Ramps in the TRA, how they work and how they effect performance.

[Original Tetonice]

Another original comment from the OT, ladies and gentelmen.

Oh, I dunno about where your from, but a 151" track is considered long here. It ain't no 174, but then again, where's a picture of YOUR sled smartass??? Atleast I got enough brains and ambition to completely build a FUNCTIONAL sled from scratch. What have you done, other than supply comic relief on SW?

If you go to the "flea market" enough you can collect enough junk. Your proof of that.

Since its the holidaysi i have 1 straight 163 rail and 1-163 rail extension as well as a 163 track with only 11 missing lugs... Its yours for the taking anytime you want to upgrade.

OT

 

[banditpowdercoat]

If you go to the "flea market" enough you can collect enough junk. Your proof of that.

Since its the holidaysi i have 1 straight 163 rail and 1-163 rail extension as well as a 163 track with only 11 missing lugs... Its yours for the taking anytime you want to grade.

OT

So, now your saying you got JUNK parts? Man, read what you write once in a while...

 

[Transporter]

LMAO, longtrack wanna-bee.

When you start bashin in poor taste what someone rides and has put work into you have crossed the line with me.I hope it makes you feel like a man.

 

[Original Tetonice]

So, now your saying you got JUNK parts? Man, read what you write once in a while...

Dude, the parts are like new take-off parts never been to the flea-market. (except for the track been used)

Transporter, he's proud of his junk. Aren't you proud of your junk ?

Im proud of my junk.

OT

 

[banditpowdercoat]

Dude, the parts are like new take-off parts never been to the flea-market. (except for the track been used)

Transporter, he's proud of his junk. Aren't you proud of your junk ?

Im proud of my junk.

OT

 

[Original Tetonice]

OT-insert picture here[img][/QUOTE]

Heres my 09 XP... my 08XP, 07 Dragon and 06 RMK and 04Rev are in the trailer....I need more room....If you do the search all my other sleds can be found on SW as well. Last season at this time i started a thread about vents and how they help cool the belt during deep snow riding. and i posted pics of my giant XP panel vents that worked great all season long. The XP in the picture just got new vents the other day that look real cool on the blue and white XP as well.

OT

[ATTACH]39696[/ATTACH]

 

[Original Tetonice]

Heres a photo of my 08 and 09 XP with 2 vent styles. Both the R&M and HPS kit work great at keeping the belt cool.

OT

 

[YamaDoo PolCat]

Hey! anyone seen Joey?... I haven't seen him in this thread since about page 4 or 5. I think that's pretty much when everyone kinda gave up on the subject of how the ramps in the TRA effect performance.

The trash talk is still very entertaining! YDPC comes up with the funniest stuff, I asphalt race in the summer and seen the polar clutch on the jr. dragsters comment coming from a mile away. too funny

YDPC you make mention of climbing an area you call the box? is that near Mt. Sir Alexander?

Ya that's the Box. We ended up finding some really nice snow, but I was running the TRA, so blew a belt and parked it. It was one of those things where you just had to try it.

Just got back from Grouse Mountain and took a picture of a really big pulley. The tension is the same on the cable in both pulleys. I suppose you could change the tension for a second by moving one of the pulleys a bit, but they find equilibrium again very fast. Same as the clutches in the sled.

 

[shortstop20]

Just got back from Grouse Mountain and took a picture of a really big pulley. The tension is the same on the cable in both pulleys. I suppose you could change the tension for a second by moving one of the pulleys a bit, but they find equilibrium again very fast. Same as the clutches in the sled.

Good to see you still don't understand what I meant by that post.

The sheaves on a CVT is what puts tension on the belt, so the tension is on the SIDES of the belt.A pulley system like in a dishwasher(at least the ones that I have seen) maintain tension on the belt through the BOTTOM of the belt contacting the top of the pulley. The tension is not applied the same way.

 

[banditpowdercoat]

Good to see you still don't understand what I meant by that post.

The sheaves on a CVT is what puts tension on the belt, so the tension is on the SIDES of the belt.A pulley system like in a dishwasher(at least the ones that I have seen) maintain tension on the belt through the BOTTOM of the belt contacting the top of the pulley. The tension is not applied the same way.

