Thursday 15 September 2011

Gear Box Reflections

By disssemling Toyota k40 gear box  had given better insight of how gear box operates.

what type of gears are used for reverse in a manual gear box?
The reverse gears are usually straight cut gears
A) Give an explanation for your choice
The reason we choose straight cut as reverse Straight cut  will 'whine' the faster also offer  A. More directional application of force allowing for less power loss. and B. Higher acceptable loads until failure, making the transmission stronger and more efficient. 
2 What type of gears are used for all forward gears in a manual gear box?
 The forward gears are usually helical cut gears
a) Give an explanation for your choice?
The reason we use helical gear is they have better contact and easy shifting in high speed and noise levels are low
3) What is the purpose of a sinchromesh unit
sinchromesh unit consist of sincro gear and sincro ring.sincromesh unit helps in sincronising two gears while changing and help reducing friction at high speeds there by avoiding damage to gears and also reducing noise levels.
4)Explain the operation  of a sincromesh unit
 is a mechanism which ensure that gear changes are smooth and quiet by preventing the gears from being engaged until both components coming into contact are travelling at the same speed. The synchro cone is the component which actually speeds up or slows down the gears before they are engaged while the baulk ring stops the engagement taking place until the speeds match.

b)what is the purpose of a baulk ring or sincro ring
baulk ring acts as an intermidiary prior to the shifting of the gear.It is a mechanism which helps ensure that gear changes are smooth and quiet by preventing the gears from being engaged until both components coming into contact are travelling at the same speed.CHow do we check a baulk ring for servicability?
we physically check a baulk ring for wear on teeth
D) What types bearings do we find in gear boxs
we usally find ball race bearings and roller bearings
5 Give an explanation of a gear ratio?
The gear ratio is the no of the teeth present on input shaft and an output shaft.

1 comment:

  1. Good work, but spending a little more time with how you present your questions and answers would make it easier to read. Ie; type all the questions in bold font and the answers in standard font.

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