Zoöid Third Times a Charm CB175
- Thread starter Texasstar
- Start date
Trevor May
Been Around the Block
Good work zeke! Your attention to quality is admirable.Texasstar said:
Sent from my iPhone using Tapatalk
Texasstar
Can't is a four letter dirty word
Zoöid Third Times a Charm CB175
Getting ready for the engine build on this cb175 and we have been sourcing some alternative parts to help keep the cost down for the cb175 builders out there. The racing carts use 219 link cam chains. Besides having the lowest coefficient of the DID chains you can add a little bling to the heart of your little bike...don't use the oring one
http://www.fastech-racing.com/219-kart-chains/
Sent from my iPhone using Tapatalk
Getting ready for the engine build on this cb175 and we have been sourcing some alternative parts to help keep the cost down for the cb175 builders out there. The racing carts use 219 link cam chains. Besides having the lowest coefficient of the DID chains you can add a little bling to the heart of your little bike...don't use the oring one
http://www.fastech-racing.com/219-kart-chains/Sent from my iPhone using Tapatalk
Trevor May
Been Around the Block
We used to bush our CB77 350 kitted con rods when the cranks were apart. I have also had small ends opened up to take CB500 pistons with highly modified squish band crowns and ran then without copper plating on teh small end eye and that worked in a race CB160 motor too.
Another alternative in a CB200 is CB77 (61mm) pistons - same piston dimensions as a 200 but bigger and with a different (but machinable) crown.
Another alternative in a CB200 is CB77 (61mm) pistons - same piston dimensions as a 200 but bigger and with a different (but machinable) crown.
Texasstar
Can't is a four letter dirty word
Teazer you once wrote, I think it was in the yahoo group, that it would be nice if there was an affordable modern type piston that could be used for our little bikes. We paid some ridiculous amount for Lucky's Pistons out of the Netherlands. Totally agree. The Tbolt Pistons were quality Pistons made in Taiwan and only 70 bucks each but required $$$ in machining. There are some options if you deck .120" like we haveteazer said:We used to bush our CB77 350 kitted con rods when the cranks were apart. I have also had small ends opened up to take CB500 pistons with highly modified squish band crowns and ran then without copper plating on teh small end eye and that worked in a race CB160 motor too.
Another alternative in a CB200 is CB77 (61mm) pistons - same piston dimensions as a 200 but bigger and with a different (but machinable) crown.
but not too many options if you don't have access to a lathe, mill or a balling ball and some lapping compound For those of you that don't know you can get better squish with a bowling ball. We are working on some options for the average little motorcycle enthusiast who wants to get their little bike running better than stock so they can go down the road with the goofy smile that we all know.
Yes, custom pistons for small bikes are always a bit of an issue. I did design one a while ago but needed to order way too many sets to make it viable. Mike Riddell did offer a 57mm piston IIRC for 175 motors. I also don't have a machine shop so I have to work out the design and pay someone to modify parts for me. Not cheap and as long as I don't blow things up too often, it's more cost effective than buying machine tools.
I usually have to get the barrels machined as well as pistons to get the squish band shape I want from available pistons. That's how I built my first CB72 350 with CB350 pistons. Not all work, so you have to be OK with failure along the way to success. And it's always a series of compromises as you try to optimize the overall package.
What motor is in the Fuller bike? 175 or 200? Where you end up, always depends upon where you started the journey. There are different options available for a 200 than a 175 that are worth thinking about and crank parts can be mixed and matched to get the right combination of top and bottom ends. For that bike I would go for torque to make it more fun and that suggests the use of high compression and large bore and maybe a mild street cam to stretch the powerband back into shape.
I usually have to get the barrels machined as well as pistons to get the squish band shape I want from available pistons. That's how I built my first CB72 350 with CB350 pistons. Not all work, so you have to be OK with failure along the way to success. And it's always a series of compromises as you try to optimize the overall package.
What motor is in the Fuller bike? 175 or 200? Where you end up, always depends upon where you started the journey. There are different options available for a 200 than a 175 that are worth thinking about and crank parts can be mixed and matched to get the right combination of top and bottom ends. For that bike I would go for torque to make it more fun and that suggests the use of high compression and large bore and maybe a mild street cam to stretch the powerband back into shape.
Texasstar
Can't is a four letter dirty word
Right now we have a 175 engine in Fullers. We picked up some "racing" lol 54mm Pistons for a Honda 90 TRX quad (now we may need one of those to race the neighbor kids in the backyard with http://dratv.com/54hicorapi11.html as Simo noted they looked like they were similar to what was on the old Akunar site but I bet they are Chinese...don't know if we will use them on this build. Have some cb72 Pistons...57mm Tbolts with 13mm ends...the longer Yamaha beluga rods with 13mm pin ends and several 160,175, and 200 engines around and we the 160 head that we ported and decked last go round. So we have options...contacted Thailand today.teazer said:
I remember you saying your 188cc ??? Bike was faster than the 240cc bike???Benjamin is going to chuck some liners up in tha lathe
Texasstar
Can't is a four letter dirty word
The Honda TRX Quad racing piston is in...for examination. As expected it is Chinese but I put it up to y'alls scrutinity please tell me anything that you would like me to measure. My first impression was the finish was better than the TBOLTs. Here is a picture of the Tbolt vs the WStandard. http://www.wstandardchina.com/profile Wstandard is making a push in the USA as WStandardUSA selling their lithium batteries. The Tbolts were manufactured in Taiwan and the WStandard in China. I did receive an email back from Akunar saying they are relaunching in January. Wstandard left Tbolt right.
