Clutching for Rx1???

[tundra]

Frosty, first when we tryed the 89L we tought that the low weigghht killed the top end. But in reality, Secondary must be adjust for the weight of the primary.

i saw 91.8mph on GPS with the 89L setting, and the gearing allow 92 mph. Sure i could have been faster if the motor has been able to pull more. But his particular night, i was the second Fastest , just between a MC 800 141'' at 93 mph.

I think Stiffler in interested in 89L setup. Very aggressive setup and cheap. Sure other think like you said work great. It the magic of the sled, so much torque everywhere, the motor dont care about minor change

 

[..Stiffler..]

thx guys for all the replys and great info....

I think really what im looking for cause im not really in any powder deeper than 3-4 ft.....

Im looking for something like...and mustang 5.0L would be like...

Good torque and quick off the start and in the mid....and has an ok top end. Good for quarter mile...kinda thing...

i want something where when Im on the trails and I see a bit of a bump I can crack on the gas and pretty much wheelie the sled..lol..

as of right now on the lake...with about a ft of snow I hit 161km/h that would be right around the 100mph I think (and that is on the speedo). Im ok with that top end....i just want to have the torque kick in at the beginning. I want my sled to launch and my arms to jerk back...haha...i want to get to 100mph faster thats all...

right now my engagement is at about 3800rpm...I would like it to be around 4300-4400. I think that would give me a better start (I think)

i cant remember what my rpm maxed out at...but for some reason i keep seeing like 10200 or something from when I last rode. Im going out this weekend for sunday so i will make sure I check.


I used to have a 1990 Mustang GT and I loved the way the power was....after that I have a Honda VTR1000 V-twin street bike....I loved the way the power was on that thing. It wasnt the fastest bike but I could hit 280km/h at top speed and I could wheelie from the stand still without using the clutch.

This is the kinda thing I want from the RX-1...after my Wife gets a better sled...one for deeper powder riding...then Ill look to change my setup for trails and mountains....but i just want something for trails and farm fields now....i basically want to make my 0-60 faster...

sry for the long post and I hope I didnt say things over and over again...haha

anyway I think the setup for me will probably be:

OPO
89L
4.5g Rivets
15.0mm Rollers
Helix im not sure of yet what to change
and Secondary Spring not sure what to use...

Frostie if you still have that helix laying around and you think it would work for me...would you sell it ???

anyway all the replies have been awesome....Im so glad i found this site...
and looking forward to seeing some more replies haha...

Stiff

 

[tundra]

this setup will do exactly what you're searching for.

If i can make a suggestion, get the ECP Filter Kit.

I like my sled for launching hard on bump in the trail, the nose come straight up when i smash the throttle.

 

[..Stiffler..]

yeah Im supposed to be getting one....but we will see this weekend....

I hope I get it as well cause I told RX-fern I would buy his then I came across this other one a guy had and was just going to give me for a couple bottles but havent heard anything....hope I can still get it...and if not...ill have to beg rx-fern haha...

anyway....so ok what helix and secondary spring should I get?

or leave alone??

 

[tundra]

if you go with what you said. Silver and 44-40 or something close. or 44-36 or 45-37

 

[..Stiffler..]

ok rgr...can I stay with the stock helix? or will it make that much difference??

and thx again

if all works out ill send you some canadian beer oh never mind your from canada....ill send you some westerner beer


oh and go into the sig request topic if you want ill make you a signature for the forums here...

 

[tundra]

no dont keep the stock one. You will need a lower angle on top
at least at 40 and less

 

[..Stiffler..]

I just took my sled for a ride and i was watching my engagment and my backshift...

and im not sure but a couple questions....

1. When will backshift occur?...basically how long do you have to be at high rpm before it kicks in??

2. My engagment was at about 3800 rpm and then top rpm I was at about 11,200rpm and it stayed there. I was at 11,200rpm for about 15-20 secs and it didnt move down.

So im just wondering is this what stock clutching does? Or maybe my sled has some other clutching parts?

I know I know... I should take my clutch apart and find out...lol...but the reason why im not is because my sled is running good and I dont want to touch it incase I screw it up haha....

anyway any replies would be great....

thx

Stiff

 

[AaronBND]

Lee, I am wrapped at 70 right now. What am I going to feel and notice going to 80? We went out in bottomless powder all day Thursday, so basically the throttle was pinned all day long. At one point, I pulled my clutch cover to see just how hot my belt and clutches were and they were just warm. Not even close to being hot. I am curios about the 80 wrap in the powder though!

Aaron

 

[Frostbite]

Aaron, the change you'll notice at 80 degrees is the immediacy and aggressiveness of the back shift.
As you let off the throttle for a bump when climbing and then almost immediately get back into the throttle to finish your climb your sled will just be in the lower (see proper) gear sooner with 80 degrees.

Honestly, I think it's a matter of taste. Just because I (and my sled) like 80 degrees better than 70 doesn't mean everyone will like it better.
Try it and see if you like it. Like I said earlier, I'm at 90 degrees now and REALLY like the backshift but I will end up back at 80 degrees at some point just see if my new favorite is really 90 degrees.

It might depend on your helix angle too. When I was using the 54/42 helix with the silver spring 80 was the best.
Now I am using the shock wave adjustable helix and maybe because of some difference it prefers 90 degrees?

Take it easy.

Frosty

 

[..Stiffler..]

Thx for taken over my topic aaron....

 

[AaronBND]

Huh? I guess I thought we were talking about clutching?? Did you want to talk about big bulky signature images or something?

Aaron

 

[..Stiffler..]

lol...relax i was kidding with you

and bug bulky signature images.....hmmmm....you got me there

 

[BlgsRX-1mtn]

lol...relax i was kidding with you

and bug bulky signature images.....hmmmm....you got me there

I'm thinking that's supposed to read big...not bug but, I could be wrong.

I just took my sled for a ride and i was watching my engagment and my backshift...

and im not sure but a couple questions....

1. When will backshift occur?...basically how long do you have to be at high rpm before it kicks in??

2. My engagment was at about 3800 rpm and then top rpm I was at about 11,200rpm and it stayed there. I was at 11,200rpm for about 15-20 secs and it didnt move down.

So im just wondering is this what stock clutching does? Or maybe my sled has some other clutching parts?

I know I know... I should take my clutch apart and find out...lol...but the reason why im not is because my sled is running good and I dont want to touch it incase I screw it up haha....

anyway any replies would be great....

thx

Stiff

You shouldn't see backshift unless the engine is under a load or let off the throttle. Backshift is the action of the clutches reversing the direction of the belt in regards to where it is riding in your clutches. In other words as the clutches "upshift" the belt goes higher up the primary sheeves.. thus beeing sucked down lower in the secondary. Backshift is the direct opposite of upshift. The belt goes down the primary sheeves and comes up in the secondary as a direct result of engine loads (deep snow, hill..etc). If your secondary isn't backshifting quick enough, you will notice a lack of RPM recovery.

I think what your refering to is full shift out or overdriving the clutches. This term refers to the fact that your sled continues to gain speed even after the engine has reached max RPMs. This is caused by the second angle on the Helix. The stock straight angle helix for a RX-1 doesn't do this because the goal of most mtn sleds is an efficient backshift rather than a full shift out at high speeds.

Jim

 

[Jonny Rocket]

Just do what Frosty does and you will be good to go. I have not seen a naturally aspirated machine do what his does. Very nice set-up and he knows his poop.

J.