One less thing to blow up! I am still trying to sort my oil tank out from the last outing.What are the advantages in getting rid of the oil tank?
Glen
You can put your exhaust system where others put an oil tank!What are the advantages in getting rid of the oil tank?
Glen
Would there be any advantage to running a high exhaust vs the exhaust in the photo above?You can put your exhaust system where others put an oil tank!
My Rickman has to have an oil catch tank as part of the fairing these days. Without the exhaust running under the frame the fairing can be held tight to the frame. If you notice the fairing lower has shaped clearance for the frame lower engine mounts.Would there be any advantage to running a high exhaust vs the exhaust in the photo above?
I'm thinking the low centred exhaust above won't drag on corners and helps lower cog.
Also an oil tank vs oil in frame lowers cog a bit.
That might not be an issue with this drainpipe bike as the whole bike seems very low. Would be a cruncher for an older body I think!
The standard steel oil tank is just over 2 lbs. I was going to build one in Al but as the Al had to be thicker, weight advantage gone.
That big pipe looks heavy! Maybe it's thin wall and not that heavy.
Glen
Who actually made your frame?Nice, I went a little crazy and added some Ti, though mainly time spent with the bench drill, it can get a little addictive!!
Mk4 1976 Seeley original, Mk3 R Titchmarsh copy. I like that photo, bike is hiding drainpipes and brothel creepers, was Bob a Ted (a UK reference)?Who actually made your frame?
He wasn't really of the Ted generation and apart from the shoes and slim jeans I didn't see him dressed that way, but of course I mainly saw him in race paddocks.Mk4 1976 Seeley original, Mk3 R Titchmarsh copy. I like that photo, bike is hiding drainpipes and brothel creepers, was Bob a Ted (a UK reference)?
Do you know if his frame is an original or a copy?Steve raced iot with CRMC in the late 80s
Not the main advantage, I'm sure: the frame acts as a giant heat sink to cool the oil. Not an issue on a street Norton, but useful on a race bike. The large tube under the fuel tank gives a larger volume of space for the breather system.What are the advantages in getting rid of the oil tank?
Glen
Happy to give it a go if you can get full size drawings.Here's another view. I think someone should be offering this frame. Eliminating the oil tank is very attractive.
I agree that it's unusual that there's no bracing between the spine and the lower tubes (short of those tiny 3/8 tubes), or at least the spine and lower tubes crossing just short of the headstock. What forces do travel down the lower tubes would end up pushing (bending/flexing) the swingarm pivot out of axis. Might be a terrifying, or pleasantly soft ride.Re. pic 2 in #1, the lower tube run has a design deficiency. There should be a horizontal brace between the tubes as well as at least one brace each between the lower tube and the spine tube.
This is standard practice in steel design wherever a tube or beam changes direction. Forces have to be diverted at the joint, or out of axis bending will occure.
In trelli frames of the 90s this is demonstrated very well.
-Knut
You can put your exhaust system where others put an oil tank!
Do you know if his frame is an original or a copy?