HP97 printer gear replacement

[Hans-Peter]

After a long search, I found a supplier for the replacement of the rubber gear in Germany.
The bore I had to increase from 2mm to 2.38mm and with some sandpaper I had to reduce the thickness by 0.1mm. But now the brass gear runs perfectly.

I have the running surfaces with little oil. Nevertheless, the printer makes noise as a saw.

Now the supply for the European HP97 printers is ensured :-)

http://www.modellbauershop.de/zahnraeder...3-30-z.php
Produkt-ID: 390760
Price €11,25

Hans-Peter

[Jlouis]

Thanks Han,

I'm looking for this gear for almost a year!

Cheers!

[Jlouis]

By the way, you mentioned "european HP 97".

Are there diferences in the gear measures between the 97's?

TIA

[Hans-Peter]

Not only for the European also the other Countries who would be delivered from the company.
In the other case I will make a collective order for overseas HP97, if the delivery should not go.

I think Geoff was already in a forum in the search for the gears and he wanted about 40 pieces, if I remember correctly.

HP ;-)

[bernouilli92]

This gear is a better replacement:
http://www.modellbauershop.de/zahnraeder...30-z-1.php

It's cheaper and you don't need to reduce the thickness. But you still have to widen the hole.

There has been a post about it:
http://www.hpmuseum.org/forum/thread-601...l#pid53789

[Tom V]

Hi folks, hello Hans-Peter,

thanks for this valuable information!
Today I purchased new brass gears from the Modellbauershop (now it's https://www.ghw-modellbau.de/)

I hope I can finish the HP97 restoration next week

regards from Muelheim/Ruhr Germany
Thomas

[Jlouis]

(08-21-2018 05:25 PM)Tom V Wrote:  Hi folks, hello Hans-Peter,

thanks for this valuable information!
Today I purchased new brass gears from the Modellbauershop (now it's https://www.ghw-modellbau.de/)

I hope I can finish the HP97 restoration next week

regards from Muelheim/Ruhr Germany
Thomas

Hi Thomas,

Please tell us when you finish. I have not restored mine yet and if the gears you bought are ok, I will buy them too.

Cheers

[Hans-Peter]

I can confirm that this gear fits perfectly and can easily be taken as a replacement.
The new gear will probably last longer than the rest of the printer.

Hans-Peter

   

[Tom V]

Hi folks,

done.... printer works perfect!

I purchased from "GHW Modellbauversand" this part:

"Stirnrad Mod. 0,3 Messing - 30 Z"
Part number #753030
each 3,15 EUR

https://ghw-modellbau.de/product_info.ph...anguage=en

The gear fits perfect, only the hole is to small
I drilled the hole to 2,4mm (we have a lathe at work)
no further modifications required!

thanks to the forum for the great tip!!!