new rs50, new project ;)

[Mr G]

Such a shame as to what happened to the blue one matey, that was such a lovely looking bike! Still this new one's going to be a beast, will be nice to see it once it's all finished up and make sure you get that video.

[ryanperkins]

i know cheers man!
i bloody hope so and i will do, hopefully this will still crack 75mph

[Glen1990]

and crack the crank

[chrism15]

be interesting to test how much a STOCK crank and bearings can take with a "heavy" 50cc set up - sure to as powerful as a simple light 70cc set up if you get what i mean

hopfully your crank wont snap and send metal fillings everywhere ruining the cylinder kit ect but if it was me i wudnt hope id just get your race crank swapped into new engine just for piece of mind

[Glen1990]

well it sounds faster than my 70cc kit ive got atm but my stock crank was in my engine for 3 years and never broke so the bhp must be shocking saying that its a bored out 50cc just bored out to 47mm and exhaust port bored out

[chrism15]

yours is a cheap 70 kit isnt it? if its a stock bored up the ports arnt gonna be as good as the polini kit ryan has coz polini wud of done lots of dyno testing i should of thought to get the ports perfect

[ryanperkins]

i know but im on a tight budget! and cant afford to split the engine :/ as i dont know how to :L

[Glen1990]

wouldnt cost alot tbh max of £30 for the parts inless you wanted to change bearings what would cost around £50 for the lot its soo easy and fun

[chrism15]

if you could get a little money together for bearings, small tub of high temo bearing grease, gaskets and seals id go for it yourself

thing is if you were actually getting 70mph - 75mph then that kits got some power to it! ok minus a little bit due to the stock crank not being as powerful as the race spec crank but if your crank snaps then bye bye engine and defiantly cylinder kit for sure and that would be definatly more expensive

tora tora reckons you can run a bbk up to like 80cc on stock crank but at least he has upgraded crank bearings

there again though if it snaps and everything gets chewed up you could always put your old engine in so you will be ok

only one way to find out though really though you should be ok with the stock crank and that kit

[ryanperkins]

what is bbk? i see it on here alot :L
and i know ireckon maybe 12hp? :O ;D but my local garage said it should be fine well for how long im going to need it :P and come september ill be in college and an aprenticeship and part time work so it wont be ridden as much as it is now
but still a fair bit

[Michelet]

Why put bearing grease on the bearings?
The oil is supposed to make the bearings go smooth?

[ryanperkins]

well im running the standard crank because i just want to get out there and i need to save for my new car

and heres a video of my bike (and its issue but has its own thread) but mostly to show the sound and show the damage to my motorbike (blue rs50)
o yeah at the end is some footage to show the damage to my old rs50 which i crashed into a car (head on! his fault because he pulled out form parked cars my side of the rroad with no lights etc) at 20mph in the rain :'(

[ryanperkins]

well i have no idea what the dodgy flickering of the light was but ive been working on the bike all day :P all ready for her mot

but the light flickering has now gone after fitting the front end and connecting the lights up :L :S haha and my lights seem to be much better than my old rs50... aa well

any whooo hers the finished product



what do you think??

[Glen1990]

prob upgraded light bulbs and may of been a loose wire or bad earth?

[chrism15]

looks nice