kingtigg
New member
Help please!
I'm now running with 8DN-20s and a YSY in the primary with a green secondary spring and a Bender 52/43 helix wrapped @ 70 deg.
The 2 rivets in the weights were initialy 4.5 tip and ~1/2-3/4 of that size in the heel (not 100% sure since the rivets came with the weights).
I bought all the clutch components used...is there a chance the springs are no good any more? I'm pretty sure the tip weights were 4.5g since I've got some 4.5g weights new from yamaha and the one that I punched out is the same diameter...Im not sure about the inner ones..im guessing based on what I can see with the rivet hammered in the hole...if they are not the same material (aluminium?) then they could be heavier..im not sure...I just know they are 1/2-3/4 the diameter of the tip ones I removed.
I bought the sled (98 SRX 700) in the summer and have just taken my first ride today after upgrading the stock clutching to the above setup.
I have to say I'm quite disappointed with the results!
The initial upshift was very noticable and once it shifted up the rpms would immediately lug at about 7000...(from 50km/hr+) if I were to let off and hammer back on it again the rpms would not go above 7000! (no backshift)
1st try: tightening the helix to 110 deg...only raised the rpm by ~300 rpm at best.
2nd try: remove the tip weight completely and reduce helix wrap back to 70 deg ....raised the rpm to 8000...not bad...
3rd try: tightening the helix to 120 deg...didnt seem to do all that much.
The best I managed to do was get 8100 rpm shift rpm and a non-spectacular top speed of 130kph (try #2)...i ran out of ditch (~ 1km long)....but there really wasnt much pull left to it after that ...
..shouldnt I easily see 160km/hr?...
I've got a 1" stock polaris track on the machine and a low windshield.
I weigh ~170lbs.
What can I do???? does anyone have any recomendations?
Thanks in advance!
HELP!
-KingTigg
I'm now running with 8DN-20s and a YSY in the primary with a green secondary spring and a Bender 52/43 helix wrapped @ 70 deg.
The 2 rivets in the weights were initialy 4.5 tip and ~1/2-3/4 of that size in the heel (not 100% sure since the rivets came with the weights).
I bought all the clutch components used...is there a chance the springs are no good any more? I'm pretty sure the tip weights were 4.5g since I've got some 4.5g weights new from yamaha and the one that I punched out is the same diameter...Im not sure about the inner ones..im guessing based on what I can see with the rivet hammered in the hole...if they are not the same material (aluminium?) then they could be heavier..im not sure...I just know they are 1/2-3/4 the diameter of the tip ones I removed.
I bought the sled (98 SRX 700) in the summer and have just taken my first ride today after upgrading the stock clutching to the above setup.
I have to say I'm quite disappointed with the results!
The initial upshift was very noticable and once it shifted up the rpms would immediately lug at about 7000...(from 50km/hr+) if I were to let off and hammer back on it again the rpms would not go above 7000! (no backshift)
1st try: tightening the helix to 110 deg...only raised the rpm by ~300 rpm at best.
2nd try: remove the tip weight completely and reduce helix wrap back to 70 deg ....raised the rpm to 8000...not bad...
3rd try: tightening the helix to 120 deg...didnt seem to do all that much.
The best I managed to do was get 8100 rpm shift rpm and a non-spectacular top speed of 130kph (try #2)...i ran out of ditch (~ 1km long)....but there really wasnt much pull left to it after that ...
..shouldnt I easily see 160km/hr?...I've got a 1" stock polaris track on the machine and a low windshield.
I weigh ~170lbs.
What can I do???? does anyone have any recomendations?
Thanks in advance!
HELP!
-KingTigg
The Bender helix,s are very aggressive. I found them to drop rpm,s 2-300 more then a dalton style helix. Change the tip to a .8 & wrap the secondary at 80 degrees. If it still falls on it,s face change the inner to a 2.4 gram rivet.
bluemonster1
LIFE MEMBER ONLY ONCE!!!
I run 8Dn-20's with .85 inner and 2.7 outer.I launch at 8100,but climbs nicely to 8500 and pulls hard.I have dalton 51/43 Helix with green spring wound to 80 right now. Mind you this is a 600,not a 700.Like Turk said,it could be the Helix you have in there.Toss it and get another.