How much can a 30 series really take?

[Whitetrashrocker]

Seems like the consensus says 8 or 9 hp.

Is there any proof as to what happens when you go past that?

Does the driver explode?

We need someone to strap a 30 on a v-twin.

 

[anickode]

I think the 30 series itself is rated for a bit higher than the TAV2 kit because of the integral mounting plate used with the TAV2, but I could be mistaken.

 

[Hellion]

I wanna see the torture tests. Can we rig up something to 'over-drive' a TAV30 to its theoretical limits...and beyond?

Remember, we also have to spin a cast iron flywheel to 50,000 revs (or thereabouts) and note when it explodes.

 

[Whitetrashrocker]

I'll take donations of parts. I'll run a vid for your entertainment.

 

[itsid]

I'm no longer convinced it's the backplate tbh..
Comet lists both (the tav2 kit and the series 30) as 8hp in official documents

I think the main culprit is the belt.
In the end, for the belt to work it needs to slip,
the more it slips the warmer it gets, the warmer it gets the more it'll slip.
if it slips it wears and if it slips badly it wears badly..
the more torque you have the more it slips...

you see where this is leading, no?

neither the driver nor the driven would care much about torque at first..
they hold up to a certain rpm.. and they're design to be under load at that rpm...
I doubt you can reach their threshhold and get the driver to desintegrate.
but it'd be funny to see the driver w/o load spinning at 16k rpms on a 15hp two stroke just for the record

Anyways.. it's still the belt being the weakest link.
Since supermannotorious has the Tav2 on at least a few 420 predators.
we can safely assume for non karting situations it's still good enough for 13hp

And while some people are okay with a belt lasting only a few months while other want it to last for 2 or more years...
how should we put a limit on that?

torque hours per belt (for certain manufactier and length)??

*shrugs*

'sid

 

[Whitetrashrocker]

So then in theroy a taller belt would be the answer. Make more surface area on the sheaves.

Excluding the belt, which part would give first?

 

[landuse]

The belt will go. That's why its rated for 8-9HP

 

[itsid]

So then in theroy a taller belt would be the answer. Make more surface area on the sheaves.

Excluding the belt, which part would give first?

A taller and wider belt would be the answer yes.

in case of a storm, which roof tile is going to give first?

Oh wait blatant answer:
without the belt the driven is not going to move.. sooo the driver ?!

'sid

 

[MTNSleder]

I think the clutch driver starts to warp with to much torque.... Mine is anyway

 

[Whitetrashrocker]

Pics sledder?

 

[MTNSleder]

Pics sledder?

no, i sealed everything up for the snow. Don't feel like taking it apart yet..

---------- Post added at 09:08 AM ---------- Previous post was at 09:04 AM ----------

it's not as bad as this guys driver... Wait no mines worse...

---------- Post added at 09:09 AM ---------- Previous post was at 09:08 AM ----------

http://www.diygokarts.com/vb/showthread.php?t=37486

 

[Whitetrashrocker]

Ahh. Spindles.
You should take notes.

 

[MTNSleder]

Ahh. Spindles.
You should take notes.

Were is that spindles anyway? Wait....... I'm Spindles!!

 

[bob58o]

As much as I can throw at one. LOL.
I dunno how much HP the engines I put together make. According to the internet, they should be more than 15HP if running properly. I have had a chunk of belt hit me in the leg. I thought I got shot with a BB gun, but no catastrophic failures otherwise. To be fair, since I sold it, the kid said he broke the driven unit. But actually a bike shop told him it needed replacing, so who knows if it was really toast. Doubt it.

 

[KartFab]

so here are a few examples of what happens when you run a 30 series on an engine at or above 8 hp that i have personally witnessed:

mini bike honda gx200 on methanol, went through three belts on practice laps, couldnt race.

modified predator 420: went through one belt during the go power sports spring swap meet

stage 1 upgraded predator 301: did okay, but didnt shred the belts like the 420, still went through belts fast

honda gx200, stage 4 mods: broke the steel drive hub where the fixed sheave attaches to the drive unit.

Other accoutns that are out there are usually "goes through belts like crazy" and "my drive unit stopped working" the hub that the moveable sheave rides on needs special lubrication so it doesnt shear off the metal from the friction of the moveable sheave. The moveable sheave tends to gouge out the splines on the hub. Also, the weight pack can wear pretty bad. I have seen flakes from the weight pack when you open it up to figure out what is going on.

I have seen plenty of go karts and mini bikes running modified engines with the 30 series with 'no issues' but that was just short drags, and whatnot. 15-20 hp

the 40 series torque converter isnt that much more expensive, and you have zero issues up to 18+ hp.

 

[Joe-405]

I’m still running strong at about 14 hp and still the original belt on the barstool if that helps. It’s been on for 3+ years roughly. No issues whatsoever still to this day.

---------- Post added at 11:55 AM ---------- Previous post was at 11:55 AM ----------

And it’s a knockoff at that !

 

[Whitetrashrocker]

I’m still running strong at about 14 hp and still the original belt on the barstool if that helps. It’s been on for 3+ years roughly. No issues whatsoever still to this day.

---------- Post added at 11:55 AM ---------- Previous post was at 11:55 AM ----------

And it’s a knockoff at that !

It's a barstool. Are you really going all out? Seems like it would more of a throttle blipper.

---------- Post added at 11:33 AM ---------- Previous post was at 11:32 AM ----------

so here are a few examples of what happens when you run a 30 series on an engine at or above 8 hp that i have personally witnessed:

mini bike honda gx200 on methanol, went through three belts on practice laps, couldnt race.

modified predator 420: went through one belt during the go power sports spring swap meet

stage 1 upgraded predator 301: did okay, but didnt shred the belts like the 420, still went through belts fast

honda gx200, stage 4 mods: broke the steel drive hub where the fixed sheave attaches to the drive unit.

Other accoutns that are out there are usually "goes through belts like crazy" and "my drive unit stopped working" the hub that the moveable sheave rides on needs special lubrication so it doesnt shear off the metal from the friction of the moveable sheave. The moveable sheave tends to gouge out the splines on the hub. Also, the weight pack can wear pretty bad. I have seen flakes from the weight pack when you open it up to figure out what is going on.

I have seen plenty of go karts and mini bikes running modified engines with the 30 series with 'no issues' but that was just short drags, and whatnot. 15-20 hp

the 40 series torque converter isnt that much more expensive, and you have zero issues up to 18+ hp.

This is what I was wanting. More carnage please.