Stalker crankshaft

Hi all was wondering if someone could tell me the dimensions of the standard crank for my stalker and a recommendation for a crank to run with a polini 70 kit as I can't find a polini one for my price range?? I need new bearings too

 

I think standard crankshafts are usually a 10 mm , Also what polini kit are you using because if its a cast iron sport one there is no point in fitting a uprated crankshaft unless the one in your engine is already knackered , also try pmtuning.co.uk or pedparts.co.uk both sell uprated cranks and bearing & seals relatively cheaply . hope this helps

 

I'm getting a polini sport 70 an its making some funny noises like the main end bearings are going so you reckon any crank would be fine as its not a race cylinder ?

 

what kind of noise is it mate like a banging and rumbling noise ? if so that's your main bearings , and if you are already rebuilding the bottom end you can pick a up a race crank and the bearings and seals all in for about £100-150 quid depending on what make you want , but on my previous scooter i ran the same kit but liquid cooled with my standard crank and it ran fine . hope this helps

 

Yeah when I 1st start it its rumbling and making a kind of woh woh woh noise but it goes away after a little while I'm not gunna go too mad as I'm a bit tight on money as it is lol I'm gunna take it apart at the weekend and inspect the crank

 

yh mate , i have got 2 links for you here for a cheap after market crank and uprated seals and bearings hope these help you out

http://www.pedparts.co.uk/product/442/piaggio-tnt-race-crank

http://www.pedparts.co.uk/product/885/stage6-c4-crankshaft-bearings-seal-kit--piaggio

 

yeah thanks alot man ill defo have to sort something also what exhaust did you use with your polini 70 kit ?

 

your welcome mate , and i used a arrow extreme pipe at the time and it was on a aerox 50 or though it was a good exhaust it could of performed better , the yasuni z and the yasuni r are good exhausts so i hear

 

Yeah I have seen that pretty much every 70 has one just wanted to be different and something I could pick up for cheap I have a stage 6 in the garden I may use that

 

you could try a pm tuning 360 pipe or the stage 6 sports pro replica just don't use a high revving exhaust because the cast iron sport 70 kits produces most of there power low end and mid range

 

GOOD NEWS I have sold my phone so will be ordering parts this week hopefully here next week

 

if you order off pedparts mate it should be next day delivery , good luck with your scooter hope you fix it keep me posted

 

Yeah certainly will and hopefully get some pics up of the build if the crank is bad pedparts ATM don't have polini kit in stock but upon sending this reply they have messaged me back so ill see what they say thanks for your help so far

 

yeh sounds great buddy , they have the malossi cast iron in stock mate i had a look just that is more or less the same the has the polini

 

Yeah pedparts did ask what bike I've got so I think they are ordering one I would prefer to keep everything polini near enough as my bike is polini colours just me being picky

 

lol yh i was like that when i built my old aerox 50 , polini 70 cc cast iron , polini reed block , polini variator and belt , but i had a mallosi fly clutch with yellow springs and a polini white contra spring has for the carb a i had a ysn 17.5mm think i was running a 96 main jet my exhaust was a arrow extreme also installed a full circle tnt race crank and stage 6 c4 bearings and seals had great low end and mid range acceleration and about a extra 5 mph top end speed but it was worth the grin factor more than anything but cost me a fortune lol

 

Yeah it's not cheap but its worth the smiles I'm gunna be getting polini belt polini open filter polini clutch polini hi speed variator could you tell me the difference between the different spring colours ?

 

the clutch springs allow the clutch to engage at different rpm's same with the torque spring , stiffer the springs the later the clutch will engage i think mine were 1500 rpm springs in my clutch and the torque spring was just a bit stiffer than standard .

 

Which colour is the stiffest and what the least ? It's all the colours I don't understand lol

 

my set up on my current aerox is a white torque spring , pm tuning clutch with blue springs think there either 1000 - 1500 rpm springs standard variator with motoforce 4 gr rollers and a endy expansion chamber and a upjetted carb to a 92 with standard air box with a stage 6 filter element with the snorkel removed , has great accelleration and a 55 mph top speed great little run around