| 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 electric’s 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.
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Camshaft on C15T is Part No. 40-477
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Cam followers are the same
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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.
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No centre stand required
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Wheels & Tyres, the rims are different and consequently the tyres. Specifications
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Tank, is smaller.
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Gearbox ratios are close, and it just requires changing the relevant gears.
Gearbox
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Seat, single.
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Foot rests, hinged metal pegs can be fitted.
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Electric’s used Energy transfer. This requires a different alternator, but you could get away with a 12V
conversion and a power-box.
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Big-end on 64 onwards was roller bearing as standard, so you should be OK.
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Compression ratios Standard 7.25:1, Competition 8.75:1
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Dual rate valve springs fitted for competition & SS80
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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.
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High level exhaust pipe.
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Mudguards - chromed.
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New or No headlamp.
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Rubber gaiters on the front forks.
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Handlebars, brake levers.
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