Let's Talk Belts & Clutches...
#31
08-20-2003 | 01:11 PM
Range Rover
Joined: Jul 2001
Posts: 194
Likes: 0
Let's Talk Belts & Clutches...
Originally posted by: SHOTGUN
Newbeatle,
I went down the snowmoble route a year ago. Not room between clutches for much bigger and back to belt issue.
I had a idea for the v700 for a while now. Here it is. This would also work for p650, but you couldn't use 4 wheel drive much, it wouldn't be reared the same.
take the swing arm off and throw it away.
make extended swingarm with straight axle and sprocket.
replace primary clutch with snowmobile primary,
install a shaft with a snowmobile driven clutch on it, this shaft would also have the other sprocket which would chain drive the rear axle. It could be mounted where the swing arm hooks now. You would by pass the transmission altogether. No reverse.
This would make it just like a snowmoble on wheels. with the torque it has, just think of the speed. I would guess well over 100 MPH, with pickup all the way to the top.
My guess is there would be no ATV, 2 stroke or 4 stroke that would touch it. Best of all we could us a snowmobile belt. It would also lighten the bike by a lot.
Remember, when someone does this in the future. It was my idea!
[img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-wink.gif[/img]
Newbeatle,
I went down the snowmoble route a year ago. Not room between clutches for much bigger and back to belt issue.
I had a idea for the v700 for a while now. Here it is. This would also work for p650, but you couldn't use 4 wheel drive much, it wouldn't be reared the same.
take the swing arm off and throw it away.
make extended swingarm with straight axle and sprocket.
replace primary clutch with snowmobile primary,
install a shaft with a snowmobile driven clutch on it, this shaft would also have the other sprocket which would chain drive the rear axle. It could be mounted where the swing arm hooks now. You would by pass the transmission altogether. No reverse.
This would make it just like a snowmoble on wheels. with the torque it has, just think of the speed. I would guess well over 100 MPH, with pickup all the way to the top.
My guess is there would be no ATV, 2 stroke or 4 stroke that would touch it. Best of all we could us a snowmobile belt. It would also lighten the bike by a lot.
Remember, when someone does this in the future. It was my idea!
[img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-wink.gif[/img]
Sounds like an episode of Monster Garage!!!
[img]i/expressions/face-icon-small-happy.gif[/img] [img]i/expressions/face-icon-small-happy.gif[/img] [img]i/expressions/face-icon-small-happy.gif[/img]
#34
08-20-2003 | 02:23 PM
Pro Rider
Joined: Aug 2002
Posts: 355
Likes: 0
Let's Talk Belts & Clutches...
Well, if we can't figure out a way to get the belt up higher on the primary, then we might as well remove that excess weight too then.
Mike,
Don't you have an extra primary that we can have your man cut the top edge off of? Our biggest effects with weight removal should be on the periphery, as we discussed. I know you had that other drilling idea too.
Did you see that offer by Don in MikeyB's thread at Kawiriders?
Mike,
Don't you have an extra primary that we can have your man cut the top edge off of? Our biggest effects with weight removal should be on the periphery, as we discussed. I know you had that other drilling idea too.
Did you see that offer by Don in MikeyB's thread at Kawiriders?
#35
08-20-2003 | 02:49 PM
Thread Starter
|
Pro Rider
Joined: May 2003
Posts: 1,930
Likes: 0
Let's Talk Belts & Clutches...
