GBH 18V-28C vs GBH 18V-34CF [

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GBH 18V-28C vs GBH 18V-34CF [

Рет қаралды 8,461

Boltah Downunder

Күн бұрын

Пікірлер: 33

@toolscientist 7 ай бұрын

I like your dedication. Other channels just test and post without thinking about if the results make sense. But you've seen something weird and spent another hour or so verifying it.

@pookinsp2324 7 ай бұрын

Your perceptions of the " overzealous" impact of these larger rotary hammers is dead on. The "soft start" programming of the Bosch GBH 18V-34CF is a lifesaver. It took a while to get used to this soft start feature on the Bosch, but without soft start the 5.83 Joules (4.3 foot pounds) of initial impact can make a quick mess of things at the start (as you so accurately portrayed). Once the hole is started, its off to the races. I do wish we could also program in higher rpms (like 1,000) when that extra rpm would be justified. This is the first place I have seen a clear description of the difference between the impact mechanism of the two styles of rotary hammer. The mechanics are quite different.

@Zozo806 3 ай бұрын

the 3 jaw chuck is really something from the past. In the days of less powerful drill drivers it was used in Concrete forming or for roofers screwing lags.

@garrickgarz3808 4 ай бұрын

Chuck with no hammer is likely for diamond core drilling

@pookinsp2324 7 ай бұрын

This was a exciting twist. RPM's sometime make a difference/ sometimes not. Does the Milwaukee M18FHP/2915-20 (M18 FUEL) show up somewhere in these rankings. I struggled to find the M18FHP/2015 on the charts. The M18FHP has 4.881 Joules (3.6 Foot Pounds) of impact energy which puts it close to the GBH 18V-34CF (5.83 Joules/4.3 foot pounds). A lot of the manufacturer are re-releasing these rotary hammers with "add on" dust collection in an effort to comply with new health and safety guidelines. Early efforts seemed like an afterthought often requiring a separate battery source. In 2022 Bosch (and others) introduced drill bits that include a internal hollow channel that draws the dust from the bottom of the hole and improves performance. (BOSCH DXS2104 SDS-plus Speed Clean Dust Extraction Bit).

@BoltahDownunder 7 ай бұрын

Indeed! Somehow I haven't actually published the bigger Milwaukees yet, but spoilers: the 2915 is more like a 30 or 32 mm drill than the 28mm they rate it to. So like 1"1/4 rather than 1"1/8. It's far bigger & harder hitting than the others in its class. So yes you're right its performance is right up there, because Milwaukee have under-rated it basically. I'll have to do the video for it soon!

@fiaao546 7 ай бұрын

gbh18v-22 spotted on the spreadsheet...video coming soon??? also I use the 34C everyday, its the highest quality, best feeling drop motor RH I've ever used. Don't really use the detachable 3 jaw chuck. having the reverse on the dial is different but you get used to it. drills kinda slow but no shortage of power when chipping.

@BoltahDownunder 7 ай бұрын

It is! But it'll be a few weeks, I don't want to do 3 Bosch videos in a row. And agree regarding the 34CF! If I were using hammers this big regularly I would for sure be using the Bosch. same for the 28c. They're both by far the nicest to handle out of the bigger hammers I've got. If you were using that all day your arms would thank you

@proudbacteria1373 7 ай бұрын

@@BoltahDownunderNew Bosch v18-22 costs $200 ( US). Seems like one of the best in its class of compact cordless rotary drills.

@KennyMinigun 7 ай бұрын

The changeable chuck is indicated by the F letter in the model name. The GBH 18V-28 also comes as an FC. It is just the question which one you choose.

@BoltahDownunder 7 ай бұрын

Typically yes but as far as I can tell, they only offer the -34 in CF version

@toolscientist 7 ай бұрын

15:14 I wonder if a quad tip would make better use of the impact energy on small holes

@BoltahDownunder 7 ай бұрын

It may well do! Before this concrete is used up I'd like to try some standardised size vs performance for a few styles of bit and see if I can get a nice predictive curve going. But we'll see if any more giant drills come on crazy sale Like the big Bosch's did. Did you like the bonus Makita tests in here? My 182 surely does better than my 242

@toolscientist 7 ай бұрын

@@BoltahDownunder yeah, that 182 is definitely the better drill. Maybe the 242 would take the lead at larger diameters, but it's more likely that the 182 has a better hammer mechanism and maybe motor. It seems like they've really under-rated the 182 in the specs.

@BoltahDownunder 7 ай бұрын

I think the 242 would be better in larger diameters, but I don't think I'll bother testing that specifically. Believe it or not I try not to get too granular with these things, cos at the end of the day we're only testing a single tools. All of us tool testers. To get the specs the manufacturer would be testing like 10 of each tool, and they will vary slightly between them

@toolscientist 7 ай бұрын

9:42 so are the 34CF and 36C identical except for SDS+ vs SDS-MAX? Looks like they dropped the joules down a bit. Maybe to prevent mushrooming the smaller SDS+ shank.

@fiaao546 7 ай бұрын

identical except for the impact force, chuck and length of the barrel.

@BoltahDownunder 7 ай бұрын

Pretty much. 34 is 200g lighter. Looking at the parts list the 34 has a smaller piston to reduce impact, but same motor. Which surprised me because the 36 is almost 20% more expensive, and the free battery I got with it was 12ah, rather than the 8ah with the 34. So I was expecting some other differences too.

@toolscientist 7 ай бұрын

@@BoltahDownunder seems a bit lazy. They should have changed the gearing to up the rpm and bpm. They left a lot of performance on the table with this tool.

@donalexey 5 ай бұрын

@@BoltahDownunder I have a 36 version, and they seems identical. I alsso think that they limit the max hammer power to not mushroom the bits.

@erickperez9436 3 ай бұрын

@@BoltahDownunderh|

@itsnot1673 7 ай бұрын

Personally i could see the drill chuck being useful for maybe drilling through steel and metal which often goes hand in hand with concrete as the slower speed is what you want anyway and higher weight of the tool would be useful too

@BoltahDownunder 7 ай бұрын

Yep, that's a strong possibility

@user-nb3oe9dk7r 7 ай бұрын

Хорошо, что появился и у Макиты и у Боша аккумуляторный отбойник.😊👍👏

@octopusink591 6 ай бұрын

Definitely use that drill and chuck for drilling large holes in aluminium plate dawg.

@robertrada4783 7 ай бұрын

Was looking at the chart. My Nuron TE6 definitely was a tad quicker than the XGT I had. I got the 6 because the 4 was delayed for close to a year. Turns out I got lucky. 😂

@BoltahDownunder 7 ай бұрын

Yeah if you're after a 28mm hammer the TE6 is the way to go. The TE4 really should be rated to like 24mm, it just doesn't have the impact force to do 28mm. The old version was rated to 18mm!