[C320-list] Transmission Failure ?

[Kirk McCullough]

Shawn

I have the same arrangement as you do, Perkins, Kiwi and Hurth.  When i 
switched from the 3 blade fixed prop to the Kiwi, I found it put a much 
greater load on the engine in reverse as you noted. In forward, the Hurth 
began to slip after some 50 to 100 hous on the Kiwi. I do not know for sure 
if the Kiwi had anything to do with the slipping gearbox as it had over 2000 
hours at that time, but i suspect it did.

Anyway I found the price to repair the Hurth 50 was high so I decided to buy 
a new gearbox. ZF acquired Hurth so now I had the choice of a ZF-5 (old 
Hurth 50) or a ZF-10 (old Hurth 100). Since the clutch pack and most other 
components are much stronger in the ZF-10 I went with it. The Hurth 50 that 
Catalina coupled to the Perkins was not really a big enough unit. The old 
Hurth 100 now called the ZF 10 would have been a better choice, even as 
stated by the ZF regional mgr. in Seattle. The Hurth 50 is good up to about 
30 hp, the Hurth 100 is good up to 48 hp; much stronger.

If you need to repair your gearbox, definitely look into getting a new one 
instead.

How many hours do you have on the engine/gearbox?

Kirk
#124


----- Original Message ----- 
From: <bruceheyman at cox.net>
To: <C320-List at Catalina320.com>
Sent: Wednesday, October 01, 2008 7:11 PM
Subject: Re: [C320-list] Transmission Failure ?


> Shawn,
> I don't know anything about the Kiwi prop but it sounds like your 
> transmission is ill.  I can't imagine anything else in the drive train 
> that could stall the engine.
> Bruce
> Somerset 671 SoCal
> Sent via BlackBerry by AT&T
>
> -----Original Message-----
> From: "Shawn Maloney" <smaloney1 at cogeco.ca>
>
> Date: Wed, 1 Oct 2008 22:05:51
> To: <C320-List at Catalina320.com>
> Subject: Re: [C320-list] Transmission Failure ?
>
>
> Yes its good in forward and the shifting is not hard.
>
> -----Original Message-----
> From: c320-list-bounces at lists.catalina320.com
> [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of
> bruceheyman at cox.net
> Sent: Wednesday, October 01, 2008 9:30 PM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Transmission Failure ?
>
> Shawn,
> Are you saying that it runs just fine in forward?
> Bruce
> Somerset 671 SoCal
> ------Original Message------
> From: Shawn
> Sender: c320-list-bounces at lists.catalina320.com
> To: c320-list at lists.catalina320.com
> ReplyTo: C320-List at Catalina320.com
> Sent: Oct 1, 2008 18:17
> Subject: [C320-list] Transmission Failure ?
>
> Last week I noticed that the engine would stall out suddenly when I 
> shifted
> into reverse.  I tried increasing the RPM's and made sure there were no
> weeds wrapped on the prop but nothing worked.  I have a Perkins engine,
> Hurth gearbox and a Kiwi prop that loads up pretty good in reverse.  Any
> ideas?
>
> Shawn Maloney
> Chinook  #14
>
>
> Sent via BlackBerry by AT&T
>
>