|
zakboy
|
 |
« Reply #105 on: March 26, 2011, 02:37:46 PM » |
|
is that with the axle you have on now i think you said it is a b type, the only other time i have had a prob with not being able to get over ascertain speed believe it or not was to do with the exhaust system not leting the gasses out quick enough,i would get to a certain speed and it would just not go any more
|
|
|
|
« Last Edit: March 26, 2011, 02:58:16 PM by zakboy »
|
Logged
|
Give me the strength to except the things in life i can not change
|
|
|
|
terry t
|
|
« Reply #106 on: March 26, 2011, 02:49:09 PM » |
|
is that with the axle you have on now i think you said it is a b type
yes b type diff 2.78 with 205/55/15/wheels |
|
|
|
|
Logged
|
|
|
|
|
zakboy
|
|
« Reply #107 on: March 26, 2011, 03:01:14 PM » |
|
are you using the origanal exhast system terry
|
|
|
|
|
Logged
|
Give me the strength to except the things in life i can not change
|
|
|
|
terry t
|
|
« Reply #108 on: March 26, 2011, 03:11:39 PM » |
|
are you using the origanal exhast system terry
yes right i have been checking the diffs on trike is b diff 39/14=2.79 spare a diff 42/13=3.23 now i have another spare axle i have just taken apart and this is 39 teeth on the crown wheel and 11 on the pinion given me 39/11-3.55 |
|
|
|
|
Logged
|
|
|
|
|
zakboy
|
|
« Reply #109 on: March 26, 2011, 03:49:33 PM » |
|
yes the last one you mention there 3.55 is 750 robin and 750 kitten van,what is your 5th gear ratio
|
|
|
|
« Last Edit: March 26, 2011, 03:51:48 PM by zakboy »
|
Logged
|
Give me the strength to except the things in life i can not change
|
|
|
|
terry t
|
|
« Reply #110 on: March 26, 2011, 05:20:52 PM » |
|
yes the last one you mention there 3.55 is 750 robin and 750 kitten van,what is your 5th gear ratio
5th gear ratio is 0.939 |
|
|
|
|
Logged
|
|
|
|
|
zakboy
|
|
« Reply #111 on: March 27, 2011, 10:38:43 AM » |
|
its a mystery to me terry,i have to test mine yet i will be diapointed if im not crusing at 65 to 70
|
|
|
|
|
Logged
|
Give me the strength to except the things in life i can not change
|
|
|
|
tbone
|
|
« Reply #112 on: March 27, 2011, 11:50:45 AM » |
|
|
|
|
|
|
Logged
|
NO I WON`T. aye ok then, i will
|
|
|
|
terry t
|
|
« Reply #113 on: March 27, 2011, 12:15:02 PM » |
|
Thanks tbone.yes i have read that i think i have been right thought this forum. looking at related items about wheels and diffs. i think i have another problem. because according to my calculations and checking outher sites i should get at least 95 in top were i can only get 65 max that giving it stick throughout the gears i am changing the carbs at the moment then check exhausts it a last resort change diff to from 2.79 to 3.55 the suns out i want to ride it not fix it  |
|
|
|
|
Logged
|
|
|
|
|
terry t
|
|
« Reply #114 on: March 27, 2011, 02:50:07 PM » |
|
update. think i have sorted it. *****CARBS**** i changed the carbs for another set i had. it started ok took it for a run up the carridge way and f****** it shifted. i bottled out a 75/80  .still handled well no shakes at low or high speeds will set up and balance carbs and see what happens so it looks like the carbs for some reason was holding it back on full throttle poss secondary jets thanks to everyone for all your input on this |
|
|
|
|
Logged
|
|
|
|
|
tbone
|
|
« Reply #115 on: March 27, 2011, 02:53:21 PM » |
|
Ok, lets start again.
Goldwing 1000 correct?
has a primary reduction of 1.708
a secondary reduction of 0.825
giving 1.4091 overall reduction of crank to the input shaft.
1st gear = 2.5
2nd gear = 1.708
3rd gear = 1.333
4th gear = 1.097
5th gear = 0.939
Final drive = 3.40
Lets stick to your 4000 rpm
Eng = 4000 divided by overall reduction 1.4091 = 2838 rpm at the input shaft.
