![]() I’m told it uses the similar internal design as the GC1850 cordless with changes learned from making the GC1850.įrom the images I’m not picking up on that so it sounds more like marketing spin and that the fabricators may have had more sway.įuel cell & batteries insert from rear with a snap latch inspired by the old Makita battery clip. ![]() The GCP650, just like the GC1850, was a collaboration between overseas fabricators / suppliers and Grex. Their reasoning is that they want to take things slow as they ‘introduce’ the tool. Ordering a GCP650 puts you on about a month wait since they’re only portioning out a few at a time to each of their dealers right now. If you already purchased they will sell you a case at a discounted price when available. There are a couple of disappointed reviews on ToolNut - so I assumed they might be working bugs out.Ī call to Grex supports that there were some initial problems with suppliers parts but they claim it’s been addressed and anyone with any problems only has to send theirs in for service to correct any issues. I think this has been out since January but it’s been difficult to get. What's happening, whether big tank is inverted or they fitted it with a siphon tube, is that they are getting about a half fill. To properly do it you need an expensive pump. *oh yeah, those videos you see where guys refill their own tanks from a bigger tank. If you don’t shoot that often, a single 20oz if fine if you keep a rough track of nail count. To compliment the 20oz you should also consider a 5lb tank ($64 filled includes tax out the door & you can use same regulator as they just spin on & off by hand). ![]() It’s fine to use it for the occasional burst but those come at a steep cost to nail count. I would still recommend this size tank for smaller jobs like a few doors & casing or a fair amount of base / crown. I expected to go back to testing the nail guns but discovered there was only enough pressure left for a squirrel to pass gas. Thinking that Co2 is less productive when it’s cold out I placed tank out in the sun. After about 40 bursts the tanks was frosty ice cold and pressure had dropped. ![]() I was told to only use short bursts, like “one-one-thousand” to keep reg from freezing up. I clipped the tank to my belt, adjusted pressure to 80psi, and walked around dusting off things like screens, stair treads, fixtures etc. Including yesterdays testing I shot around 100 nails total plus a few prior dust off tests before using it for dedicated dust off around the clients house today. (if you blinked you would miss the gauge needle momentarily drop to 50psi with 15ga before springing back during each piston drive. This has more to do with regulator & less the size of tank. (fwiw - my 15 is oilless with a slightly higher volume draw than typical so not sure how that affects things. 15ga drove nails well enough at 90psi but it felt underpowered and I paused 2 secs between shots. I wouldn’t try bump fire 15ga gun though. With the 15 you can move at a moderate to moderately fast pace but you should adjust pressure closer to 115 psi. Took tank to job site thinking I would use it for dust off around house.įirst I wanted to shoot some more nails, testing 15ga and 18ga. ![]()
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