Black magic spur gear
- Thread starter Gofastgas
- Start date
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- Messages
- 2,798
- Location
- Manitoba
Welcome to steel
Spur gears.
Spur gears.
MonsterAir
Lone Racer 🤠
- Messages
- 2,369
- Location
- Long Island NY
I've got one. Holding up well but yea damn heavy.
yes you can machine em down mate, but you have to take your time, they are hardened right through,
i managed to almost halve the weight of mine, took the tooth width down to 6mm, bored holes and machined down as much of the excess weight as i dared to,
its held up fine with no issues
,heres mine after i finished it and painted it to look pretty again
,
John Parks
Print my own
- Messages
- 4,006
They are heavy, and you can see a difference when running a lighter geared setup, but they do exactly what they were meant to, work. The black magic transmission gears stay clear of though
Blackbone gears are about as good as they get, light and strong but you pay for them.
Blackbone gears are about as good as they get, light and strong but you pay for them.
Gofastgas
Well-Known Member
- Messages
- 78
- Thread starter
- #7
That's exactly what I'm talking about, beautiful work man,thank you for the info,yes you can machine em down mate, but you have to take your time, they are hardened right through,
i managed to almost halve the weight of mine, took the tooth width down to 6mm, bored holes and machined down as much of the excess weight as i dared to,
its held up fine with no issues
heres mine after i finished it and painted it to look pretty again
Mick Boomer
Well-Known Member
- Messages
- 680
I have a set I haven’t installed because there heavy af. Did they drill out easy?
thanks mate
, and you're welcome,
MonsterAir
Lone Racer 🤠
- Messages
- 2,369
- Location
- Long Island NY
My concern would be getting the holes even. He really did a great job
in short mick they're hard to drill and machine, very hard steel,
but slow and steady and it works out
,i marked out the holes , then drilled pilot hole for each hole, then went up a couple of sizes at a time,
then finally used a teardrop shaped carbide burr in the drill press at slow speed and finished the holes off to about 12mm,
turned the face down at fairly slow speed in the lathe, small bites at a time,
just needs time and patience monster,
measure and double check etc, then centre punch and go slow as in last post
Mick Boomer
Well-Known Member
- Messages
- 680
How much would you charge me to drill mine out 
I hate not being able to use them.
I hate not being able to use them.
MonsterAir
Lone Racer 🤠
- Messages
- 2,369
- Location
- Long Island NY
I was JUST thinking the SAME thing!!!How much would you charge me to drill mine out
I hate not being able to use them.
Mick Boomer
Well-Known Member
- Messages
- 680
yes you can machine em down mate, but you have to take your time, they are hardened right through,
i managed to almost halve the weight of mine, took the tooth width down to 6mm, bored holes and machined down as much of the excess weight as i dared to,
its held up fine with no issues
heres mine after i finished it and painted it to look pretty again
How much would you charge me to drill mine out
I hate not being able to use them.
@Mick Boomer and @MonsterAir ,its really not cost effective when all said and done ,
took me way more time to drill and lighten than you would want to spend on it,
got mine cos couldnt get blackbone gears at the time and someone bet me i couldnt halve the weight of it and keep it usable/reliable,
i just fell short of half the weight though,
if i was your side of the pond i'd consider doing a couple, but am in uk so shipping would cost more than the gear itself,
so yes it can be done, but not cost effective time wise
,took me way more time to drill and lighten than you would want to spend on it,
got mine cos couldnt get blackbone gears at the time and someone bet me i couldnt halve the weight of it and keep it usable/reliable,
i just fell short of half the weight though,
if i was your side of the pond i'd consider doing a couple, but am in uk so shipping would cost more than the gear itself
,so yes it can be done, but not cost effective time wise
Mick Boomer
Well-Known Member
- Messages
- 680
Poop
- Messages
- 13,105
Grab some carbide bits and have at it. Likely it will cost nearly as much in bits as the gear, but it will drill out much nicer then another bit.
Gofastgas
Well-Known Member
- Messages
- 78
- Thread starter
- #20
Got mine done thanks for the adviceyes you can machine em down mate, but you have to take your time, they are hardened right through,
i managed to almost halve the weight of mine, took the tooth width down to 6mm, bored holes and machined down as much of the excess weight as i dared to,
its held up fine with no issues
heres mine after i finished it and painted it to look pretty again
