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Old 04-24-2013, 04:49 PM   #1
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Raceseng | Billet Aluminum Engine Pulleys

In the process of developing and testing our very own engine pulleys.

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Old 04-25-2013, 07:24 AM   #2
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I like the design nice machining.

Are you testing them with a higher rev limit?
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Old 04-25-2013, 08:19 AM   #3
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Looking good what's the weight?
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Old 04-25-2013, 02:29 PM   #4
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Just an FYI

I had a pulley with a spoked design on my car for a few months. After a while I realized it was collecting dirt in the apex of the spokes, which seemed to unbalance the engine. I could feel it running rougher and was getting a burnt oil smell after high rpm use. I went back to stock and everything is back to normal. The installation was done correctly, there was no wobble, the key and o-ring were seated properly.

I don't know if my experience was a singular event, I haven't heard of anyone else having this issue.
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Old 04-25-2013, 08:28 PM   #5
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Originally Posted by markitect View Post
I like the design nice machining.

Are you testing them with a higher rev limit?
Yes, I will be testing them to 8,100



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Old 04-29-2013, 05:18 PM   #6
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I like the design nice machining.

Are you testing them with a higher rev limit?
Thanks Markitect! We have a couple sets prototyped and our cars for testing. Simmons is using them on his AutoX car.
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Old 04-29-2013, 05:21 PM   #7
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Just an FYI

I had a pulley with a spoked design on my car for a few months. After a while I realized it was collecting dirt in the apex of the spokes, which seemed to unbalance the engine. I could feel it running rougher and was getting a burnt oil smell after high rpm use. I went back to stock and everything is back to normal. The installation was done correctly, there was no wobble, the key and o-ring were seated properly.

I don't know if my experience was a singular event, I haven't heard of anyone else having this issue.
Calum - That is really odd because you would think that the dirt would collect equally in between the spokes. I have never heard of this happening. The only thing I can think of is that the pulley might have been out of balance from the get go.
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Old 04-29-2013, 05:25 PM   #8
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Quote:
Originally Posted by Calum View Post
Just an FYI

I had a pulley with a spoked design on my car for a few months. After a while I realized it was collecting dirt in the apex of the spokes, which seemed to unbalance the engine. I could feel it running rougher and was getting a burnt oil smell after high rpm use. I went back to stock and everything is back to normal. The installation was done correctly, there was no wobble, the key and o-ring were seated properly.

I don't know if my experience was a singular event, I haven't heard of anyone else having this issue.
Kartboy's is $95 USD and closed face.
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Old 04-29-2013, 06:27 PM   #9
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Calum - That is really odd because you would think that the dirt would collect equally in between the spokes. I have never heard of this happening. The only thing I can think of is that the pulley might have been out of balance from the get go.
I checked and re-checked but it was running true. It seemed odd to me to which is why I didn't think about the pulley right off. I'm still not 100% convinced because of how odd it is, but the dirt was there and the problem is gone.

I haven't heard of anyone else, on any model of car, having this issue so I'm 99.99% sure yours will be fine aswell. I only mentioned it because you seem to still be in an R&D phase and this might be something you'd like to test before going to market. I certainly wont be criticizing if you find it's not a worry.
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Old 04-29-2013, 09:54 PM   #10
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While i do love having our parts plugged, I do not condone posting on other companies Threads unless we are asked a direct question.

As a CNC machinist i have to say that pulley looks pretty kickass. I've always wondered if a design like that would whistle. Only one way to find out.
Keep up the good work.

Tom
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Old 04-29-2013, 11:12 PM   #11
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Any idea on the weight of these pulleys?
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Old 04-30-2013, 02:36 AM   #12
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Looks sick, in for weight as well
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Old 04-30-2013, 06:02 AM   #13
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Any idea on the weight of these pulleys?







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Old 04-30-2013, 07:40 AM   #14
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Those are awesome!
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Old 04-30-2013, 03:37 PM   #15
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Wow, very cool. Will this be the only finish or will other colors be available?
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Old 05-01-2013, 07:42 AM   #16
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Wow, very cool. Will this be the only finish or will other colors be available?
There is no finish on the prototypes in the pictures but we plan on offering them black and clear anodized. Offering different colors is difficult because of the amount of SKU's that generates.
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Old 05-01-2013, 12:54 PM   #17
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What pulley is the one pictured with a bearing ??
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Old 05-01-2013, 02:23 PM   #18
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nice, very lightweight!
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Old 05-01-2013, 02:26 PM   #19
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I actually like them as they appear. Any issues with cel so far?
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Old 05-06-2013, 03:11 PM   #20
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Are these on a car yet, I can't wait to hear more.
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Old 05-06-2013, 03:38 PM   #21
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Wow... lost of weight reduction there. Glad i've been waiting for parts like these!
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Old 05-06-2013, 04:09 PM   #22
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Quote:
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There is no finish on the prototypes in the pictures but we plan on offering them black and clear anodized. Offering different colors is difficult because of the amount of SKU's that generates.
So you are planning to do the non ribbed Idlers as well? Very cool! Will the idlers be available separately?
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