250 2c

250 2c- the Wee-WeeVees

250 2c

Postby Hugo » 27 Oct 2016 17:47

I bought a 250 2c a couple of weeks back, I have covered around 200 miles on it and like it ! Very different to anything else I have ridden ,the only problem I have noticed is the sensitivity to to lines,tracks and patched up tarmac on the road, the tyres are Metzler's, is this normal with this bike? Any advice and info on the 250 welcome as I am new to Morini.
Hugo
 
Posts: 18
Joined: 18 Oct 2016 13:39

Re: 250 2c

Postby 72degrees » 27 Oct 2016 18:19

It has to be said that the Paioli forks and Sebac shocks on the 250 twin are a bit budget if you are used to Marzocchis. I currently have Marzocchi shocks from a 350 on the back of mine (and will have Konis on the project bike eventually). I had Konis from a GT550 Kwack (with suitably lighter springs) on the 375/2C at one time. The 350 shocks are longer so I needed to weld pads on the bottom of the centre stand so that the rear wheel would still be lifted off the ground. I suppose it must alter the handling a bit, and as I haven't let the forks through the yokes (D'oh brain fade I'd have to do it the opposite way , which would be a good trick ;) ) at all to match it must now be even 'sharper' but it suits me.

You do tend to skip and bounce across bumps but it usually holds its line OK. I have Pirellis on mine (City Demon on the back) so can't comment on the Metzelers but I have seen some mention of them not liking white lines even when the profile hasn't become worn.

The best mod on mine (apart from the 375 engine ;) ) is a Cibie light unit of the right diameter to fit a 250 that takes H4 bulbs (but I did a 12v conversion when I put the 350 engine in). You can get 6v 25/25w or 35/35w Bosch cap quartz halogen bulbs these days:

http://www.norbsa02.freeuk.com/goffybulbs.htm

I can provide a link to a PDF of an illustrated spares list for the 250 twin (early rounded side panels not angular bodywork, but the mechanicals are much the same) if you PM me.
User avatar
72degrees
 
Posts: 1278
Joined: 31 Aug 2007 21:24
Location: West Midlands

Re: 250 2c

Postby EVguru » 27 Oct 2016 19:05

I ran Metzler ME22s on mine, the narrow 2.75 and 3.00 sizes specified. Very nimble, but sure footed.

The original headlamp was OK, but you have to use the right bulb. Osram were fine, but others gave no beam pattern. The alternator is the same as a 12v bike, all you have to is upgrade the regulator, bulbs and battery. I think you should be able to convert the regulator too if you put the right value resistor in series with the sense line.
Paul Compton
http://www.morini-mania.co.uk
http://www.youtube.com/user/EVguru
EVguru
 
Posts: 1418
Joined: 01 Aug 2006 11:13
Location: Luton

Re: 250 2c

Postby Hugo » 27 Oct 2016 19:30

Thanks for the replies, mine is a1983, it is fitted with Hagon rear shocks, The lighting comments are useful but I don't ride at night! I shall no doubt return for more advice! Many thanks
Hugo
 
Posts: 18
Joined: 18 Oct 2016 13:39

Re: 250 2c

Postby EVguru » 27 Oct 2016 19:42

Try playing with your tyre pressures. Start high, even what might seem really high and work down.
Paul Compton
http://www.morini-mania.co.uk
http://www.youtube.com/user/EVguru
EVguru
 
Posts: 1418
Joined: 01 Aug 2006 11:13
Location: Luton

Re: 250 2c

Postby Hugo » 27 Oct 2016 20:35

Yes I thought that too, I put 26 psi in but will try lowering, ride is hard at this.
Hugo
 
Posts: 18
Joined: 18 Oct 2016 13:39

Re: 250 2c

Postby EVguru » 27 Oct 2016 20:46

Hmm. that sounds low to me. Have you checked the date code on the tyres?

You might want to check the forks aren't binding, the front and rear pre-load and that the Hagons aren't simply far too stiff.
Paul Compton
http://www.morini-mania.co.uk
http://www.youtube.com/user/EVguru
EVguru
 
Posts: 1418
Joined: 01 Aug 2006 11:13
Location: Luton

Re: 250 2c

Postby 72degrees » 27 Oct 2016 22:07

EVguru wrote:
The original headlamp was OK, but you have to use the right bulb. Osram were fine, but others gave no beam pattern. The alternator is the same as a 12v bike, all you have to is upgrade the regulator, bulbs and battery. I think you should be able to convert the regulator too if you put the right value resistor in series with the sense line.


