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Bob,

You are right. There is a two speed gear on the motor drive. i should have sent a photo of this in the earlier set. Photo of the motor drive gear enclosed.


:U



Greg

Bob,

Here is a photo of the drive arrangement inside the column and a photo of the speed table inside the door (sorry about the flash). The spped table is upside down. I re-oriented it in Picasa,...

Hi Ew,

I decided to do what you recommended today and it has resolved the problem. I put bearing blue on the drive gear and saw where the gear was interfering with the housing. I used the die...

To answer Bob and Ew's questions below:

Bob, I didn't fit the vertical head before I refurbished the spindle so I don't know if there was interference beforehand. That would have been nice to...

Bob,

Thanks for that. https://www.woodworkforums.com/images/icons/icon10.pngI was trying to rotate them inside the post and I couldn't see how to do it.

Greg

Bob,

No problems with rotating the images. I have not worked out how to do it. The images I have attached to this post are also not upright. Let me know how to do it and I will get it right next...

I am the owner of Hercus Model O serial number OLM670. A couple of years ago, I posted problems I was having with a noisy spindle on my mill. That was fixed but then I experienced a lack of torque...

Hi Mal,

Thanks for this advice. I have actuallly reassembled the machine with a v belt as you suggest. I got some advice from Anorak Bob some time ago that link belts are not suitable so I took...

Yes the belts are properly tensioned and are not slipping. I spoke to the electrician who installed the FM50 today and he said he would come and have a look. Before he does that, he suggested I...

You are right,. I cannot hold it. Wjhat I meant to say is that if I run it up to speed, I can put my hand around the helical gear on the end of the spindle and I can feel it slowing down a little as...

Here is a photo of the spindle after the machinist had 'cleaned it up'. I notice that the photos I tried to attach in an earlier post did not attach.

Greg

My answers to the various questions in this post are as follows:

Pipeclay. Yes I can turn the helical drive gear by hand in the vertical head. But it is a bit stiff. It feels to me like it has...

I have received the spindle back from the machinist and have now installed the new spindle complete with bushed cone pulley back into the mill. The spindle was cleaned up and the cone pulley was...

Hi Bruce,

Based on the advice from Bob earlier in this thread, it seems your machine is somewhere between 1972 and 1986. I guess I was lucky that I was only the second owner of my machine and the...

I found out today that my mill was purchased by James Nash State High School in Gympie in 1993. I assume it was new at this time. As noted before it is OLM 670.

Greg:)

Hi All,

This has been a useful discussion for me. I own the Model O with the worn spindle. Pipeclay's estimate for a new spindle is helpful to have in case I have to go dolwn this path. Ar the...

The information on manufacture date of Hercus Model Os is interesting Bob. Since mine is a 3 slotter (OLM 670), I now know that it is at least post 1986.

I am still waiting on the machinist to...

Bruce, thanks for your research on the screw. I am impessed! It. makes sense that under normal operation, it. stays put and you oil the spindle via the oil nipple near the bull gear. Also Bob's...

As noted in an earlier post, my cone pulley had no oil screw fitted to it. So there was no way of retaining oil in the pulley, even oil had been used! What I am not sure of therefore, is what the...

OK guys,

Looks like I neeed to put a screw into the pulley when I put it back together! And fill it with oil.

Greg

Bob,

There are two entry points for lubricant on the cone pulley I have. There is an oil nipple on the bull gear end and there is a threaded hole in the middle of the cone pulley. On my machine...

Bruce,

I started to wonder whether I would be chasing my tail by going down the modification path, so I am hoping that putting a refurbished cone pulley onto the existing spindle will work out. As...

Hi Pipeclay,

Yes the spindle was damaged over the full length that the spindle operates over. He will cut the same type of grooves in the bronze bushings that are in the standard pulley.

I...

Bruce,

Thanks for your advice about the v belt. I actually took Bob's advice prior to seeing your reply where he mentioned a Gates belt. As stated in an earlier post, I took a Gates belt off the...

Bob,

Thanks for telling me your experience with link belts. Doesn't sound like a good one! Your comment is interesting about using a Gates belt. The machine has a Gates Hi Power II V30 belt on it...

Thanks Bruce. What you say makes sense. I will let you know how things go with the spindle mod.

Greg:)

Does anybody know whether there are any issues with using a T belt in the Model O? I have seen some posts on the net which indicate that there are issues with these belts wearing in and requiring...

Bruce,

This has been a real learning experience for me and it is clear that proper lubrication is so important in this area of the machine.

Bob,

I will post the photos on the forum over the...

Bob,
Thanks for this alternative suggestion. However, I believe it is too late. It is good to know of this source of Hercus parts.

I guess that one of the major factors making the solution...

Bob,
I took the spindle assembly out today and found that there was significant wear and galling to the spindle and the cone pulley. The spindle measured 41.21mm OD and the pulley measured 41.68...

Bob,

I forgot to mention tha the noise is slightly less when the back gear is engaged. It could have something to do with the lower speed though. Not sure.

I will check the countershaft...

Bob,

Yes I understand what you did and that seems to be a good way to reduce the force of the imact on the bearings, while increasing the overall force on the arbor. I will give that a go. Thanks...

Thanks Bob and Bruce,

I have been able to remove the collet adapter. I just needed to be less gentle! I still haven't been able to move the arbor but at least I know now that it will move...

Hi All,

I am a new member with a newly puchased Model O (OLM-670) (see photo). I got it from a school in Queensland and it is in very original condition. I look forward to may happy years of...