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i am going to be buying a mod motor lathe. what is better v block or bearing lathe i am looking at the entegy mod fasion motor lathe with bearing support. what is the best and why? i have found one for 39.99 plus shipping.

I think that the v-blocks are supposed to be better. It has something to do with the precision/vibration of the bearings. I have an older xipp/integy mod lathe with the bearings, and it seems to work just fine.
Unless you are competing at a high level and need your motors to be tuned to perfection, it probably doesn't matter which kind of blocks you get.

V-Blocks all the way!

I am looking for one too. $40 seems a good price. Where did you find it?

V-blocks, as they have they least amount of play possible, they will ALWAYS be better than anything else. -Jeff

8rad wrote:I am looking for one too. $40 seems a good price. Where did you find it?

Ebay.

well i have found another. is the trinity twister motor lathe anygood? i found one for 60.00 bucks with slave motor and dimond bit. should i go for it? Thanks

If the seller is local, you want to check to make sure there is no abnormal binding or play on the guides. Also check the bit to make sure the diamond tip is not chipped off. Ideally, have the seller do a quick cut before you pay him (comm sould be smooth satin finish). Good luck!

i bought the trinity and it does great.

I have an older trinity lathe, and I like it. I need to re-wire the on/off switch.

Like an idiot, i dropped my diamond bit. Its not cheap to get them thru trinity, does anyone have a cheap source for getting a bit re-done? I'm finally stepping up and getting a BL system, but I have quite a few brushed motors I don't want to give up on just yet.



MOmo

just buy the proper size carbide bit. they are like $4 through tool places like mcmaster.
If you are only freshening up old motors no need to drop the $$ on diamond. besides many will argue that a carbide tip is as good if not better than diamond. From what I've read the skill of the user is more important to the final finish on the comm than the choice of tip material.
Given my lack of skill I stick with the $4 bit myself.

http://www.rcottawa.com/index.php?topic=53.0;wap2

I have to agree with Anthony... not that I don't usually.
I have both bits and not being a pro racer I can't tell the difference between the results. Be patient and only shave off a tiny bit at a time... you'll be good to go. I have eeked out a ton of life from my old motors.

I just picked up a used Hudy lathe on eBay, should be here within a week. I've used regular lathes before so use is no problem, but how small can I cut the comm before they are too small? I've got some older motors I'll try and revive before I toss them.

I am not an expert, but, I think smaller than about 0.270", is not really worth trying to revive.

dldiaz wrote:I am not an expert, but, I think smaller than about 0.270", is not really worth trying to revive.

That's right for the regular diameter comm's but there are some in-between sizes out there that you have to watch out for. The Reedy Quad Mag 19 turn, the Reedy Krypton's and Ti Worlds, and the old Sonic's.