Makes you wonder why Morini made it a 6v system. Another way of keeping the price down? The 12v battery I use is a bit of a tight squeeze in the battery box - can't remember which one exactly. You also have to get inventive if you want to fit a NLM ignition module and conventional coils, but it can be done, particularly if you ditch the toolbox.
User avatar
72degrees
 
Posts: 1278
Joined: 31 Aug 2007 21:24
Location: West Midlands

Re: 250 2c

Postby Hugo » 28 Oct 2016 08:19

What is the advantage of a nlm ignition system?
Hugo
 
Posts: 18
Joined: 18 Oct 2016 13:39

Re: 250 2c

Postby 72degrees » 28 Oct 2016 08:56

Hugo wrote:What is the advantage of a nlm ignition system?


In my experience, easier starting (with an OEM red pickup) and I reckon better running. I've never tried one on a 250 engine though. Probably no great advantage if your transducers are still in good condition but worth considering if they aren't. Given the location of the transducers on a 250, behind the side panel rather than under the tank, I didn't use the standard mounting arrangements for the NLM setup. I'm sure others more inventive than me could manage it but I made up an alloy plate bolted to the transducer mounts with the mounting plate for the coils bolted to that. I separately attached the CDI unit rubber mounting bracket to the frame top tube with big zip ties. I think NLM have changed the coils they use since then so it may be easier now. I tried their own pickup but found it needed a faster kick than I wanted. Might try one again on the hill climber eventually.
User avatar
72degrees
 
Posts: 1278
Joined: 31 Aug 2007 21:24
Location: West Midlands

Re: 250 2c

Postby EVguru » 28 Oct 2016 08:59

Hugo wrote:What is the advantage of a nlm ignition system?


It's not been sitting in damp sheds for 40 years!

It's basically a reworking of the original system. You can used their ignition box and coils with an original pickup, or their pickup with your ignition boxes, or use the full system.
Paul Compton
http://www.morini-mania.co.uk
http://www.youtube.com/user/EVguru
EVguru
 
Posts: 1418
Joined: 01 Aug 2006 11:13
Location: Luton

Re: 250 2c

Postby Hugo » 28 Oct 2016 17:36

Thanks, the bike starts well so no problem at the moment, which grade fork oil is recommended and the quantity?
Hugo
 
Posts: 18
Joined: 18 Oct 2016 13:39

Re: 250 2c

Postby EVguru » 28 Oct 2016 17:43

I recall 150cc.

As for grade, it depends on brand and riding style! The actual viscosities are all over the place.

Stick to one brand and probably start with something like 15 SAE.
Paul Compton
http://www.morini-mania.co.uk
http://www.youtube.com/user/EVguru
EVguru
 
Posts: 1418
Joined: 01 Aug 2006 11:13
Location: Luton

Re: 250 2c

Postby Ming » 28 Oct 2016 17:51

Hugo wrote:Thanks, the bike starts well so no problem at the moment, which grade fork oil is recommended and the quantity?

The handbook quotes 160g of Castrol TQF. If you take the sg of an average ATF as 0.869, that equates to 156cc per leg. I think ATF is around 10SAE. As Paul says, depends on brand, riding style and your weight.
User avatar
Ming
 
Posts: 498
Joined: 01 Aug 2014 16:32
Location: Central France

Re: 250 2c

Postby Ming » 29 Oct 2016 07:11

Ming wrote:The handbook quotes 160g of Castrol TQF. If you take the sg of an average ATF as 0.869, that equates to 156cc per leg. I think ATF is around 10SAE. As Paul says, depends on brand, riding style and your weight.

No - hang on a bit I think I got the maths wrong, if the sg is less than 1 it will need more ATF to make up the weight, which works out to 184cc per leg.
Is that right? :?
User avatar
Ming
 
Posts: 498
Joined: 01 Aug 2014 16:32
Location: Central France

Next

Return to 250 Vee

Who is online

Users browsing this forum: No registered users and 1 guest