Author Topic: cdi with outside flywheel on rhs  (Read 1985 times)

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Offline jimg1au

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cdi with outside flywheel on rhs
« on: September 23, 2011, 02:33:36 pm »
looking for an ignition which is on the right hand side but must have outside flywheel.
its for my 1969 gp250 five montesa
thanks
jim

Offline Freakshow

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Re: cdi with outside flywheel on rhs
« Reply #1 on: September 23, 2011, 04:13:56 pm »
what rotation and why does it have to be a flywheel ? why not try a Dt2mx style button stator
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Offline jimg1au

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Re: cdi with outside flywheel on rhs
« Reply #2 on: September 23, 2011, 04:33:32 pm »
the old monty will fall apart with a small internal rotor vibration
jim

Offline Lozza

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Re: cdi with outside flywheel on rhs
« Reply #3 on: September 23, 2011, 05:48:21 pm »
Look toward the future Jim ;)
Jesus only loves two strokes

Offline jimg1au

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Re: cdi with outside flywheel on rhs
« Reply #4 on: September 23, 2011, 05:54:54 pm »
lozza what are they off

mx250

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Re: cdi with outside flywheel on rhs
« Reply #5 on: September 23, 2011, 06:12:31 pm »
the old monty will fall apart with a small internal rotor vibration
jim

I don't think that's a worry Jim. Heavy flywheel effect controls how quickly the crank pick up revs, how it delivers its power and how controllable it feels to the rider (even Rossi and Ducati have been playing with the flywheel weight in a pursuit to make the Duke more ride-able for Rossi's liking) . Motors with heavy flywheel are erroneously described as 'torquey'.

Vibes are caused mainly by the balance factor. Heavy flywheels can disguise balance issues but the lack of flywheel is not the cause. I'm sure Lozza can explain better and in more detail if need be.

I'm guessing but I think Lozza is suggesting a programmable ignition - right up your computer programmers alley I would have thought ;). If so it should be an interesting experiment.

If you want the new ignition and MX flywheel you could always add the Monty left side enduro weight. I'm not certain if it fits to the MX crank or if a new left side crank half is required.

Offline Lozza

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Re: cdi with outside flywheel on rhs
« Reply #6 on: September 23, 2011, 09:06:06 pm »
lozza what are they off

They are a universal programmable ignition. Note the centre of the flywheel has not been machined.Can run on left or right, 75mm dia 420g mass, self generating HV no battery required has 12V output.
Jesus only loves two strokes

Offline jimg1au

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Re: cdi with outside flywheel on rhs
« Reply #7 on: September 23, 2011, 11:23:01 pm »
lozza were can i get the info on it
 my motor is still in the usa and the seller(rebuilder wants to run and test the motor befor he sends it
jim

Offline Lozza

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Re: cdi with outside flywheel on rhs
« Reply #8 on: September 23, 2011, 11:51:38 pm »
How much do info you need? You bolt it on, wire it up, kick it in the guts perform a few tests and program away. The only variable and something that must be checked is, with the pick up on the outside of the rotor the unit needs 90-100mm in the ignition cavity to mount up.
Jesus only loves two strokes

Offline T250K

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Re: cdi with outside flywheel on rhs
« Reply #9 on: September 24, 2011, 10:31:37 am »
How many dollars Lozza, and where can we buy them ?  ;)

Offline firko

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Re: cdi with outside flywheel on rhs
« Reply #10 on: September 24, 2011, 10:41:05 am »
I've got one of Lozza's ignitions on the new RT1 motor destined for my Cheney. No...I haven't run it yet. ;)
'68 Yamaha DT1 enduro, '69 Yamaha 'DT1 from Hell' '69 DT1'Dunger from Hell, '69 Cheney Yamaha 360, 70 Maico 350 (2 off), '68 Hindall Ducati 250, Hindall RT2MX, Hindall YZ250a , Cycle Factory RT2MX flat tracker, Yamaha 1T250J, Maico 250 trials, '71, Boyd and Stellings TM400, Shell OW72,750 Yamaha

Offline Lozza

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Re: cdi with outside flywheel on rhs
« Reply #11 on: September 24, 2011, 10:57:31 am »
Depending on the exchange rate at the time I pay for them $500-550, I import them from the manufacturer.
Jesus only loves two strokes