Author Topic: Holt 75 from Germany  (Read 14184 times)

Offline michelko

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Re: Holt 75 from Germany
« Reply #45 on: October 01, 2022, 05:55:21 PM »
Your gear train looks great, Michael!   :ThumbsUp: :popcorn:

I assume the clamps on the mill are to keep the spindle from turning during the broaching operation?  Interesting use of a mill!

Kim

Yes i was a liitle lazy and did it the Quick and dirty way. Some day i will build a clamp for the spindle, ...maybe ;D

Offline Admiral_dk

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Re: Holt 75 from Germany
« Reply #46 on: October 01, 2022, 07:59:00 PM »
Always great to see and feel it all go round and round, up and down as it should  :praise2:   :cheers:

I haven't seen broaching done on a Mill before - but as some here are doing the similar thing with Drill-Presses and Lathes - why not the Mill  ;D  and the result speaks for itself  :ThumbsUp:

Per

Offline michelko

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Re: Holt 75 from Germany
« Reply #47 on: October 04, 2022, 10:38:18 AM »
Hi
did the rockers yesterday. The body is milled from an round stock of steel. The round part with the thread is silversoldered to the main part.

I decided to go this way instead of the adjustable pushrod.
The bore will get a brass/bronce bushing.

Still have to clean them.

Regards Michael

Offline Roger B

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Re: Holt 75 from Germany
« Reply #48 on: October 15, 2022, 08:00:35 AM »
That's a nice set of rockers  :praise2:  I like the use of the CNC mill for broaching the keyway  :ThumbsUp:  :ThumbsUp: I haven't seen that before.
Best regards

Roger

Offline gbritnell

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Re: Holt 75 from Germany
« Reply #49 on: October 15, 2022, 12:02:41 PM »
Still following along.  Nice work on the rockers!
Talent unshared is talent wasted.

Offline michelko

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Re: Holt 75 from Germany
« Reply #50 on: January 31, 2023, 08:16:12 AM »
Hi
just found some time to make the gearhousing.
Came out nice.
Next will be the cover.

Greets Michael

Offline Admiral_dk

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Re: Holt 75 from Germany
« Reply #51 on: January 31, 2023, 10:50:21 AM »
Good to see progress and I can see why you are very happy with the latests parts  :ThumbsUp:

Per          :cheers:

Offline RReid

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Re: Holt 75 from Germany
« Reply #52 on: January 31, 2023, 03:16:51 PM »
That gear housing does look very nice indeed! :ThumbsUp:

The Bugatti engine hiding under the towel must be the same one as in your avatar? Did you do a thread on that one also? (edit) Found it.
« Last Edit: January 31, 2023, 04:00:42 PM by RReid »
Regards,
Ron

Offline michelko

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Re: Holt 75 from Germany
« Reply #53 on: February 06, 2023, 11:30:12 AM »
Hi guys and thanks for your replies.
Yesterday i made the gearbox cover.
I changed the designe a little bit so i could use lipp-rings as shaft sealing to avoid excessive oil loss.
Used tape and superglue to hold the workpiece on the table.
Worked realy nice.
Just had to sand the mill marks away.

Regards Michael


Offline Vixen

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Re: Holt 75 from Germany
« Reply #54 on: February 06, 2023, 12:34:02 PM »
......
Yesterday i made the gearbox cover.
.....
Used tape and superglue to hold the workpiece on the table.
Worked realy nice.
.......

Regards Michael

Another fine piece of metal sculpture. Nice work. :ThumbsUp: :ThumbsUp: :ThumbsUp:

I am surprised tape and superglue was enough to hold the workpiece. It must depend on having a large glued area.

Mike
It is the journey that matters, not the destination

Sometimes, it can be a long and winding road

Offline michelko

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Re: Holt 75 from Germany
« Reply #55 on: February 06, 2023, 12:38:53 PM »
Yes its amazing. Used this method also for the side plates on the Bugatti Build with great success.

Regards Michael

Online Kim

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Re: Holt 75 from Germany
« Reply #56 on: February 06, 2023, 05:27:34 PM »
I've had excellent success using double sticky tape to hold two pieces together that need to be milled/drilled identically, and it holds pieces surprisingly well. But as you say, it is based on the area covered by the tape.  If it's a very small piece with little surface area, it doesn't work as well.

Michael, when you say tape and superglue, are you using single-sided tape, so the adhesive of the tape holds one side, and superglue holds the tape to the other side?  Or something else?

Thanks,
Kim

Offline michelko

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Re: Holt 75 from Germany
« Reply #57 on: February 06, 2023, 06:59:24 PM »
Hi kim i used a kind of masking tape.

Online Kim

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Re: Holt 75 from Germany
« Reply #58 on: February 06, 2023, 10:58:11 PM »
Hi kim i used a kind of masking tape.
Single-sided masking tape? Or double-sided?

And where/how did you use the superglue?

Kim

Offline Dave Otto

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Re: Holt 75 from Germany
« Reply #59 on: February 07, 2023, 01:15:57 AM »
Hi kim i used a kind of masking tape.
Single-sided masking tape? Or double-sided?

And where/how did you use the superglue?

Kim

Hi Kim

Have a look here.
<a href="https://www.youtube.com/watch?v=e-coDYZCmEw" target="_blank">http://www.youtube.com/watch?v=e-coDYZCmEw</a>

Dave

 

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