[440x]

How many pucks are you using to get to 8900 RPM? 8? I have 9 in mine with a Gates belt and 8400-8500 RPM is about the best I get at 99.5 MPH on GPS, I tried 8 but lost a belt that day, I think it caused more clutch/belt heat, I've since did a ton a venting and went back to 9 pucks the way I got it from Bill and it's been fine. If I recall I put a used 391 belt on one day and saw an RPM increase to 8600-8700 with the 9 pucks so belt has some influence for sure.

Not all pucks are created equal too. Especially comparing early pb80s with newer. Need to get a cheap scale for accurate comparos, plus you should equal all 3 blocks anyway for smoothest operation.

 

[grover]

ok got it....same deal as me exactly......except im running 168 studs.

To compare setups:

Weight of the pucks, what spring in the primary?

What spring in the secondary?

-grover

 

[fz58317]

I did weight them, my pucks were within a few tenth's of gram of each other, running the Cudney set up, was installed new in 2017, black primary, silver secondary, Cr9 helix, gates carbon cord belt per bills recommendation.

9 pucks weight

99.4 g

99.8

99.3

8 pucks was

93.8

94.1

93.7

 

[440x]

I did weight them, my pucks were within a few tenth's of gram of each other, running the Cudney set up, was installed new in 2017, black primary, silver secondary, Cr9 helix, gates carbon cord belt per bills recommendation.

9 pucks weight

99.4 g

99.8

99.3

8 pucks was

93.8

94.1

93.7

Hopefully you balanced them? IMO this is why you see spring cups broken on these pb80's. 0.5g is a big imbalance.

 

[fz58317]

I wanna say I saw a bigger spread between the total weights when I first opened up the cover, There's no snow now so maybe I'll take the cover off and re weight them and lap them in as needed to get them within a tenth of each other or better hopefully.

 

[SBT]

I borrowed a friends digital scale and got each set of blocks to within 0.1 g of each other. I measured each puck and wrote how much each weighted in marker on each one so later on I can swap them out and know/match up equal weighing pucks. They ranged if I remember correctly from 5.2g to 5.7g.

 

[moparman7367]

To compare setups:

Weight of the pucks, what spring in the primary?

What spring in the secondary?

-grover

SBT, on 30 Aug 2018 - 9:12 PM, said:

I put a 700/1300 in my pb80, Dalton 50/44 helix with a Dalton red spring. Did not have this setup before winter was over (everything was stock) and am looking forward to trying this out this winter. Have had multiple Cudney setups and wanted to try something different.

Nickski said......

What weight are you running? I'm right at 100g each puck and like I said, my RPMs are bang on 87-8800. It doesn't pull and keep pulling like my mod'd 09, but I'm more than happy with this one stock with just clutching.

SledWreck, on 30 Aug 2018 - 08:46 AM, said:

For higher engagement put a CVTECH 1151-1133 spring in it. You'll be in the 3100-3300 rpm range on engagement.

Nickski said.....

That's the 800/1300 spring, I'm running the 700/1300 with a CR9 helix and Ski-doo purple spring and it's bang on perfect. Slightly higher engagement, but very smooth, 8700-8800 RPM all day.

Same set up minus 2.50 grams diff in the pb weight I looked grover I am running that 700-1300

 

[grover]

But I've been told by a good source that you've got a special ground secondary spring that you just can't buy off the shelf so that'll be hard for others to replicate :blush_old:

-grover

 

[SBT]

I believe (did not right it down) I am around 98g and its turning 8600.

98.7 g... found the paper that I did right it down on

 

[moparman7367]

But I've been told by a good source that you've got a special ground secondary spring that you just can't buy off the shelf so that'll be hard for others to replicate :blush_old:

-grover

I do..... special order from great white north distributing. :dance:

 

[Nightrain]

I love the simplicity of the PB 80 and it works great. But I do see belt temps are quite a bit higher with this clutch compared to the e drive. I guess it's probley because of it having a smooth cover and not much wind being swirled around. I put vents in my 2016 X and drilled holes on the back side of the panel...plus cut the plastic cover off the belt guard and drilled some big holes in it. It runs a lot cooler now.

 

[SBT]

I too vented my sled and guard because the pb80 runs hotter. Some say you should not have to and that there is a problem. The problem is they don't vent the new sleds the way they used to. My Formula 111 had vents all over the hood. The new sleds I guess have to meet more noise regulations than before so the manufactures have to close them in more to keep noise down. Who ever heard of having foam on the inside of a belt guard before???? My 850 had it. I say put as many holes in as you think it needs, cuz it does need them.

 

[440x]

Front and back, xs body needs venting more than the xr!

 

[atk]

I put a 700/1300 in my pb80, Dalton 50/44 helix with a Dalton red spring. Did not have this setup before winter was over (everything was stock) and am looking forward to trying this out this winter. Have had multiple Cudney setups and wanted to try something different.

How did this work out for you?

 

[SBT]

I think it works well. Pulls hard and back shifts well. Not as much "engine" braking as a previous Cudney setup so it glides/rolls a bit more which I like. When you let off it still has "engine" braking but just not as much. 98.7 g in the pb80 and is turning 8600 rpm consistently. 5000km on my belt and it still looks brand new and clutch surfaces are nice and clean with next to no belt dust anywhere.

 

[atk]

I think it works well. Pulls hard and back shifts well. Not as much "engine" braking as a previous Cudney setup so it glides/rolls a bit more which I like. When you let off it still has "engine" braking but just not as much. 98.7 g in the pb80 and is turning 8600 rpm consistently. 5000km on my belt and it still looks brand new and clutch surfaces are nice and clean with next to no belt dust anywhere.

This is good news. We got a kit with a PB80 and a Dalton helix. Apparently the previous owner had Cudney consult on this for him and it worked good. I was just really looking for feedback and you sure helped!! Thank you.

 

[SBT]

Just curious.. what helix did you get from Dalton?

 

[atk]

Just curious.. what helix did you get from Dalton?

I believe it's the 50/44

 

[my87csx481]

Sorry for the ancient thread revival. I will likely need to replace an e drive 2 (assuming pb80's are still available).

Anyone running a pb80 with a torsion spring in the secondary (in a 1200 Renegade/Enduro)? Care to share your experience/results/and specifics (what cam and secondary spring, gearing, track, etc.)?

Or is the Cudney kit (cam and springs + pb80) the way to go?

 

[Doodah1200]

They’re still available. Both my enduros are running the cudney kits, black primary, silver secondary with CR9 helix, with gates belts. Smooth as can be, but I’m sure you’ll get more feedback on other setups. I didnt test with only swapping the primary and keeping the stock secondary torsion and helix, did both primary and secondary at the same time.