Sorry, but your mistaken. In the Dishwasher Pulleys, The belt does not touch the bottom of the pulley. It may look like it, but it doesn't I work with belts and pulleys of all HP, from fractional HP, to 15,000HP Ball Mill motors.
All V belt pulleys grab the SIDES of the belt on the sides of the sheave.
If your belt in whatever is riding on the base of the pulley, Its too narrow a width belt.

basically, they grip and transmit torque by wedging the belt into the pulley

Now a Flat Belt, like the one that spins the drum in your dryer, thats a different story

 

[Original Tetonice]

What helix do i run with that dish washer?

OT

 

[shortstop20]

Sorry, but your mistaken. In the Dishwasher Pulleys, The belt does not touch the bottom of the pulley. It may look like it, but it doesn't I work with belts and pulleys of all HP, from fractional HP, to 15,000HP Ball Mill motors.
All V belt pulleys grab the SIDES of the belt on the sides of the sheave.
If your belt in whatever is riding on the base of the pulley, Its too narrow a width belt.

basically, they grip and transmit torque by wedging the belt into the pulley

Now a Flat Belt, like the one that spins the drum in your dryer, thats a different story

I realize v-belts are grabbed from the side, I work on cars and semis quite a bit. I thought dishwashers all used flat belts like dryers do. Point conceded on the dishwasher YDPC

What helix do i run with that dish washer?

OT

45 degree straight.

 

[banditpowdercoat]

Shortstop, I put a 47-38 in the wifes Clothes washer last week. Should see that thing backshift for the spin cycle LOL


And ya know, now that I think of it, I think I have seen a couple DISH washers with flat belts too. Been along time. I know I typed Dishwasher in my last post, but I was really meaning Clothes Washer. Seem's Ive been asked to fix them more LOL.

But ya, now that we got the V belt/Flat belt differences cleared up

Wonder if a new DOO reverse angle helix would get better scrubbing action in a dishwasher???

 

[YamaDoo PolCat]

Shortstop, I put a 47-38 in the wifes Clothes washer last week. Should see that thing backshift for the spin cycle LOL


And ya know, now that I think of it, I think I have seen a couple DISH washers with flat belts too. Been along time. I know I typed Dishwasher in my last post, but I was really meaning Clothes Washer. Seem's Ive been asked to fix them more LOL.

But ya, now that we got the V belt/Flat belt differences cleared up

Wonder if a new DOO reverse angle helix would get better scrubbing action in a dishwasher???

The first "reverse" angle helix I remember was on the Arctic Cats. We all wanted that roller set up for the mountains. The reverse angle helix was always a lot steeper than the "usual" helix like the Polaris, but the Cats seemed to upshift and backshift better. This positive action on the reverse angle helix might be what BRP is after in an effort to keep the TRA in service a few more years.

Have to admit I didn't think about the flat belts like they used on the steam engines and old tractors. I'm not that old! The serpentine belts in the newer cars that use a multi goove pulley seems to be a combination of both.

The best example of the mobile sheave pulley is the one on roof top units. As the belt wears the side pressure on the belt becomes less and the belt slips and the unit efficiency goes down. So the outside sheave on the pulley is screwed in until the side pressure (belt tension) is correct again. The drive ratio is changed as a result (faster) but no one seems to worry about it.

On the snowmobile drive system the belt side contact pressure is preset by the secondary. Attempting to change the belt tension by doing things to the primary is pointless. The only way belt tension could be effected is by jamming the secondary to prevent it from operating normally. We don't have the dowelled secondary spring anymore because of the RER, so the secondary would need a bigger spring to increase tension.

There also becomes a point where too much tension turns into extra heat, the secondary bushings start to fail, belts don't last, the primary starts to show excessive wear and the jack shaft and motor mounts are seeing side loads they were not designed for.

Again it is back to, why do you guys want to use such big springs? The high pressures in the spring balanced TRA are the root of the problem. BRP should have junked the TRA, not the BRP roller secondary.

 

[winter brew]

I can't believe this is still going.

 

[rockymking]

LMAO ... the saga continues Winter. It's progressed to household appliance tuning though

 

[Original Tetonice]

My dishwasher is going on the Dyno on Monday.

Happy ThanksGiving Boyz & Girls

OT

 

[banditpowdercoat]

LMAO ... the saga continues Winter. It's progressed to household appliance tuning though

If they can make it go, we'll try to make it faster

 

[Original Tetonice]

Support NBRA.....National Blender Racing Association

ot