Re: Two stroke lovers
Posted by Nigel B on October 6, 2020, 8:21 pm, in reply to "Re: Two stroke lovers"
The CZ twin parts are scarce now. |
They were pretty scarce when the things were new.
I made the msiatke of buying one new in 1979 - the "face lifted" model with the rust-very-quickly chrome panels on the tank. I had enough cash when added to my MZ TS150 in P/X to be able to afford one new. It cost £413 OTR, when an TS250/1 was £525 & on £40ish a week gross as an apprentice that £112 was a lot. That and Dave Minton no less had suggested that the CZ twin was OK in a What Bike head-to-head roadtest with the Supa5, so what could go wrong ?
The first gearbox failure came on the day it was supposed to go in for the first service - it wouldn't change down from top gear. Failure of the pivot rivit on the gearchange cam plate.
Then it siezed while trying (and failing) to keep up with a friend on a TS150. Freed up when it cooled down, fortunately without lasting damage.
The clutch cable failed, but at least it had the foot operated clutch to get home.
The battery kept going flat & it wouldn't start on the "bump start" position - I was walking to work more than riding.
Then it wouldn't reliably select all the gears - the shaft the shift forks slid on had snapped.
On going to collect it after the repair, the battery was flat.
4 miles later (after the shop charged the battery) it stuck in top gear again. Managed to get back to the shop in top - shift cam rivit failed again. None of the new "1 down, 3 up" cam plates available, so repaired with the old "1 up, 3 down" version - that was fun 3000 miles into owning the bike.
The head gaskets failed - the rebuild had used the new composite gaskets rather than the old solid type & they didn't last.
After fitting a battery isolator switch to stop the continual discharges, finally found the faulty sticking regulator that was discharging the battery through the dynamo by accident. Took the plugs out & the engine started motoring !
Finally gave up on it when the 6 month/6000 mile warranty expired. Got £300 in P/X against a "last year's model" Suzuki GS425E that had been reduced by £100 & took out a bank loan.
Life is too short to waste it on CZ 250 twins. 40 years on & I'm still scarred by the experience !