This was a ground up build using an Otter frame and a "free hand" from a very trusting owner who wanted a trials bike that is a little different, we built many hand made one off items:
Showing posts with label Bsa C15 Trials Special. Show all posts
Showing posts with label Bsa C15 Trials Special. Show all posts
Sunday, 26 May 2019
HEC Archives 2
Another random instalment from a previous.. very pretty BSA C15 project:
This was a ground up build using an Otter frame and a "free hand" from a very trusting owner who wanted a trials bike that is a little different, we built many hand made one off items:
This was a ground up build using an Otter frame and a "free hand" from a very trusting owner who wanted a trials bike that is a little different, we built many hand made one off items:
Sunday, 9 November 2014
BSA C15 Spl
As you have seen on previous posts we were involved with a little C15 that has been transformed from an ordinary little workhorse to a glamorous competitor!
The frame is an Otter copy by Faber, wheels, tank, mudguards, forks and airbox came from Avery products near Southampton.
This project is absolutely full of "one off" items.
It has been gracing the Wiltshire countryside through the summer although we do need to alter the top oil feed conversion a little through the winter.
The frame is an Otter copy by Faber, wheels, tank, mudguards, forks and airbox came from Avery products near Southampton.
This project is absolutely full of "one off" items.
It has been gracing the Wiltshire countryside through the summer although we do need to alter the top oil feed conversion a little through the winter.
Wednesday, 13 March 2013
BSA C15 Faber Progress
The black grease substance is "Graphogen"
Distributor is redundant, Electrex World STK 010 system to be used.
Monday, 11 March 2013
BSA Faber C15 Trials Spl
As the BSA C15 project continues there have been a few small points worth a note.
If you lower the gearing of of the road going BSA by reducing the primary chain engine sprocket (18 teeth),the duplex chain side plates will not clear the inner crankcase seal housing. In my case I didn't realise this until trying to fit the chain!
I did consider making a new spacer to allow the sprocket to sit a little further away but this would mean doing the same to the NEB clutch and there is not really sufficient shaft length to do so.
A word with Terry at Avery Products told me that the accepted method is to fit a thinner oil seal and dress the housing away.
Ideally the housing should have been machined before assembly, however, by fitting an old oil seal and filling the area with silicone I was confident that using hand scrapers and rifler file I could remove and fettle the section.
I then checked the new oil seal, lip position by fitting the spacer with engineers Micrometer Blue around the outside. The seal lip only begins to contact the spacer, this will require a new spacer with a very slight counter bore to allow the unit to sit deeper and provide full lip contact.
It seems there may be a similar problem with the clearance of the drive chain against the gearbox casing. The gearbox sprocket has 13 teeth.
If you lower the gearing of of the road going BSA by reducing the primary chain engine sprocket (18 teeth),the duplex chain side plates will not clear the inner crankcase seal housing. In my case I didn't realise this until trying to fit the chain!
I did consider making a new spacer to allow the sprocket to sit a little further away but this would mean doing the same to the NEB clutch and there is not really sufficient shaft length to do so.
A word with Terry at Avery Products told me that the accepted method is to fit a thinner oil seal and dress the housing away.
Ideally the housing should have been machined before assembly, however, by fitting an old oil seal and filling the area with silicone I was confident that using hand scrapers and rifler file I could remove and fettle the section.
I then checked the new oil seal, lip position by fitting the spacer with engineers Micrometer Blue around the outside. The seal lip only begins to contact the spacer, this will require a new spacer with a very slight counter bore to allow the unit to sit deeper and provide full lip contact.
It seems there may be a similar problem with the clearance of the drive chain against the gearbox casing. The gearbox sprocket has 13 teeth.
Sunday, 16 December 2012
Monday, 10 October 2011
Subscribe to:
Posts (Atom)