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60mm crank with 116mm long rod???????????
Posted: Sun Apr 04, 2010 10:51 pm
by mickdale
when building a yamaha IT175 piston TS1 200cc top end would it be a good idea to use a 60mm crank as opposed a 58mm one ??????
will it affect the smooth charecteristics and/or improve performance?????
cheers
mick
Re: 60mm crank with 116mm long rod???????????
Posted: Mon Apr 05, 2010 11:02 am
by Train Driver
Mark is fitting a 120mm rod into my 64mm crank
he said it will be so smooth you won't know the engine is running
Re: 60mm crank with 116mm long rod???????????
Posted: Mon Apr 05, 2010 11:20 am
by joespeed
6LDA 28B wrote:Mark is fitting a 120mm rod into my 64mm crank
he said it will be so smooth you won't know the engine is running
i have a 120mm rod with 18mm gudgeon pin,with a 64 mm stroke what piston are you going to use? and what cylinder?will the cylinder end up under the footboards.lol.
regards
joe
Re: 60mm crank with 116mm long rod???????????
Posted: Mon Apr 05, 2010 1:20 pm
by Train Driver
Special race-tour piston and all fitted together with a RT kit
should end up with 255cc
using a 24mm mikuni and clubman exhaust
Re: 60mm crank with 116mm long rod???????????
Posted: Mon Apr 05, 2010 7:08 pm
by the-brickie
What about using the off set cones to gain a few mm's?
Re: 60mm crank with 116mm long rod???????????
Posted: Mon Apr 05, 2010 7:11 pm
by Rosi-C9
I use an IT 175 piston on me TS1 200 too. Crank is a BGM 60/115/16 but the barrel is lowered 1,5mm at the base. Using a 1mm base and 1mm head gasket gives a squish around 1,2 mm with a central spark mmw head.
Re: 60mm crank with 116mm long rod???????????
Posted: Mon Apr 05, 2010 7:31 pm
by mickdale
thanks Rosi-C9
thats the info i need
cheers
mick