Hitchcocks Forum

To get my main bearings and big end done, I dismantled the engine as far as i could then removed it from the frame. I've taken it to a local workshop to split the cases and do the bearings, after all I couldn't true the crank myself.
They say that the crank had come unbolted. They are also worried about the size of their truing jig to reassemble it
Anyone else come across an unbolted crank? Mechanical disaster, surely?

John,
Can't imagine how many I have split and never found one with even loose nuts. Every one requires a goor rattling to get undone

How big is their jig? Mine was trued up on a Myford lathe which isn't a particularly big tool. I can only imagine that the loose nuts are an assembly fault.

As to the jig, I haven't seen it.
It's an '89 bike, so they must have takena long time to work loose!

The Indian flywheels are very soft and have seen a number of crankpin holes that have worn oval, but not seen one with loose nuts. There are keeper screws preventing the nuts from turning so something must have worn a face to cuase this.

If they can not true up a small set up from the Enfield, get your stuff out P D Q and find a true engineering w/shop

I agree, these aren't big flywheels so if they can't cope get them back. It's quite straight forward to make a gig to spin the wheels and you can buy a dti and a magnetic stand for very little now. It may be that the run out is fine and the setup is quick and easy.....although as we say in NZ "yeah right,"

I trued my own flywheels between centres on my Sealey lathe using 2 DTIs and 2 pry bars. I was amazed at how easy it was, got it down to .0005" which was well within limits.

Hi guys---------- OLD ENFIELD, are you sure that's not a typo there ??? You got it down to }------------ 0.0005" ??? That's 5 tenths of a thou !! And that CERTAINLY is within limits !!

5 tenths of a thou: is half a thou. Indian Bullets supposedly are trued up to about 3 thou (At best) normal bike recomendation is 1.5 or better, so half a thou is excellent, so well done Old Enfield, very encouraging.