simolini carter and scooter cranksaft

[00AndreTopic starterBerichten: 23]

hello 😀 l have a question

l talk about a normal 44mm stoke , and if it is to big and not fit the carter
will l put it intro a turning lathe and make it fit 🙂
l will coures remove the right site of the cranshaft

but the my big question is :
do the scooter crankshaft fit intro the bearing , in the carter ?
(simolini carter)

ty , André 🙂

[dieseltankBijdragerBerichten: 437]

I expect so, you might be on finding the right bearings

and ofcource, you will driving with a front vario of a scooter…?

[00AndreTopic starterBerichten: 23]

the simolini carter use 6202 bearing ,, and a scooter use 6204 … 😀

and yes coures 🙂

[00AndreTopic starterBerichten: 23]

l will put the carter intro a turning lathe and make it fit.. 🙂

[ArvidWDonateurBerichten: 6258]

I’m afraid it won’t work, the crankshaft of a scooter is wider than a vespa crankshaft.

The simonini carter has 2 sizes of bearings! One small one (6202) and one large one (XXXX)

l will put the carter intro a turning lathe and make it fit..

Then you are milling away the aluminium your bearings are housed in

Comparisson of width between honda NSR50 crankshaft and Simonini2007 crankshaft:

I think the NSR50 crankshaft has near identical dimensions as for example a minarelli horizontal crankshaft

AW50-4t | 13.13 | Gianelli Citypower | 3.2Nm@6000rpm | 3.0pk@6700rpm
Home made engine dyno

[00AndreTopic starterBerichten: 23]

what do you meen with that ?

the carter is in aluminium

[ArvidWDonateurBerichten: 6258]

Width : Not die diameter of the crank but the distance between the insides of the bearings.

AW50-4t | 13.13 | Gianelli Citypower | 3.2Nm@6000rpm | 3.0pk@6700rpm
Home made engine dyno

[00AndreTopic starterBerichten: 23]

hmm l will cut the right site of the cranshaft off (ignition site)
do you understand 🙂 ?

but it will not work `?

[ArvidWDonateurBerichten: 6258]

You don’t understand me, i’m talking about the part of the crankshaft that is actually inside the crankcase.

AW50-4t | 13.13 | Gianelli Citypower | 3.2Nm@6000rpm | 3.0pk@6700rpm
Home made engine dyno

[00AndreTopic starterBerichten: 23]

yes l don´t understand you .. :S

but where can l an crankshaft Simonini race 44 ?
or somthing els that fit a simolini carter , with the stok 44 ?

[ArvidWDonateurBerichten: 6258]

This is the problem: I am pretty cerain that the red width is larger than the green width

Milling the crank down is with most cranks very difficult because they are hardned. Milling the engine is no option because then there is to little space te mount the bearings.

I’ve had a 44stroke simo crankshaft, it was a simo crankshaft made for the old simo engine. This crankshaft is also available in 46mm stroke. All simonini crankshafs for vespa are 74mm in diameter.

The left one = simo 44 strok, The right one = malossi 43mm stroke (and 70mm in diameter)

AW50-4t | 13.13 | Gianelli Citypower | 3.2Nm@6000rpm | 3.0pk@6700rpm
Home made engine dyno

[00AndreTopic starterBerichten: 23]

hmm ok 🙂 do you know where l can buy an old simo crank ?

waht about this cranksaft: http://www.speedline.dk/da/scooter/krumtap-motoforce-standard-oe10mm-mf30-19400/

its not so wide 🙂

[virgilDonateurBerichten: 1041]

Hi,

I read the mail you send me on youtube.

I think you have to look after a crank that is small but even strong.

Next i have seen a vidio on youtube of a Italian man that have made a scoot crank in hit reed valve engine.

If you ask me, it is posible but you have to find of a cnc machine or a crank that have te good mesurements.

The bearings i wood make the crank a litle smaller so the original will fith in it.

Think logic.

Greetz.

[00AndreTopic starterBerichten: 23]

ok thanks :=)

[Gebruiker]

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