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Author: Subject: Type 9 gearbox Speedo drive gear
westdown

posted on 27/11/20 at 06:52 PM Reply With Quote
Type 9 gearbox Speedo drive gear

Hi

Due to the speedo cable breaking in the drive gear I need to replace it. I have removed the old one after a lot of fiddling. Have got another one from a different box but it has a different number of teeth. Are the gears inter changeable despite the different number of teeth ??? They are both the same diameter.

Any info would be good.

Thanks

Dave

[Edited on 27/11/20 by westdown]

[Edited on 27/11/20 by westdown]

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roadrunner

posted on 27/11/20 at 07:04 PM Reply With Quote
I would give a bit more info on what type of gearbox you're using to be able people to reply.
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rusty nuts

posted on 27/11/20 at 07:06 PM Reply With Quote
First off , it might be a good idea to tell us what gearbox you have? If it is a Ford box they maybe identified by colour so you would need one the same unless your Speedo can be calibrated . A different number of teeth will definitely alter the speedo reading
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westdown

posted on 27/11/20 at 07:07 PM Reply With Quote
Type 9

Hi

Sorry have just added the Ford "Type 9"

Cheers

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Oddified

posted on 27/11/20 at 07:09 PM Reply With Quote
Many manufacturers use different coloured gears for different teeth to suit differing diff ratios/tyre sizes etc and most are interchangeable.

Which gearbox?

Edit....i'm slow at typing lol

[Edited on 27/11/20 by Oddified]

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westdown

posted on 27/11/20 at 07:10 PM Reply With Quote
Hi

Yes understand it will change the speedo, but no problem with that. It's more about if it will fit and run/mesh ok.

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rusty nuts

posted on 27/11/20 at 07:39 PM Reply With Quote
I believe but could be wrong , the drive gear that actually drives the speedo gear is the same on all type 9s?
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cliftyhanger

posted on 27/11/20 at 07:42 PM Reply With Quote
Yes, they swap. I managed to get my speedo within 1mph between speedo and satnag. At 116mph on the autobahn . (you can almost see the fuel gauge moving at that speed) all by swapping between the plastic drive.
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westdown

posted on 27/11/20 at 07:53 PM Reply With Quote
Hi

Many thanks. It sounds as if it will fit and mesh ok.

Yes I understand the gear inside the box is the same on all type 9 boxes. Which means all the different cable drive gears must mesh and drive ok.

Thinking about it some more I will put the old drive gear in to the other box and turn it by hand. I should then be able to see if it meshes and turns, with out jamming up.

Many thanks for all your answers.

Dave

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steve m

posted on 27/11/20 at 08:04 PM Reply With Quote
I dont know about the type9, but on the type 2 Ford gearbox the spiral drive on the output shafts were always the same, but the plastic speedo drives were not, there was at least two types, one Blue, the other Brown, and they defiantly had different amount of teeth on the cog

I presume, as there were about 3 different back axle ratios on different marks of escorts, this was done to keep the speedos calibrated the same

steve





Thats was probably spelt wrong, or had some grammer, that the "grammer police have to have a moan at




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Mr Whippy

posted on 28/11/20 at 02:19 PM Reply With Quote
Is the cable bent tightly at the gearbox? As that might have caused it to snap in the first place and if not sorted the next cable will just do the same.
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westdown

posted on 28/11/20 at 09:30 PM Reply With Quote
Hi

Yes it is a tight fit, but it has been good for 14 years.

The problem Iíve got now is getting the circling on. It very close to a chassis rail.

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