Output = 2838 divided by final drive ratio 2.78 = 1020 rpm at the wheel.
To convert to MPH = engine rpm x raduis divided by final drive ratio x 168
4000 (rpm) x 4.43inches (tyre height) plus 7.5inches (half wheel diam) = 4000 x 11.93 = 47720
1.78 (primary reduction) x 0.825 (secondary) x 0.939 (5th gear) x 2.78 (final drive) = 3.83 x 168 = 643
So 477720 divided by 643 should give you 74mph in 5th gear at 4000 rpm using your current diff/wheel setup.
|
|
|
|
|
Logged
|
NO I WON`T. aye ok then, i will
|
|
|
|
tbone
|
|
« Reply #116 on: March 27, 2011, 02:54:20 PM » |
|
update. think i have sorted it. *****CARBS**** i changed the carbs for another set i had. it started ok took it for a run up the carridge way and f****** it shifted. i bottled out a 75/80 .still handled well no shakes at low or high speeds will set up and balance carbs and see what happens so it looks like the carbs for some reason was holding it back on full throttle poss secondary jets thanks to everyone for all your input on this You mean i worked all that out for nothing  |
|
|
|
|
Logged
|
NO I WON`T. aye ok then, i will
|
|
|
|
Cabman77
|
|
« Reply #117 on: March 27, 2011, 02:57:32 PM » |
|
Ok, lets start again. Goldwing 1000 correct? has a primary reduction of 1.708 a secondary reduction of 0.825 giving 1.4091 overall reduction of crank to the input shaft. 1st gear = 2.5 2nd gear = 1.708 3rd gear = 1.333 4th gear = 1.097 5th gear = 0.939 Final drive = 3.40 Lets stick to your 4000 rpm Eng = 4000 divided by overall reduction 1.4091 = 2838 rpm at the input shaft. Output = 2838 divided by final drive ratio 2.78 = 1020 rpm at the wheel. To convert to MPH = engine rpm x raduis divided by final drive ratio x 168 4000 (rpm) x 4.43inches (tyre height) plus 7.5inches (half wheel diam) = 4000 x 11.93 = 47720 1.78 (primary reduction) x 0.825 (secondary) x 0.939 (5th gear) x 2.78 (final drive) = 3.83 x 168 = 643 So 477720 divided by 643 should give you 74mph in 5th gear at 4000 rpm using your current diff/wheel setup. I`ve got a headache !!!!!!!!!!!!!!!!!!!! |
|
|
|
|
Logged
|
..........and Joshua entered Jericho on his Triumph..............
|
|
|
|
zakboy
|
|
« Reply #118 on: March 27, 2011, 03:00:04 PM » |
|
Ok, lets start again.
Goldwing 1000 correct?
has a primary reduction of 1.708
a secondary reduction of 0.825
giving 1.4091 overall reduction of crank to the input shaft.
1st gear = 2.5
2nd gear = 1.708
3rd gear = 1.333
4th gear = 1.097
5th gear = 0.939
Final drive = 3.40
Lets stick to your 4000 rpm
Eng = 4000 divided by overall reduction 1.4091 = 2838 rpm at the input shaft.
Output = 2838 divided by final drive ratio 2.78 = 1020 rpm at the wheel.
To convert to MPH = engine rpm x raduis divided by final drive ratio x 168
4000 (rpm) x 4.43inches (tyre height) plus 7.5inches (half wheel diam) = 4000 x 11.93 = 47720
1.78 (primary reduction) x 0.825 (secondary) x 0.939 (5th gear) x 2.78 (final drive) = 3.83 x 168 = 643
So 477720 divided by 643 should give you 74mph in 5th gear at 4000 rpm using your current diff/wheel setup.
im impressed tbone can you work mine out |
|
|
|
|
Logged
|
Give me the strength to except the things in life i can not change
|
|
|
|
hornet6
|
|
« Reply #119 on: March 27, 2011, 03:19:31 PM » |
|
|
|
|
|
|
Logged
|
no projects ever finished
|
|
|
|
