Rod bearings?
- Thread starter doodlebug-8hp
- Start date
- Tags bearings?
how can you make something without any knowledge of why and how they are made they way they are?
yes they need the bearing incert.
yes the bearing size needs to match within thousands.
yes the weight of the rod needs to be right.
yes the oiling holes need to be there and in the right place.
yes sometimes it's better and cheaper to buy something that's flying around at 8 thousand RPMs waiting on the right second to take out your nut sack.....:scared:
yes they need the bearing incert.
yes the bearing size needs to match within thousands.
yes the weight of the rod needs to be right.
yes the oiling holes need to be there and in the right place.
yes sometimes it's better and cheaper to buy something that's flying around at 8 thousand RPMs waiting on the right second to take out your nut sack.....:scared:
A lot of design and research went into ARC rods. It has a built in oiling system. Stock just slings oil and hopes it covers everything. Stock runs 3600 rpm. Billet can go over 8000. I think a bearingless aluminum rod spinning at 8000 rpm would gall. Aluminum is a soft sticky metal. Once you get a little build up it will keep adding more and more.
At $83. I'd buy an already engineered precision built rod with bearings that you can change easily when you feel like it for cheap.
At $83. I'd buy an already engineered precision built rod with bearings that you can change easily when you feel like it for cheap.
Do i absulutly need rod bearing when using a billet rod? Theres gotta be a way around it? Please help asap 
Also, if you want to be taken seriously and continue to have members help you (ON THEIR TIME) on this forum I would advise dropping the "attitude".:no:
Michael
That is awesome! Ya got it stuck in my head now!
The kinder, gentler way to say this is...you have a professional machinist making you a rod...what was HIS suggestion for bearings? Motocross bikes typically use needle bearings riding on hardened journals. Was the machinist OK with no bearings at 8K RPM? How will he want to keep things lubricated? Ask your machinist some very pertinent questions then get back to us.
I think it would be awesome to have your own rod "built" by a machinist...I have never ventured that far as I don't have a $1000 to spend for the CNC time, the mechanical engineering, the machinist, and the programmer to "guess" on something that can be bought for $85.00!
The kinder, gentler way to say this is...you have a professional machinist making you a rod...what was HIS suggestion for bearings? Motocross bikes typically use needle bearings riding on hardened journals. Was the machinist OK with no bearings at 8K RPM? How will he want to keep things lubricated? Ask your machinist some very pertinent questions then get back to us.
I think it would be awesome to have your own rod "built" by a machinist...I have never ventured that far as I don't have a $1000 to spend for the CNC time, the mechanical engineering, the machinist, and the programmer to "guess" on something that can be bought for $85.00!
Hmmm. The ARC rod for my Tec doesn't use bearings...
I started thinking about a roller bearing for the crank end of the rod, but then you have to harden the rod journal, and have a steel rod with hardened journal....
Probably couldn't have a split in the rod end or the rollers would not ride over it well. And since you can't separate the crank, not gonna happen.
I started thinking about a roller bearing for the crank end of the rod, but then you have to harden the rod journal, and have a steel rod with hardened journal....
Probably couldn't have a split in the rod end or the rollers would not ride over it well. And since you can't separate the crank, not gonna happen.