
Another trip to see Alex got me a pair of GT500
forks which would prove better than the older T500 ones. Then I went in
search for some wheels.
Stafford bike show was coming up and I was told I would surely get
fixed up with something there. I had never been to Stafford but I can
honestly say It was the best day out ever. My pal had to drag me away at
4.30 just so we could get home at a reasonable time. And guess what ? ...I
got a superb pair of flanged alloy rims for £19 each. They were brand new
shop soiled Yamaha rims already drilled but I gambled on the drillings
being about right.. ( they were perfect).
Talking to Graham Boothby from TGA Racing one day got me the front
brake I had wanted. Graham told me he had just brought five new GT750
front brakes in from France, which had been forgotten about. £250 got me
the brake and twin lever, and the whole lot polished up real nice. I later
got my fairing from TGA for £100. Its good quality and I can recommend it
to anyone.
One of the first jobs was to junk the old cup & cone steering
bearings and replace them with taper rollers. I came by a set of yokes
with a good strong feel to them and about the right offset and width.
(They could well be Suzuki) A little engineering saw them accept a pair of
bearings and later I spent some time removing the excess weight from the
bottom yoke which also improved the looks.
One evening totally out of the blue I received a call from a fellow
called Mike Thomas. Mike was racing Honda K4's and was thinking of using a
Suzuki T500 front brake on his Honda. It turned out he had been speaking
to Alex Clapson who had told him I had one for sale. Mike was also working
on restoring a Robinson 4ls front brake but it needed some real work to
get it back to original. While we spoke Mike told me about a friend in
Mid-Glamorgan who was also interested in T500 Suzuki's. Chap named Rob
Greenhill. I never gave it another thought and then a couple of weeks
later I received another phone call. ( Thank goodness) from Rob Greenhill.
Motorcycle Racer and Engineer, also Expert on many things including T500
Suzuki's .
After several exchanges of kindness and urine taking Rob introduced me
into the world of the Two Stroke Tuner. Everything from Graham Alexander
Bells theory on expansion pipe lengths to machining the squish on cylinder
heads. Rob is a real perfectionist and when he offered to make me some
crankcase stuffers and machine my crankcases I wasn't going to say no.
Later we got onto cylinder heads and how we needed to locate a welder who
could fill up our combustion chambers with aluminium at a reasonable cost.
My old mate Roger new just the man to do the work and so we commissioned
him to weld my heads first, and then when Rob saw the work he sent me a
pair of his heads to have the same done. Fitting crankcase stuffers is of
course to replace the volume of any material removed when lightening a
crankshaft. Embarrassed as I was, I had to ask Roger if he would do the
job (again). He's a real mate and he agreed to lighten and rebuild my
crank once more.
Squish heads increase the compression and combustion therefore making
for more power. Extra weld on the topside of the head is required to
retain the wall thickness and I hope will also add strength. I remember
cracking a cylinder head when I owned my standard T500. It seems to be a
common fault on this engine.
There has been some recent theories on the subject of crank stuffers.
Some would say that they are not needed, and the signal from the engine
and the expansion pipe dimensions control the power. Others say that only
partial stuffing is required if you can get the volume in the crankcase
exact. Wherever exact is. Me, I decided to go with the tried and tested,
Rob made the stuffers and machined my crank cases to accept them.
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