13BT_Starlet

iTrader: (2)

I have these that works find for me ! http://www.xtremerotaries.com/main2.htm , http://www.xtremerotaries.com/main2/engine_services.htm

wickedrx2

x-tremerotaries@bigpond.com

joeylyrech

iTrader: (11)

screw that with the money that im spending on shipping i can get my block done and use the studs that pica sent me,thanks guys

13BT_Starlet

iTrader: (2)

Hey Brotha thats what I was talking about , if you know or could find someone thats has a cnc machine have him put a program together along with an alignment tool and still put money in your pocket for something else . Thats how I am getting mines done , I know of four ppl with cnc machines around here were I live but its far from you , get in touch with Boris with Deliruim Racing I got his number if you need it his down in the north I am sure he knows someone .

Zero R

iTrader: (1)

I have a CNC setup to do this, I also make oversized studs as well if needed.

~S~

13BT_Starlet

iTrader: (2)

Where are you located ? got any pics of your products and what material are you using for the stud ?

13B-RX3

iTrader: (2)

Interesting.

Zero R

iTrader: (1)

Located in chicago, studs are chrome-moly, nuts are o-ringed stainless.


~S~

joeylyrech

iTrader: (11)

how much you charge for the cnc machining?

bigdv519

iTrader: (3)

13BT_Starlet: A CNC and a program are not necessarily required. My housing/irons were machined on a semi-programable manual lathe, but none of the programming functions were used. Indicating the housings/irons is the key.

Joey: So now you are going to get your housings/irons machined to accept the oversized studs? The oversized studs your recieved, do they screw into the stock threading in the front plate? Can you measure their thickness and relay the info to us?

Zero R: How thick are your studs? Stock threading on front plate? Do you have any treatments done to the stud material? Prices?

Zero R

iTrader: (1)

Machining is dependent on the number of holes wanted done. If we do the whole block it is $325 if we do 4-6 holes you will be looking at $225 Front plate is tapped for the studs, studs are basically .5", material is precision ground chrome-moly, heat treated.

~S~

joeylyrech

iTrader: (11)

no they dont thread on the front iron(they are way bigger)they wont go in at all,let me get my digi caliper get some specs,i let you know guys

13BT_Starlet

iTrader: (2)

I am sure there are other method of doing it , but the most prescice is the cnc and another thing is who could afford the labor with all the time thats going to be involve with all the indicating . you could never compare your brane to a pc .

all the oversize stud have the larger thread so machining and tapping of the front steel is required .

bigdv519

iTrader: (3)

You are absolutely correct: I wouldn't compare my brain to any pc, especially any pc that can play giant floppy Oregon Trail.

As for the amount of time to indicate the 2 housing and 3 irons (1 flippped), that was less than 5 minutes each part. Intial setup took about 30 minutes. I guess my reason for arguement (if it is that) is that I used to be scared when folks told me it "had" to be done on a cnc, or it wouldn't be as precise. A manual lathe can be just as accurate as a cnc. The cnc starts to make its money from mass production. My machinist actually prefered to machine the 5 pieces on programable manual lathe WITH digital read out. I think total machine time was somewhere in the 45 min area, while total shop time (slacking off included) was about 4 hours.

Zero R: I was waiting to hear that. The heat treating is essential.

13BT_Starlet

iTrader: (2)

I find it hard to belive it took you that little of time , are you indicating all the steels and housing together as if they were stack or doing them individual ? I am by no means argueing , it that I have seen this done on a lathe and its alot of time consuming comoared to a cnc . If you dont mind Pm me some pics of the way you are talking about .

OK , so 45 min + 4 hrs slacking off = $ ?
What is your hourly shop rate ?

bigdv519

iTrader: (3)

https://www.rx7club.com/showthread.p...7154&highlight

I hope the link works, I'm on my phone.

I talked to my machinist (my brother) this morning, and he said that it took about 30 to 45 minutes to setup, then less than 5 minutes to indicate each part. He said that if I wouldn't have been there bothering him, he could probably finish in 3 to 4 hours.

As for shop rate, we didn't have one. The small shop does R&D work for Shell, and my brother made/shortened a few programs that turned out to be a very profitable favor, so the machine owner owed us one.

13BT_Starlet

iTrader: (2)

If this is what you are talking about this is called pinning , pinning and studing are two diffent thing even though it serve the same purpose and see why it took so little time to do it your machinist only did 4 .

Have your machinist stud a whole block or even every other hole and see how well it works out and by the way the equipment on the pic is not a lathe its called a brigdeport/milling machine my friend AKA engine builder has one and trsut me you the only way to do it on one of this machine is by stacking the engine and doing it as one whole piece and it can't be done due to the fact that its not tall enough from the head to the table . I'm by no means a Machinist but I have knowledgeand some expierience

bigdv519

iTrader: (3)

Yes I understand what pinning and studding are. I mistakenly began mentioning machining times for machining 4 holes per piece.

I'm no expert, but the way we machined the four holes is the same way we are going to machine the holes for the studs. And we are going to stud every hole. My machinist has already assured me there won't be any problem doing it this way.

Forgive me for saying lathe. I really don't know what I was thinking.

As for stacking, we considered it but, again, my machinist has assured me that machining the pieces individually will not be a problem.


I still stand that a cnc is not needed and indication times are not as long as some might say. I sat there and saw him indicate each piece in and it was very fast. Again, I want to stress that we have a digital readout display added on this mill. I guess the real test will be the ease of fitment once the motor is being put together. We shall see.

Zero R

iTrader: (1)

Stacking the whole assembly and drilling as one unit usually needs something the size of a radial drill. It can be done, we've done it. The issue becomes having the bit wander on you. There are ways around that, but to me CNC is easiest. If for any reason I have to replace a piece the new one goes right in every time. Very repeatable results.

13BT_Starlet

iTrader: (2)

More power to you and your machinist and goodluck on the studing !

Thank you on the point about the CNC .

bigdv519

iTrader: (3)

Zero R: If its not a big secret, what kind of clearances do you shoot for studs/pins holes? You can pm if you'd like. We went .004 +/- .0015 for added pin holes.