lacking speed, options?

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lacking speed, options?

Post  RobG on Wed Oct 28, 2015 9:53 am

To cut a long syory short, I have a luna/lui 50.

I have new gearbox and DRT close range gearbox running 15 sprocket (fitting a 13 as I type)Jockeys pull down chain guide and 76 chain.
Casa/parmakit 75,
New lui exhaust
15mm carb
3 plate clutch conversion
Sunny Stator and flywheel.

Starts easy and runs lovely but its horrible in the hills and I live in a hilly area.

I see Casa are going to make a clubman and I have a 19mm carb on its way from Jockeys.

Top speed on the flat is no problem but I need a little more grunt up hill. Just a tiny incline or wind and I think I can run faster.

Is that normal? If so, how can I get a little more power from it?

I don`t really want to go up in cc`s. 75cc smallframe vespas leave me for dust.

RobG

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Re: lacking speed, options?

Post  Thackers on Wed Oct 28, 2015 11:21 am

A few on here have this 75cc kit i'm sure someone will come along and help you Cool While your waiting do the lines along the inlet to cyl opening flow? i.e no steps blocking the petrol including the gasket, same with the exhaust side. Also check if the base gasket matches the crankcase and cyl openings another one to check is the squish between piston crown and cly head, it should be around 1mm clearance for best performance.
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Thackers

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Re: lacking speed, options?

Post  RobG on Wed Oct 28, 2015 11:30 am

I checked the ports and squish when I fit the kit but will have another look.

Thats annoying. Tried to fit my 13 tooth sprocket and the 76 chain is way too long whilst the 74 is a tad too short.

Thats my normal luck on this it seems.

Would be nice to here what the other 75 kit users are running.

RobG

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