Spur gear calculator.

Spur gear calculator.

This topic has 7 replies, 6 voices, and was last updated 16 July 2016 at 06:26 by michael howarth 1.

Viewing 8 posts - 1 through 8 (of 8 total)

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15 July 2016 at 09:14 #246677
Mark P.
Participant
@markp
Hello all, can anyone tell me if they know of an online gear calculator? I know the ratio (1.89:1) but I think that I could get away with 2:1 I also know the center distance of the two gears 103.77mm and the MOD 1.25. But the more I look at the formulas for calculation the more confused I get, I must say that formulas are not my strong point, hence my quest for an online gear calculator.

Regards Mark P
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15 July 2016 at 09:14 #32736
Mark P.
Participant
@markp
15 July 2016 at 09:24 #246678
Brian Wood
Participant
@brianwood45127
Hello Mark P,

This may not be quite what you are looking for, but you can get gearing in the form of 17 teeth driver to 9 teeth driven to give you a ratio 1.888 recurring to achieve a very close approximation to 1.89:1.

So, gears of 85/45 if you have those would do what you need [these are the simple multiples by five of the values 17 and 9

Regards Brian
15 July 2016 at 09:39 #246681
Neil Wyatt
Moderator
@neilwyatt
Mark, you have a personal message.

Neil
15 July 2016 at 19:11 #246726
duncan webster 1
Participant
@duncanwebster1
module is pcd (mm)/teeth, the inverse of diametral pitch. If you flog through the arithmetic you get either 108/58=1.86 or 57/109 = 1.91, both with a centre distance of 103.75 mm
15 July 2016 at 20:41 #246732
John Stevenson 1
Participant
@johnstevenson1
In 1.25 Mod 106 / 56 will give you 1.8928 as a ratio with a centre distance of 101.25mm

Or 108 / 58 wil give you 1.86:1 at a centre distance of 103.75
15 July 2016 at 20:52 #246734
Mark P.
Participant
@markp
Thank you all for your help, I seem to have been chasing my tail, maths have never been my forte.
Regards Mark P.
16 July 2016 at 06:26 #246762
michael howarth 1
Participant
@michaelhowarth1
Try "GEAROTIC".

Mick
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