Originally Posted by Sankar
The show was delayed 1 hour because of that, the IJT was very very pathetically slow while it was taxiing down the runway and it didn't seem like it would get off the runway and as i thought it didn't. Saw the plane disappear down the runway and then later a huge cloud of dust up in the air. And today in the paper i read that there was not enough thrust from the engine. That's why the plane was slow.
Even otherwise, the French Larzac engine used in the initial prototypes of IJT-36 developed inadequate thrust. The French were demanding a lot of money for developing a higher thrust version for HAL and so HAL discarded the French engine in favour of the Russian engine from Saturn with whom an agreement has been signed for manufacturing up to a thousand engines in India.