Another let down

My racing bike has been languishing in the office. So today in torrential rain I took the MTB to work 19 minutes, quicker as it was raining, av bpm 120 max 154 bpm. Decision made to bring R200 racer back, difference in riding position noticeable after several weeks on MTB but any hope of record time home was dashed by rear flat, interesting in many aspects as it was the first time I have had to manage a skid on a bike, suddenly the thing took on the handling characteristics of a racing snake. Also noticed prior to flat harsher ride, amazing how you get used to the MTB soaking up the bumps. 19 mins for return journey but shredded tube and tyre means no cycling on R200 until spares arrive. Again.