OP
UTC

Lurker
Vespa P200
Joined: UTC
Posts: 3
Location: UK
 
Lurker
Vespa P200
Joined: UTC
Posts: 3
Location: UK
UTC quote
Anyone tried the BENELLI 5 speed Gearbox Kit for large frames?
UTC

Jet Eye Master
PX221 MHR, O tuned PX200, PX125 and some motorbikes
Joined: UTC
Posts: 4601
Location: London UK
 
Jet Eye Master
PX221 MHR, O tuned PX200, PX125 and some motorbikes
Joined: UTC
Posts: 4601
Location: London UK
UTC quote
PX cruciforms wear out quickly enough, without making them any thinner.
Can buy a lot of extra torque and power to pull 4 gears faster, for less money.
OP
UTC

Lurker
Vespa P200
Joined: UTC
Posts: 3
Location: UK
 
Lurker
Vespa P200
Joined: UTC
Posts: 3
Location: UK
UTC quote
But if you want to run higher speeds with lower rpm it could be the way to go?

They are expensive, so Just wondered if anyone had taken the plunge.
UTC

Jet Eye Master
PX221 MHR, O tuned PX200, PX125 and some motorbikes
Joined: UTC
Posts: 4601
Location: London UK
 
Jet Eye Master
PX221 MHR, O tuned PX200, PX125 and some motorbikes
Joined: UTC
Posts: 4601
Location: London UK
UTC quote
AndyPX wrote:
But if you want to run higher speeds with lower rpm it could be the way to go?

They are expensive, so Just wondered if anyone had taken the plunge.
It won't do what you think. If your power doesn't match your gearing, it can be fixed within 4 gears.
5 Gears on a PX, is for very high performance cylinders with narrow powerbands. And riders who ride very little, with money to waste.
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parallelogramerist
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Posts: 5252
 
parallelogramerist
Joined: UTC
Posts: 5252
UTC quote
AndyPX wrote:
But if you want to run higher speeds with lower rpm it could be the way to go?

They are expensive, so Just wondered if anyone had taken the plunge.
5 speed transmissions doesn't automatically mean that it gives you an overdrive gear. Most of them are designed to have the same top gear ratio as a wider ratio 4 speed transmission, but what it's designed to do is give you a close ratio transmission in order to keep you in the power band. And usually when you do that, you can kinda upgear the clutch tooth in 5 speed transmission a little bit in order to lower your rpm a smidge.

All that is NOT worth it in a vespa! The transmission is not strong enough! If you have a high torque engine build, you're better off installing a 36t short 4 gear and a 24 tooth clutch.
OP
UTC

Lurker
Vespa P200
Joined: UTC
Posts: 3
Location: UK
 
Lurker
Vespa P200
Joined: UTC
Posts: 3
Location: UK
UTC quote
Unless I misunderstood a 24/65 with 36 tooth (T5) will be shorter gearing than 23/65 with 35 tooth standard setup for a P200.

I'm looking to reduce my current 80mph 8000+ rpm by at least 1000 rpm and not lose too much in acceleration.
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