BSA C15

 

 

  Home

 

BSA C15

  History

  Owners Bikes

  Owners Projects

  Pictures

  Reviews

  Specials

  Travel with a C15

  Plastic Models

 

My Bike

  Pre-renovation

  Chassis Re-build

  Engine Strip Down

  Engine Re-build

 

C15 Technical

  Specifications

  Serial  Numbers

  Colour Schemes

 

General Info

  Alternator

  Bike Storage

  6V Wiring

  Cable Lengths

  Clutch Adjusting

  Clutch Arm Repair

  Convert to 12V

  Cylinder Head

  Electronic Ignition

  Engine

  Frame

  Gearbox

  Head Gaskets

  Heli-Coils

  Ignition Timing

  Installing Indicators

  Lead Replacement

  Lubrication

  Metal Polishing

  Oil Types

  Paint or Powder

  Replacement Rectifier

  Small-end Bearing

  Spanner Sizes

  Thread Sizes

  Trials Air Filter

  Trials Conversion

  Tyre Pressure Chart

  UK Reg Detail

  Wet Sumping

  Wheel Building

 

Helpful

  Trouble Shooting

  Manufacturers History

 

Restoration

  Restoration Guide

 

Links

  Bike Sites

  Club Sites

  Museums

  Supplier's

  Shows & Jumbles

 

Other

  My Life

  My Faith

  Love of Bikes

  

My Bikes

  Triumph Tina

  Honda C200

  Honda CD175

  Honda CB250RS

  BSA B50

  BSA C15

  Suzuki GN250

  Kawasaki W650

 

BSA

   BSA History

   Owners Club

   BSA Exchange Scheme

 

Engineering

   

 

Email

 

 

 

Conversion of C15 Star to C15 Trials

1) Can the conversion be carried out?

There is no reason why you can not convert a C15 Star into a C15T. Some of the work will be a case of getting bits and changing them, others like the electricís may prove a little more difficult, but not impossible.

2) What are the major differences between the c15 & c15T?

The list below covers the main differences.

  • Camshaft on C15T is Part No. 40-477
  • Cam followers are the same
  • Frame, does not have mountings for rear foot rests, the rear sub-frame was welded from 1966, some were modified to lower the sub-frame mounting and hence the seat height (Jason's C15T on the specials page) also Faber frames, there are also some specials around.
  • Steering head geometry is modified to give a more responsive action.
  • Swinging Arm is longer to give a longer wheelbase and accommodate the larger tyre
  • Stronger stanchions of bigger diameter and narrower yokes
  • No centre stand required
  • Hubs are different sizes. The front has a smaller brake drum and the rear hub has a removable sprocket.
  • Wheels & Tyres, the rims are different and consequently the tyres. Specifications
  • Tank, is smaller.
  • Gearbox ratios are close, and it just requires changing the relevant gears. 
    Gearbox
  • Seat, single.
  • Foot rests, hinged metal pegs can be fitted. They are fitted to lugs almost level with the rear seat tube.
  • Electricís used Energy transfer. This requires a different alternator, but you could get away with a 12V conversion and a power-box. 
  • Big-end on 64 onwards was roller bearing as standard, so you should be OK.
  • Compression ratios Standard 7.25:1, Competition 8.75:1
  • Dual rate valve springs fitted for competition & SS80
  • SS80 had a bigger inlet valve and 1 1/8" bore carb. I can not see that this was standard on the comp models, but may be an upgrade path.
  • High level exhaust pipe.
  • Mudguards - chromed.
  • New or No headlamp.
  • Rubber gaiters on the front forks.
  • Handlebars, brake levers.

 
Copyright  © Cedric-2014

The contents of these pages are for your reference and while care has been taken to ensure authenticity no liability can be accepted by the author. 

BSA C15

Why not visit www.amputee.me.uk