The Necessity of the SPACER - CLUTCH LOCATION

Hal

Hal

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Hello everyone,

I'm currently building a Featherbed race bike and plan to install a TTI gearbox and Steve Maney's belt drive kit.

My question is: would it be problematic not to install the SPACER - CLUTCH LOCATION (part-no: 06.0747) on the back of the clutch basket?
When trying to align the belt, installing the spacer would push the basket significantly outward. Unfortunately, the gearbox itself doesn't have any clearance to move it left or right.
 

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Hal said:
Hello everyone,

I'm currently building a Featherbed race bike and plan to install a TTI gearbox and Steve Maney's belt drive kit.

My question is: would it be problematic not to install the SPACER - CLUTCH LOCATION (part-no: 06.0747) on the back of the clutch basket?
When trying to align the belt, installing the spacer would push the basket significantly outward. Unfortunately, the gearbox itself doesn't have any clearance to move it left or right.
Click to expand...


Mick Hemmings did a centre for Commando clutches on a non commando mainshaft with a hardened washer on the outer end, so it bolted up like a Manx/Dommi clutch

I'm pretty sure I still have one that I never used, although RGM also have some if you can get through to them

www.rgmnorton.co.uk

COMMANDO CLUTCH CENTRE FOR PRE COMMANDO MAINSHAFT, ALLOY

www.rgmnorton.co.uk

That way, you don't need the spacer behind the clutch
 
Thanks for the info.

The TTI shaft seems designed to work without spacers, so I'll try assembling the clutch without them.
 
Hal said:
The TTI shaft seems designed to work without spacers, so I'll try assembling the clutch without them.
Click to expand...
Have you tried to query TTI about this? The mainshaft's end does look similar to the AMC shaft. In a discussion with Bruce, he suggested fitting a hardened steel washer.
This can be sized so as to align the clutch basket perfectly. More important for a chain drive than for a belt drive, I assume.

- Knut
 
Last edited:
Hal said:
I contacted tti.

As expected, the spacer is optional, and it seems you can simply insert the clutch basket onto the shaft.

Thank you all.
Click to expand...
I’m running without any spacer on 3 bikes currently, all without issue.
 

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