DWB... if weight removal were more of a concern than gear ratio advantage, then it would be no big deal to trim the excess pully off the stock primary, however doing this limits us to running the engine at higher rpm to achive greater speed...but I'm not ready to give up on getting the belt to the top yet... my old secondary needs to have the "oillite" bushing machined for it, or at least repaired to be of any good again... "Stu" & I looked at the primary & talked some trash about the secondary, last night...
some of the possible improvements require lots of time consuming machine work... as I don't want to wear out my welcome in his shop, & I'd like the fix to be as easy as possible, so as many people can utilize it... I'm going to look at the easiest options 1st...
if there are no easy options, such as the magic belt, or ???
my 1st instinct is that a used, common, readily available sled clutch set could be trimmed down easily, & since the shaft is likely larger on the sled, an adaptor fabricated, to make them fit the Prairies shafts... I think, for instance on Polaris sled clutches, that there is a way to interchange different helixes, a wide variety of springs, & an inexpensive supply of belts...
anyone got any measurements or had much expirience with racing sleds & tuning thier clutches, to give me an idea where to start ???
some of the possible improvements require lots of time consuming machine work... as I don't want to wear out my welcome in his shop, & I'd like the fix to be as easy as possible, so as many people can utilize it... I'm going to look at the easiest options 1st...
if there are no easy options, such as the magic belt, or ???
my 1st instinct is that a used, common, readily available sled clutch set could be trimmed down easily, & since the shaft is likely larger on the sled, an adaptor fabricated, to make them fit the Prairies shafts... I think, for instance on Polaris sled clutches, that there is a way to interchange different helixes, a wide variety of springs, & an inexpensive supply of belts...
anyone got any measurements or had much expirience with racing sleds & tuning thier clutches, to give me an idea where to start ???
#36
08-20-2003 | 03:01 PM
Pro Rider
Joined: Sep 2002
Posts: 1,788
Likes: 0
Let's Talk Belts & Clutches...
No measurements, but some suggestions.
Go with polaris like you said, Polaris uses a comet 3 pole clutch, like our 4 pole clutch.
The polaris secondary has an endless supply of multi angled helix's that can be easly had and changed. Weights, springs and belts are everywhere.
The comet clutch is the most tunable clutch out there in my mind.
I've raced Polaris's and Bom's all my life. Maybe I'll to back to the drawing board on the snowmobile clutch. I'll let you know.
Go with polaris like you said, Polaris uses a comet 3 pole clutch, like our 4 pole clutch.
The polaris secondary has an endless supply of multi angled helix's that can be easly had and changed. Weights, springs and belts are everywhere.
The comet clutch is the most tunable clutch out there in my mind.
I've raced Polaris's and Bom's all my life. Maybe I'll to back to the drawing board on the snowmobile clutch. I'll let you know.
#37
08-20-2003 | 03:22 PM
Thread Starter
|
Pro Rider
Joined: May 2003
Posts: 1,930
Likes: 0
Let's Talk Belts & Clutches...
unless THEROCK, or someone else, comes up with some suggestions for a belt soon... then I'll be taking a trip to the local used sled & salvage yard... the guy there used to race sleds & still sponsers others that still do... I'll have to go pick his brain, for suggestions to which components to start with
#38
08-20-2003 | 03:50 PM
Pro Rider
Joined: Sep 2002
Posts: 1,788
Likes: 0
Let's Talk Belts & Clutches...
I just had another brain storm.
I'm going to put a snowmobile primary on in place of the stock primary.
I'm going to mount an idle shaft on bearings, in the area of where the swing arms hooks. this shaft will have the driven snowmoble clutch on it.
I'll chain drive back to the shaft, where the stock driven used to be, with a short chain.
This will spread the clutches out, so there is room for the sled clutch, and still go through the transmission, now we can use 4 wheel drive and the gear ratios will be the same.
Wouldn't be that hard.
one counter shaft, two bearings, two clutches, two sprockets the same size and a short chain.
I'm going to put a snowmobile primary on in place of the stock primary.
I'm going to mount an idle shaft on bearings, in the area of where the swing arms hooks. this shaft will have the driven snowmoble clutch on it.
I'll chain drive back to the shaft, where the stock driven used to be, with a short chain.
This will spread the clutches out, so there is room for the sled clutch, and still go through the transmission, now we can use 4 wheel drive and the gear ratios will be the same.
Wouldn't be that hard.
one counter shaft, two bearings, two clutches, two sprockets the same size and a short chain.