looking for any info on engine type ? i know originally it had a minarelli engine ! can i fit a 80cc air cooled mono engine ( with mounting mods ) or any other suggestions to get this back to where it should be

thanks in advance steve

The rear mounting points are different, the mono swing arm spindel runs through the engine ( I hope you understand what I mean )

So the engine is to long or perhaps try to modify a mono swing arm in combination with the mono engine.....

You can also put a little Honda engine in the frame....

thanks for the reply i understand about the mono engine ! would a swing arm off another fantic twinshock fit ? ( one with a fantic engine ) if not which honda engine would you use ?

The 50/80 frame is smaller then the other twinshock fantics, so no other swingarm will fit.

All small honda engines have nearly the same dimensions, easiest way will a TL 125, but also a XL185 is possible, take what you can get for little money

If you want to stay with a low capacity 2 stroke engine a 50,80 and 125 Sachs engine will nearly fit plug and play.

Did a similar conversion on an aprilia 50 trials a few years back and installed honda 125 ohc. All of the engine mounts had to be remade biggest problem was the height of the intake on the honda engine no room for the carb.

Remember a lot of the cheap Chinese bikes have exact copies of honda engines and can be picked up for pennies.

Thanks for the advice would prefer genuine honda engine but will see what I can get ! Will keep updating

Remember a lot of the cheap Chinese bikes have exact copies of honda engines and can be picked up for pennies.

I have some experience with these cheap Chinese Honda copy engines and they are truly worth pennies.Used genuine Honda 125 engines are cheap and common both in the u.k. and north America.

Found a xr125 engine is that the same as the tl engine ?

Never heard of a XR125 if it is a XL125 it will work fine. The 1979 and later XL125 is much better than the 1978 and earlier, has stronger k/s gears, electronic ignition, bigger valves, improved cam chain tensioner and a six speed transmission. The main difference between a TL125 engine is the first three gears are very close on the TL , and compression ratio 8.1 on TL, 9.1 on XL. An XL engine will work great, transmission ratios in the XL box are not an issue when the overall gearing is lowered for trials use.

XR is the enduro version and will be different to the TL but certainly won't be a ball of fire so it may be suitable for your needs. No doubt somebody will know the prime areas of difference.

Now you guys got me thinking about the FM 330 50cc in my shop that needs a crank for the little minarelli ... I'm thinking a xr/sl 100 engine might just be the bomb for the little bike ... 'cause the chassis is so fun to toss about ...

Glenn

Hi Glenn I bought the frame off someone who bought a house and it was in the cellar thinking I would pick up a engine to fit and get it going but searching about realised its not a easy job ! Honda engine seems the way forward although all my bikes have been 2 strokes so know nothing about 4 strokes . I'm going to look at a engine on Sunday and I will post a picture as to size mountings etc once ive made any alterations then will get the frame powder coated ! Do u recommend any other frame mods before getting it coated ?