HPD now offers their own roller clutch that they spent about 3 years developing. It retails for !98.50 according to my dealer. He says that the Aaen roller clutch will not hold up very well, but the HPD unit should be better. Has anyone had problems with Aaen? Are you satisfied with the performance gain?

 

The UPS man just droped off my HPD Roller last night. I will be installing it soon. It is very well done. I have not seen an AAEN so I can not really compare the two. I will let you know how it works.

KD

 

SWEET!!! Do tell how it works. I think I'd like to install a roller clutch, from what I've heard. Wasn't the aaen clutch wicked expensive?

 

Don't know much about the HPD clutch,But I have run an AAEN roller clutch for 2 years in a 96 sport making about 63hp without any problems.

 

800 can you send me some pics of the 800 i want to put a 440 aor 600 ev in my wifes scram 400 4x4.How did you make the exhust pipes ?

 

Dazed,
I don't think an 800 will fit with the chain or drive shaft to the front, not to mention the problem of the transmission living with that much power.Your better off with a 60hp version of the 400. I have drag pipes on my 800 one on each side. I'll see about some pictures.

 

Dumb question, but could someone tell me what a roller clutch is and what advantage it has over a stock clutch? Thanks.

 

Basically the internals of the secondary clutch are replaced to allow for a more efficient transfer of power.

A OEM clutch has plastic buttons that the aluminum helix slides back and forth on. This works well for low power machines, but as more power is made the system robs you of it.

With the AAEN roller the helix mounts in the secondary almost backwards. Its made of metal and slides on small ball bearrings, allowing for a more efficient transfer of power and a modest improvement of throttle response. Cost is around $200.

HPD's roller in an encapsulated version, and works under the same principal. I believe it is priced close to the AAEN roller.

Both rollers also offer more "settings" over factory. This means that you can adjust the spring pre-tension in the secondary to acheive different results depending on riding style, IE more low end or quicker shift out. Basically there are 4 settings on a OEM helix and around 15 with a roller.

To answer the original question, I've had an AAEN roller in my 400 for nearly two years now, no problems. I added it at the same time I made several other mods (porting, head, carb, ect...) so it shard for me to say exactly what I gained from it, but I wouldn't give it up!

 

I have been running the HPD roller clutch for about a month or so now. Installation was no big deal, you have to do a little grinding and drilling to mount the encapsulated roller on the secondary, back shift is definiately better, it took a couple of different try's to get the top rpms where I wanted them but now it is right.

ronnnnn@lycos.com

 

I had mine installed this summer. All I can say is WAM! Power seems to come on much faster with no lag in throttle. I could most definately feel the difference.

Put it this way: I liked the pipe machine well and all but it lacked something after a couple months of riding. Added the roller and it fealt totally different! I am the type who gets used to the power too fast therefore adding things every month...but the roller is a must have!

Comparing my "lightly" modded Scrambler to a stock machine is like comparing a Ford Escort to a Porshe...(only my opinion)I could never again go back to a "stock" anything!

Brian