is a 840 ish KV motor then, which we hope is a good deal more than the current TP motor.. that must me in "star" (D) config or 480 in Y
Making some progress. Just need to cut down the hex drive socket (already machined except still needs a setscrew), make a smaller washer/spacer under the drive bolt and fab up a motor support (already have the materials). Then I need to make the power cables (have that stuff too) and a long sensor cable; then test it and install it.
There's 0.3mm clearance around the drive. It seems to have turned out pretty close to perfect:
There's 0.3mm clearance around the drive. It seems to have turned out pretty close to perfect:
Robertson Tech
New member
Stepper motor controlled Roller to move flexible solar cells out of deposition chamber where the p junction is grown motor and drive inverter from sew eurodrive Im getting better I learning how to type with 8 fingers
this is what it was in
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That's pretty cool. But still sorry about your injury. I've been working on the motor support for the Sledgehammer (aside from that, it's mechanically done). And I realized I've been getting a little too brave around the lathe. Every now and then I need a reminder.
FWIW, both my vertical metal cutting bandsaws broke today - my Portaband with a bench mount broke a blade - it seems to break a lot of blades; I guess because of the severe twist it imparts onto the blade. My other "metal cutting" bandsaw is really just a Black and Decker 7.5" bandsaw my dad picked up from a garage sale back when he was still around. It just sat on the floor of his garage. It needed a fair amount of work - new tires on the wheels, a general tune up and today I discovered the motor brushes were shot. Fortunately, I had some brushes from some harbor freight junk I bought years ago lying around; I was able to modify them to fit (carbon motor brushes file REALLY easily - actually a joy to shape). Of course, one of the brush holders broke too. It's made of bakelite, so superglue seems to hold it together pretty well. The nice thing about the Black and Decker is that I've only got about $70 in it, and it runs at a speed that's really too slow for wood, too fast for steel, but about perfect for aluminum. One of these days (probably when I get a house with a bigger garage), I'll invest in a decent vertical bandsaw and a really decent belt sander/grinder.
FWIW, both my vertical metal cutting bandsaws broke today - my Portaband with a bench mount broke a blade - it seems to break a lot of blades; I guess because of the severe twist it imparts onto the blade. My other "metal cutting" bandsaw is really just a Black and Decker 7.5" bandsaw my dad picked up from a garage sale back when he was still around. It just sat on the floor of his garage. It needed a fair amount of work - new tires on the wheels, a general tune up and today I discovered the motor brushes were shot. Fortunately, I had some brushes from some harbor freight junk I bought years ago lying around; I was able to modify them to fit (carbon motor brushes file REALLY easily - actually a joy to shape). Of course, one of the brush holders broke too. It's made of bakelite, so superglue seems to hold it together pretty well. The nice thing about the Black and Decker is that I've only got about $70 in it, and it runs at a speed that's really too slow for wood, too fast for steel, but about perfect for aluminum. One of these days (probably when I get a house with a bigger garage), I'll invest in a decent vertical bandsaw and a really decent belt sander/grinder.
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Robertson Tech
New member
yeaayy ... awesome!
WB projects
Active member
I hope I see my batterys soon 
we had our first 10°C yesterday 
we had our first 10°C yesterday
MkngStffAwesome
Active member
nice... Are you ever going to plug the big hole ?
WB projects
Active member
Nice work alex 
MSA - Right now that's my inspection/lubrication port. For now I just put a piece of gaffer's tape over it when it's on the car.
WB - Thanks! That means a lot coming for you - being a machinist and all.
cmoalem - The dumb reference is to MC Hammer/Hammertime and me calling this the "sledgehammer." MC Hammer was hocking "hammerless" adhesive wall hooks not too long ago:
I was going to reference that and how Ice T is now the spokesman for Cheerios - snack food for toddlers for decades. This is the guy who made a name for himself with the song, "Cop Killer." The cognitive dissonance is palpable:
It doesn't help that the "cop killer" is snapping his fingers like a doo-wop singer from days of old, but the worst (i.e. most laughable) is the ridiculously over-dyed mustache and goatee. Frankly, when recording the video, I plain forgot to mention it. It would've taken the video off the rails anyway, so I'm ok with it. Instead, you all here get the laughs unlike the unwashed youtube-only masses. But just picture Ice T singing "Cop Killer" (google the lyrics if you're unfamiliar with it) to a bunch of toddlers and soccer moms. That would be hilarious to see.
WB - Thanks! That means a lot coming for you - being a machinist and all.
cmoalem - The dumb reference is to MC Hammer/Hammertime and me calling this the "sledgehammer." MC Hammer was hocking "hammerless" adhesive wall hooks not too long ago:
I was going to reference that and how Ice T is now the spokesman for Cheerios - snack food for toddlers for decades. This is the guy who made a name for himself with the song, "Cop Killer." The cognitive dissonance is palpable:
It doesn't help that the "cop killer" is snapping his fingers like a doo-wop singer from days of old, but the worst (i.e. most laughable) is the ridiculously over-dyed mustache and goatee. Frankly, when recording the video, I plain forgot to mention it. It would've taken the video off the rails anyway, so I'm ok with it. Instead, you all here get the laughs unlike the unwashed youtube-only masses. But just picture Ice T singing "Cop Killer" (google the lyrics if you're unfamiliar with it) to a bunch of toddlers and soccer moms. That would be hilarious to see.
SGL12GUNNER
Member
What size wire are you going to use for this bad boy?
Looking Great Alex few years ago I thought about doing this on GT 28 variant but nothing out there had the rpm.
I do a bit of speed running with 1/7 scale rc cars currently have dual water cooled TP 4040 1850kv rated for 12s at 90,000 rpm unfortunately not rated for the kinda hp your using now only around 5hp each.
I do a bit of speed running with 1/7 scale rc cars currently have dual water cooled TP 4040 1850kv rated for 12s at 90,000 rpm unfortunately not rated for the kinda hp your using now only around 5hp each.