if you make use of one of the online parts houses that have all the factory parts fiche available you can probably find another OEM stud or bolt that would...
IC, so that's why they are tapered. We make the studs out of VW Beetles cylinder head studs, but turn them down to size, so I thought it could have been the...
Many of ARP's studs and bolts are necked down to approximately the root diameter of the thread. They will also make them with straight shanks. I had ARP make...
I Guess I should also have mentioned that their catalog mostly lists parts by application, not by dimensions, which can be a real pain. If you tell them what...
this calculator says a fatter bolt exerts a lesser tension force at the same torque value: http://www.engineersedge.com/calculators/torque_calc.htm 1) anybody...
... It's not the thread pitch, it's the "lead angle" - the combination of pitch and nominal diameter. Think of it as rolling one thread pitch out onto a flat...
Ian
iwd@...
Nov 16, 2009 11:59 pm
16818
och. trying to pretend I understood something. thanks. http://www.boltscience.com/pages/screw3.htm has the diagram of the correct terms, but not anything that...
Shanks are usually necked down to reduce the spring constant, i.e. make them more "stretchy". This reduces the cyclic stress on the stud by making the...
answering my own questions, john fisher wrote: but not anything that corresponds to ... never mind I found lots of nice pictures showing lead angle, and...
Carroll Smith's "Nuts, bolts, fasteners and plumbing" will tell you probably most everything you need to know about those items. ISBN 0-87938-406-9 cheers, ...
... According to my Unbrako bolt calculator the coefficient of friction is assumed to be 0.125 to set the torque required to develop the specified tension. I...
The previous topic led me to ask - what material should I use for cylinder studs (bolts) about 100mm inside the water jacket of a watercooled 2 stroke motor? ...
... SNIP ... So it's a race-bike ? ( You have to use water not glycol ) It's a hard one, stainless is a PITA for highly stressed applications, maybe make them...
Ian
iwd@...
Nov 17, 2009 1:56 pm
16825
I'd certainly cad or copper plate each steel stud bur after each event, run a 100% glycol flush then rewarm the bike and drain the glycol. Immediately before...
Arthur Middleton wrote: ... one of those many, redundant links said quite specifically that you must find out whether the original spec was dry or lubed. I bet...
... Makes the cost of an expensive torque wrench for general work on bikes seem somewhat redundant. As long as the cheapo wrench doesn't break down completely....
... Harley had a problem with head gasket failure on their first EVO engine (first US made engine with thru Studed cylinders) untill they changed the spec to: ...
... Some time ago I found this on the net, somewhere: "When tightening bolts to specified torque settings, unless otherwise stated, torque firgures generally...
... The Honda factory workshop manual specified torque on an axle nut on one of my bikes is 70Nm which is not easily attainable by a normal person with the...
... Bolt stretch is the only reliable method of tensioning a bolt, not always possible or practical; but the only way to do it properly. Combined with a torque...
Ian
iwd@...
Nov 18, 2009 1:00 pm
16832
Hi there. Over torquing caused by lower thread-friction is one reason, why sometimes HeliCoil™-inserts are pulled out by correct torque. The coil has against...
Old style Triumph connecting rod bolts were specified to be tightened to a stretch dimension as you mention but that required access to both ends of the...
I'm a little late on this, (just catching up on the digests),but thought I'd chip in. On the pipes I've done, the radius of bend will shrink somewhere between...
Pete Snell
snell-p@...
Nov 18, 2009 5:59 pm
16835
In case anyone might be interested: http://www.eurospares.com/graphics/engine/V175splitheadrightside01.jpg This is for the right cylinder. The red line shows...
Thanks Pete, I'll keep that in mind for next time. I was thinking that the butt weld would be the best way to go at it. I tell ya tho, hydroforming sure beats...
... We had acustomer years ago who had a run of bottom end failures on his pre-unit Triumph Moto-X sidecar outfit. My boss suggested using bolt stretch (which...
hi guys, I finally torqued the head down. Using a VW Beetle head stud as material and making it into a stud type instead of the original bolt type, I haven't...
I've yet to try hyroforming....mainly due to lack of time and other more important things, but also partly due to not being able to find a deep drawing steel...
Greg, I used regular 1018 mild steel sheet. I think the Ally megaphone was about .035" thickness. I don't think there's any need for aluminum- killed sheet...
I just use 18 guage mild steel. Cold rolled. I've got 2 of the 3 I needed done, gonna punch out the last one this week, it occured to me to use a bead roller...
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