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| View Poll Results: Do you have a Comm lathe | |||
| Yes |     | 10 | 45.45% |
| No |    | 11 | 50.00% |
| Comm lathe? you mean lathe motor? |    | 0 | 0% |
| WTF are you talking about? |    | 1 | 4.55% |
| Voters: 22. You may not vote on this poll | |||
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07-31-2005, 08:14 PM
| #1 |
| Rock Crawler Join Date: Mar 2005 Location: Dude on my dirt bike in SoCal!!!
Posts: 859
|  Comm lathe... Hey i was just wondering who else has a comm lathe.... i use mine so much its such an invaluable tool for the electric rc guy...i am sure it has paid for itself 10 fold in not having to buy new armatures. I have a Hudy comm lath and its great!!! Also why the **** would you buy a freakin dimond cutting bit for 80-100 bucks when you could just buy a pack of 5 carbite bit for 5 bucks even though they only last 1/10 the life a dimond bit! Any ways VOTE!! |
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07-31-2005, 08:54 PM
| #2 |
| RCC Addict Join Date: Jul 2004 Location: The other Crawler State
Posts: 1,254
| I have a Hudy too with a diamond bit. Mine came with the bit and has been cutting for 8 years. I think you get a better cut with a diamond bit but you better know what your doing or like you say you are out of some coin. It's all in the set up, if it is spot on your diamond bit will last forever damn near. |
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08-01-2005, 12:57 AM
| #3 |
| Pebble Pounder Join Date: May 2005 Location: Oregon City, Or
Posts: 105
| ^ What he said. Diamond bits cut better. The finish is better. I have no idea what performance differences there are between a mirror finish and a semi-gloss finish, but I sure enjoy that advertisement quality mirror-like finish. Also, the bit height is critical to a good cutting lathe. I would hate having to set that every 5-10 times I cut a motor. And don't tell me you can get more than 10 coms out of a carbide bit... I had a Cobra budget lathe for 10 years with the same diamond bit. I upgraded to the newest Cobra setup with the powerbase and bundled diamond bit. I have no idea why I did that. It doesn't cut any better (although the ergonomics were improved slightly). |
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08-01-2005, 10:12 AM
| #4 |
| Rock Crawler Join Date: Mar 2005 Location: Dude on my dirt bike in SoCal!!!
Posts: 859
| ya sure dimond bits are cool in that they like last forever... but i am never gonna pay that kind of money for a dimond bit. Ya sure i only get like 10-12 lathes per carbide bit but hey 5 bits for 5 bucks thats 50-60 lathes for 5 bucks... |
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08-01-2005, 06:49 PM
| #5 |
| Pebble Pounder Join Date: May 2005 Location: Oregon City, Or
Posts: 105
| ...and variable quality finish, the time invested in setting up each bit, and the task of actually purchasing all those bits. I am a do it right and do it once kinda person, I guess. And I enjoy quality. Such as your Hudy setup. Damn they make NICE stuff. I have seen diamond bits for around $70. That's really not that bad. I spend way more than that on just one servo, twice that one an ESC, about that on a set of tires, batts, radio, reciever, on and on. $70 is one of the budget items. Especially considering it's longevity. |
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08-01-2005, 06:58 PM
| #6 |
| Rock Crawler Join Date: Mar 2005 Location: Dude on my dirt bike in SoCal!!!
Posts: 859
| you kno after alll of this i am considdering a dimond bit... how long do they last? do they chip or break? and yes my hudy lathe is Very verry nice |
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08-01-2005, 09:19 PM
| #7 |
| Rock Stacker Join Date: Jul 2005 Location: Fayetteville, AR
Posts: 92
| So can we talk a little about what a lathe actually does for you. I know what it does, but what I mean is, do we need to worry about it? WAAAY back when I had Monster Mash motors in my first clod and I don't think I ever did anything to them. I'm sure performance dropped eventually. I just(2 hrs ago) finished my new Clod with lathe motors and I'm wondering if I should invest in a lathe or just don't worry about it. For $19ea I'll buy a couple new motors every year if that's what I need to do, but if I need to tune up my motor every month or so I guess I'll need to get some new tools(hey now, that's not such a bad thing.) -Jay |
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08-01-2005, 10:46 PM
| #8 |
| Rock Crawler Join Date: Mar 2005 Location: Dude on my dirt bike in SoCal!!!
Posts: 859
| dude get a lathe.... it will make your motors run so nice for sooo long if you keep the comm nice and true... i late my high proformance motors the ones that spin in excess of 35 000 rpm i lathe them ever 3rd to 4th battery just to keep the comm from having big bumps in it... i only take mabey off 1-2/1000 of an inch when i do this. |
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08-02-2005, 01:09 AM
| #9 |
| Pebble Pounder Join Date: May 2005 Location: Oregon City, Or
Posts: 105
| The higher the turn count of a motor and the less voltage you apply to it, the less you need to turn (resurface with a lathe) the commutator. With 6 or 7 cell packs and 55T motors, you will almost never need to turn the comm. The current is really low and the brushes have a friendly compound. When you really need a lathe is when you get down into the low turn motors. Or motors using high silver content brushes. For rock crawling in general, lathes are not nearly as critical as some other forms of RC such as 2WD 1/10 cars and trucks, 4WD cars, etc. With a bit of practice and a properly setup motor lathe, you can get perhaps 10x the life expectancy out of a motor. And the motor will run like it was new over the course of it's lifetime. |
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