Another Rotax 122/123 question

[Dannylewis27]

Hi guys

I did have a quick look before I posted this but I don't have time to troll trough everyone's forums

I have a RS125 98 so it's a 123. I have broke it down and all I have left is Swing arm, shocks clocks and radiator etc

I was wondering if I bought a 122 frame would my swing arm fit?

What are the main differences to the frames??

Thanks guys
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Derbi senda R, 03
Aprilia RS 125 Extrema, 98

[Kickstart]

Hi

Fairly sure that there is no difference at the back of the engine, so should mean the swinging arms are interchangeable.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[Dannylewis27]

Thanks Keith

You always have the answer!
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Derbi senda R, 03
Aprilia RS 125 Extrema, 98

[Dannylewis27]

Okay Keith I got one for you
If I build this 122 (which I am)
I have a 2000 frame, but I really like the 07 seat and panels
Is it possible to put the 07 subframe on with te rear panels?
Or even any if the front fairings?
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Derbi senda R, 03
Aprilia RS 125 Extrema, 98

[Kickstart]

Hi

I honestly do not know.

Logically I would say that modifying the tooling for the cast frame is expensive compared to any changes to a jig for the subframe. Hence I would suspect that the main frame didn't change.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[Dannylewis27]

What about te starter motor
I k ow the bendix won't fit as its a different flywheel but what about the actual motor itself??
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Derbi senda R, 03
Aprilia RS 125 Extrema, 98

[Kickstart]

Hi

Again, afraid I don't know. Not had a 122 engined bike to be honest.

However the part numbers are different, and the prices of the 122 and 123 starter motors are significantly different.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[Dannylewis27]

Thanks keith.
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Derbi senda R, 03
Aprilia RS 125 Extrema, 98