zerograffit Posted January 6, 2008 Report Share Posted January 6, 2008 (sry quickie type) Drilling frm 6mm to 8mm gearbox hole, is that out of the question? i mean gunner got this non electrical tools http://www.gunnerairsoft.com/catalog/produ...products_id=756 even if you precisely drill them it would be ok? what do you think? i think, that groove at the side of the hole, would it matter? cuz some clone GB doesn't have that groove. by groove i mean, that half drilled for busshings to fit or washers..... gotta go late for work.. Link to post Share on other sites
Carrion Posted January 6, 2008 Report Share Posted January 6, 2008 precisly drill them yes and that means a proper radial drill with adecent opperator at least for the average joe no it cant be done Link to post Share on other sites
tiff_lee Posted January 6, 2008 Report Share Posted January 6, 2008 Is the outermost radius the same on 6mm and 8mm bearings and bushings? I only ask as that was the case with my AGM 6mm plastic bushings and CA 7mm metal bushings so all I did was ream the hole to 7mm and the metal bushes fitted fine. Link to post Share on other sites
Slynx Posted January 6, 2008 Report Share Posted January 6, 2008 I really wouldn't want to drill out the holes, any slight alignment problems will cause wear and eventualy break the gears before their time. Why do you want to drill out to 8mm bushs, can't you get an 8mm gear box instead Link to post Share on other sites
zerograffit Posted January 7, 2008 Author Report Share Posted January 7, 2008 its a no cost way to have 8mm GB.... plus i'll do it on a cloned GB and i have high confidents to precisely drill them except for.... after drilling, 8mm bearings won't fit, due to the groove at the edge of the hole (if u know what im talking about) who say i should go for it? any advice??? i don't mind drilling and GB will fail but drilling them and bearing wont fit is just throwing money.... drilling an 8mm hole surely will fit the bearing but putting the gears and shell, not to mention washers! thats the part i'm worried about. Link to post Share on other sites
RSM Posted January 7, 2008 Report Share Posted January 7, 2008 I really don't get how those tools are supposed to work, it looks like a tap and die set but how is that supposed to create the ridge for the bearing flange to sit in? Link to post Share on other sites
srpg Posted January 7, 2008 Report Share Posted January 7, 2008 It's a set of drill/cutting tools They give you enlargement tools to enlarge the hole from 6mm->7mm->8mm and a different tool that will then create the recessed portion on the gearbox for the flange of the bushings. though gunner is charging his monopoly pricing on these... many on the Chinese message board I frequent has used these tools with no problems. here's one from Chinese auction site taobao http://auction1.taobao.com/auction/2203/it...89e9b5be6.jhtml Link to post Share on other sites
zerograffit Posted January 7, 2008 Author Report Share Posted January 7, 2008 so, thats what its called "flange" ....... and it is essential for the GB hole or if not, there wouldn't be enough space to get the GB closed, even without washers...? Link to post Share on other sites
MDK_Marshal Posted January 7, 2008 Report Share Posted January 7, 2008 Huh. Nifty little things, i may well look into getting some of them for myself, along with some big element bearings... And Zerograffit, yes, the flange is essential. As you said, without it being present to allow the bushings to be flush with the gearbox, the gears would likely not be able to spin and would probably even stop the gearbox from closing, before you put any shims on at all. Link to post Share on other sites
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