Hi,
I have following gearing in my 28 JD:
18/43 primary, secondary 48/27. Total ratio is 4,25.
The top speed is about 100 km/h, but good travelling speed is 90 km/h.
Motor revs are apps. 3400rpm when driving 100 km/h (top speed in my case)
I'm thinking of changing the gearing to drop the ratio to get more comfortable revs/maybe to get 100 km/h to travel speed.
What do you think which is the optimal gearing for JD? What if I change 48->40. Total ratio would be 3,53. Theoretical revs in 100km/h would be 2800 rpm.
Is that too big change, any comments?
Antti
I have following gearing in my 28 JD:
18/43 primary, secondary 48/27. Total ratio is 4,25.
The top speed is about 100 km/h, but good travelling speed is 90 km/h.
Motor revs are apps. 3400rpm when driving 100 km/h (top speed in my case)
I'm thinking of changing the gearing to drop the ratio to get more comfortable revs/maybe to get 100 km/h to travel speed.
What do you think which is the optimal gearing for JD? What if I change 48->40. Total ratio would be 3,53. Theoretical revs in 100km/h would be 2800 rpm.
Is that too big change, any comments?
Antti
Comment