JochemsTR Posted August 1, 2020 Report Share Posted August 1, 2020 What is the reason for the endfloat on the distributor pedestal? I am aware too tight may cause the gear and cam not able to turn or too much friction, but too much endfloat causes the gear to have too much play? Jochem Quote Link to post Share on other sites
Mike C Posted August 1, 2020 Report Share Posted August 1, 2020 49 minutes ago, JochemsTR said: What is the reason for the endfloat on the distributor pedestal? I am aware too tight may cause the gear and cam not able to turn or too much friction, but too much endfloat causes the gear to have too much play? Jochem Prevent jamming as the parts heat up and expand ? Quote Link to post Share on other sites
Motorsport Mickey Posted August 1, 2020 Report Share Posted August 1, 2020 (edited) All parts have an endfloat, even screw threads on pedestals on watches ! as Mike points out. When you are machining in engineering you learn to make all machine movements in one direction, even with high quality minimum play components on machine tools to minimise and reduce any end play between the two surfaces of the male and female threads employed. In the same way two components which run against one another cannot have no end play otherwise it prevents any lubrication to remain between the two surfaces which helps reduce the friction and potential seizing up. Too little end play squeezes out the existing lubrication and causes excess wear. Set end play at the minimum figure to maximise length in service. Mick Richards Edited August 1, 2020 by Motorsport Mickey Quote Link to post Share on other sites
Rob Salisbury Posted August 1, 2020 Report Share Posted August 1, 2020 Also, too much end float will give you variable timing as the drive rises and falls and twists on the helix gears. Cheers Rob Quote Link to post Share on other sites
Waldi Posted August 1, 2020 Report Share Posted August 1, 2020 Also, if the gear can move upwards, you will loose more oil to the dizzy side. Not needed there. Waldi Quote Link to post Share on other sites
JochemsTR Posted August 1, 2020 Author Report Share Posted August 1, 2020 I adjusted the endfloat by installing one gasket and pulled the gear up with a finger. If it felt there was play I left it like that. Worked over many miles. With my new engine, I want to do it according to the Brown Bible. Triumph spent a whole chapter on this. Just wondering about the reason. The variable timing as Rob mentioned seems most plausible to me. Jochem Quote Link to post Share on other sites
ntc Posted August 1, 2020 Report Share Posted August 1, 2020 (edited) Jochem Worth taking your time to get it right as above you will also notice the brass type finish on the top of where is goes for good reason also to much play will hammer the mill pin. Edited August 1, 2020 by ntc Quote Link to post Share on other sites
BlueTR3A-5EKT Posted August 2, 2020 Report Share Posted August 2, 2020 Get it wrong/too tight and it looks like this quite quickly. Peter W Quote Link to post Share on other sites
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