Derbi Senda SM 50

[2012marcusbro...]

Hi i have a Derbi Senda SM 50 and wondering if anyone can help i want to know if a derbi senda 125 engine would bolt straight in hassle free thanks
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marcus

[Tarmacsurfer]

Why bother? Just fit a big bore kit and lock up clutch to deal with the extra power then get a silicone plug lead and non-ballast coil, that will match most 125s and have the advantage of being lighter than a 125 engine so you'll have a better power to weight ratio.

Might need to consider adjusting the gearing though as acceleration would be a bit harsh compared to a standard machine, wheelying is one thing but flipping a bike is seriously painful.
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I'm immortal. Well, so far.

[2012marcusbro...]

well my 50 engine is f**ked would you recommend an engine re-build and a 70 kit then ?
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marcus

[2012marcusbro...]

and what do you mean by lock up the clutch ?
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marcus

[Hobgoblin]

If its fucked definately go for the 70 kit and do all of the above. Dont forget to wind up the bow thruster though so it can reach full potential of arm pulling power!
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Plodding along on my CG

[_Troy_]

Flipping it? Arm pulling power? It's a 50 with a 70 kit we're talking about, right?

Fit whatever is easiest, both financially and to your ability. Neither will set the world on fire, but I imagine the top end of the 125 could be beneficial in some situations?
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Current bike: ZX6R J1
Previous bikes: CLR 125 | GS500 | ZX6R G2 | SV650

[reed]

The 125 engine is a 4 stroke, not sure if that will cause you any problems
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Generic XOR 50, Gilera SMT 50, GSXR 400 GK73A, Ducati Monster 600, Honda Hornet 600.
Sold. Stolen. Written off. Sold. Current.

[2012marcusbro...]

so are you saying a big bore would be faster than a 125 ????
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marcus

[_Troy_]

How long are you keeping it for? Most people seem to spend so much money trying to improve their first bike. But at the end of the day, it won't be anything close to the speed of a big bike, and is armed with awful L plates.

What I'm saying is you'll regret spending so much in a couple years time, so that would influence my decision entirely. But then again, that's hindsight I guess.
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Current bike: ZX6R J1
Previous bikes: CLR 125 | GS500 | ZX6R G2 | SV650

[2012marcusbro...]

wel iv had it 4 years its a 2004 and its been off the road for 2yr and you saying about a bike bike well one of my mates was saying he noes someone that put a cr 500 engine in one
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marcus

[_Troy_]

[Pol Anorl]

A cr500 engine would go in but would be a bastard to do plus 500cc engine 50cc frame..

Put a cr80 engine in it or...
Just pass your test get a different bike.
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GOOD GAME BODYGUARD: https://i.imgur.com/8WePGgf.jpg
20:30:37 Pyro.: I don't sort of like men, I take every advantage to choke on dick.
Jewlio Iglesias: You live in Liverpool - Chances are, the front door has already been kicked off the hinges

[2012marcusbro...]

so what would you say would be the best option its been sat for ages with out a cylinder head on so maybe water in the bottom end, it needs a cylinder head, gaskets, clutch plates and maybe a few more tweeks
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marcus

[2012marcusbro...]

Hahadumbarse would a cr 80 engine bolt straight in ??
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marcus

[_Troy_]

I'd say you need to do some research and work out how much all of this is gonna cost. Then if that's going to go way above what the bike is worth, just break it for bits and move on.
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Current bike: ZX6R J1
Previous bikes: CLR 125 | GS500 | ZX6R G2 | SV650

[2012marcusbro...]

this is what someone else said to me but where am i going to find the answers thats why i registered to this site
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marcus

[Matt94]

get an 80 kit
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current; beemer 5 series!

[bikertomm]

Probably better off getting a 70 / 80 kit for it rather than a 125 engine.

Be quicker than the 125 if the 125 is a 4 stroke engine..

and probably cheaper.


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07' Honda Hornet now full powaah! My guide on performing an oil change!