Super Rat weights testing

[stingray719]

I was curious when I saw these, and determined to see if they are for real or snake oil. I mean the concept is sound on paper but things sound on paper don't always react like expected in real life testing. The concept of the weight moving inside and tracking with the roller producing lightning fast backshifts intrigued me.

So lets get right to it on the testing. I went in with some doubts as the weight had more of a curve in the profile than I like. Results from only one day of testing, and I reserve the right to amend my testing results if other testing does not yield the same results.

1. Lightning fast backshift, VERY noticeable.
2. Tested against our other Viper before and after the RAT weights gained about half a sled length but this kind of testing is not terribly accurate
3. Seat of pants - let off throttle and hit it again fast and it has a motorcycle immediate response type feel, no slight wind up like any other sled I have rode

Very, very, happy with these weights, so unless additional testing reveals something I have not seen the RAT weights stay in our Red Viper. Blue Viper will keep 8FP for testing purposes.

Super Rat weights are a Bender Racing product.

If you have ever ran the RAT weights please add your experience with them.

 

[nherbst454]

Intriguing but damn...270!

 

[stingray719]

Intriguing but damn...270!

Yep, better let me test a few more weekends before you consider buying them...unless you like to test like me!

 

[cannondale27]

Wow that is a cool idea!

 

[STAIN]

I had one of the first sets a few years ago in my Nitro XTX. I found them to provide inconsistent rpm's and I don't think pulled as hard as my Draggin flies did. I fooled with them a while to try to get them to work better but in the end I got rid of them.

 

[Grimm]

When I used the Rat weights, I could never dial in an acceptable engagement rpm (too high), mid rpms were too high and couldn't reach peak rpms, essentially losing close to 10mph to speed. Fuel mileage dropped accordingly. Ive tried a couple of springs, but was unsuccessful finding an acceptable one.

When I removed them, the weights dug into the clutch pins and wore grooves in them, which eventually could lead to a failure if left in for a longer time. I feel the weights should have a bushing installed to prevent this abnormal wear.

I wish you better luck than i did dialing them in.

 

[stingray719]

When I used the Rat weights, I could never dial in an acceptable engagement rpm (too high), mid rpms were too high and couldn't reach peak rpms, essentially losing close to 10mph to speed. Fuel mileage dropped accordingly. Ive tried a couple of springs, but was unsuccessful finding an acceptable one.

When I removed them, the weights dug into the clutch pins and wore grooves in them, which eventually could lead to a failure if left in for a longer time. I feel the weights should have a bushing installed to prevent this abnormal wear.

I wish you better luck than i did dialing them in.

Grimm were yours just like the ones in the picture above? The reason I asked is that was the first version and the updated version has weight holes also in the heel and metal pin bushings instead of the plastic ones pictured. I appreciate your response and am not doubting you it in fact I hope that is why they updated the weights.

Ours is engaging at 3600 to 3700 and has slightly higher revs at take off but by no more than a couple hundred RPMs. I might add I did grind a little off the bottom of the ramp where the bump was on initial take off but don't think I changed it a lot on take off rpm. Runs VERY strong and pulls hard to 60 - 70 mph, have not tested higher as we run mountain roads and off trail. Which brings up a good point in that what will they do on top speed. Ours is running a GWG with a 7mm shim so that too would probably be different than your testing.

Once again I appreciate your response and am not doubting you just hoping the problems you saw have been addressed.

 

[stingray719]

I had one of the first sets a few years ago in my Nitro XTX. I found them to provide inconsistent rpm's and I don't think pulled as hard as my Draggin flies did. I fooled with them a while to try to get them to work better but in the end I got rid of them.

Have not found that...yet, but I might. More testing to follow.

I tried Heelclicker and went back to 8FP, but if Rat weights do not work out I think I will try draggin flies next.

 

[uofm]

I have too look but I think I have some drgn flys out here that I would sell. Can't remember if I sold them or not. Is it the memory that goes 1st?

 

[Grimm]

I must have had the first version then, as there were no place to add weight to the help. I sold the weights to someone on TY a couple of years ago, just a heads up to whomever bought them off me.

Good to hear they updated them.

 

[tapex_07]

Sting, question for ya. Since it seems that you are adding alot of shims (4,5,6,7mm) have you looked into running the older short primary cover? I haven't measured out the diff between the two but I would imagine that might be an alternate route? Just spit balling here, as I was out in the garage and looking at the two primarys...

 

[cannondale27]

Grimm were yours just like the ones in the picture above? The reason I asked is that was the first version and the updated version has weight holes also in the heel and metal pin bushings instead of the plastic ones pictured. I appreciate your response and am not doubting you it in fact I hope that is why they updated the weights.

Ours is engaging at 3600 to 3700 and has slightly higher revs at take off but by no more than a couple hundred RPMs. I might add I did grind a little off the bottom of the ramp where the bump was on initial take off but don't think I changed it a lot on take off rpm. Runs VERY strong and pulls hard to 60 - 70 mph, have not tested higher as we run mountain roads and off trail. Which brings up a good point in that what will they do on top speed. Ours is running a GWG with a 7mm shim so that too would probably be different than your testing.

Once again I appreciate your response and am not doubting you just hoping the problems you saw have been addressed.

3600-3700 is awful high engagement.

 

[stingray719]

3600-3700 is awful high engagement.

Perfect for me where I ride, and I think it came with somewhere near that engagement?

 

[14srviper]

Stock engagement on mine is 3800

 

[stingray719]

Another weekend on the Rat weights and I really like them. Few points though.

1. It has been said that the Rat weights are not consistent. I have not seen this yet but maybe not as these are an updated version. That and we boondock so if rpm is off 200 I might not notice it.
2. It has been said that the roller pin wears out. Not enough miles to verify this but as this version comes with a metal bushing and the previous did not this may be a non issue
3. It has been said these come too heavy stock. That may be, but as I have to cut most of my weights down for above 10k altitude I cannot verify this
4. It has been said that these weights engage too high. If you use the black Heelclicker primary spring then yes these would engage very high. I used the GWG with 7mm shim engages at 3600-3700
5. It has been said these pull harder than other weights and this I agree wholeheartedly....in my testing side by side with other Viper these were good for a half sled length to 60mph over the 8FP setup.
6. It was advertised as having faster backshifts. WOW this is amazing as it is instant backshift and reaccelerate like a 4 stroke motorcycle, VERY fun.


One more weekend of testing and then if no issues I am getting another set of these for my Blue Viper to replace the 8FP.