Welcome to Gaia! ::

Machine Deck X 69
Monsters
Union
Trigon
Heavy mech support platform X 3
y- dragon head
Z- metal tank
Tuner
Black salvo
Gemini
Ancient gear knight
Effect
Blue thunder T-45
Truckroid
Stealthroid
Expressroid
Drillroid
Proto-cyber dragon X 2
Submarineroid
Gear Golem the Moving Fortress
Decoyroid
Ancient gear X 2
Machine king
Cyber dragon X 2
Ancient gear engineer
Ancient gear golem
Jinzo
Barrel dragon
Perfect machine king
Flying fortress sky fire
Spell reactor re
Trap reactor y fi
Summon reactor sk
Normal
X- head cannon

Spell
Continuous
Future fuison
Equip
Autonomous action unit
Black pendant
7 completed X 2
Big bang shot
quick play
My body as a shield
Serial spell
Inferno tempest
Normal
Vehicroid connection zone
Bait doll
Different dimension capsule
Overload fusion
Lightning vortex
Machine duplication
Spiritualism
Monster reborn
Polymerization
Dimensonhole
Question

Trap
Continuous
Pixi ring
Spirit barrier
Counter
Negate attack
Spell vanishing
Black horn of heaven
Curse of royal
Spell- stopping statue
Royal surrender
normal
Hidden book of spell
Lightforce sword
Dust tornado
Covering fire
Magic cylinder
Return from the different dimension
Sakuretsu armor
Dark sprit of the silent
Conscription

Extra deck
Fusion
XYZ- dragon cannon
Chimeratech fortress dragon
Chimeratech over dragon
Cyber twin dragon
Cyber end dragon
XZ- tank cannon
Super Vehicroid - Stealth Union

Synchro
Power tool Dragon

A deck can be 40+ cards in a deck... so the deck is legal just too large.

Oh well that`s something new too me. ^ - ^

Good, it looks like you're going for a Machine deck anyway, so this advice won't feel so much like I've just copy and paste'd it. Go out and buy 2-3 "Machina Mayhem" starter decks. You can build a fairly decent Machine deck with just the cards from them, and it will only run you about $10 a piece. Plus, you've got some cards in your current deck that can be integrated into what you make from the starter decks:

-2 Cyber Dragon
-1 Future Fusion
-1 Overload Fusion
-1 Monster Reborn
-1 Chimeratech Overdragon
-1 Chimeratech Fortress Dragon
-1 Cyber Twin Dragon
-1 Cyber End Dragon

Lol, you don't even use Machina Force in the deck,; he's horrible. You're only using basically Gearframe, Peacekeeper, and Fortress.

Having a deck with good combos is useless without consistency. This deck, where like 90% of the cards are one-of copies, is not consistent. It can't be; you have no way to get any worthwhile combos off outside of sheer luck. For example, you have the Reactor series and Sky Fire. In order to get Sky Fire on the field, you have to have all three Reactor monsters on the field at the same time during your turn, however you have no way of getting them on the field or even to your hand outside of simply drawing your one-of copies of each. And even if you could somehow get all 3 Reactors in your hand, you'd need a minimum of 4 turns to put them all in play. That's an extremely long time, especially considering your opponent can and will stop you.

As for the card choices themselves, most of them are poor. Cards like Inferno Tempest don't do anything in this deck. Equip Spell cards (like 7 Completed) are below par, as they turn simple one-for-one cards (like Bottomless Trap Hole and Smashing Ground) into one-for-twos; your opponent is using one card to get rid of two of yours.

Now I understand that you might be attached to this deck and that's fine, but this deck needs a COMPLETE overhaul if you want it to be considered good.